added comments on restrictions for seller without Premium subscription

Context is needed to limit time of execution of a method. Previously, context was passed to structure and it was stored inside structure which is a bad practice. Now we need to pass context to function, which is a best practice

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Kirill
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -11,6 +11,7 @@ Read full [documentation](https://docs.ozon.ru/api/seller/en/#tag/Introduction)
 You can check [list of supported endpoints](ENDPOINTS.md)
 
 ## How to start
+### API
 Get Client-Id and Api-Key in your seller profile [here](https://seller.ozon.ru/app/settings/api-keys?locale=en)
 
 Just add dependency to your project and you're ready to go.
@@ -35,6 +36,7 @@ func main() {
 	client := ozon.NewClient("my-client-id", "my-api-key")
 
 	// Send request with parameters
+	ctx, _ := context.WithTimeout(context.Background(), testTimeout)
 resp, err := client.Products().GetProductDetails(&ozon.GetProductDetailsParams{
 		ProductId: 123456789,
 	})
@@ -49,6 +51,43 @@ func main() {
 }
 ```
 
+### Notifications
+Ozon can send push-notifications to your REST server. There is an implementation of REST server that handles notifications in this library.
+
+[Official documentation](https://docs.ozon.ru/api/seller/en/#tag/push_intro)
+
+How to use:
+```Golang
+package main
+
+import (
+	"log"
+
+	"github.com/diphantxm/ozon-api-client/ozon/notifications"
+)
+
+func main() {
+	// Create server
+	port := 5000
+	server := notifications.NewNotificationServer(port)
+
+	// Register handlers passing message type and handler itself
+	server.Register(notifications.ChatClosedType, func(req interface{}) error {
+		notification := req.(*notifications.ChatClosed)
+
+		// Do something with the notification here...
+		log.Printf("chat %s has been closed\n", notification.ChatId)
+
+		return nil
+	})
+
+	// Run server
+	if err := server.Run(); err != nil {
+		log.Printf("error while running notification server: %s", err)
+	}
+}
+```
+
 ## Contribution
 If you need some endpoints ASAP, create an issue and list all the endpoints. I will add them to library soon.
 

client.go

@@ -15,36 +15,33 @@ type HttpClient interface {
 
 type Client struct {
 	baseUrl string
-	ctx     context.Context
 	Options map[string]string
 
 	client HttpClient
 }
 
-func NewClient(baseUrl string, opts map[string]string) *Client {
+func NewClient(client HttpClient, baseUrl string, opts map[string]string) *Client {
 	return &Client{
 		Options: opts,
-		ctx:     context.Background(),
+		client:  client,
-		client:  http.DefaultClient,
 		baseUrl: baseUrl,
 	}
 }
 
 func NewMockClient(handler http.HandlerFunc) *Client {
 	return &Client{
-		ctx:    context.Background(),
 		client: NewMockHttpClient(handler),
 	}
 }
 
-func (c Client) newRequest(method string, url string, body interface{}) (*http.Request, error) {
+func (c Client) newRequest(ctx context.Context, method string, url string, body interface{}) (*http.Request, error) {
 	bodyJson, err := json.Marshal(body)
 	if err != nil {
 		return nil, err
 	}
 
 	url = c.baseUrl + url
-	req, err := http.NewRequestWithContext(c.ctx, method, url, bytes.NewBuffer(bodyJson))
+	req, err := http.NewRequestWithContext(ctx, method, url, bytes.NewBuffer(bodyJson))
 	if err != nil {
 		return nil, err
 	}
@@ -56,8 +53,8 @@ func (c Client) newRequest(method string, url string, body interface{}) (*http.R
 	return req, nil
 }
 
-func (c Client) Request(method string, path string, req, resp interface{}, options map[string]string) (*Response, error) {
+func (c Client) Request(ctx context.Context, method string, path string, req, resp interface{}, options map[string]string) (*Response, error) {
-	httpReq, err := c.newRequest(method, path, req)
+	httpReq, err := c.newRequest(ctx, method, path, req)
 	if err != nil {
 		return nil, err
 	}

client_test.go

@@ -1,8 +1,14 @@
 package core
 
 import (
+	"context"
 	"net/http"
 	"testing"
+	"time"
+)
+
+const (
+	testTimeout = 5 * time.Second
 )
 
 type TestRequestRequest struct {
@@ -55,7 +61,8 @@ func TestRequest(t *testing.T) {
 		c := NewMockClient(NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
 		respStruct := &TestRequestResponse{}
-		resp, err := c.Request(http.MethodPost, "/", test.params, respStruct, nil)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Request(ctx, http.MethodPost, "/", test.params, respStruct, nil)
 
 		if err != nil {
 			t.Error(err)

ozon/analytics.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -19,10 +20,66 @@ type GetAnalyticsDataParams struct {
 	DateTo time.Time `json:"date_to"`
 
 	// Items Enum: "unknownDimension" "sku" "spu" "day" "week" "month" "year" "category1" "category2" "category3" "category4" "brand" "modelID"
+	// Data grouping available to all sellers:
+	//   - unknownDimension—unknown,
+	//   - sku—product identifier,
+	//   - spu—product identifier,
+	//   - day—day,
+	//   - week—week,
+	//   - month—month.
+	// Data grouping available to sellers with Premium subscription:
+	//   - year—year,
+	//   - category1—first level category,
+	//   - category2—second level category,
+	//   - category3—third level category,
+	//   - category4—fourth level category,
+	//   - brand—brand,
+	//   - modelID—model.
 	Dimension []GetAnalyticsDataDimension `json:"dimension"`
 
 	// Filters
-	Filters []struct {
+	Filters []GetAnalyticsDataFilter `json:"filters"`
+
+	// Number of items in the respones:
+	//   - maximum is 1000,
+	//   - minimum is 1.
+	Limit int64 `json:"limit"`
+
+	// Specify up to 14 metrics. If there are more, you will get an error with the InvalidArgument code
+	// The list of metrics for which the report will be generated.
+	//
+	// Metrics available to all sellers:
+	//
+	// 	 - revenue—ordered amount,
+	//   - ordered_units—ordered products.
+	// Metrics available to sellers with Premium subscription:
+	//   - unknown_metric—unknown metric,
+	//   - hits_view_search—impressions in search and category,
+	//   - hits_view_pdp—impressions on the product description page,
+	//   - hits_view—total impressions,
+	//   - hits_tocart_search—added to cart from search or category,
+	//   - hits_tocart_pdp—added to cart from the product description page,
+	//   - hits_tocart—added to cart total,
+	//   - session_view_search—sessions with impressions in search or category,
+	//   - session_view_pdp—sessions with impressions on the product description page,
+	//   - session_view—sessions total,
+	//   - conv_tocart_search—conversion to cart from search or category,
+	//   - conv_tocart_pdp—conversion to cart from a product description page,
+	//   - conv_tocart—total conversion to cart,
+	//   - returns—returned products,
+	//   - cancellations—canceled products,
+	//   - delivered_units—delivered products,
+	//   - position_category—position in search and category.
+	Metrics []GetAnalyticsDataFilterMetric `json:"metrics"`
+
+	// Number of elements that will be skipped in the response. For example, if `offset=10`, the response will start with the 11th element found
+	Offset int64 `json:"offset"`
+
+	// Report sorting settings
+	Sort []GetAnalyticsDataSort `json:"sort"`
+}
+
+type GetAnalyticsDataFilter struct {
 	// Sorting parameter. You can pass any attribute from the `dimension` and `metric` parameters except the `brand` attribute
 	Key string `json:"key"`
 
@@ -31,21 +88,6 @@ type GetAnalyticsDataParams struct {
 
 	// Value for comparison
 	Value string `json:"value"`
-	} `json:"filters"`
-
-	// Number of items in the respones:
-	//   - maximum is 1000,
-	//   - minimum is 1.
-	Limit int64 `json:"limit"`
-
-	// Specify up to 14 metrics. If there are more, you will get an error with the InvalidArgument code
-	Metrics []GetAnalyticsDataFilterMetric `json:"metrics"`
-
-	// Number of elements that will be skipped in the response. For example, if `offset=10`, the response will start with the 11th element found
-	Offset int64 `json:"offset"`
-
-	// Report sorting settings
-	Sort []GetAnalyticsDataSort `json:"sort"`
 }
 
 // Report sorting settings
@@ -61,37 +103,50 @@ type GetAnalyticsDataResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetAnalyticsDataResult `json:"result"`
-		// Data array
-		Data []struct {
-			// Data grouping in the report
-			Dimensions []struct {
-				// Identifier
-				Id string `json:"id"`
-
-				// Name
-				Name string `json:"name"`
-			} `json:"dimensions"`
-
-			// Metric values list
-			Metrics []float64 `json:"metrics"`
-		} `json:"data"`
-
-		// Total and average metrics values
-		Totals []float64 `json:"totals"`
-	} `json:"result"`
 
 	// Report creation time
 	Timestamp string `json:"timestamp"`
 }
 
+type GetAnalyticsDataResult struct {
+	// Data array
+	Data []GetAnalyticsDataResultData `json:"data"`
+
+	// Total and average metrics values
+	Totals []float64 `json:"totals"`
+}
+
+type GetAnalyticsDataResultData struct {
+	// Data grouping in the report
+	Dimensions []GetAnalyticsDataResultDimension `json:"dimensions"`
+
+	// Metric values list
+	Metrics []float64 `json:"metrics"`
+}
+
+type GetAnalyticsDataResultDimension struct {
+	// Identifier
+	Id string `json:"id"`
+
+	// Name
+	Name string `json:"name"`
+}
+
 // Specify the period and metrics that are required. The response will contain analytical data grouped by the `dimensions` parameter.
-func (c Analytics) GetAnalyticsData(params *GetAnalyticsDataParams) (*GetAnalyticsDataResponse, error) {
+//
+// There are restrictions for sellers without Premium subscription:
+//
+//   - data is available for the last 3 months,
+//   - some of the data grouping methods and metrics aren't available.
+//
+// There are no restrictions for sellers with Premium subscription
+func (c Analytics) GetAnalyticsData(ctx context.Context, params *GetAnalyticsDataParams) (*GetAnalyticsDataResponse, error) {
 	url := "/v1/analytics/data"
 
 	resp := &GetAnalyticsDataResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -117,9 +172,15 @@ type GetStocksOnWarehousesResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetStocksOnWarehousesResult `json:"result"`
+}
+
+type GetStocksOnWarehousesResult struct {
 	// Information about products and stocks
-		Rows []struct {
+	Rows []GetStocksOnWarehousesResultRow `json:"rows"`
+}
+
+type GetStocksOnWarehousesResultRow struct {
 	// Product identifier in the Ozon system, SKU
 	SKU int64 `json:"sku"`
 
@@ -140,17 +201,15 @@ type GetStocksOnWarehousesResponse struct {
 
 	// Name of the warehouse where the products are stored
 	WarehouseName string `json:"warehouse_name"`
-		} `json:"rows"`
-	} `json:"result"`
 }
 
 // Report on stocks and products movement at Ozon warehouses
-func (c Analytics) GetStocksOnWarehouses(params *GetStocksOnWarehousesParams) (*GetStocksOnWarehousesResponse, error) {
+func (c Analytics) GetStocksOnWarehouses(ctx context.Context, params *GetStocksOnWarehousesParams) (*GetStocksOnWarehousesResponse, error) {
 	url := "/v2/analytics/stock_on_warehouses"
 
 	resp := &GetStocksOnWarehousesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/analytics_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -24,7 +25,7 @@ func TestGetAnalyticsData(t *testing.T) {
 				DateFrom:  core.TimeFromString(t, "2006-01-02", "2020-09-01"),
 				DateTo:    core.TimeFromString(t, "2006-01-02", "2021-10-15"),
 				Dimension: []GetAnalyticsDataDimension{SKUDimension, DayDimension},
-				Metrics:   []GetAnalyticsDataFilterMetric{AdvViewAll},
+				Metrics:   []GetAnalyticsDataFilterMetric{HistViewPDP},
 				Sort: []GetAnalyticsDataSort{
 					{
 						Key:   HistViewPDP,
@@ -59,7 +60,8 @@ func TestGetAnalyticsData(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Analytics().GetAnalyticsData(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Analytics().GetAnalyticsData(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -119,7 +121,8 @@ func TestGetStocksOnWarehouses(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Analytics().GetStocksOnWarehouses(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Analytics().GetStocksOnWarehouses(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/brands.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 
 	core "github.com/diphantxm/ozon-api-client"
@@ -22,9 +23,18 @@ type ListCertifiedBrandsResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ListCertifiedBrandsResult `json:"result"`
+}
+
+type ListCertifiedBrandsResult struct {
 	// Certified brands details
-		BrandCertification []struct {
+	BrandCertification []ListCertifiedBrandsResultCertificate `json:"brand_certification"`
+
+	// Total number of brands
+	Total int64 `json:"total"`
+}
+
+type ListCertifiedBrandsResultCertificate struct {
 	// Brand name
 	BrandName string `json:"brand_name"`
 
@@ -32,20 +42,15 @@ type ListCertifiedBrandsResponse struct {
 	//   - true if the certificate is required;
 	//   - false if not
 	HasCertificate bool `json:"has_certificate"`
-		} `json:"brand_certification"`
-
-		// Total number of brands
-		Total int64 `json:"total"`
-	} `json:"result"`
 }
 
 // List of certified brands
-func (c Brands) List(params *ListCertifiedBrandsParams) (*ListCertifiedBrandsResponse, error) {
+func (c Brands) List(ctx context.Context, params *ListCertifiedBrandsParams) (*ListCertifiedBrandsResponse, error) {
 	url := "/v1/brand/company-certification/list"
 
 	resp := &ListCertifiedBrandsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/brands_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -52,7 +53,8 @@ func TestListCertifiedBrands(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Brands().List(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Brands().List(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/cancellations.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -31,13 +32,7 @@ type CancellationInfo struct {
 	PostingNumber string `json:"posting_number"`
 
 	// Cancellation reason
-	CancellationReason struct {
+	CancellationReason CancellationInfoReason `json:"cancellation_reason"`
-		// Cancellation reason identifier
-		Id int64 `json:"id"`
-
-		// Cancellation reason name
-		Name string `json:"name"`
-	} `json:"cancellation_reason"`
 
 	// Cancellation request creation date
 	CancelledAt time.Time `json:"cancelled_at"`
@@ -49,16 +44,7 @@ type CancellationInfo struct {
 	TPLIntegrationType string `json:"tpl_integration_type"`
 
 	// Cancellation request status
-	State struct {
+	State CancellationInfoState `json:"state"`
-		// Status identifier
-		Id int64 `json:"id"`
-
-		// Status name
-		Name string `json:"name"`
-
-		// Request status
-		State string `json:"state"`
-	} `json:"state"`
 
 	// Cancellation initiator
 	CancellationInitiator string `json:"cancellation_initiator"`
@@ -76,13 +62,32 @@ type CancellationInfo struct {
 	AutoApproveDate time.Time `json:"auto_approve_date"`
 }
 
+type CancellationInfoReason struct {
+	// Cancellation reason identifier
+	Id int64 `json:"id"`
+
+	// Cancellation reason name
+	Name string `json:"name"`
+}
+
+type CancellationInfoState struct {
+	// Status identifier
+	Id int64 `json:"id"`
+
+	// Status name
+	Name string `json:"name"`
+
+	// Request status
+	State string `json:"state"`
+}
+
 // Method for getting information about a rFBS cancellation request
-func (c Cancellations) GetInfo(params *GetCancellationInfoParams) (*GetCancellationInfoResponse, error) {
+func (c Cancellations) GetInfo(ctx context.Context, params *GetCancellationInfoParams) (*GetCancellationInfoResponse, error) {
 	url := "/v1/delivery-method/list"
 
 	resp := &GetCancellationInfoResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -134,7 +139,10 @@ type ListCancellationsResponse struct {
 	Total int32 `json:"total"`
 
 	// Counter of requests in different statuses
-	Counters struct {
+	Counters ListCancellationResponseCounters `json:"counters"`
+}
+
+type ListCancellationResponseCounters struct {
 	// Number of requests for approval
 	OnApproval int64 `json:"on_approval"`
 
@@ -143,16 +151,15 @@ type ListCancellationsResponse struct {
 
 	// Number of rejected requests
 	Rejected int64 `json:"rejected"`
-	} `json:"counters"`
 }
 
 // Method for getting a list of rFBS cancellation requests
-func (c Cancellations) List(params *ListCancellationsParams) (*ListCancellationsResponse, error) {
+func (c Cancellations) List(ctx context.Context, params *ListCancellationsParams) (*ListCancellationsResponse, error) {
 	url := "/v1/conditional-cancellation/list"
 
 	resp := &ListCancellationsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -175,12 +182,12 @@ type ApproveRejectCancellationsResponse struct {
 
 // The method allows to approve an rFBS cancellation request in the ON_APPROVAL status.
 // The order will be canceled and the money will be returned to the customer
-func (c Cancellations) Approve(params *ApproveRejectCancellationsParams) (*ApproveRejectCancellationsResponse, error) {
+func (c Cancellations) Approve(ctx context.Context, params *ApproveRejectCancellationsParams) (*ApproveRejectCancellationsResponse, error) {
 	url := "/v1/conditional-cancellation/approve"
 
 	resp := &ApproveRejectCancellationsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -192,12 +199,12 @@ func (c Cancellations) Approve(params *ApproveRejectCancellationsParams) (*Appro
 // The method allows to reject an rFBS cancellation request in the ON_APPROVAL status. Explain your decision in the comment parameter.
 //
 // The order will remain in the same status and must be delivered to the customer
-func (c Cancellations) Reject(params *ApproveRejectCancellationsParams) (*ApproveRejectCancellationsResponse, error) {
+func (c Cancellations) Reject(ctx context.Context, params *ApproveRejectCancellationsParams) (*ApproveRejectCancellationsResponse, error) {
 	url := "/v1/conditional-cancellation/reject"
 
 	resp := &ApproveRejectCancellationsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/cancellations_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -62,7 +63,8 @@ func TestGetCancellationInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Cancellations().GetInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Cancellations().GetInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -171,7 +173,8 @@ func TestListCancellations(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Cancellations().List(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Cancellations().List(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -215,7 +218,8 @@ func TestApproveCancellations(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Cancellations().Approve(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Cancellations().Approve(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -259,7 +263,8 @@ func TestRejectCancellations(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Cancellations().Reject(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Cancellations().Reject(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/categories.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 
 	core "github.com/diphantxm/ozon-api-client"
@@ -22,7 +23,10 @@ type GetProductTreeResponse struct {
 	core.CommonResponse
 
 	// Category list
-	Result []struct {
+	Result []GetProductTreeResult `json:"result"`
+}
+
+type GetProductTreeResult struct {
 	// Category identifier
 	CategoryId int64 `json:"category_id"`
 
@@ -31,19 +35,18 @@ type GetProductTreeResponse struct {
 
 	// Category name
 	Title string `json:"title"`
-	} `json:"result"`
 }
 
 // Returns product categories in the tree view.
 // New products can be created in the last level categories only.
 // This means that you need to match these particular categories with the categories of your site.
 // It is not possible to create categories by user request
-func (c Categories) Tree(params *GetProductTreeParams) (*GetProductTreeResponse, error) {
+func (c Categories) Tree(ctx context.Context, params *GetProductTreeParams) (*GetProductTreeResponse, error) {
 	url := "/v2/category/tree"
 
 	resp := &GetProductTreeResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -67,9 +70,18 @@ type GetCategoryAttributesResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []GetCategoryAttributesResult `json:"result"`
+}
+
+type GetCategoryAttributesResult struct {
 	// Array of product characteristics
-		Attributes []struct {
+	Attributes []GetCategoryAttributesResultAttribute `json:"attributes"`
+
+	// Category identifier
+	CategoryId int64 `json:"category_id"`
+}
+
+type GetCategoryAttributesResultAttribute struct {
 	// Indication that the dictionary attribute values depend on the category:
 	//   - true — the attribute has its own set of values for each category.
 	//   - false — the attribute has the same set of values for all categories
@@ -114,11 +126,6 @@ type GetCategoryAttributesResponse struct {
 
 	// Characteristic type
 	Type string `json:"type"`
-		} `json:"attributes"`
-
-		// Category identifier
-		CategoryId int64 `json:"category_id"`
-	} `json:"result"`
 }
 
 // Getting characteristics for specified product category.
@@ -128,12 +135,12 @@ type GetCategoryAttributesResponse struct {
 // You can check whether the attribute has a nested directory by the `dictionary_id` parameter.
 // The 0 value means there is no directory. If the value is different, then there are directories.
 // You can get them using the `/v2/category/attribute/values` method
-func (c Categories) Attributes(params *GetCategoryAttributesParams) (*GetCategoryAttributesResponse, error) {
+func (c Categories) Attributes(ctx context.Context, params *GetCategoryAttributesParams) (*GetCategoryAttributesResponse, error) {
 	url := "/v3/category/attribute"
 
 	resp := &GetCategoryAttributesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -167,24 +174,26 @@ type GetAttributeDictionaryResponse struct {
 	HasNext bool `json:"has_next"`
 
 	// Method result
-	Result []struct {
+	Result []GetAttributeDictionaryResult `json:"result"`
+}
+
+type GetAttributeDictionaryResult struct {
 	Id      int64  `json:"id"`
 	Info    string `json:"info"`
 	Picture string `json:"picture"`
 
 	// Product characteristic value
 	Value string `json:"value"`
-	} `json:"result"`
 }
 
 // You can use the `/v3/category/attribute` method to check if an attribute has a nested directory.
 // If there are directories, get them using this method
-func (c Categories) AttributesDictionary(params *GetAttributeDictionaryParams) (*GetAttributeDictionaryResponse, error) {
+func (c Categories) AttributesDictionary(ctx context.Context, params *GetAttributeDictionaryParams) (*GetAttributeDictionaryResponse, error) {
 	url := "/v2/category/attribute/values"
 
 	resp := &GetAttributeDictionaryResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/categories_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -48,7 +49,8 @@ func TestGetProductTree(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Categories().Tree(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Categories().Tree(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -119,7 +121,8 @@ func TestGetCategoryAttributes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Categories().Attributes(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Categories().Attributes(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -199,7 +202,8 @@ func TestGetAttributeDictionary(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Categories().AttributesDictionary(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Categories().AttributesDictionary(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/certificates.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -15,34 +16,40 @@ type ListOfAccordanceTypesResponse struct {
 	core.CommonResponse
 
 	// Accordance types
-	Result struct {
+	Result ListOfAccordanceTypesResult `json:"result"`
-		// Main accordance types
+}
-		Base []struct {
-			// Accordance type code
-			Code string `json:"code"`
 
-			// Accordance type description
+type ListOfAccordanceTypesResult struct {
-			Title string `json:"title"`
+	// Main accordance types
-		} `json:"base"`
+	Base []ListOfAccordanceTypesResultBase `json:"base"`
 
 	// Main accordance types related to dangerous products
-		Hazard []struct {
+	Hazard []ListOfAccordanceTypesResultHazard `json:"hazard"`
+}
+
+type ListOfAccordanceTypesResultBase struct {
+	// Accordance type code
+	Code string `json:"code"`
+
+	// Accordance type description
+	Title string `json:"title"`
+}
+
+type ListOfAccordanceTypesResultHazard struct {
 	// Accordance type code
 	Code string `json:"code"`
 
 	// Accordance type description
 	Title string `json:"title"`
-		} `json:"hazard"`
-	} `json:"result"`
 }
 
 // List of accordance types (version 2)
-func (c Certificates) ListOfAccordanceTypes() (*ListOfAccordanceTypesResponse, error) {
+func (c Certificates) ListOfAccordanceTypes(ctx context.Context) (*ListOfAccordanceTypesResponse, error) {
 	url := "/v2/product/certificate/accordance-types/list"
 
 	resp := &ListOfAccordanceTypesResponse{}
 
-	response, err := c.client.Request(http.MethodGet, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodGet, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -55,22 +62,24 @@ type DirectoryOfDocumentTypesResponse struct {
 	core.CommonResponse
 
 	// List of certificate types and names
-	Result []struct {
+	Result []DirectoryOfDocumentTypesResult `json:"result"`
+}
+
+type DirectoryOfDocumentTypesResult struct {
 	// Certificate name
 	Name string `json:"name"`
 
 	// Certificate type
 	Value string `json:"value"`
-	} `json:"result"`
 }
 
 // Directory of document types
-func (c Certificates) DirectoryOfDocumentTypes() (*DirectoryOfDocumentTypesResponse, error) {
+func (c Certificates) DirectoryOfDocumentTypes(ctx context.Context) (*DirectoryOfDocumentTypesResponse, error) {
 	url := "/v1/product/certificate/types"
 
 	resp := &DirectoryOfDocumentTypesResponse{}
 
-	response, err := c.client.Request(http.MethodGet, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodGet, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -91,28 +100,32 @@ type ListOfCertifiedCategoriesResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ListOfCertifiedCategoriesResult `json:"reult"`
+}
+
+type ListOfCertifiedCategoriesResult struct {
 	// Certified categories details
-		Certification []struct {
+	Certification []ListOfCertifiedCategoriesResultCert `json:"certification"`
+
+	// Total number of categories
+	Total int64 `json:"total"`
+}
+
+type ListOfCertifiedCategoriesResultCert struct {
 	// Category name
 	CategoryName string `json:"category_name"`
 
 	// Indication of a mandatory category
 	IsRequired bool `json:"is_required"`
-		} `json:"certification"`
-
-		// Total number of categories
-		Total int64 `json:"total"`
-	} `json:"reult"`
 }
 
 // List of certified categories
-func (c Certificates) ListOfCertifiedCategories(params *ListOfCertifiedCategoriesParams) (*ListOfCertifiedCategoriesResponse, error) {
+func (c Certificates) ListOfCertifiedCategories(ctx context.Context, params *ListOfCertifiedCategoriesParams) (*ListOfCertifiedCategoriesResponse, error) {
 	url := "/v1/product/certificate/types"
 
 	resp := &ListOfCertifiedCategoriesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -137,12 +150,12 @@ type LinkCertificateToProductResponse struct {
 }
 
 // Link the certificate to the product
-func (c Certificates) LinkToProduct(params *LinkCertificateToProductParams) (*LinkCertificateToProductResponse, error) {
+func (c Certificates) LinkToProduct(ctx context.Context, params *LinkCertificateToProductParams) (*LinkCertificateToProductResponse, error) {
 	url := "/v1/product/certificate/bind"
 
 	resp := &LinkCertificateToProductResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -160,7 +173,10 @@ type DeleteCertificateResponse struct {
 	core.CommonResponse
 
 	// Result of deleting the certificate
-	Result struct {
+	Result DeleteCertificateResult `json:"result"`
+}
+
+type DeleteCertificateResult struct {
 	// Indication that a certificate has been deleted:
 	//   - true — deleted
 	//   - false — not deleted
@@ -168,16 +184,15 @@ type DeleteCertificateResponse struct {
 
 	// Description of errors during certificate deletion
 	ErrorMessage string `json:"error_message"`
-	} `json:"result"`
 }
 
 // Delete certificate
-func (c Certificates) Delete(params *DeleteCertificateParams) (*DeleteCertificateResponse, error) {
+func (c Certificates) Delete(ctx context.Context, params *DeleteCertificateParams) (*DeleteCertificateResponse, error) {
 	url := "/v1/product/certificate/delete"
 
 	resp := &DeleteCertificateResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -195,7 +210,10 @@ type GetCertificateInfoResponse struct {
 	core.CommonResponse
 
 	// Certificate information
-	Result struct {
+	Result GetCertificateInfoResult `json:"result"`
+}
+
+type GetCertificateInfoResult struct {
 	// Identifier
 	CertificateId int32 `json:"certificate_id"`
 
@@ -228,16 +246,15 @@ type GetCertificateInfoResponse struct {
 
 	// Number of products associated with a certificate
 	ProductsCount int32 `json:"products_count"`
-	} `json:"result"`
 }
 
 // Certificate information
-func (c Certificates) GetInfo(params *GetCertificateInfoParams) (*GetCertificateInfoResponse, error) {
+func (c Certificates) GetInfo(ctx context.Context, params *GetCertificateInfoParams) (*GetCertificateInfoResponse, error) {
 	url := "/v1/product/certificate/info"
 
 	resp := &GetCertificateInfoResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -268,9 +285,18 @@ type ListCertificatesResponse struct {
 	core.CommonResponse
 
 	// Certificates
-	Result struct {
+	Result ListCertificatesResult `json:"result"`
+}
+
+type ListCertificatesResult struct {
 	// Сertificate information
-		Certificates []struct {
+	Certificates []ListCertificatesResultCert `json:"certificates"`
+
+	// Number of pages
+	PageCount int32 `json:"page_count"`
+}
+
+type ListCertificatesResultCert struct {
 	// Identifier
 	CertificateId int32 `json:"certificate_id"`
 
@@ -303,20 +329,15 @@ type ListCertificatesResponse struct {
 
 	// Number of products associated with a certificate
 	ProductsCount int32 `json:"products_count"`
-		} `json:"certificates"`
-
-		// Number of pages
-		PageCount int32 `json:"page_count"`
-	} `json:"result"`
 }
 
 // Certificates list
-func (c Certificates) List(params *ListCertificatesParams) (*ListCertificatesResponse, error) {
+func (c Certificates) List(ctx context.Context, params *ListCertificatesParams) (*ListCertificatesResponse, error) {
 	url := "/v1/product/certificate/list"
 
 	resp := &ListCertificatesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -329,21 +350,23 @@ type ProductStatusesResponse struct {
 	core.CommonResponse
 
 	// Product statuses
-	Result []struct {
+	Result []ProductStatusesResult `json:"result"`
+}
+
+type ProductStatusesResult struct {
 	// Product status code when linking it to the certificate
 	Code string `json:"code"`
 
 	// Status description
 	Name string `json:"name"`
-	} `json:"result"`
 }
 
-func (c Certificates) ProductStatuses() (*ProductStatusesResponse, error) {
+func (c Certificates) ProductStatuses(ctx context.Context) (*ProductStatusesResponse, error) {
 	url := "/v1/product/certificate/list"
 
 	resp := &ProductStatusesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -370,7 +393,10 @@ type ListProductsForCertificateResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ListProductsForCertificateResult `json:"result"`
+}
+
+type ListProductsForCertificateResult struct {
 	// List of products
 	Items []struct {
 		// Product identifier
@@ -382,16 +408,15 @@ type ListProductsForCertificateResponse struct {
 
 	// Number of products found
 	Count int64 `json:"count"`
-	} `json:"result"`
 }
 
 // A method for getting a list of possible statuses of products when binding them to a certificate
-func (c Certificates) ListProductsForCertificate(params *ListProductsForCertificateParams) (*ListProductsForCertificateResponse, error) {
+func (c Certificates) ListProductsForCertificate(ctx context.Context, params *ListProductsForCertificateParams) (*ListProductsForCertificateResponse, error) {
 	url := "/v1/product/certificate/products/list"
 
 	resp := &ListProductsForCertificateResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -412,7 +437,10 @@ type UnlinkFromProductResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []UnlinkFromProductResult `json:"result"`
+}
+
+type UnlinkFromProductResult struct {
 	// Error message when unbinding a product
 	Error string `json:"error"`
 
@@ -423,16 +451,15 @@ type UnlinkFromProductResponse struct {
 	//   - true — it was unbound,
 	//   - false — it is still bound
 	Updated bool `json:"updated"`
-	} `json:"result"`
 }
 
 // Unbind products from a certificate
-func (c Certificates) UnlinkFromProduct(params *UnlinkFromProductParams) (*UnlinkFromProductResponse, error) {
+func (c Certificates) UnlinkFromProduct(ctx context.Context, params *UnlinkFromProductParams) (*UnlinkFromProductResponse, error) {
 	url := "/v1/product/certificate/unbind"
 
 	resp := &UnlinkFromProductResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -445,22 +472,24 @@ type PossibleRejectReasonsResponse struct {
 	core.CommonResponse
 
 	// Certificate rejection reasons
-	Result []struct {
+	Result []PossibleRejectReasonsResult `json:"result"`
+}
+
+type PossibleRejectReasonsResult struct {
 	// Сode of a certificate rejection reason
 	Code string `json:"code"`
 
 	// Description of a certificate rejection reason
 	Name string `json:"name"`
-	} `json:"result"`
 }
 
 // Possible certificate rejection reasons
-func (c Certificates) PossibleRejectReasons() (*PossibleRejectReasonsResponse, error) {
+func (c Certificates) PossibleRejectReasons(ctx context.Context) (*PossibleRejectReasonsResponse, error) {
 	url := "/v1/product/certificate/rejection_reasons/list"
 
 	resp := &PossibleRejectReasonsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -473,21 +502,23 @@ type PossibleStatusesResponse struct {
 	core.CommonResponse
 
 	// Possible certificate statuses
-	Result []struct {
+	Result []PossibleStatusesResult `json:"result"`
+}
+
+type PossibleStatusesResult struct {
 	// Certificate status code
 	Code string `json:"code"`
 
 	// Status description
 	Name string `json:"name"`
-	} `json:"result"`
 }
 
-func (c Certificates) PossibleStatuses() (*PossibleStatusesResponse, error) {
+func (c Certificates) PossibleStatuses(ctx context.Context) (*PossibleStatusesResponse, error) {
 	url := "/v1/product/certificate/status/list"
 
 	resp := &PossibleStatusesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -526,12 +557,12 @@ type AddCertificatesForProductsResponse struct {
 }
 
 // Adding certificates for products
-func (c Certificates) AddForProducts(params *AddCertificatesForProductsParams) (*AddCertificatesForProductsResponse, error) {
+func (c Certificates) AddForProducts(ctx context.Context, params *AddCertificatesForProductsParams) (*AddCertificatesForProductsResponse, error) {
 	url := "/v1/product/certificate/create"
 
 	resp := &AddCertificatesForProductsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, map[string]string{
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, map[string]string{
 		"Content-Type": "multipart/form-data",
 	})
 	if err != nil {

ozon/certificates_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 	"time"
@@ -51,7 +52,8 @@ func TestListOfAccordanceTypes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().ListOfAccordanceTypes()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().ListOfAccordanceTypes(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -113,7 +115,8 @@ func TestDirectoryOfDocumentTypes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().DirectoryOfDocumentTypes()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().DirectoryOfDocumentTypes(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -168,7 +171,8 @@ func TestListOfCertifiedCategories(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().ListOfCertifiedCategories(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().ListOfCertifiedCategories(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -215,7 +219,8 @@ func TestLinkCertificateToProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().LinkToProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().LinkToProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -264,7 +269,8 @@ func TestDeleteCertificate(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().Delete(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().Delete(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -322,7 +328,8 @@ func TestGetCertificateInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().GetInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().GetInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -395,7 +402,8 @@ func TestListCertificates(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().List(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().List(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -441,7 +449,8 @@ func TestProductStatuses(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().ProductStatuses()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().ProductStatuses(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -498,7 +507,8 @@ func TestListProductsForCertificate(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().ListProductsForCertificate(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().ListProductsForCertificate(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -551,7 +561,8 @@ func TestUnlinkFromProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().UnlinkFromProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().UnlinkFromProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -597,7 +608,8 @@ func TestPossibleRejectReasons(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().PossibleRejectReasons()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().PossibleRejectReasons(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -643,7 +655,8 @@ func TestPossibleStatuses(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().PossibleStatuses()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().PossibleStatuses(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -695,7 +708,8 @@ func TestAddCertificatesForProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Certificates().AddForProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Certificates().AddForProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/chats.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -38,9 +39,30 @@ type ListChatsResponse struct {
 	core.CommonResponse
 
 	// Chats data
-	Chats []struct {
+	Chats []ListChatsChat `json:"chats"`
+
+	// Total number of chats
+	TotalChatsCount int64 `json:"total_chats_count"`
+
+	// Total number of unread messages
+	TotalUnreadCount int64 `json:"total_unread_count"`
+}
+
+type ListChatsChat struct {
 	// Chat data
-		Chat struct {
+	Chat ListChatsChatData `json:"chat"`
+
+	// Identifier of the first unread chat message
+	FirstUnreadMessageId string `json:"first_unread_message_id"`
+
+	// Identifier of the last message in the chat
+	LastMessageId string `json:"last_message_id"`
+
+	// Number of unread messages in the chat
+	UnreadCount int64 `json:"unread_count"`
+}
+
+type ListChatsChatData struct {
 	// Chat identifier
 	ChatId string `json:"chat_id"`
 
@@ -57,32 +79,15 @@ type ListChatsResponse struct {
 
 	// Chat creation date
 	CreatedAt time.Time `json:"created_at"`
-		} `json:"chat"`
-
-		// Identifier of the first unread chat message
-		FirstUnreadMessageId string `json:"first_unread_message_id"`
-
-		// Identifier of the last message in the chat
-		LastMessageId string `json:"last_message_id"`
-
-		// Number of unread messages in the chat
-		UnreadCount int64 `json:"unread_count"`
-	} `json:"chats"`
-
-	// Total number of chats
-	TotalChatsCount int64 `json:"total_chats_count"`
-
-	// Total number of unread messages
-	TotalUnreadCount int64 `json:"total_unread_count"`
 }
 
 // Returns information about chats by specified filters
-func (c Chats) List(params *ListChatsParams) (*ListChatsResponse, error) {
+func (c Chats) List(ctx context.Context, params *ListChatsParams) (*ListChatsResponse, error) {
 	url := "/v2/chat/list"
 
 	resp := &ListChatsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -107,12 +112,12 @@ type SendMessageResponse struct {
 }
 
 // Sends a message to an existing chat by its identifier
-func (c Chats) SendMessage(params *SendMessageParams) (*SendMessageResponse, error) {
+func (c Chats) SendMessage(ctx context.Context, params *SendMessageParams) (*SendMessageResponse, error) {
 	url := "/v1/chat/send/message"
 
 	resp := &SendMessageResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -140,12 +145,12 @@ type SendFileResponse struct {
 }
 
 // Sends a file to an existing chat by its identifier
-func (c Chats) SendFile(params *SendFileParams) (*SendFileResponse, error) {
+func (c Chats) SendFile(ctx context.Context, params *SendFileParams) (*SendFileResponse, error) {
 	url := "/v1/chat/send/file"
 
 	resp := &SendFileResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -179,7 +184,10 @@ type ChatHistoryResponse struct {
 	HasNext bool `json:"has_next"`
 
 	// An array of messages sorted according to the direction parameter in the request body
-	Messages []struct {
+	Messages []ChatHistoryMessage `json:"messages"`
+}
+
+type ChatHistoryMessage struct {
 	// Message creation date
 	CreatedAt time.Time `json:"created_at"`
 
@@ -193,7 +201,10 @@ type ChatHistoryResponse struct {
 	MessageId string `json:"message_id"`
 
 	// Chat participant identifier
-		User struct {
+	User ChatHistoryMessageUser `json:"user"`
+}
+
+type ChatHistoryMessageUser struct {
 	// Chat participant identifier
 	Id string `json:"id"`
 
@@ -204,17 +215,15 @@ type ChatHistoryResponse struct {
 	//   - courier
 	//   - support
 	Type string `json:"type"`
-		} `json:"user"`
-	} `json:"messages"`
 }
 
 // Chat history
-func (c Chats) History(params *ChatHistoryParams) (*ChatHistoryResponse, error) {
+func (c Chats) History(ctx context.Context, params *ChatHistoryParams) (*ChatHistoryResponse, error) {
 	url := "/v2/chat/history"
 
 	resp := &ChatHistoryResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -238,55 +247,18 @@ type UpdateChatResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []UpdateChatResult `json:"result"`
+}
+
+type UpdateChatResult struct {
 	// An order or a product user wrote about in the chat
-		Context struct {
+	Context UpdateChatResultContext `json:"context"`
-			// Product inforamtion
-			Item struct {
-				// Product identifier in the Ozon system, SKU
-				SKU int64 `json:"sku"`
-			} `json:"item"`
-
-			// Order information
-			Order struct {
-				// Order number
-				OrderNumber string `json:"order_number"`
-
-				// Shipment information
-				Postings []struct {
-					// Delivery scheme:
-					//   - FBO
-					//   - FBS
-					//   - RFBS
-					//   - Crossborder
-					DeliverySchema string `json:"delivery_schema"`
-
-					// Shipment number
-					PostingNumber string `json:"posting_number"`
-
-					// List of product identifiers in the shipment
-					SKUList []int64 `json:"sku_list"`
-				} `json:"postings"`
-			} `json:"order"`
-		} `json:"context"`
 
 	// Creation date and time
 	CreatedAt time.Time `json:"created_at"`
 
 	// Information about the file in the chat. Displayed only for `type = file`
-		File struct {
+	File UpdateChatResultFile `json:"file"`
-			// File type
-			Mime string `json:"mime"`
-
-			// File name
-			Name string `json:"name"`
-
-			// File size in bytes
-			Size int64 `json:"size"`
-
-			// File URL
-			URL string `json:"url"`
-		} `json:"file"`
 
 	// File identifier
 	Id uint64 `json:"id"`
@@ -300,7 +272,60 @@ type UpdateChatResponse struct {
 	Type string `json:"type"`
 
 	// Chat participant information
-		User struct {
+	User UpdateChatResultUser `json:"user"`
+}
+
+type UpdateChatResultContext struct {
+	// Product inforamtion
+	Item UpdateChatResultContextItem `json:"item"`
+
+	// Order information
+	Order UpdateChatResultContextOrder `json:"order"`
+}
+
+type UpdateChatResultContextItem struct {
+	// Product identifier in the Ozon system, SKU
+	SKU int64 `json:"sku"`
+}
+
+type UpdateChatResultContextOrder struct {
+	// Order number
+	OrderNumber string `json:"order_number"`
+
+	// Shipment information
+	Postings []UpdateChatResultContextOrderPosting `json:"postings"`
+}
+
+type UpdateChatResultContextOrderPosting struct {
+	// Delivery scheme:
+	//   - FBO
+	//   - FBS
+	//   - RFBS
+	//   - Crossborder
+	DeliverySchema string `json:"delivery_schema"`
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// List of product identifiers in the shipment
+	SKUList []int64 `json:"sku_list"`
+}
+
+type UpdateChatResultFile struct {
+	// File type
+	Mime string `json:"mime"`
+
+	// File name
+	Name string `json:"name"`
+
+	// File size in bytes
+	Size int64 `json:"size"`
+
+	// File URL
+	URL string `json:"url"`
+}
+
+type UpdateChatResultUser struct {
 	// Chat participant identifier
 	Id string `json:"id"`
 
@@ -310,17 +335,15 @@ type UpdateChatResponse struct {
 	//   - crm—system messages
 	//   - courier
 	Type string `json:"type"`
-		} `json:"user"`
-	} `json:"result"`
 }
 
 // Update chat
-func (c Chats) Update(params *UpdateChatParams) (*UpdateChatResponse, error) {
+func (c Chats) Update(ctx context.Context, params *UpdateChatParams) (*UpdateChatResponse, error) {
 	url := "/v1/chat/updates"
 
 	resp := &UpdateChatResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -338,19 +361,21 @@ type CreateNewChatResponse struct {
 	core.CommonResponse
 
 	//Method result
-	Result struct {
+	Result CreateNewChatResult `json:"result"`
+}
+
+type CreateNewChatResult struct {
 	// Chat identifier
 	ChatId string `json:"chat_id"`
-	} `json:"result"`
 }
 
 // Creates a new chat on the shipment with the customer. For example, to clarify the address or the product model
-func (c Chats) Create(params *CreateNewChatParams) (*CreateNewChatResponse, error) {
+func (c Chats) Create(ctx context.Context, params *CreateNewChatParams) (*CreateNewChatResponse, error) {
 	url := "/v1/chat/start"
 
 	resp := &CreateNewChatResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -375,12 +400,12 @@ type MarkAsReadResponse struct {
 }
 
 // A method for marking the selected message and messages before it as read
-func (c Chats) MarkAsRead(params *MarkAsReadParams) (*MarkAsReadResponse, error) {
+func (c Chats) MarkAsRead(ctx context.Context, params *MarkAsReadParams) (*MarkAsReadResponse, error) {
 	url := "/v2/chat/read"
 
 	resp := &MarkAsReadResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/chats_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -61,7 +62,8 @@ func TestListChats(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().List(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().List(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -119,7 +121,8 @@ func TestSendMessage(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().SendMessage(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().SendMessage(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -167,7 +170,8 @@ func TestSendFile(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().SendFile(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().SendFile(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -230,7 +234,8 @@ func TestChatHistory(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().History(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().History(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -296,7 +301,8 @@ func TestUpdateChat(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().Update(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().Update(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -344,7 +350,8 @@ func TestCreateNewChat(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().Create(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().Create(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -397,7 +404,8 @@ func TestMarkAsRead(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Chats().MarkAsRead(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Chats().MarkAsRead(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/common.go

@@ -1,5 +1,11 @@
 package ozon
 
+import "time"
+
+const (
+	testTimeout = 5 * time.Second
+)
+
 type Order string
 
 const (
@@ -37,13 +43,7 @@ const (
 	CancellationsMetric GetAnalyticsDataFilterMetric = "cancellations"
 	OrderedUnits        GetAnalyticsDataFilterMetric = "ordered_units"
 	DeliveredUnits      GetAnalyticsDataFilterMetric = "delivered_units"
-	AdvViewPDP            GetAnalyticsDataFilterMetric = "adv_view_pdp"
-	AdvViewSearchCategory GetAnalyticsDataFilterMetric = "adv_view_search_category"
-	AdvViewAll            GetAnalyticsDataFilterMetric = "adv_view_all"
-	AdvSumAll             GetAnalyticsDataFilterMetric = "adv_sum_all"
 	PositionCategory    GetAnalyticsDataFilterMetric = "position_category"
-	PostingsMetric        GetAnalyticsDataFilterMetric = "postings"
-	PostingsPremium       GetAnalyticsDataFilterMetric = "postings_premium"
 )
 
 type WarehouseType string
@@ -377,3 +377,166 @@ const (
 	StrategyCreated          StrategyUpdateType = "strategyCreated"
 	StrategyItemsListChanged StrategyUpdateType = "strategyItemsListChanged"
 )
+
+type ShipmentCertificateFilterStatus string
+
+const (
+	// new
+	ShitmentCertificateFilterNew ShipmentCertificateFilterStatus = "new"
+
+	// retry creation
+	ShitmentCertificateFilterAwaitingRetry ShipmentCertificateFilterStatus = "awaiting-retry"
+
+	// is being packaged
+	ShitmentCertificateFilterInProcess ShipmentCertificateFilterStatus = "in_process"
+
+	// created
+	ShitmentCertificateFilterSuccess ShipmentCertificateFilterStatus = "success"
+
+	// creation error
+	ShitmentCertificateFilterError ShipmentCertificateFilterStatus = "error"
+
+	// sent
+	ShitmentCertificateFilterSend ShipmentCertificateFilterStatus = "sent"
+
+	// received
+	ShitmentCertificateFilterReceived ShipmentCertificateFilterStatus = "received"
+
+	// packaged
+	ShitmentCertificateFilterFormed ShipmentCertificateFilterStatus = "formed"
+
+	// canceled
+	ShitmentCertificateFilterCancelled ShipmentCertificateFilterStatus = "cancelled"
+
+	// in the queue for packaging
+	ShitmentCertificateFilterPending ShipmentCertificateFilterStatus = "pending"
+
+	// in the queue for completion
+	ShitmentCertificateFilterCompletionEnqueued ShipmentCertificateFilterStatus = "completion_enqueued"
+
+	// in the process of completion
+	ShitmentCertificateFilterCompletionProcessing ShipmentCertificateFilterStatus = "completion_processing"
+
+	// completion error
+	ShitmentCertificateFilterCompletionFailed ShipmentCertificateFilterStatus = "completion_failed"
+
+	// in the queue for cancellation
+	ShitmentCertificateFilterCancelationEnqueued ShipmentCertificateFilterStatus = "cancelation_enqueued"
+
+	// in the process of cancellation
+	ShitmentCertificateFilterCancelationProcessing ShipmentCertificateFilterStatus = "cancelation_processing"
+
+	// cancellation error
+	ShitmentCertificateFilterCancelationFailed ShipmentCertificateFilterStatus = "cancelation_failed"
+
+	// completed
+	ShitmentCertificateFilterCompleted ShipmentCertificateFilterStatus = "completed"
+
+	// closed
+	ShitmentCertificateFilterClosed ShipmentCertificateFilterStatus = "closed"
+)
+
+type PRROptionStatus string
+
+const (
+	// carrying the bulky product using the elevator
+	PRROptionLift PRROptionStatus = "lift"
+
+	// carrying the bulky product upstairs
+	PRROptionStairs PRROptionStatus = "stairs"
+
+	// the customer canceled the service,
+	// you don't need to lift the shipment
+	PRROptionNone PRROptionStatus = "none"
+
+	// delivery is included in the price.
+	// According to the offer you need to
+	// deliver products to the floor
+	PRROptionDeliveryDefault PRROptionStatus = "delivery_default"
+)
+
+type GetFBSReturnsFilterStatus string
+
+const (
+	ReturnedToSeller          GetFBSReturnsFilterStatus = "returned_to_seller"
+	WaitingForSeller          GetFBSReturnsFilterStatus = "waiting_for_seller"
+	AcceptedFromCustomer      GetFBSReturnsFilterStatus = "accepted_from_customer"
+	CancelledWithCompensation GetFBSReturnsFilterStatus = "cancelled_with_compensation"
+	ReadyForShipment          GetFBSReturnsFilterStatus = "ready_for_shipment"
+)
+
+type GetFBOReturnsFilterStatus string
+
+const (
+	GetFBOReturnsFilterStatusReturnedToOzon GetFBOReturnsFilterStatus = "ReturnedToOzon"
+	GetFBOReturnsFilterStatusCancelled      GetFBOReturnsFilterStatus = "Cancelled"
+)
+
+type GetFBOReturnsReturnStatus string
+
+const (
+	GetFBOReturnsReturnStatusCancelled            GetFBOReturnsReturnStatus = "Возврат отменен"
+	GetFBOReturnsReturnStatusAcceptedFromCustomer GetFBOReturnsReturnStatus = "Принят от покупателя"
+	GetFBOReturnsReturnStatusReceivedAtOzon       GetFBOReturnsReturnStatus = "Получен в Ozon"
+)
+
+type DigitalActType string
+
+const (
+	// acceptance certificate
+	DigitalActTypeOfAcceptance DigitalActType = "act_of_acceptance"
+
+	// discrepancy certificate
+	DigitalActTypeOfMismatch DigitalActType = "act_of_mismatch"
+
+	// surplus certificate
+	DigitalActTypeOfExcess DigitalActType = "act_of_excess"
+)
+
+type PriceStrategy string
+
+const (
+	// enable
+	PriceStrategyEnabled PriceStrategy = "ENABLED"
+
+	// disable
+	PriceStrategyDisabled PriceStrategy = "DISABLED"
+
+	// don't change anything. Default value
+	PriceStrategyUnknown PriceStrategy = "UNKNOWN"
+)
+
+type FBPFilter string
+
+const (
+	// all shipments matching other filters will be returned in the response
+	FBPFilterAll FBPFilter = "all"
+
+	// only FBP shipments will be returned
+	FBPFilterOnly FBPFilter = "only"
+
+	// all shipments except FBP will be returned
+	FBPFilterWithout FBPFilter = "without"
+)
+
+type InvoiceCurrency string
+
+const (
+	// dollar
+	InvoiceCurrencyUSD InvoiceCurrency = "USD"
+
+	// euro
+	InvoiceCurrencyEUR InvoiceCurrency = "EUR"
+
+	// Turkish lira
+	InvoiceCurrencyTRY InvoiceCurrency = "TRY"
+
+	// yuan
+	InvoiceCurrencyCNY InvoiceCurrency = "CNY"
+
+	// ruble
+	InvoiceCurrencyRUB InvoiceCurrency = "RUB"
+
+	// pound sterling
+	InvoiceCurrencyGBP InvoiceCurrency = "GBP"
+)

ozon/fbo.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -56,41 +57,15 @@ type GetFBOShipmentsListResponse struct {
 	core.CommonResponse
 
 	// Shipments list
-	Result []struct {
+	Result []GetFBOShipmentsListResult `json:"result"`
+}
+
+type GetFBOShipmentsListResult struct {
 	// Additional data for shipment list
-		AdditionalData []struct {
+	AdditionalData []GetFBOShipmentsListResultAdditionalData `json:"additional_data"`
-			Key   string `json:"key"`
-			Value string `json:"value"`
-		} `json:"additional_data"`
 
 	// Analytical data
-		AnalyticsData struct {
+	AnalyticsData GetFBOShipmentsListResultAnalyticsData `json:"analytics_data"`
-			// Delivery city
-			City string `json:"city"`
-
-			// Delivery method
-			DeliveryType string `json:"delivery_type"`
-
-			// Indication that the recipient is a legal person
-			//   * true — a legal person,
-			//   * false — a natural person.
-			IsLegal bool `json:"is_legal"`
-
-			// Premium subscription
-			IsPremium bool `json:"is_premium"`
-
-			// Payment method
-			PaymentTypeGroupName string `json:"payment_type_group_name"`
-
-			// Delivery region
-			Region string `json:"region"`
-
-			// Warehouse identifier
-			WarehouseId int64 `json:"warehouse_id"`
-
-			// Name of the warehouse from which the order is shipped
-			WarehouseName string `json:"warehouse_name"`
-		} `json:"analytics_data"`
 
 	// Shipment cancellation reason identifier
 	CancelReasonId int64 `json:"cancel_reason_id"`
@@ -118,7 +93,39 @@ type GetFBOShipmentsListResponse struct {
 
 	// Shipment status
 	Status string `json:"status"`
-	} `json:"result"`
+}
+
+type GetFBOShipmentsListResultAdditionalData struct {
+	Key   string `json:"key"`
+	Value string `json:"value"`
+}
+
+type GetFBOShipmentsListResultAnalyticsData struct {
+	// Delivery city
+	City string `json:"city"`
+
+	// Delivery method
+	DeliveryType string `json:"delivery_type"`
+
+	// Indication that the recipient is a legal person
+	//   * true — a legal person,
+	//   * false — a natural person.
+	IsLegal bool `json:"is_legal"`
+
+	// Premium subscription
+	IsPremium bool `json:"is_premium"`
+
+	// Payment method
+	PaymentTypeGroupName string `json:"payment_type_group_name"`
+
+	// Delivery region
+	Region string `json:"region"`
+
+	// Warehouse identifier
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Name of the warehouse from which the order is shipped
+	WarehouseName string `json:"warehouse_name"`
 }
 
 type FBOPostingProduct struct {
@@ -159,12 +166,12 @@ type FBOFinancialData struct {
 }
 
 // Returns a list of shipments for a specified period of time. You can additionally filter the shipments by their status
-func (c FBO) GetShipmentsList(params *GetFBOShipmentsListParams) (*GetFBOShipmentsListResponse, error) {
+func (c FBO) GetShipmentsList(ctx context.Context, params *GetFBOShipmentsListParams) (*GetFBOShipmentsListResponse, error) {
 	url := "/v2/posting/fbo/list"
 
 	resp := &GetFBOShipmentsListResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -196,41 +203,15 @@ type GetShipmentDetailsResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetShipmentDetailsResult `json:"result"`
+}
+
+type GetShipmentDetailsResult struct {
 	// Additional data
-		AdditionalData []struct {
+	AdditionalData []GetShipmentDetailsResultAdditionalData `json:"additional_data"`
-			Key   string `json:"key"`
-			Value string `json:"value"`
-		} `json:"additional_data"`
 
 	// Analytical data
-		AnalyticsData struct {
+	AnalyticsData GetShipmentDetailsResultAnalyticsData `json:"analytics_data"`
-			// Delivery city
-			City string `json:"Delivery city"`
-
-			// Delivery method
-			DeliveryType string `json:"delivery_type"`
-
-			// Indication that the recipient is a legal person:
-			//   - true — a legal person
-			//   - false — a natural person
-			IsLegal bool `json:"is_legal"`
-
-			// Premium subscription
-			IsPremium bool `json:"is_premium"`
-
-			// Payment method
-			PaymentTypeGroupName string `json:"payment_type_group_name"`
-
-			// Delivery region
-			Region string `json:"region"`
-
-			// Warehouse identifier
-			WarehouseId int64 `json:"warehouse_id"`
-
-			// Name of the warehouse from which the order is shipped
-			WarehouseName string `json:"warehouse_name"`
-		} `json:"analytics_data"`
 
 	// Shipment cancellation reason identifier
 	CancelReasonId int64 `json:"cancel_reason_id"`
@@ -258,16 +239,48 @@ type GetShipmentDetailsResponse struct {
 
 	// Shipment status
 	Status string `json:"status"`
-	} `json:"result"`
+}
+
+type GetShipmentDetailsResultAdditionalData struct {
+	Key   string `json:"key"`
+	Value string `json:"value"`
+}
+
+type GetShipmentDetailsResultAnalyticsData struct {
+	// Delivery city
+	City string `json:"Delivery city"`
+
+	// Delivery method
+	DeliveryType string `json:"delivery_type"`
+
+	// Indication that the recipient is a legal person:
+	//   - true — a legal person
+	//   - false — a natural person
+	IsLegal bool `json:"is_legal"`
+
+	// Premium subscription
+	IsPremium bool `json:"is_premium"`
+
+	// Payment method
+	PaymentTypeGroupName string `json:"payment_type_group_name"`
+
+	// Delivery region
+	Region string `json:"region"`
+
+	// Warehouse identifier
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Name of the warehouse from which the order is shipped
+	WarehouseName string `json:"warehouse_name"`
 }
 
 // Returns information about the shipment by its identifier
-func (c FBO) GetShipmentDetails(params *GetShipmentDetailsParams) (*GetShipmentDetailsResponse, error) {
+func (c FBO) GetShipmentDetails(ctx context.Context, params *GetShipmentDetailsParams) (*GetShipmentDetailsResponse, error) {
 	url := "/v2/posting/fbo/get"
 
 	resp := &GetShipmentDetailsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -307,13 +320,7 @@ type SupplyRequestCommonResponse struct {
 	CreatedAt string `json:"created_at"`
 
 	// Local time supply interval
-	LocalTimeslot struct {
+	LocalTimeslot SupplyRequestCommonResponseLocalTimeslot `json:"local_timeslot"`
-		// Interval start
-		From string `json:"from"`
-
-		// Interval end
-		To string `json:"to"`
-	} `json:"local_timeslot"`
 
 	// Date from which you want to bring the supply to the warehouse. Only for supplies via vDC
 	PreferredSupplyDataFrom string `json:"preferred_supply_data_from"`
@@ -331,16 +338,7 @@ type SupplyRequestCommonResponse struct {
 	SupplyOrderNumber string `json:"supply_order_number"`
 
 	// Supply warehouse
-	SupplyWarehouse struct {
+	SupplyWarehouse SupplyRequestCommonResponseSupplyWarehouse `json:"supply_warehouse"`
-		// Warehouse address
-		Address string `json:address"`
-
-		// Warehouse name
-		Name string `json:"name"`
-
-		// Warehouse identifier
-		WarehouseId int64 `json:"warehouse_id"`
-	} `json:"supply_warehouse"`
 
 	// time_left_to_prepare_supply
 	TimeLeftToPrepareSupply int64 `json:"time_left_to_prepare_supply"`
@@ -355,15 +353,34 @@ type SupplyRequestCommonResponse struct {
 	TotalQuantity int32 `json:"total_quantity"`
 }
 
+type SupplyRequestCommonResponseLocalTimeslot struct {
+	// Interval start
+	From string `json:"from"`
+
+	// Interval end
+	To string `json:"to"`
+}
+
+type SupplyRequestCommonResponseSupplyWarehouse struct {
+	// Warehouse address
+	Address string `json:"address"`
+
+	// Warehouse name
+	Name string `json:"name"`
+
+	// Warehouse identifier
+	WarehouseId int64 `json:"warehouse_id"`
+}
+
 // Method for getting a list of supply requests to the Ozon warehouse.
 // Requests with supply both to a specific warehouse and via a virtual
 // distribution center (vDC) are taken into account
-func (c FBO) ListSupplyRequests(params *ListSupplyRequestsParams) (*ListSupplyRequestsResponse, error) {
+func (c FBO) ListSupplyRequests(ctx context.Context, params *ListSupplyRequestsParams) (*ListSupplyRequestsResponse, error) {
 	url := "/v1/supply-order/list"
 
 	resp := &ListSupplyRequestsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -383,7 +400,10 @@ type GetSupplyRequestInfoResponse struct {
 	SupplyRequestCommonResponse
 
 	// Driver and car information
-	VehicleInfo struct {
+	VehicleInfo GetSupplyRequestInfoVehicle `json:"vehicle_info"`
+}
+
+type GetSupplyRequestInfoVehicle struct {
 	// Driver name
 	DriverName string `json:"driver_name"`
 
@@ -395,18 +415,17 @@ type GetSupplyRequestInfoResponse struct {
 
 	// Car number
 	VehicleNumber string `json:"vehicle_number"`
-	} `json:"vehicle_info"`
 }
 
 // Method for getting detailed information on a supply request.
 // Requests with supply both to a specific warehouse and via a
 // virtual distribution center (vDC) are taken into account
-func (c FBO) GetSupplyRequestInfo(params *GetSupplyRequestInfoParams) (*GetSupplyRequestInfoResponse, error) {
+func (c FBO) GetSupplyRequestInfo(ctx context.Context, params *GetSupplyRequestInfoParams) (*GetSupplyRequestInfoResponse, error) {
 	url := "/v1/supply-order/get"
 
 	resp := &GetSupplyRequestInfoResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -435,7 +454,13 @@ type ListProductsInSupplyRequestResponse struct {
 	HasNext bool `json:"has_next"`
 
 	// Products list
-	Items []struct {
+	Items []ListProductsInSupplyRequestItem `json:"items"`
+
+	// Total number of products in the request
+	TotalItemsCount int32 `json:"total_items_count"`
+}
+
+type ListProductsInSupplyRequestItem struct {
 	// Link to product image
 	IconPath string `json:"icon_path"`
 
@@ -450,19 +475,15 @@ type ListProductsInSupplyRequestResponse struct {
 
 	// Product identifier in the Ozon system, SKU
 	SKU int64 `json:"sku"`
-	} `json:"items"`
-
-	// Total number of products in the request
-	TotalItemsCount int32 `json:"total_items_count"`
 }
 
 // List of products in the sullpy request
-func (c FBO) ListProductsInSupplyRequest(params *ListProductsInSupplyRequestParams) (*ListProductsInSupplyRequestResponse, error) {
+func (c FBO) ListProductsInSupplyRequest(ctx context.Context, params *ListProductsInSupplyRequestParams) (*ListProductsInSupplyRequestResponse, error) {
 	url := "/v1/supply-order/items"
 
 	resp := &ListProductsInSupplyRequestResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -475,11 +496,26 @@ type GetWarehouseWorkloadResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []GetWarehouseWorkloadResult `json:"result"`
+}
+
+type GetWarehouseWorkloadResult struct {
 	// Workload
-		Schedule struct {
+	Schedule GetWarehouseWorkloadResultSchedule `json:"schedule"`
+
+	// Warehouse
+	Warehouse GetWarehouseWorkloadResultWarehouse `json:"warehouse"`
+}
+
+type GetWarehouseWorkloadResultSchedule struct {
 	// Data on the products quantity supplied to the warehouse
-			Capacity []struct {
+	Capacity []GetWarehouseWorkloadResultScheduleCapacity `json:"capacity"`
+
+	// The closest available date for supply, local time
+	Date time.Time `json:"date"`
+}
+
+type GetWarehouseWorkloadResultScheduleCapacity struct {
 	// Period start, local time
 	Start time.Time `json:"start"`
 
@@ -488,30 +524,23 @@ type GetWarehouseWorkloadResponse struct {
 
 	// Average number of products that the warehouse can accept per day for the period
 	Value int32 `json:"value"`
-			} `json:"capacity"`
+}
 
-			// The closest available date for supply, local time
+type GetWarehouseWorkloadResultWarehouse struct {
-			Date time.Time `json:"date"`
-		} `json:"schedule"`
-
-		// Warehouse
-		Warehouse struct {
 	// Warehouse identifier
 	Id string `json:"id"`
 
 	// Warehouse name
 	Name string `json:"name"`
-		} `json:"warehouse"`
-	} `json:"result"`
 }
 
 // Method returns a list of active Ozon warehouses with information about their average workload in the nearest future
-func (c FBO) GetWarehouseWorkload() (*GetWarehouseWorkloadResponse, error) {
+func (c FBO) GetWarehouseWorkload(ctx context.Context) (*GetWarehouseWorkloadResponse, error) {
 	url := "/v1/supplier/available_warehouses"
 
 	resp := &GetWarehouseWorkloadResponse{}
 
-	response, err := c.client.Request(http.MethodGet, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodGet, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/fbo_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -43,8 +44,8 @@ func TestGetFBOShipmentsList(t *testing.T) {
 					"posting_number": "16965409-0014-1",
 					"status": "delivered",
 					"cancel_reason_id": 0,
-					"created_at": "2021-09-01T00:23:45.607Z",
+					"created_at": "2021-09-01T00:23:45.607000Z",
-					"in_process_at": "2021-09-01T00:25:30.120Z",
+					"in_process_at": "2021-09-01T00:25:30.120000Z",
 					"products": [
 					  {
 						"sku": 160249683,
@@ -133,7 +134,8 @@ func TestGetFBOShipmentsList(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().GetShipmentsList(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().GetShipmentsList(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -261,7 +263,8 @@ func TestGetShipmentDetails(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().GetShipmentDetails(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().GetShipmentDetails(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -339,7 +342,8 @@ func TestListSupplyRequests(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().ListSupplyRequests(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().ListSupplyRequests(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -414,7 +418,8 @@ func TestGetSupplyRequestInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().GetSupplyRequestInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().GetSupplyRequestInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -472,7 +477,8 @@ func TestListProductsInSupplyRequest(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().ListProductsInSupplyRequest(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().ListProductsInSupplyRequest(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -530,7 +536,8 @@ func TestGetWarehouseWorkload(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBO().GetWarehouseWorkload()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBO().GetWarehouseWorkload(ctx)
 		if err != nil {
 			t.Error(err)
 		}

ozon/fbs_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -167,7 +168,8 @@ func TestListUnprocessedShipments(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ListUnprocessedShipments(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ListUnprocessedShipments(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -278,7 +280,8 @@ func TestGetFBSShipmentsList(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetFBSShipmentsList(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetFBSShipmentsList(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -339,7 +342,8 @@ func TestPackOrder(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().PackOrder(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().PackOrder(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -416,7 +420,8 @@ func TestValidateLabelingCodes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ValidateLabelingCodes(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ValidateLabelingCodes(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -529,7 +534,8 @@ func TestGetShipmentDataByBarcode(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetShipmentDataByBarcode(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetShipmentDataByBarcode(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -642,7 +648,8 @@ func TestGetShipmentDataByIdentifier(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetShipmentDataByIdentifier(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetShipmentDataByIdentifier(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -714,7 +721,8 @@ func TestAddTrackingNumbers(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().AddTrackingNumbers(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().AddTrackingNumbers(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -751,11 +759,11 @@ func TestListOfShipmentCertificates(t *testing.T) {
 			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
 			&ListOfShipmentCertificatesParams{
 				Limit: 100,
-				Filter: ListOfShipmentCertificates{
+				Filter: ListOfShipmentCertificatesFilter{
 					DateFrom:        "2021-08-04",
 					DateTo:          "2022-08-04",
 					IntegrationType: "ozon",
-					Status:          []string{"delivered"},
+					Status:          []ShipmentCertificateFilterStatus{ShitmentCertificateFilterFormed},
 				},
 			},
 			`{
@@ -807,7 +815,8 @@ func TestListOfShipmentCertificates(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ListOfShipmentCertificates(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ListOfShipmentCertificates(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -868,7 +877,8 @@ func TestSignShipmentCertificate(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().SignShipmentCertificate(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().SignShipmentCertificate(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -943,22 +953,26 @@ func TestChangeStatusTo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		deliveringResp, err := c.FBS().ChangeStatusToDelivering(test.params)
+		deliveringctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		deliveringResp, err := c.FBS().ChangeStatusToDelivering(deliveringctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
 
-		lastMileResp, err := c.FBS().ChangeStatusToLastMile(test.params)
+		lastMilectx, _ := context.WithTimeout(context.Background(), testTimeout)
+		lastMileResp, err := c.FBS().ChangeStatusToLastMile(lastMilectx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
 
-		deliveredResp, err := c.FBS().ChangeStatusToDelivered(test.params)
+		deliveredctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		deliveredResp, err := c.FBS().ChangeStatusToDelivered(deliveredctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
 
-		sendBySellerResp, err := c.FBS().ChangeStatusToSendBySeller(test.params)
+		sendBySellerctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		sendBySellerResp, err := c.FBS().ChangeStatusToSendBySeller(sendBySellerctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1005,7 +1019,8 @@ func TestPassShipmentToShipping(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().PassShipmentToShipping(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().PassShipmentToShipping(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1053,7 +1068,8 @@ func TestCancelShipment(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().CancelShipment(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().CancelShipment(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1103,7 +1119,8 @@ func TestCreateAct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().CreateAct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().CreateAct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1132,9 +1149,8 @@ func TestGetLabeling(t *testing.T) {
 			},
 			`{
 				"result": {
-					"error": "24",
+				  "status": "completed",
-					"file_url": "some-url",
+				  "file_url": "https://cdn1.ozone.ru/s3/sc-temporary/e6/0c/e60cdfd7aed78c2b44d134504fbd591d.pdf"
-					"status": "completed"
 				}
 			}`,
 		},
@@ -1153,7 +1169,8 @@ func TestGetLabeling(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetLabeling(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetLabeling(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1186,7 +1203,9 @@ func TestPrintLabeling(t *testing.T) {
 				PostingNumber: []string{"48173252-0034-4"},
 			},
 			`{
-				"content": "https://cdn1.ozone.ru/s3/ozon-disk-api/c4a11c8b748033daf6cdd44aca7ed4c492e55d6f4810f13feae4792afa7934191647255705"
+				"content_type": "application/pdf",
+				"file_name": "ticket-170660-2023-07-13T13:17:06Z.pdf",
+				"file_content": "%PDF-1.7\n%âãÏÓ\n53 0 obj\n<</MarkInfo<</Marked true/Type/MarkInfo>>/Pages 9 0 R/StructTreeRoot 10 0 R/Type/Catalog>>\nendobj\n8 0 obj\n<</Filter/FlateDecode/Length 2888>>\nstream\nxœå[[ݶ\u0011~?¿BÏ\u0005Bs†\u001c^\u0000Àwí5ú\u0010 m\u0016Èsà¦)\n;hÒ\u0014èÏïG‰\u0014)‰<{äµ] ]?¬¬oIÎ}†¤F±‰óϤñï\u001bÕü×X­´OÏï?^~¹$<ø¨È9q\u0013Y\u0012åñì§_¼|ÿ‡égü\t+\u0012\u001bxžª}Æxšҿ¿¼›–‡_º¼xg¦Ÿþ5Oku˜œÌ3ýíògüûå\"Ni\u0016C\u0001°\u000fA9g‰'r¢\"\u0013YóĪ\u0018NÑ{\u001d–ÕóZ¬\\Ô\""
 			}`,
 		},
 		// Test No Client-Id or Api-Key
@@ -1204,7 +1223,8 @@ func TestPrintLabeling(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().PrintLabeling(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().PrintLabeling(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1212,6 +1232,12 @@ func TestPrintLabeling(t *testing.T) {
 		if resp.StatusCode != test.statusCode {
 			t.Errorf("got wrong status code: got: %d, expected: %d", resp.StatusCode, test.statusCode)
 		}
+
+		if resp.StatusCode == http.StatusOK {
+			if resp.Content == "" {
+				t.Error("content cannot be empty")
+			}
+		}
 	}
 }
 
@@ -1252,7 +1278,8 @@ func TestCreateTaskForGeneratingLabel(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().CreateTaskForGeneratingLabel(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().CreateTaskForGeneratingLabel(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1312,7 +1339,8 @@ func TestGetDropOffPointRestrictions(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetDropOffPointRestrictions(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetDropOffPointRestrictions(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1372,7 +1400,8 @@ func TestCheckProductItemsData(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().CheckproductItemsData(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().CheckproductItemsData(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1435,7 +1464,8 @@ func TestGetProductItemsCheckStatuses(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetProductItemsCheckStatuses(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetProductItemsCheckStatuses(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1480,8 +1510,8 @@ func TestRescheduleShipmentDeliveryDate(t *testing.T) {
 			&RescheduleShipmentDeliveryDateParams{
 				PostingNumber: "23281294-0063-2",
 				NewTimeslot: RescheduleShipmentDeliveryDateTimeslot{
-					DeliveryDateBegin: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2023-03-03T11:07:00.381Z"),
+					From: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2023-03-25T08:51:56.932Z"),
-					DeliveryDateEnd:   core.TimeFromString(t, "2006-01-02T15:04:05Z", "2023-03-03T11:07:00.381Z"),
+					To:   core.TimeFromString(t, "2006-01-02T15:04:05Z", "2023-03-25T08:51:56.932Z"),
 				},
 			},
 			`{
@@ -1503,7 +1533,8 @@ func TestRescheduleShipmentDeliveryDate(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().RescheduleShipmentDeliveryDate(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().RescheduleShipmentDeliveryDate(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1554,7 +1585,8 @@ func TestDateAvailableForDeliverySchedule(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().DateAvailableForDeliverySchedule(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().DateAvailableForDeliverySchedule(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1613,7 +1645,8 @@ func TestListManufactoruingCountries(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ListManufacturingCountries(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ListManufacturingCountries(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1673,7 +1706,8 @@ func TestSetManufacturingCountry(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().SetManufacturingCountry(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().SetManufacturingCountry(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1740,7 +1774,8 @@ func TestPartialPackOrder(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().PartialPackOrder(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().PartialPackOrder(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1812,7 +1847,8 @@ func TestAvailableFreightsList(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().AvailableFreightsList(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().AvailableFreightsList(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1859,7 +1895,8 @@ func TestGenerateAct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GenerateAct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GenerateAct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1888,9 +1925,9 @@ func TestGetDigitalAct(t *testing.T) {
 				DocType: "act_of_acceptance",
 			},
 			`{
-				"content": "string",
+				"content_type": "application/pdf",
-				"name": "string",
+				"file_name": "20816409_act_of_mismatch.pdf",
-				"type": "string"
+				"file_content": "%PDF-1.4\n%ÓôÌá\n1 0 obj\n<<\n/Creator(Chromium)\n/Producer(PDFsharp 1.50.5147 \\([www.pdfsharp.com|http://www.pdfsharp.com/]\\) \\(Original: Skia/PDF m103\\))\n/CreationDate(D:20230625092529+00'00')\n/ModDate(D:20230625092529+00'00')\n>>\nendobj\n2 0 obj\n<<\n/Type/Page\n/Resources\n<<\n/ProcSet[/PDF/Text/ImageB/ImageC/ImageI]\n/ExtGState\n<<\n/G3 3 0 R\n/G8 8 0 R\n>>\n/XObject\n<<\n/X6 6 0 R\n/X7 7 0 R\n>>\n/Font\n<<\n/F4 4 0 R\n/F5 5 0 R\n>>\n>>\n/MediaBox[0 0 594.96 841.92]\n/Contents 9 0 R\n/StructParents 0\n/Parent 13 0 R\n/Group\n<<\n/CS/DeviceRGB\n/S/Transparency\n>>\n>>\nendobj\n3 0 obj\n<<\n/ca 1\n/BM/Normal\n>>\nendobj\n4 0 obj\n<<\n/Type/Font\n/Subtype/Type0\n/BaseFont/AAAAAA+LiberationSans\n/Encoding/Identity-H\n/DescendantFonts[160 0 R]\n/ToUnicode 161 0 R\n>>\nendobj\n5 0 obj\n<<\n/Type/Font\n/Subtype/Type0\n/BaseFont/BAAAAA+LiberationSans-Bold\n/Encoding/Identity-H\n/DescendantFonts[164 0"
 			}`,
 		},
 		// Test No Client-Id or Api-Key
@@ -1908,7 +1945,8 @@ func TestGetDigitalAct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().GetDigitalAct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetDigitalAct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1962,7 +2000,8 @@ func TestPackageUnitLabels(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().PackageUnitLabel(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().PackageUnitLabel(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2014,7 +2053,8 @@ func TestOpenDisputeOverShipment(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().OpenDisputeOverShipment(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().OpenDisputeOverShipment(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2081,7 +2121,8 @@ func TestShipmentCancellationReasons(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ShipmentCancellationReasons(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ShipmentCancellationReasons(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2176,7 +2217,8 @@ func TestShipmentsCancellationReasons(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ShipmentsCancellationReasons()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ShipmentsCancellationReasons(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2237,7 +2279,8 @@ func TestAddWeightForBulkProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().AddWeightForBulkProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().AddWeightForBulkProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2297,7 +2340,8 @@ func TestCancelSending(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().CancelSending(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().CancelSending(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2362,7 +2406,8 @@ func TestListShipmentInCertificate(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ListShipmentInCertificate(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ListShipmentInCertificate(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2410,7 +2455,8 @@ func TestSpecifyNumberOfBoxes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().SpecifyNumberOfBoxes(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().SpecifyNumberOfBoxes(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2458,7 +2504,8 @@ func TestStatusOfAct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().StatusOfAct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().StatusOfAct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2516,7 +2563,8 @@ func TestETGBCustomsDeclarations(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.FBS().ETGBCustomsDeclarations(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().ETGBCustomsDeclarations(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2526,3 +2574,172 @@ func TestETGBCustomsDeclarations(t *testing.T) {
 		}
 	}
 }
+
+func TestBarcodeFromProductShipment(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		statusCode int
+		headers    map[string]string
+		params     *BarcodeFromProductShipmentParams
+		response   string
+	}{
+		// Test Ok
+		{
+			http.StatusOK,
+			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
+			&BarcodeFromProductShipmentParams{
+				Id: 295662811,
+			},
+			`{
+				"content_type": "image/png",
+				"file_name": "20913984_barcode.png",
+				"file_content": "‰PNG\r\n\u001a\n\u0000\u0000\u0000\rIHDR\u0000\u0000\u0003\u0010\u0000\u0000\u0000\u0010\u0000\u0000\u0000\u0000íZ\u000e'\u0000\u0000\u0002pIDATxœìÕÁJ\u00031\u0014@Q+þÿ/×E\u0017\u000e¼›\u0010u¡-ç¬$£Éˌp?î÷·§t» }ýü¸ÃcåzŸ¹2w˜OWû\\Ϛ뫧×Ùö;œì|rÇýßîç¼úî{˜§¬N?™í7oì•v¸®Ÿµ¹Ãù„û•¹¾ÿÏ9ÿî?›až¸ºéê7O&߿É9çÉ\u000eÏáý¯\u0007\u0000à\u0012\b\u0000’@\u0000\u0004\u0002€$\u0010\u0000$\u0000 \t\u0004\u0000I \u0000H\u0002\u0001@\u0012\b\u0000’@\u0000\u0004\u0002€$\u0010\u0000$\u0000 \t\u0004\u0000I \u0000H\u0002\u0001@\u0012\b\u0000’@\u0000\u0004\u0002€$\u0010\u0000$\u0000 \t\u0004\u0000I \u0000H\u0002\u0001@\u0012\b\u0000’@\u0000\u0004\u0002€$\u0010\u0000$\u0000 \t\u0004\u0000I \u0000H\u0002\u0001@\u0012\b\u0000’@\u0000\u0004\u0002€$\u0010\u0000"
+			}`,
+		},
+		// Test No Client-Id or Api-Key
+		{
+			http.StatusUnauthorized,
+			map[string]string{},
+			&BarcodeFromProductShipmentParams{},
+			`{
+				"code": 16,
+				"message": "Client-Id and Api-Key headers are required"
+			}`,
+		},
+	}
+
+	for _, test := range tests {
+		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
+
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().BarcodeFromProductShipment(ctx, test.params)
+		if err != nil {
+			t.Error(err)
+		}
+
+		if resp.StatusCode != test.statusCode {
+			t.Errorf("got wrong status code: got: %d, expected: %d", resp.StatusCode, test.statusCode)
+		}
+
+		if resp.StatusCode == http.StatusOK {
+			if resp.Content == "" {
+				t.Errorf("content cannot be empty")
+			}
+			if resp.Type == "" {
+				t.Error("type cannot be empty")
+			}
+			if resp.Name == "" {
+				t.Error("name cannot be empty")
+			}
+		}
+	}
+}
+
+func TestBarcodeValueFromProductShipment(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		statusCode int
+		headers    map[string]string
+		params     *BarcodeValueFromProductShipmentParams
+		response   string
+	}{
+		// Test Ok
+		{
+			http.StatusOK,
+			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
+			&BarcodeValueFromProductShipmentParams{
+				Id: 295662811,
+			},
+			`{
+				"result": "%303%24276481394"
+			}`,
+		},
+		// Test No Client-Id or Api-Key
+		{
+			http.StatusUnauthorized,
+			map[string]string{},
+			&BarcodeValueFromProductShipmentParams{},
+			`{
+				"code": 16,
+				"message": "Client-Id and Api-Key headers are required"
+			}`,
+		},
+	}
+
+	for _, test := range tests {
+		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
+
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().BarcodeValueFromProductShipment(ctx, test.params)
+		if err != nil {
+			t.Error(err)
+		}
+
+		if resp.StatusCode != test.statusCode {
+			t.Errorf("got wrong status code: got: %d, expected: %d", resp.StatusCode, test.statusCode)
+		}
+
+		if resp.StatusCode == http.StatusOK {
+			if resp.Result == "" {
+				t.Errorf("result cannot be empty")
+			}
+		}
+	}
+}
+
+func TestGetActPDF(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		statusCode int
+		headers    map[string]string
+		params     *GetActPDFParams
+		response   string
+	}{
+		// Test Ok
+		{
+			http.StatusOK,
+			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
+			&GetActPDFParams{
+				Id: 22435521842000,
+			},
+			`{
+				"content_type": "application/pdf",
+				"file_name": "20928233.pdf",
+				"file_content": "binarystring"
+			}`,
+		},
+		// Test No Client-Id or Api-Key
+		{
+			http.StatusUnauthorized,
+			map[string]string{},
+			&GetActPDFParams{},
+			`{
+				"code": 16,
+				"message": "Client-Id and Api-Key headers are required"
+			}`,
+		},
+	}
+
+	for _, test := range tests {
+		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
+
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.FBS().GetActPDF(ctx, test.params)
+		if err != nil {
+			t.Error(err)
+		}
+
+		if resp.StatusCode != test.statusCode {
+			t.Errorf("got wrong status code: got: %d, expected: %d", resp.StatusCode, test.statusCode)
+		}
+
+		if resp.StatusCode == http.StatusOK {
+			if resp.FileContent == "" {
+				t.Errorf("result cannot be empty")
+			}
+		}
+	}
+}

ozon/finance.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -20,9 +21,18 @@ type ReportOnSoldProductsResponse struct {
 	core.CommonResponse
 
 	// Query result
-	Result []struct {
+	Result []ReportonSoldProductsResult `json:"result"`
+}
+
+type ReportonSoldProductsResult struct {
 	// Report title page
-		Header []struct {
+	Header []ReportOnSoldProductsResultHeader `json:"header"`
+
+	// Report table
+	Rows []ReportOnSoldProductsResultRow `json:"rows"`
+}
+
+type ReportOnSoldProductsResultHeader struct {
 	// Report ID
 	Id string `json:"num"`
 
@@ -67,10 +77,9 @@ type ReportOnSoldProductsResponse struct {
 
 	// Period end in the report
 	StopDate string `json:"stop_date"`
-		} `json:"header"`
+}
 
-		// Report table
+type ReportOnSoldProductsResultRow struct {
-		Rows []struct {
 	// Row number
 	RowNumber int32 `json:"row_number"`
 
@@ -138,19 +147,17 @@ type ReportOnSoldProductsResponse struct {
 
 	// Quantity of returned products
 	ReturnQuantity int32 `json:"return_qty"`
-		} `json:"rows"`
-	} `json:"result"`
 }
 
 // Returns information on products sold and returned within a month. Canceled or non-purchased products are not included.
 //
 // Report is returned no later than the 5th day of the next month
-func (c Finance) ReportOnSoldProducts(params *ReportOnSoldProductsParams) (*ReportOnSoldProductsResponse, error) {
+func (c Finance) ReportOnSoldProducts(ctx context.Context, params *ReportOnSoldProductsParams) (*ReportOnSoldProductsResponse, error) {
 	url := "/v1/finance/realization"
 
 	resp := &ReportOnSoldProductsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -196,7 +203,10 @@ type GetTotalTransactionsSumResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetTotalTransactionsSumResult `json:"result"`
+}
+
+type GetTotalTransactionsSumResult struct {
 	// Total cost of products and returns for specified period
 	AccrualsForSale float64 `json:"accruals_for_sale"`
 
@@ -229,16 +239,15 @@ type GetTotalTransactionsSumResponse struct {
 	// The additional services cost that are not directly related to deliveries and returns.
 	// For example, promotion or product placement
 	ServicesAmount float64 `json:"services_amount"`
-	} `json:"result"`
 }
 
 // Returns total sums for transactions for specified period
-func (c Finance) GetTotalTransactionsSum(params *GetTotalTransactionsSumParams) (*GetTotalTransactionsSumResponse, error) {
+func (c Finance) GetTotalTransactionsSum(ctx context.Context, params *GetTotalTransactionsSumParams) (*GetTotalTransactionsSumResponse, error) {
 	url := "/v3/finance/transaction/totals"
 
 	resp := &GetTotalTransactionsSumResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -290,9 +299,21 @@ type ListTransactionsResponse struct{
 	core.CommonResponse
 
 	// Method result
-	Result struct{
+	Result ListTransactionsResult `json:"result"`
+}
+
+type ListTransactionsResult struct {
 	// Transactions infromation
-		Operations []struct{
+	Operations []ListTransactionsResultOperation `json:"operations"`
+
+	// Number of pages
+	PageCount int64 `json:"page_count"`
+
+	// Number of products
+	RowCount int64 `json:"row_count"`
+}
+
+type ListTransactionsResultOperation struct {
 	// Cost of the products with seller's discounts applied
 	AccrualsForSale float64 `json:"accruals_for_sale"`
 
@@ -303,13 +324,7 @@ type ListTransactionsResponse struct{
 	DeliveryCharge float64 `json:"delivery_charge"`
 
 	// Product information
-			Items []struct{
+	Items []ListTransactionsResultOperationItem `json:"items"`
-				// Product name
-				Name string `json:"name"`
-
-				// Product identifier in the Ozon system, SKU
-				SKU int64 `json:"sku"`
-			} `json:"items"`
 
 	// Operation date
 	OperationDate string `json:"operation_date"`
@@ -324,7 +339,30 @@ type ListTransactionsResponse struct{
 	OperationTypeName string `json:"operation_type_name"`
 
 	// Shipment information
-			Posting struct{
+	Posting ListTransactionsResultOperationPosting `json:"posting"`
+
+	// Returns and cancellation cost for charges by rates that were in effect until February 1, 2021, and for charges for bulky products
+	ReturnDeliveryCharge float64 `json:"return_delivery_charge"`
+
+	// Sales commission or sales commission refund
+	SaleCommission float64 `json:"sale_commission"`
+
+	// Additional services
+	Services []ListTransactionsResultOperationService `json:"services"`
+
+	// Transaction type
+	Type string `json:"type"`
+}
+
+type ListTransactionsResultOperationItem struct {
+	// Product name
+	Name string `json:"name"`
+
+	// Product identifier in the Ozon system, SKU
+	SKU int64 `json:"sku"`
+}
+
+type ListTransactionsResultOperationPosting struct {
 	// Delivery scheme:
 	//   - FBO — delivery to Ozon warehouse
 	//   - FBS — delivery from seller's warehouse
@@ -340,44 +378,25 @@ type ListTransactionsResponse struct{
 
 	// Warehouse identifier
 	WarehouseId int64 `json:"warehouse_id"`
-			} `json:"posting"`
+}
 
-			// Returns and cancellation cost for charges by rates that were in effect until February 1, 2021, and for charges for bulky products
+type ListTransactionsResultOperationService struct {
-			ReturnDeliveryCharge float64 `json:"return_delivery_charge"`
-
-			// Sales commission or sales commission refund
-			SaleCommission float64 `json:"sale_commission"`
-
-			// Additional services
-			Services []struct{
 	// Service name
 	Name string `json:"name"`
 
 	// Price
 	Price float64 `json:"price"`
-			} `json:"services"`
-
-			// Transaction type
-			Type string `json:"type"`
-		} `json:"operations"`
-
-		// Number of pages
-		PageCount int64 `json:"page_count"`
-
-		// Number of products
-		RowCount int64 `json:"row_count"`
-	} `json:"result"`
 }
 
 // Returns detailed information on all accruals. The maximum period for which you can get information in one request is 1 month.
 //
 // If you don't specify the posting_number in request, the response contains all shipments for the specified period or shipments of a certain type
-func (c Finance) ListTransactions(params *ListTransactionsParams) (*ListTransactionsResponse, error) {
+func (c Finance) ListTransactions(ctx context.Context, params *ListTransactionsParams) (*ListTransactionsResponse, error) {
 	url := "/v3/finance/transaction/list"
 
 	resp := &ListTransactionsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/finance_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -90,7 +91,8 @@ func TestReportOnSoldProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Finance().ReportOnSoldProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Finance().ReportOnSoldProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -158,7 +160,8 @@ func TestGetTotalTransactionsSum(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Finance().GetTotalTransactionsSum(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Finance().GetTotalTransactionsSum(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -246,7 +249,8 @@ func TestListTransactions(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Finance().ListTransactions(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Finance().ListTransactions(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/invoices.go

@@ -1,7 +1,9 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
+	"time"
 
 	core "github.com/diphantxm/ozon-api-client"
 )
@@ -16,6 +18,21 @@ type CreateUpdateProformaLinkParams struct {
 
 	// Proforma invoice link
 	URL string `json:"url"`
+
+	// Invoice HS-code. Pass a number up to 12 characters long
+	HSCode string `json:"hs_code"`
+
+	// Invoice date
+	Date time.Time `json:"date"`
+
+	// Invoice number. The number can contain letters and digits, maximum length is 50 characters
+	Number string `json:"number"`
+
+	// Cost stated in the invoice. The fractional part is separated by decimal point, up to two digits after the decimal poin
+	Price float64 `json:"price"`
+
+	// Invoice currency
+	PriceCurrency InvoiceCurrency `json:"price_currency" default:"USD"`
 }
 
 type CreateUpdateProformaLinkResponse struct {
@@ -26,12 +43,12 @@ type CreateUpdateProformaLinkResponse struct {
 }
 
 // Create or edit proforma invoice link for VAT refund to Turkey sellers
-func (c Invoices) CreateUpdate(params *CreateUpdateProformaLinkParams) (*CreateUpdateProformaLinkResponse, error) {
+func (c Invoices) CreateUpdate(ctx context.Context, params *CreateUpdateProformaLinkParams) (*CreateUpdateProformaLinkResponse, error) {
 	url := "/v1/invoice/create-or-update"
 
 	resp := &CreateUpdateProformaLinkResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -49,19 +66,21 @@ type GetProformaLinkResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetProformaLinkResult `json:"result"`
+}
+
+type GetProformaLinkResult struct {
 	// Proforma invoice link
 	FileURL string `json:"file_url"`
-	} `json:"result"`
 }
 
 // Get a proforma invoice link
-func (c Invoices) Get(params *GetProformaLinkParams) (*GetProformaLinkResponse, error) {
+func (c Invoices) Get(ctx context.Context, params *GetProformaLinkParams) (*GetProformaLinkResponse, error) {
 	url := "/v1/invoice/get"
 
 	resp := &GetProformaLinkResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -82,12 +101,12 @@ type DeleteProformaLinkResponse struct {
 	Result bool `json:"result"`
 }
 
-func (c Invoices) Delete(params *DeleteProformaLinkParams) (*DeleteProformaLinkResponse, error) {
+func (c Invoices) Delete(ctx context.Context, params *DeleteProformaLinkParams) (*DeleteProformaLinkResponse, error) {
 	url := "/v1/invoice/delete"
 
 	resp := &DeleteProformaLinkResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/invoices_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -21,8 +22,13 @@ func TestCreateUpdateProformaLink(t *testing.T) {
 			http.StatusOK,
 			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
 			&CreateUpdateProformaLinkParams{
-				PostingNumber: "posting number",
+				PostingNumber: "33920146-0252-1",
-				URL:           "link",
+				URL:           "https://cdn.ozone.ru/s3/ozon-disk-api/techdoc/seller-api/earsivfatura_1690960445.pdf",
+				HSCode:        "2134322",
+				Date:          core.TimeFromString(t, "2006-01-02T15:04:05Z", "2023-08-01T12:08:44.342Z"),
+				Number:        "424fdsf234",
+				Price:         234.34,
+				PriceCurrency: InvoiceCurrencyRUB,
 			},
 			`{
 				"result": true
@@ -43,7 +49,8 @@ func TestCreateUpdateProformaLink(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Invoices().CreateUpdate(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Invoices().CreateUpdate(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -91,7 +98,8 @@ func TestGetProformaLink(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Invoices().Get(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Invoices().Get(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -137,7 +145,8 @@ func TestDeleteProformaLink(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Invoices().Delete(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Invoices().Delete(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/notifications/enums.go

@@ -0,0 +1,19 @@
+package notifications
+
+type MessageType string
+
+const (
+	PingType                MessageType = "TYPE_PING"
+	NewPostingType          MessageType = "TYPE_NEW_POSTING"
+	PostingCancelledType    MessageType = "TYPE_POSTING_CANCELLED"
+	StateChangedType        MessageType = "TYPE_STATE_CHANGED"
+	CutoffDateChangedType   MessageType = "TYPE_CUTOFF_DATE_CHANGED"
+	DeliveryDateChangedType MessageType = "TYPE_DELIVERY_DATE_CHANGED"
+	CreateOrUpdateType      MessageType = "TYPE_CREATE_OR_UPDATE_ITEM"
+	PriceIndexChangedType   MessageType = "TYPE_PRICE_INDEX_CHANGED"
+	StocksChangedType       MessageType = "TYPE_STOCKS_CHANGED"
+	NewMessageType          MessageType = "TYPE_NEW_MESSAGE"
+	UpdateMessageType       MessageType = "TYPE_UPDATE_MESSAGE"
+	MessageReadType         MessageType = "TYPE_MESSAGE_READ"
+	ChatClosedType          MessageType = "TYPE_CHAT_CLOSED"
+)

ozon/notifications/server.go

@@ -0,0 +1,158 @@
+package notifications
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"time"
+)
+
+type Handler func(req interface{}) error
+
+type NotificationServer struct {
+	port     int
+	handlers map[MessageType]Handler
+}
+
+func NewNotificationServer(port int) *NotificationServer {
+	return &NotificationServer{
+		port:     port,
+		handlers: map[MessageType]Handler{},
+	}
+}
+
+func (ns *NotificationServer) Run() error {
+	mux := http.NewServeMux()
+	mux.HandleFunc("/", ns.handler)
+	server := http.Server{
+		Addr:    fmt.Sprintf("0.0.0.0:%d", ns.port),
+		Handler: mux,
+	}
+	return server.ListenAndServe()
+}
+
+func (ns *NotificationServer) handler(rw http.ResponseWriter, httpReq *http.Request) {
+	mt := &Common{}
+	content, err := ioutil.ReadAll(httpReq.Body)
+	if err != nil {
+		log.Print(err)
+		ns.error(rw, http.StatusBadRequest, err)
+		return
+	}
+	if err := json.Unmarshal(content, mt); err != nil {
+		log.Print(err)
+		ns.error(rw, http.StatusBadRequest, err)
+		return
+	}
+
+	if mt.MessageType == PingType {
+		resp := pingResponse{
+			Version: "1.0",
+			Name:    "Ozon Seller API",
+			Time:    time.Now(),
+		}
+		respJson, _ := json.Marshal(resp)
+
+		rw.WriteHeader(http.StatusOK)
+		rw.Write(respJson)
+		return
+	}
+
+	req, err := ns.unmarshal(mt.MessageType, content)
+	if err != nil {
+		log.Print(err)
+		ns.error(rw, http.StatusInternalServerError, err)
+		return
+	}
+	h, ok := ns.handlers[mt.MessageType]
+	if !ok {
+		ns.result(rw, true)
+		log.Printf("handler for %s is not registered", mt.MessageType)
+		return
+	}
+	if err := h(req); err != nil {
+		log.Print(err)
+		ns.result(rw, true)
+		return
+	}
+
+	ns.result(rw, true)
+}
+
+func (ns *NotificationServer) Register(mt MessageType, handler func(req interface{}) error) {
+	ns.handlers[mt] = handler
+}
+
+func (ns *NotificationServer) unmarshal(messageType MessageType, content []byte) (interface{}, error) {
+	switch messageType {
+	case NewPostingType:
+		v := &NewPosting{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case PostingCancelledType:
+		v := &PostingCancelled{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case StateChangedType:
+		v := &StateChanged{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case CutoffDateChangedType:
+		v := &CutoffDateChanged{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case DeliveryDateChangedType:
+		v := &DeliveryDateChanged{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case CreateOrUpdateType:
+		v := &CreateOrUpdateItem{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case PriceIndexChangedType:
+		v := &PriceIndexChanged{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case StocksChangedType:
+		v := &StocksChanged{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case NewMessageType:
+		v := &NewMessage{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case UpdateMessageType:
+		v := &UpdateMessage{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case MessageReadType:
+		v := &MessageRead{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	case ChatClosedType:
+		v := &ChatClosed{}
+		err := json.Unmarshal(content, v)
+		return v, err
+	default:
+		return nil, fmt.Errorf("unsupported type: %s", messageType)
+	}
+}
+
+func (ns *NotificationServer) error(rw http.ResponseWriter, statusCode int, err error) {
+	errResp := errorResponse{
+		Data: errorData{
+			Code:    fmt.Sprintf("%d", statusCode),
+			Message: err.Error(),
+		},
+	}
+	errJson, _ := json.Marshal(errResp)
+	rw.WriteHeader(statusCode)
+	rw.Write(errJson)
+}
+
+func (ns *NotificationServer) result(rw http.ResponseWriter, res bool) {
+	rw.WriteHeader(http.StatusOK)
+	rw.Write([]byte(fmt.Sprintf(`{"result": %t}`, res)))
+}

ozon/notifications/server_test.go

@@ -0,0 +1,682 @@
+package notifications
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"reflect"
+	"strings"
+	"testing"
+	"time"
+
+	core "github.com/diphantxm/ozon-api-client"
+)
+
+type testData struct {
+	raw    string
+	object interface{}
+}
+
+func pingTest(t *testing.T) testData {
+	return testData{
+		object: &pingRequest{
+			Common: Common{MessageType: PingType},
+			Time:   core.TimeFromString(t, "2006-01-02T15:04:05Z", "2019-08-24T14:15:22Z"),
+		},
+		raw: `{
+			"message_type": "TYPE_PING",
+			"time": "2019-08-24T14:15:22Z"
+		}`,
+	}
+}
+
+func newPostingTest(t *testing.T) testData {
+	return testData{
+		object: &NewPosting{
+			Common:        Common{MessageType: NewPostingType},
+			PostingNumber: "24219509-0020-1",
+			Products: []Product{
+				{
+					SKU:      147451959,
+					Quantity: 2,
+				},
+			},
+			InProccessAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-01-26T06:56:36.294Z"),
+			WarehouseId:  18850503335000,
+			SellerId:     15,
+		},
+		raw: `{
+			"message_type": "TYPE_NEW_POSTING",
+			"posting_number": "24219509-0020-1",
+			"products": [
+			  {
+				"sku": 147451959,
+				"quantity": 2
+			  }
+			],
+			"in_process_at": "2021-01-26T06:56:36.294Z",
+			"warehouse_id": 18850503335000,
+			"seller_id": 15
+		}`,
+	}
+}
+
+func postingCancelledTest(t *testing.T) testData {
+	return testData{
+		object: &PostingCancelled{
+			Common:        Common{MessageType: PostingCancelledType},
+			PostingNumber: "24219509-0020-1",
+			Products: []Product{
+				{
+					SKU:      147451959,
+					Quantity: 1,
+				},
+			},
+			OldState:         "posting_transferred_to_courier_service",
+			NewState:         "posting_canceled",
+			ChangedStateDate: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-01-26T06:56:36.294Z"),
+			Reason:           Reason{Id: 1, Message: "message"},
+			WarehouseId:      1,
+			SellerId:         15,
+		},
+		raw: `{
+			"message_type": "TYPE_POSTING_CANCELLED",
+			"posting_number": "24219509-0020-1",
+			"products": [
+			  {
+				"sku": 147451959,
+				"quantity": 1
+			  }
+			],
+			"old_state": "posting_transferred_to_courier_service",
+			"new_state": "posting_canceled",
+			"changed_state_date": "2021-01-26T06:56:36.294Z",
+			"reason": {
+			  "id": 1,
+			  "message": "message"
+			},
+			"warehouse_id": 1,
+			"seller_id": 15
+		}`,
+	}
+}
+
+func cutoffDateChangedTest(t *testing.T) testData {
+	return testData{
+		object: &CutoffDateChanged{
+			Common:        Common{MessageType: CutoffDateChangedType},
+			PostingNumber: "24219509-0020-2",
+			NewCutoffDate: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-24T07:00:00Z"),
+			OldCutoffDate: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-21T10:00:00Z"),
+			WarehouseId:   1,
+			SellerId:      15,
+		},
+		raw: `{
+			"message_type": "TYPE_CUTOFF_DATE_CHANGED",
+			"posting_number": "24219509-0020-2",
+			"new_cutoff_date": "2021-11-24T07:00:00Z",
+			"old_cutoff_date": "2021-11-21T10:00:00Z",
+			"warehouse_id": 1,
+			"seller_id": 15
+		}`,
+	}
+}
+
+func deliveryDateChangedTest(t *testing.T) testData {
+	return testData{
+		object: &DeliveryDateChanged{
+			Common:               Common{MessageType: DeliveryDateChangedType},
+			PostingNumber:        "24219509-0020-2",
+			NewDeliveryDateBegin: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-24T07:00:00Z"),
+			NewDeliveryDateEnd:   core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-24T16:00:00Z"),
+			OldDeliveryDateBegin: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-21T10:00:00Z"),
+			OldDeliveryDateEnd:   core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-11-21T19:00:00Z"),
+			WarehouseId:          1,
+			SellerId:             15,
+		},
+		raw: `{
+			"message_type": "TYPE_DELIVERY_DATE_CHANGED",
+			"posting_number": "24219509-0020-2",
+			"new_delivery_date_begin": "2021-11-24T07:00:00Z",
+			"new_delivery_date_end": "2021-11-24T16:00:00Z",
+			"old_delivery_date_begin": "2021-11-21T10:00:00Z",
+			"old_delivery_date_end": "2021-11-21T19:00:00Z",
+			"warehouse_id": 1,
+			"seller_id": 15
+		}`,
+	}
+}
+
+func priceIndexChangedTest(t *testing.T) testData {
+	return testData{
+		object: &PriceIndexChanged{
+			Common:     Common{MessageType: PriceIndexChangedType},
+			UpdatedAt:  core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-06-21T05:52:46.648533678Z"),
+			SKU:        147451959,
+			ProductId:  1234,
+			PriceIndex: 5678,
+			SellerId:   15,
+		},
+		raw: `{
+			"seller_id": 15,
+			"message_type": "TYPE_PRICE_INDEX_CHANGED",
+			"updated_at":"2022-06-21T05:52:46.648533678Z",
+			"sku": 147451959,
+			"product_id": 1234,
+			"price_index": 5678
+		}`,
+	}
+}
+
+func stocksChangedTest(t *testing.T) testData {
+	return testData{
+		object: &StocksChanged{
+			Common: Common{MessageType: StocksChangedType},
+			Items: []Item{
+				{
+					UpdatedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-09-01T14:15:22Z"),
+					SKU:       5678,
+					ProductId: 1234,
+					Stocks: []Stock{
+						{
+							WarehouseId: 10,
+							Present:     50,
+							Reserved:    5,
+						},
+					},
+				},
+			},
+			SellerId: 15,
+		},
+		raw: `{
+			"message_type": "TYPE_STOCKS_CHANGED",
+			"seller_id": 15,
+			"items": [
+			  {
+				"product_id": 1234,
+				"sku": 5678,
+				"updated_at": "2021-09-01T14:15:22Z",
+				"stocks": [
+				  {
+					"warehouse_id": 10,
+					"present": 50,
+					"reserved": 5
+				  }
+				]
+			  }
+			]
+		}`,
+	}
+}
+
+func newMessageTest(t *testing.T) testData {
+	return testData{
+		object: &NewMessage{
+			Common:    Common{MessageType: NewMessageType},
+			ChatId:    "b646d975-0c9c-4872-9f41-8b1e57181063",
+			ChatType:  "Buyer_Seller",
+			MessageId: "3000000000817031942",
+			CreatedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-07-18T20:58:04.528Z"),
+			User:      User{Id: "115568", Type: "Customer"},
+			Data:      []string{"Message text"},
+			SellerId:  7,
+		},
+		raw: `{  
+			"message_type": "TYPE_NEW_MESSAGE",
+			"chat_id": "b646d975-0c9c-4872-9f41-8b1e57181063",
+			"chat_type": "Buyer_Seller",
+			"message_id": "3000000000817031942",
+			"created_at": "2022-07-18T20:58:04.528Z",
+			"user": {
+				"id": "115568",
+				"type": "Customer"
+			},
+			"data": [
+				"Message text"
+			],  
+			"seller_id": 7
+		}`,
+	}
+}
+
+func updateMessageTest(t *testing.T) testData {
+	return testData{
+		object: &UpdateMessage{
+			NewMessage: NewMessage{
+				Common:    Common{MessageType: UpdateMessageType},
+				ChatId:    "b646d975-0c9c-4872-9f41-8b1e57181063",
+				ChatType:  "Buyer_Seller",
+				MessageId: "3000000000817031942",
+				CreatedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-07-18T20:58:04.528Z"),
+				User: User{
+					Id:   "115568",
+					Type: "Сustomer",
+				},
+				Data:     []string{"Message text"},
+				SellerId: 7,
+			},
+			UpdatedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-07-18T20:59:04.528Z"),
+		},
+		raw: `{  
+			"message_type": "TYPE_UPDATE_MESSAGE",
+			"chat_id": "b646d975-0c9c-4872-9f41-8b1e57181063",
+			"chat_type": "Buyer_Seller",
+			"message_id": "3000000000817031942",
+			"created_at": "2022-07-18T20:58:04.528Z",
+			"updated_at": "2022-07-18T20:59:04.528Z",
+			"user": {
+				"id": "115568",
+				"type": "Сustomer"
+			},
+			"data": [
+				"Message text"
+			], 
+			"seller_id": 7
+		}`,
+	}
+}
+
+func createUpdateItemTest(t *testing.T) testData {
+	return testData{
+		object: &CreateOrUpdateItem{
+			Common:    Common{MessageType: "TYPE_CREATE_OR_UPDATE_ITEM"},
+			OfferId:   "1234",
+			ProductId: 5678,
+			IsError:   false,
+			ChangedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-09-01T14:15:22Z"),
+			SellerId:  15,
+		},
+		raw: `{
+			"message_type": "TYPE_CREATE_OR_UPDATE_ITEM",
+			"seller_id": 15,
+			"offer_id": "1234",
+			"product_id": 5678,
+			"is_error": false,
+			"changed_at": "2022-09-01T14:15:22Z"
+		}`,
+	}
+}
+
+func stateChangedTest(t *testing.T) testData {
+	return testData{
+		object: &StateChanged{
+			Common:           Common{MessageType: "TYPE_STATE_CHANGED"},
+			PostingNumber:    "24219509-0020-2",
+			NewState:         "posting_delivered",
+			ChangedStateDate: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2021-02-02T15:07:46.765Z"),
+			WarehouseId:      1,
+			SellerId:         15,
+		},
+		raw: `{
+			"message_type": "TYPE_STATE_CHANGED",
+			"posting_number": "24219509-0020-2",
+			"new_state": "posting_delivered",
+			"changed_state_date": "2021-02-02T15:07:46.765Z",
+			"warehouse_id": 1,
+			"seller_id": 15
+		}`,
+	}
+}
+
+func messageReadTest(t *testing.T) testData {
+	return testData{
+		object: &MessageRead{
+			LastReadMessageId: "3000000000817031942",
+			NewMessage: NewMessage{
+				Common:    Common{MessageType: "TYPE_MESSAGE_READ"},
+				ChatId:    "b646d975-0c9c-4872-9f41-8b1e57181063",
+				ChatType:  "Buyer_Seller",
+				MessageId: "3000000000817031942",
+				CreatedAt: core.TimeFromString(t, "2006-01-02T15:04:05Z", "2022-07-18T20:58:04.528Z"),
+				User: User{
+					Id:   "115568",
+					Type: "Сustomer",
+				},
+				SellerId: 7,
+			},
+		},
+		raw: `{  
+			"message_type": "TYPE_MESSAGE_READ",
+			"chat_id": "b646d975-0c9c-4872-9f41-8b1e57181063",
+			"chat_type": "Buyer_Seller",
+			"message_id": "3000000000817031942",
+			"created_at": "2022-07-18T20:58:04.528Z",    
+			"user": {
+				"id": "115568",
+				"type": "Сustomer"
+			},
+			"last_read_message_id": "3000000000817031942",
+			"seller_id": 7
+		}`,
+	}
+}
+
+func chatClosedTest(t *testing.T) testData {
+	return testData{
+		object: &ChatClosed{
+			Common:   Common{MessageType: ChatClosedType},
+			ChatId:   "b646d975-0c9c-4872-9f41-8b1e57181063",
+			ChatType: "Buyer_Seller",
+			User:     User{Id: "115568", Type: "Customer"},
+			SellerId: 7,
+		},
+		raw: `{  
+			"message_type": "TYPE_CHAT_CLOSED",
+			"chat_id": "b646d975-0c9c-4872-9f41-8b1e57181063",
+			"chat_type": "Buyer_Seller",
+			"user": {
+				"id": "115568",
+				"type": "Customer"
+			},
+			"seller_id": 7
+		}`,
+	}
+}
+
+func TestNotificationServer(t *testing.T) {
+	testCases := []struct {
+		request  testData
+		response string
+	}{
+		{
+			pingTest(t),
+			`{
+				"version": "1.0",
+				"name": "Ozon Seller API"
+			}`,
+		},
+		{
+			newPostingTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			postingCancelledTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			stateChangedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			cutoffDateChangedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			deliveryDateChangedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			createUpdateItemTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			priceIndexChangedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			stocksChangedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			newMessageTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			updateMessageTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			messageReadTest(t),
+			`{
+				"result": true
+			}`,
+		},
+		{
+			chatClosedTest(t),
+			`{
+				"result": true
+			}`,
+		},
+	}
+
+	port := getFreePort()
+
+	client := http.Client{}
+	server := NewNotificationServer(port)
+	server.Register(NewPostingType, comparatorWith(newPostingTest(t).object))
+	server.Register(PostingCancelledType, comparatorWith(postingCancelledTest(t).object))
+	server.Register(StateChangedType, comparatorWith(stateChangedTest(t).object))
+	server.Register(CutoffDateChangedType, comparatorWith(cutoffDateChangedTest(t).object))
+	server.Register(DeliveryDateChangedType, comparatorWith(deliveryDateChangedTest(t).object))
+	server.Register(CreateOrUpdateType, comparatorWith(createUpdateItemTest(t).object))
+	server.Register(PriceIndexChangedType, comparatorWith(priceIndexChangedTest(t).object))
+	server.Register(StocksChangedType, comparatorWith(stocksChangedTest(t).object))
+	server.Register(NewMessageType, comparatorWith(newMessageTest(t).object))
+	server.Register(UpdateMessageType, comparatorWith(updateMessageTest(t).object))
+	server.Register(MessageReadType, comparatorWith(messageReadTest(t).object))
+	server.Register(ChatClosedType, comparatorWith(chatClosedTest(t).object))
+	go func() {
+		if err := server.Run(); err != nil {
+			t.Fatalf("notification server is down: %s", err)
+		}
+	}()
+
+	// TODO: get rid of it
+	// Needed to make sure server is running
+	time.Sleep(3 * time.Second)
+
+	for _, testCase := range testCases {
+		httpResp, err := client.Post(fmt.Sprintf("http://0.0.0.0:%d/", port), "application/json", strings.NewReader(testCase.request.raw))
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		gotJson, err := ioutil.ReadAll(httpResp.Body)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		expected := map[string]interface{}{}
+		got := map[string]interface{}{}
+		err = json.Unmarshal(gotJson, &got)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+		err = json.Unmarshal([]byte(testCase.response), &expected)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if err := compare(expected, got); err != nil {
+			t.Error(err)
+			continue
+		}
+	}
+}
+
+func TestNotificationServerErrors(t *testing.T) {
+	testCases := []struct {
+		request  testData
+		response string
+	}{
+		{
+			testData{
+				raw: `{
+					"message_type": "string"
+				}`,
+			},
+			`
+			{
+				"error": {
+					"code": "500",
+					"message": "unsupported type: string",
+					"details": ""
+				}
+			}`,
+		},
+		{
+			testData{
+				raw: `invalid json`,
+			},
+			`{
+				"error": {
+					"code": "400",
+					"message": "invalid character 'i' looking for beginning of value",
+					"details": ""
+				}
+			}`,
+		},
+		{
+			testData{
+				raw: `{
+					"message_type": "TYPE_NEW_POSTING",
+					"field": [[
+				}`,
+			},
+			`{
+				"error": {
+					"code": "400",
+					"message": "invalid character '}' looking for beginning of value",
+					"details": ""
+				}
+			}`,
+		},
+		{
+			testData{
+				raw: `{
+					"message_type": "TYPE_NEW_POSTING"
+				}`,
+			},
+			`{
+				"result": true
+			}`,
+		},
+		{
+			testData{
+				raw: `{
+					"message_type": "TYPE_PING",
+					"time": "2019-08-24T14:15:22Z",
+				}`,
+			},
+			`{
+				"error": {
+					"code": "400",
+					"message": "invalid character '}' looking for beginning of object key string",
+					"details": ""
+				}
+			}`,
+		},
+		{
+			testData{
+				raw: `{
+					"message_type": "TYPE_CHAT_CLOSED"
+				}`,
+			},
+			`{
+				"result": true
+			}`,
+		},
+	}
+
+	port := getFreePort()
+
+	client := http.Client{}
+	server := NewNotificationServer(port)
+	server.Register(NewPostingType, func(req interface{}) error {
+		return fmt.Errorf("just error")
+	})
+	go func() {
+		if err := server.Run(); err != nil {
+			t.Fatalf("notification server is down: %s", err)
+		}
+	}()
+
+	// TODO: get rid of it
+	// Needed to make sure server is running
+	time.Sleep(3 * time.Second)
+
+	for _, testCase := range testCases {
+		httpResp, err := client.Post(fmt.Sprintf("http://0.0.0.0:%d/", port), "application/json", strings.NewReader(testCase.request.raw))
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		gotJson, err := ioutil.ReadAll(httpResp.Body)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		expected := map[string]interface{}{}
+		got := map[string]interface{}{}
+		err = json.Unmarshal(gotJson, &got)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+		err = json.Unmarshal([]byte(testCase.response), &expected)
+		if err != nil {
+			t.Error(err)
+			continue
+		}
+
+		if err := compare(expected, got); err != nil {
+			t.Error(err)
+			continue
+		}
+	}
+}
+
+func compare(expected map[string]interface{}, got map[string]interface{}) error {
+	for k, v := range expected {
+		if gotValue, ok := got[k]; !ok {
+			return fmt.Errorf("key %s is expected to present", k)
+		} else if !reflect.DeepEqual(gotValue, v) {
+			return fmt.Errorf("key %s is not equal, got: %v, want: %v", k, gotValue, v)
+		}
+	}
+	return nil
+}
+
+func getFreePort() int {
+	listener, _ := net.Listen("tcp", ":0")
+	defer listener.Close()
+
+	return listener.Addr().(*net.TCPAddr).Port
+}
+
+func comparatorWith(v1 interface{}) func(v2 interface{}) error {
+	return func(v2 interface{}) error {
+		if !reflect.DeepEqual(v1, v2) {
+			return fmt.Errorf("objects are not equal:\n got: %#v,\n want: %#v", v2, v1)
+		}
+		return nil
+	}
+}

ozon/notifications/types.go

@@ -0,0 +1,321 @@
+package notifications
+
+import "time"
+
+// Checking if the service is ready at initial connection and periodically after it
+type pingRequest struct {
+	Common
+
+	// Date and time when the notification was sent in UTC format
+	Time time.Time `json:"time"`
+}
+
+type pingResponse struct {
+	// Application version
+	Version string `json:"version"`
+
+	// Application name
+	Name string `json:"name"`
+
+	// Date and time when notification processing started in UTC format
+	Time time.Time `json:"time"`
+}
+
+type Common struct {
+	MessageType MessageType `json:"message_type"`
+}
+
+// New shipment
+type NewPosting struct {
+	Common
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// Products information
+	Products []Product `json:"products"`
+
+	// Date and time when the shipment processing started in the UTC format
+	InProccessAt time.Time `json:"in_process_at"`
+
+	// Warehouse identifier where the products for this shipment are stored
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+type Product struct {
+	// Product SKU
+	SKU int64 `json:"sku"`
+
+	// Product quantity
+	Quantity int64 `json:"quantity"`
+}
+
+// Shipment cancellation
+type PostingCancelled struct {
+	Common
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// Products information
+	Products []Product `json:"products"`
+
+	// Previous shipment status
+	OldState string `json:"old_state"`
+
+	// New shipment status: posting_canceled—canceled
+	NewState string `json:"new_state"`
+
+	// Date and time when the shipment status was changed in UTC format
+	ChangedStateDate time.Time `json:"changed_state_date"`
+
+	// Information about cancellation reason
+	Reason Reason `json:"reason"`
+
+	// Warehouse identifier where the products for this shipment are stored
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+type Reason struct {
+	// Cancellation reason identifier
+	Id int64 `json:"id"`
+
+	// Cancellation reason
+	Message string `json:"message"`
+}
+
+// Shipment status change
+type StateChanged struct {
+	Common
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// New shipment status
+	NewState string `json:"new_state"`
+
+	// Date and time when the shipment status was changed in UTC format
+	ChangedStateDate time.Time `json:"changed_state_date"`
+
+	// Warehouse identifier where the products for this shipment are stored
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+// Shipment shipping date change
+type CutoffDateChanged struct {
+	Common
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// New shipping date and time in UTC format
+	NewCutoffDate time.Time `json:"new_cutoff_date"`
+
+	// Previous shipping date and time in UTC format
+	OldCutoffDate time.Time `json:"old_cutoff_date"`
+
+	// Warehouse identifier where the products for this shipment are stored
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+// Shipment delivery date change
+type DeliveryDateChanged struct {
+	Common
+
+	// Shipment number
+	PostingNumber string `json:"posting_number"`
+
+	// New delivery start date and time in UTC format
+	NewDeliveryDateBegin time.Time `json:"new_delivery_date_begin"`
+
+	// New delivery end date and time in UTC format
+	NewDeliveryDateEnd time.Time `json:"new_delivery_date_end"`
+
+	// Previous delivery start date and time in UTC format
+	OldDeliveryDateBegin time.Time `json:"old_delivery_date_begin"`
+
+	// Previous delivery end date and time in UTC format
+	OldDeliveryDateEnd time.Time `json:"old_delivery_date_end"`
+
+	// Warehouse identifier where the products for this shipment are stored
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+// Product creation and update or processing error
+type CreateOrUpdateItem struct {
+	Common
+
+	// Product identifier in the seller's system
+	OfferId string `json:"offer_id"`
+
+	// Product identifier
+	ProductId int64 `json:"product_id"`
+
+	// An indication that errors occurred during the product creation or update
+	IsError bool `json:"is_error"`
+
+	// Update date and time
+	ChangedAt time.Time `json:"changed_at"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+// Product price index change
+type PriceIndexChanged struct {
+	Common
+
+	// Date and time of price index change
+	UpdatedAt time.Time `json:"updated_at"`
+
+	// Product SKU
+	SKU int64 `json:"sku"`
+
+	// Product identifier
+	ProductId int64 `json:"product_id"`
+
+	// Price index
+	PriceIndex int64 `json:"price_index"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+// Stock change at the seller's warehouse
+type StocksChanged struct {
+	Common
+
+	// Array with products data
+	Items []Item `json:"items"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+type Item struct {
+	// Update date and time
+	UpdatedAt time.Time `json:"updated_at"`
+
+	// Product SKU when working under the FBS or rFBS schemes
+	SKU int64 `json:"sku"`
+
+	// Product identifier
+	ProductId int64 `json:"product_id"`
+
+	// Array with product stocks data
+	Stocks []Stock `json:"stocks"`
+}
+
+type Stock struct {
+	// Warehouse identifier
+	WarehouseId int64 `json:"warehouse_id"`
+
+	// Total product stocks at the warehouse
+	Present int64 `json:"present"`
+
+	// Number of reserved products at the warehouse
+	Reserved int64 `json:"reserved"`
+}
+
+// New message in chat
+type NewMessage struct {
+	Common
+
+	// Chat identifier
+	ChatId string `json:"chat_id"`
+
+	// Chat type
+	ChatType string `json:"chat_type"`
+
+	// Message identifier
+	MessageId string `json:"message_id"`
+
+	// Message creation date
+	CreatedAt time.Time `json:"created_at"`
+
+	// Information about message sender
+	User User `json:"user"`
+
+	// Array with message content in Markdown format
+	Data []string `json:"data"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+type User struct {
+	// Sender identifier
+	Id string `json:"id"`
+
+	// Sender type
+	Type string `json:"type"`
+}
+
+// Message in chat has changed
+type UpdateMessage struct {
+	NewMessage
+
+	// Message update date
+	UpdatedAt time.Time `json:"updated_at"`
+}
+
+// Customer or support read your message
+type MessageRead struct {
+	NewMessage
+
+	// Last read message identifier
+	LastReadMessageId string `json:"last_read_message_id"`
+}
+
+// Chat is closed
+type ChatClosed struct {
+	Common
+
+	// Chat identifier
+	ChatId string `json:"chat_id"`
+
+	// Chat type
+	ChatType string `json:"chat_type"`
+
+	// Information about the user who closed the chat
+	User User `json:"user"`
+
+	// Seller identifier
+	SellerId int64 `json:"seller_id"`
+}
+
+type Response struct {
+	// Notification is received
+	Result bool `json:"result"`
+}
+
+type errorResponse struct {
+	// Information about the error
+	Data errorData `json:"error"`
+}
+
+type errorData struct {
+	// Error code
+	Code string `json:"code"`
+
+	// Detailed error description
+	Message string `json:"message"`
+
+	// Additional information
+	Details string `json:"details"`
+}

ozon/ozon.go

@@ -105,8 +105,8 @@ func (c Client) Strategies() *Strategies {
 	return c.strategies
 }
 
-func NewClient(clientId, apiKey string) *Client {
+func NewClient(httpClient core.HttpClient, clientId, apiKey string) *Client {
-	coreClient := core.NewClient(DefaultAPIBaseUrl, map[string]string{
+	coreClient := core.NewClient(httpClient, DefaultAPIBaseUrl, map[string]string{
 		"Client-Id": clientId,
 		"Api-Key":   apiKey,
 	})

ozon/polygons.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 
 	core "github.com/diphantxm/ozon-api-client"
@@ -25,12 +26,12 @@ type CreateDeliveryPolygonResponse struct {
 // You can link a polygon to the delivery method.
 //
 // Create a polygon getting its coordinates on https://geojson.io: mark at least 3 points on the map and connect them
-func (c Polygons) CreateDelivery(params *CreateDeliveryPolygonParams) (*CreateDeliveryPolygonResponse, error) {
+func (c Polygons) CreateDelivery(ctx context.Context, params *CreateDeliveryPolygonParams) (*CreateDeliveryPolygonResponse, error) {
 	url := "/v1/polygon/create"
 
 	resp := &CreateDeliveryPolygonResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -71,12 +72,12 @@ type LinkDeliveryMethodToPolygonResponse struct {
 }
 
 // Link delivery method to a delivery polygon
-func (c Polygons) Link(params *LinkDeliveryMethodToPolygonParams) (*LinkDeliveryMethodToPolygonResponse, error) {
+func (c Polygons) Link(ctx context.Context, params *LinkDeliveryMethodToPolygonParams) (*LinkDeliveryMethodToPolygonResponse, error) {
 	url := "/v1/polygon/bind"
 
 	resp := &LinkDeliveryMethodToPolygonResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -95,12 +96,12 @@ type DeletePolygonResponse struct {
 }
 
 // Delete polygon
-func (c Polygons) Delete(params *DeletePolygonParams) (*DeletePolygonResponse, error) {
+func (c Polygons) Delete(ctx context.Context, params *DeletePolygonParams) (*DeletePolygonResponse, error) {
 	url := "/v1/polygon/delete"
 
 	resp := &DeletePolygonResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/polygons_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -42,7 +43,8 @@ func TestCreateDeliveryPolygon(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Polygons().CreateDelivery(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Polygons().CreateDelivery(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -96,7 +98,8 @@ func TestLinkDeliveryMethodToPolygon(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Polygons().Link(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Polygons().Link(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -140,7 +143,8 @@ func TestDeletePolygon(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Polygons().Delete(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Polygons().Delete(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/products_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"fmt"
 	"net/http"
 	"testing"
@@ -70,7 +71,8 @@ func TestGetStocksInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetStocksInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetStocksInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -267,7 +269,8 @@ func TestGetProductDetails(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductDetails(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductDetails(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -341,7 +344,8 @@ func TestUpdateStocks(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UpdateStocks(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UpdateStocks(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -380,12 +384,12 @@ func TestStocksInSellersWarehouse(t *testing.T) {
 			http.StatusOK,
 			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
 			&StocksInSellersWarehouseParams{
-				FBSSKU: []string{"123"},
+				SKU: []string{"123"},
 			},
 			`{
 				"result": [
 				  {
-					"fbs_sku": 12,
+					"sku": 12,
 					"present": 34,
 					"product_id": 548761,
 					"reserved": 5,
@@ -410,7 +414,8 @@ func TestStocksInSellersWarehouse(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().StocksInSellersWarehouse(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().StocksInSellersWarehouse(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -420,11 +425,11 @@ func TestStocksInSellersWarehouse(t *testing.T) {
 		}
 
 		if resp.StatusCode == http.StatusOK {
-			if len(resp.Result) != len(test.params.FBSSKU) {
+			if len(resp.Result) != len(test.params.SKU) {
 				t.Errorf("Length of skus in request and response must be equal")
 			}
 			if len(resp.Result) > 0 {
-				if fmt.Sprint(resp.Result[0].FBSSKU) == test.params.FBSSKU[0] {
+				if fmt.Sprint(resp.Result[0].SKU) == test.params.SKU[0] {
 					t.Errorf("fbs sku in request and response are not equal")
 				}
 			}
@@ -454,6 +459,7 @@ func TestUpdatePrices(t *testing.T) {
 						OldPrice:             "0",
 						Price:                "1448",
 						ProductId:            1386,
+						PriceStrategyEnabled: PriceStrategyUnknown,
 					},
 				},
 			},
@@ -483,7 +489,8 @@ func TestUpdatePrices(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UpdatePrices(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UpdatePrices(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -555,7 +562,8 @@ func TestUpdateQuantityStockProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UpdateQuantityStockProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UpdateQuantityStockProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -689,7 +697,8 @@ func TestCreateOrUpdateProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().CreateOrUpdateProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().CreateOrUpdateProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -756,7 +765,8 @@ func TestGetListOfProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetListOfProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetListOfProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1002,7 +1012,8 @@ func TestGetProductsRatingBySKU(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductsRatingBySKU(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductsRatingBySKU(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1069,7 +1080,8 @@ func TestGetProductImportStatus(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductImportStatus(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductImportStatus(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1140,7 +1152,8 @@ func TestCreateProductByOzonID(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().CreateProductByOzonID(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().CreateProductByOzonID(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1208,7 +1221,8 @@ func TestUpdateProductImages(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UpdateProductImages(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UpdateProductImages(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1276,7 +1290,8 @@ func TestCheckImageUploadingStatus(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().CheckImageUploadingStatus(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().CheckImageUploadingStatus(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1471,7 +1486,8 @@ func TestListProductsByIDs(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().ListProductsByIDs(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().ListProductsByIDs(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1705,7 +1721,8 @@ func TestGetDescriptionOfProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetDescriptionOfProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetDescriptionOfProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1763,7 +1780,8 @@ func TestGetProductDescription(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductDescription(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductDescription(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1826,7 +1844,8 @@ func TestGetProductRangeLimit(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductRangeLimit()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductRangeLimit(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1882,7 +1901,8 @@ func TestChangeProductIDs(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().ChangeProductIDs(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().ChangeProductIDs(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1928,7 +1948,8 @@ func TestArchiveProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().ArchiveProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().ArchiveProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -1974,7 +1995,8 @@ func TestUnarchiveProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UnarchiveProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UnarchiveProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2030,7 +2052,8 @@ func TestRemoveProductWithoutSKU(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().RemoveProductWithoutSKU(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().RemoveProductWithoutSKU(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2107,7 +2130,8 @@ func TestListGeoRestrictions(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().ListGeoRestrictions(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().ListGeoRestrictions(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2156,7 +2180,8 @@ func TestUploadActivationCodes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UploadActivationCodes(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UploadActivationCodes(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2204,7 +2229,8 @@ func TestStatusOfUploadingActivationCodes(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().StatusOfUploadingActivationCodes(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().StatusOfUploadingActivationCodes(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2239,6 +2265,7 @@ func TestGetProductPriceInfo(t *testing.T) {
 				"result": {
 				  "items": [
 					{
+					  "acquiring": 0,
 					  "product_id": 243686911,
 					  "offer_id": "356792",
 					  "price": {
@@ -2254,9 +2281,28 @@ func TestGetProductPriceInfo(t *testing.T) {
 						"marketing_seller_price": "",
 						"auto_action_enabled": true
 					  },
-					  "price_index": "0.00",
+					  "price_indexes": {
+						"external_index_data": {
+						  "minimal_price": "string",
+						  "minimal_price_currency": "string",
+						  "price_index_value": 0
+						},
+						"ozon_index_data": {
+						  "minimal_price": "string",
+						  "minimal_price_currency": "string",
+						  "price_index_value": 0
+						},
+						"price_index": "WITHOUT_INDEX",
+						"self_marketplaces_index_data": {
+						  "minimal_price": "string",
+						  "minimal_price_currency": "string",
+						  "price_index_value": 0
+						}
+					  },
 					  "commissions": {
 						"sales_percent": 15,
+						"sales_percent_fbo": 15,
+						"sales_percent_fbs": 0,
 						"fbo_fulfillment_amount": 0,
 						"fbo_direct_flow_trans_min_amount": 31,
 						"fbo_direct_flow_trans_max_amount": 46.5,
@@ -2265,7 +2311,7 @@ func TestGetProductPriceInfo(t *testing.T) {
 						"fbo_return_flow_trans_min_amount": 21.7,
 						"fbo_return_flow_trans_max_amount": 21.7,
 						"fbs_first_mile_min_amount": 0,
-						"fbs_first_mile_max_amount": 0,
+						"fbs_first_mile_max_amount": 25,
 						"fbs_direct_flow_trans_min_amount": 41,
 						"fbs_direct_flow_trans_max_amount": 61.5,
 						"fbs_deliv_to_customer_amount": 60,
@@ -2297,7 +2343,8 @@ func TestGetProductPriceInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetProductPriceInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetProductPriceInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2359,7 +2406,8 @@ func TestGetMarkdownInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().GetMarkdownInfo(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().GetMarkdownInfo(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2414,7 +2462,8 @@ func TestSetDiscountOnMarkdownProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().SetDiscountOnMarkdownProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().SetDiscountOnMarkdownProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2465,7 +2514,8 @@ func TestNumberOfSubsToProductAvailability(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().NumberOfSubsToProductAvailability(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().NumberOfSubsToProductAvailability(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -2539,7 +2589,8 @@ func TestUpdateCharacteristics(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Products().UpdateCharacteristics(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Products().UpdateCharacteristics(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/promotions.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -15,7 +16,10 @@ type GetAvailablePromotionsResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []GetAvailablePromotionsResult `json:"result"`
+}
+
+type GetAvailablePromotionsResult struct {
 	// Promotion identifier
 	Id float64 `json:"id"`
 
@@ -67,16 +71,15 @@ type GetAvailablePromotionsResponse struct {
 
 	// Discount size
 	DiscountValue float64 `json:"discount_value"`
-	} `json:"result"`
 }
 
 // A method for getting a list of promotions that you can participate in
-func (c Promotions) GetAvailablePromotions() (*GetAvailablePromotionsResponse, error) {
+func (c Promotions) GetAvailablePromotions(ctx context.Context) (*GetAvailablePromotionsResponse, error) {
 	url := "/v1/actions"
 
 	resp := &GetAvailablePromotionsResponse{}
 
-	response, err := c.client.Request(http.MethodGet, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodGet, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -108,28 +111,32 @@ type AddProductToPromotionResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result AddProductToPromotionResult `json:"result"`
+}
+
+type AddProductToPromotionResult struct {
 	// List of product identifiers that were added to the promotion
 	ProductIds []float64 `json:"product_ids"`
 
 	// List of products that weren't added to the promotion
-		Rejected []struct {
+	Rejected []AddProductToPromotionResultRejected `json:"rejected"`
+}
+
+type AddProductToPromotionResultRejected struct {
 	// Product identifier
 	ProductId float64 `json:"product_id"`
 
 	// Reason why the product wasn't added to the promotion
 	Reason string `json:"reason"`
-		} `json:"rejected"`
-	} `json:"result"`
 }
 
 // A method for adding products to an available promotion
-func (c Promotions) AddToPromotion(params *AddProductToPromotionParams) (*AddProductToPromotionResponse, error) {
+func (c Promotions) AddToPromotion(ctx context.Context, params *AddProductToPromotionParams) (*AddProductToPromotionResponse, error) {
 	url := "/v1/actions/products/activate"
 
 	resp := &AddProductToPromotionResponse{}
 
-	response, err := c.client.Request(http.MethodGet, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodGet, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -154,13 +161,15 @@ type ProductsAvailableForPromotionResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ProductsAvailableForPromotionResult `json:"result"`
+}
+
+type ProductsAvailableForPromotionResult struct {
 	// Products list
 	Products []PromotionProduct `json:"products"`
 
 	// Total number of products that can participate in the promotion
 	Total float64 `json:"total"`
-	} `json:"result"`
 }
 
 type PromotionProduct struct {
@@ -187,12 +196,12 @@ type PromotionProduct struct {
 }
 
 // A method for getting a list of products that can participate in the promotion by the promotion identifier
-func (c Promotions) ProductsAvailableForPromotion(params *ProductsAvailableForPromotionParams) (*ProductsAvailableForPromotionResponse, error) {
+func (c Promotions) ProductsAvailableForPromotion(ctx context.Context, params *ProductsAvailableForPromotionParams) (*ProductsAvailableForPromotionResponse, error) {
 	url := "/v1/actions/candidates"
 
 	resp := &ProductsAvailableForPromotionResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -216,22 +225,24 @@ type ProductsInPromotionResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ProductsInPromotionResult `json:"reuslt"`
+}
+
+type ProductsInPromotionResult struct {
 	// Products list
 	Products []PromotionProduct `json:"products"`
 
 	// Total number of products that can participate in the promotion
 	Total float64 `json:"total"`
-	} `json:"reuslt"`
 }
 
 // A method for getting the list of products participating in the promotion by its identifier
-func (c Promotions) ProductsInPromotion(params *ProductsInPromotionParams) (*ProductsInPromotionResponse, error) {
+func (c Promotions) ProductsInPromotion(ctx context.Context, params *ProductsInPromotionParams) (*ProductsInPromotionResponse, error) {
 	url := "/v1/actions/products"
 
 	resp := &ProductsInPromotionResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -252,28 +263,32 @@ type RemoveProductFromPromotionResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result RemoveProductFromPromotionResult `json:"result"`
+}
+
+type RemoveProductFromPromotionResult struct {
 	// List of product identifiers that were removed from the promotion
 	ProductIds []float64 `json:"product_ids"`
 
 	// List of product identifiers that weren't removed from the promotion
-		Rejected []struct {
+	Rejected []RemoveProductFromPromotionResultRejected `json:"rejected"`
+}
+
+type RemoveProductFromPromotionResultRejected struct {
 	// Product identifier
 	ProductId float64 `json:"product_id"`
 
 	// Reason why the product wasn't removed from the promotion
 	Reason string `json:"reason"`
-		} `json:"rejected"`
-	} `json:"result"`
 }
 
 // A method for removing products from the promotion
-func (c Promotions) RemoveProduct(params *RemoveProductFromPromotionParams) (*RemoveProductFromPromotionResponse, error) {
+func (c Promotions) RemoveProduct(ctx context.Context, params *RemoveProductFromPromotionParams) (*RemoveProductFromPromotionResponse, error) {
 	url := "/v1/actions/products/deactivate"
 
 	resp := &RemoveProductFromPromotionResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -286,7 +301,10 @@ type ListHotSalePromotionsResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result []struct {
+	Result []ListHotSalePromotionsResult `json:"result"`
+}
+
+type ListHotSalePromotionsResult struct {
 	// Promotion end date
 	DateEnd string `json:"date_end"`
 
@@ -312,16 +330,15 @@ type ListHotSalePromotionsResponse struct {
 
 	// Promotion name
 	Title string `json:"title"`
-	} `json:"result"`
 }
 
 // List of available Hot Sale promotions
-func (c Promotions) ListHotSalePromotions() (*ListHotSalePromotionsResponse, error) {
+func (c Promotions) ListHotSalePromotions(ctx context.Context) (*ListHotSalePromotionsResponse, error) {
 	url := "/v1/actions/hotsales/list"
 
 	resp := &ListHotSalePromotionsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -345,9 +362,18 @@ type ProductsAvailableForHotSalePromotionResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ProductsAvailableForHotSalePromotionResult `json:"result"`
+}
+
+type ProductsAvailableForHotSalePromotionResult struct {
 	// Products list
-		Products []struct {
+	Products []ProductsAvailableForHotSalePromotionResultProduct `json:"products"`
+
+	// Total number of products that are available for the promotion
+	Total float64 `json:"total"`
+}
+
+type ProductsAvailableForHotSalePromotionResultProduct struct {
 	// Promotional product price
 	ActionPrice float64 `json:"action_price"`
 
@@ -368,20 +394,15 @@ type ProductsAvailableForHotSalePromotionResponse struct {
 
 	// Number of product units in a stock discount type promotion
 	Stock float64 `json:"stock"`
-		} `json:"products"`
-
-		// Total number of products that are available for the promotion
-		Total float64 `json:"total"`
-	} `json:"result"`
 }
 
 // Method for getting a list of products that can participate or are already participating in the Hot Sale promotion
-func (c Promotions) ProductsAvailableForHotSalePromotion(params *ProductsAvailableForHotSalePromotionParams) (*ProductsAvailableForHotSalePromotionResponse, error) {
+func (c Promotions) ProductsAvailableForHotSalePromotion(ctx context.Context, params *ProductsAvailableForHotSalePromotionParams) (*ProductsAvailableForHotSalePromotionResponse, error) {
 	url := "/v1/actions/hotsales/products"
 
 	resp := &ProductsAvailableForHotSalePromotionResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -413,24 +434,28 @@ type ProductsToHotSaleResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result ProductsToHotSaleResult `json:"result"`
+}
+
+type ProductsToHotSaleResult struct {
 	// List of products that haven't been added to the promotion
-		Rejected []struct {
+	Rejected []ProductsToHotSaleResultRejected `json:"rejected"`
+}
+
+type ProductsToHotSaleResultRejected struct {
 	//Product identifier
 	ProductId float64 `json:"product_id"`
 
 	// Reason why the product hasn't been added to the promotion
 	Reason string `json:"reason"`
-		} `json:"rejected"`
-	} `json:"result"`
 }
 
-func (c Promotions) AddProductsToHotSale(params *AddProductsToHotSaleParams) (*ProductsToHotSaleResponse, error) {
+func (c Promotions) AddProductsToHotSale(ctx context.Context, params *AddProductsToHotSaleParams) (*ProductsToHotSaleResponse, error) {
 	url := "/v1/actions/hotsales/activate"
 
 	resp := &ProductsToHotSaleResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -448,12 +473,12 @@ type RemoveProductsToHotSaleParams struct {
 }
 
 // Remove product from the Hot Sale promotion
-func (c Promotions) RemoveProductsToHotSale(params *RemoveProductsToHotSaleParams) (*ProductsToHotSaleResponse, error) {
+func (c Promotions) RemoveProductsToHotSale(ctx context.Context, params *RemoveProductsToHotSaleParams) (*ProductsToHotSaleResponse, error) {
 	url := "/v1/actions/hotsales/activate"
 
 	resp := &ProductsToHotSaleResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -477,7 +502,10 @@ type ListDiscountRequestsResponse struct {
 	core.CommonResponse
 
 	// List of requests
-	Result []struct {
+	Result []ListDiscountRequestsResult `json:"result"`
+}
+
+type ListDiscountRequestsResult struct {
 	// Request ID
 	Id uint64 `json:"id"`
 
@@ -582,16 +610,15 @@ type ListDiscountRequestsResponse struct {
 
 	// Approved price fee percent
 	ApprovedPriceFeePercent float64 `json:"approved_price_fee_percent"`
-	} `json:"result"`
 }
 
 // Method for getting a list of products that customers want to buy with discount
-func (c Promotions) ListDiscountRequests(params *ListDiscountRequestsParams) (*ListDiscountRequestsResponse, error) {
+func (c Promotions) ListDiscountRequests(ctx context.Context, params *ListDiscountRequestsParams) (*ListDiscountRequestsResponse, error) {
 	url := "/v1/actions/discounts-task/list"
 
 	resp := &ListDiscountRequestsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -626,33 +653,37 @@ type DiscountRequestResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result DiscountRequestResult `json:"result"`
-		// Errors when creating a request
+}
-		FailDetails []struct {
-			// Request ID
-			TaskId uint64 `json:"task_id"`
 
-			// Error message
+type DiscountRequestResult struct {
-			ErrorForUser string `json:"error_for_user"`
+	// Errors when creating a request
-		} `json:"fail_details"`
+	FailDetails []DiscountRequestResultFailDetail `json:"fail_details"`
 
 	// The number of requests with a successful status change
 	SuccessCount int32 `json:"success_count"`
 
 	// The number of requests that failed to change their status
 	FailCount int32 `json:"fail_count"`
-	} `json:"result"`
+}
+
+type DiscountRequestResultFailDetail struct {
+	// Request ID
+	TaskId uint64 `json:"task_id"`
+
+	// Error message
+	ErrorForUser string `json:"error_for_user"`
 }
 
 // You can approve applications in statuses:
 //   - NEW — new
 //   - SEEN — viewed
-func (c Promotions) ApproveDiscountRequest(params *DiscountRequestParams) (*DiscountRequestResponse, error) {
+func (c Promotions) ApproveDiscountRequest(ctx context.Context, params *DiscountRequestParams) (*DiscountRequestResponse, error) {
 	url := "/v1/actions/discounts-task/approve"
 
 	resp := &DiscountRequestResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -664,12 +695,12 @@ func (c Promotions) ApproveDiscountRequest(params *DiscountRequestParams) (*Disc
 // You can decline applications in statuses:
 //   - NEW—new
 //   - SEEN—viewed
-func (c Promotions) DeclineDiscountRequest(params *DiscountRequestParams) (*DiscountRequestResponse, error) {
+func (c Promotions) DeclineDiscountRequest(ctx context.Context, params *DiscountRequestParams) (*DiscountRequestResponse, error) {
 	url := "/v1/actions/discounts-task/decline"
 
 	resp := &DiscountRequestResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/promotions_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -56,7 +57,8 @@ func TestGetAvailablePromotions(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().GetAvailablePromotions()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().GetAvailablePromotions(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -125,7 +127,8 @@ func TestAddToPromotion(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().AddToPromotion(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().AddToPromotion(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -201,7 +204,8 @@ func TestProductsAvailableForPromotion(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ProductsAvailableForPromotion(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ProductsAvailableForPromotion(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -262,7 +266,8 @@ func TestProductsInPromotion(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ProductsInPromotion(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ProductsInPromotion(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -314,7 +319,8 @@ func TestRemoveProduct(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().RemoveProduct(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().RemoveProduct(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -373,7 +379,8 @@ func TestListHotSalePromotions(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ListHotSalePromotions()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ListHotSalePromotions(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -434,7 +441,8 @@ func TestProductsAvailableForHotSalePromotion(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ProductsAvailableForHotSalePromotion(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ProductsAvailableForHotSalePromotion(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -494,7 +502,8 @@ func TestAddProductsToHotSale(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().AddProductsToHotSale(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().AddProductsToHotSale(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -548,7 +557,8 @@ func TestRemoveProductsToHotSale(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().RemoveProductsToHotSale(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().RemoveProductsToHotSale(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -634,7 +644,8 @@ func TestListDiscountRequests(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ListDiscountRequests(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ListDiscountRequests(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -697,7 +708,8 @@ func TestApproveDiscountRequest(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().ApproveDiscountRequest(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().ApproveDiscountRequest(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -760,7 +772,8 @@ func TestDeclineDiscountRequest(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Promotions().DeclineDiscountRequest(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Promotions().DeclineDiscountRequest(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/rating.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -15,29 +16,27 @@ type GetCurrentSellerRatingInfoResponse struct {
 	core.CommonResponse
 
 	// Rating groups list
-	Groups []struct {
+	Groups []GetCurrentSellerRatingInfoGroup `json:"groups"`
+}
+
+type GetCurrentSellerRatingInfoGroup struct {
 	// Ratings group name
 	GroupName string `json:"group_name"`
 
 	// Ratings list
-		Items []struct {
+	Items []GetCurrentSellerRatingInfoGroupItem `json:"items"`
+
+	// An indication that the penalty points balance is exceeded
+	PenaltyScoreExceeded bool `json:"penalty_score_exceeded"`
+
+	// An indication that you participate in the Premium program
+	Premium bool `json:"premium"`
+}
+
+type GetCurrentSellerRatingInfoGroupItem struct {
 
 	// Rating change: the ratio of the previous value to the current one
-			Change struct {
+	Change GetCurrentSellerRatingInfoGroupItemChange `json:"change"`
-				// How the rating value has changed:
-				//   - DIRECTION_UNKNOWN — unknown.
-				//   - DIRECTION_NONE — has not changed.
-				//   - DIRECTION_RISE — has increased.
-				//   - DIRECTION_FALL — has dropped.
-				Direction string `json:"direction"`
-
-				// What the change means:
-				//   - MEANING_UNKNOWN — unknown.
-				//   - MEANING_NONE — neutral.
-				//   - MEANING_GOOD — the indicator is improving, everything is good.
-				//   - MEANING_BAD — the indicator is dropping, you should do something.
-				Meaning string `json:"meaning"`
-			} `json:"change"`
 
 	// Current rating value
 	CurrentValue float64 `json:"current_value"`
@@ -74,22 +73,30 @@ type GetCurrentSellerRatingInfoResponse struct {
 	//   - REVIEW_SCORE — score,
 	//   - COUNT
 	ValueType string `json:"value_type"`
-		} `json:"items"`
-
-		// An indication that the penalty points balance is exceeded
-		PenaltyScoreExceeded bool `json:"penalty_score_exceeded"`
-
-		// An indication that you participate in the Premium program
-		Premium bool `json:"premium"`
-	} `json:"groups"`
 }
 
-func (c Rating) GetCurrentSellerRatingInfo() (*GetCurrentSellerRatingInfoResponse, error) {
+type GetCurrentSellerRatingInfoGroupItemChange struct {
+	// How the rating value has changed:
+	//   - DIRECTION_UNKNOWN — unknown.
+	//   - DIRECTION_NONE — has not changed.
+	//   - DIRECTION_RISE — has increased.
+	//   - DIRECTION_FALL — has dropped.
+	Direction string `json:"direction"`
+
+	// What the change means:
+	//   - MEANING_UNKNOWN — unknown.
+	//   - MEANING_NONE — neutral.
+	//   - MEANING_GOOD — the indicator is improving, everything is good.
+	//   - MEANING_BAD — the indicator is dropping, you should do something.
+	Meaning string `json:"meaning"`
+}
+
+func (c Rating) GetCurrentSellerRatingInfo(ctx context.Context) (*GetCurrentSellerRatingInfoResponse, error) {
 	url := "/v1/rating/summary"
 
 	resp := &GetCurrentSellerRatingInfoResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -116,12 +123,21 @@ type GetSellerRatingInfoPeriodResponse struct {
 	core.CommonResponse
 
 	// Information on the Premium program penalty points
-	PremiumScores []struct {
+	PremiumScores []GetSellerRatingInfoPeriodPremiumScores `json:"premium_scores"`
+
+	// Information on the seller ratings
+	Ratings []GetSellerRatingInfoPeriodRating `json:"ratings"`
+}
+
+type GetSellerRatingInfoPeriodPremiumScores struct {
 	// Rating name
 	Rating string `json:"rating"`
 
 	// Information on penalty points
-		Scores []struct {
+	Scores []GetSellerRatingInfoPeriodPremiumScore `json:"scores"`
+}
+
+type GetSellerRatingInfoPeriodPremiumScore struct {
 	// Date when the penalty points were received
 	Date time.Time `json:"date"`
 
@@ -130,11 +146,9 @@ type GetSellerRatingInfoPeriodResponse struct {
 
 	// Number of received penalty points
 	Value int32 `json:"value"`
-		} `json:"scores"`
+}
-	} `json:"premium_scores"`
 
-	// Information on the seller ratings
+type GetSellerRatingInfoPeriodRating struct {
-	Ratings []struct {
 	// Rating threshold, after which sales will be blocked
 	DangerThreshold float64 `json:"danger_threshold"`
 
@@ -145,7 +159,13 @@ type GetSellerRatingInfoPeriodResponse struct {
 	Rating string `json:"rating"`
 
 	// Rating values list
-		Values []struct {
+	Values []GetSellerRatingInfoPeriodRatingValue `json:"values"`
+
+	// Rating threshold, after which a warning about possible blocking appears
+	WarningThreshold float64 `json:"warning_threshold"`
+}
+
+type GetSellerRatingInfoPeriodRatingValue struct {
 	// Rating calculation start date
 	DateFrom time.Time `json:"date_from"`
 
@@ -153,7 +173,13 @@ type GetSellerRatingInfoPeriodResponse struct {
 	DateTo time.Time `json:"date_to"`
 
 	// Rating status
-			Status struct {
+	Status GetSellerRatingInfoPeriodRatingValueStatus `json:"status"`
+
+	// Rating value
+	Value float64 `json:"value"`
+}
+
+type GetSellerRatingInfoPeriodRatingValueStatus struct {
 	// Indication if the rating threshold for blocking is exceeded
 	Danger bool `json:"danger"`
 
@@ -162,23 +188,14 @@ type GetSellerRatingInfoPeriodResponse struct {
 
 	// Indication of a warning that the threshold for blocking may be exceeded
 	Warning bool `json:"warning"`
-			} `json:"status"`
-
-			// Rating value
-			Value float64 `json:"value"`
-		} `json:"values"`
-
-		// Rating threshold, after which a warning about possible blocking appears
-		WarningThreshold float64 `json:"warning_threshold"`
-	} `json:"ratings"`
 }
 
-func (c Rating) GetSellerRatingInfoForPeriod(params *GetSellerRatingInfoForPeriodParams) (*GetSellerRatingInfoPeriodResponse, error) {
+func (c Rating) GetSellerRatingInfoForPeriod(ctx context.Context, params *GetSellerRatingInfoForPeriodParams) (*GetSellerRatingInfoPeriodResponse, error) {
 	url := "/v1/rating/history"
 
 	resp := &GetSellerRatingInfoPeriodResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/rating_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -58,7 +59,8 @@ func TestGetCurrentRatingInfo(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Rating().GetCurrentSellerRatingInfo()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Rating().GetCurrentSellerRatingInfo(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -146,7 +148,8 @@ func TestGetRatingInfoForPeriod(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Rating().GetSellerRatingInfoForPeriod(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Rating().GetSellerRatingInfoForPeriod(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/reports.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -38,9 +39,18 @@ type GetReportsListResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetReportsListResult `json:"result"`
+}
+
+type GetReportsListResult struct {
 	// Array with generated reports
-		Reports []struct {
+	Reports []GetReportsListResultReport `json:"reports"`
+
+	// Total number of reports
+	Total int32 `json:"total"`
+}
+
+type GetReportsListResultReport struct {
 	// Unique report identifier
 	Code string `json:"code"`
 
@@ -54,8 +64,7 @@ type GetReportsListResponse struct {
 	File string `json:"file"`
 
 	// Array with the filters specified when the seller created the report
-			Params struct {
+	Params map[string]string `json:"params"`
-			} `json:"params"`
 
 	// Report type:
 	//   - SELLER_PRODUCTS — products report,
@@ -72,20 +81,15 @@ type GetReportsListResponse struct {
 	//   - `success`
 	//   - `failed`
 	Status string `json:"status"`
-		} `json:"reports"`
-
-		// Total number of reports
-		Total int32 `json:"total"`
-	} `json:"result"`
 }
 
 // Returns the list of reports that have been generated before
-func (c Reports) GetList(params *GetReportsListParams) (*GetReportsListResponse, error) {
+func (c Reports) GetList(ctx context.Context, params *GetReportsListParams) (*GetReportsListResponse, error) {
 	url := "/v1/report/list"
 
 	resp := &GetReportsListResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -103,7 +107,10 @@ type GetReportDetailsResponse struct {
 	core.CommonResponse
 
 	// Report details
-	Result struct {
+	Result GetReportDetailResult `json:"result"`
+}
+
+type GetReportDetailResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
 
@@ -134,16 +141,15 @@ type GetReportDetailsResponse struct {
 	//   - success
 	//   - failed
 	Status string `json:"status"`
-	} `json:"result"`
 }
 
 // Returns information about a created report by its identifier
-func (c Reports) GetReportDetails(params *GetReportDetailsParams) (*GetReportDetailsResponse, error) {
+func (c Reports) GetReportDetails(ctx context.Context, params *GetReportDetailsParams) (*GetReportDetailsResponse, error) {
 	url := "/v1/report/info"
 
 	resp := &GetReportDetailsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -178,20 +184,23 @@ type GetFinancialReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetFinancialResultResult `json:"result"`
+}
+
+type GetFinancialResultResult struct {
 	// Reports list
-		CashFlows []struct {
+	CashFlows []GetFinancialResultResultCashflow `json:"cash_flows"`
+
+	// Detailed info
+	Details GetFinancialResultResultDetail `json:"details"`
+
+	// Number of pages with reports
+	PageCount int64 `json:"page_count"`
+}
+
+type GetFinancialResultResultCashflow struct {
 	// Period data
-			Period struct {
+	Period GetFinancialResultResultCashflowPeriod `json:"period"`
-				// Period identifier
-				Id int64 `json:"id"`
-
-				// Period start
-				Begin time.Time `json:"begin"`
-
-				// Period end
-				End time.Time `json:"end"`
-			} `json:"period"`
 
 	// Sum of sold products prices
 	OrdersAmount float64 `json:"order_amount"`
@@ -210,113 +219,186 @@ type GetFinancialReportResponse struct {
 
 	// Code of the currency used to calculate the commissions
 	CurrencyCode string `json:"currency_code"`
-		} `json:"cash_flows"`
+}
 
-		// Detailed info
+type GetFinancialResultResultCashflowPeriod struct {
-		Details struct {
+	// Period identifier
+	Id int64 `json:"id"`
+
+	// Period start
+	Begin time.Time `json:"begin"`
+
+	// Period end
+	End time.Time `json:"end"`
+}
+
+type GetFinancialResultResultDetail struct {
 	// Balance on the beginning of period
 	BeginBalanceAmount float64 `json:"begin_balance_amount"`
 
 	// Orders
-			Delivery struct {
+	Delivery GetFinancialResultResultDetailDelivery `json:"delivery"`
-				Total float64 `json:"total"`
-
-				Amount float64 `json:"amount"`
-
-				DeliveryServices struct {
-					Total float64 `json:"total"`
-
-					Items []struct {
-						Name DetailsDeliveryItemName `json:"name"`
-
-						Price float64 `json:"price"`
-					} `json:"items"`
-				} `json:"delivery_services"`
-			} `json:"delivery"`
 
+	// Amount to be paid for the period
 	InvoiceTransfer float64 `json:"invoice_transfer"`
 
+	// Transfer under loan agreements
 	Loan float64 `json:"loan"`
 
-			Payments []struct {
+	// Paid for the period
-				CurrencyCode string `json:"currency_code"`
+	Payments []GetFinancialResultResultDetailPayment `json:"payments"`
 
-				Payment float64 `json:"payment"`
+	// Period data
-			} `json:"payments"`
+	Period GetFinancialResultResultDetailPeriod `json:"period"`
 
-			Period struct {
+	// Returns and cancellations
-				Begin time.Time `json:"begin"`
+	Return GetFinancialResultResultDetailReturn `json:"return"`
 
-				End time.Time `json:"end"`
+	// rFBS transfers
+	RFBS GetFinancialResultResultDetailRFBS `json:"rfbs"`
 
-				Id int64 `json:"id"`
+	// Services
-			} `json:"period"`
+	Services GetFinancialResultResultDetailService `json:"services"`
 
-			Return struct {
+	// Compensation and other accruals
+	Others GetFinancialResultResultDetailOthers `json:"others"`
+
+	// Balance at the end of the period
+	EndBalanceAmount float64 `json:"end_balance_amount"`
+}
+
+type GetFinancialResultResultDetailDelivery struct {
+	// Total amount
 	Total float64 `json:"total"`
 
+	// Amount for which products were purchased, including commission fees
 	Amount float64 `json:"amount"`
 
-				ReturnServices struct {
+	// Processing and delivery fees
+	DeliveryServices GetFinancialResultResultDetailDeliveryServices `json:"delivery_services"`
+}
+
+type GetFinancialResultResultDetailDeliveryServices struct {
+	// Total amount
 	Total float64 `json:"total"`
 
-					Items []struct {
+	// Details
+	Items []GetFinancialResultResultDetailDeliveryServicesItem `json:"items"`
+}
+
+type GetFinancialResultResultDetailDeliveryServicesItem struct {
+	// Operation name
+	Name DetailsDeliveryItemName `json:"name"`
+
+	// Amount by operation
+	Price float64 `json:"price"`
+}
+
+type GetFinancialResultResultDetailPayment struct {
+	// Currency
+	CurrencyCode string `json:"currency_code"`
+
+	// Payment amount
+	Payment float64 `json:"payment"`
+}
+
+type GetFinancialResultResultDetailPeriod struct {
+	// Period start
+	Begin time.Time `json:"begin"`
+
+	// Period end
+	End time.Time `json:"end"`
+
+	// Period identifier
+	Id int64 `json:"id"`
+}
+
+type GetFinancialResultResultDetailReturn struct {
+	// Total amount
+	Total float64 `json:"total"`
+
+	// Amount of returns received, including commission fees
+	Amount float64 `json:"amount"`
+
+	// Returns and cancellation fees
+	ReturnServices GetFinancialResultResultDetailReturnServices `json:"return_services"`
+}
+
+type GetFinancialResultResultDetailReturnServices struct {
+	// Total amount
+	Total float64 `json:"total"`
+
+	// Details
+	Items []GetFinancialResultResultDetailReturnServicesItem `json:"items"`
+}
+
+type GetFinancialResultResultDetailReturnServicesItem struct {
+	// Operation name
 	Name DetailsReturnServiceName `json:"name"`
 
+	// Amount by operation
 	Price float64 `json:"price"`
-					} `json:"items"`
+}
-				} `json:"return_services"`
-			} `json:"return"`
 
-			RFBS struct {
+type GetFinancialResultResultDetailRFBS struct {
+	// Total amount
 	Total float64 `json:"total"`
 
+	// Transfers from customers
 	TransferDelivery float64 `json:"transfer_delivery"`
 
+	// Return of transfers to customers
 	TransferDeliveryReturn float64 `json:"transfer_delivery_return"`
 
+	// Compensation of delivery fees
 	CompensationDeliveryReturn float64 `json:"compensation_delivery_return"`
 
+	// Transfers of partial refunds to customers
 	PartialCompensation float64 `json:"partial_compensation"`
 
+	// Compensation of partial refunds
 	PartialCompensationReturn float64 `json:"partial_compensation_return"`
-			} `json:"rfbs"`
+}
 
-			Services struct {
+type GetFinancialResultResultDetailService struct {
+	// Total amount
 	Total float64 `json:"total"`
 
-				Items []struct {
+	// Details
+	Items []GetFinancialResultResultDetailServiceItem `json:"items"`
+}
+
+type GetFinancialResultResultDetailServiceItem struct {
+	// Operation name
 	Name DetailsServiceItemName `json:"name"`
 
+	// Amount by operation
 	Price float64 `json:"price"`
-				} `json:"items"`
+}
-			} `json:"services"`
 
-			Others struct {
+type GetFinancialResultResultDetailOthers struct {
+	// Total amount
 	Total float64 `json:"total"`
 
-				Items []struct {
+	// Details
+	Items []GetFinancialResultResultDetailOthersItem `json:"items"`
+}
+
+type GetFinancialResultResultDetailOthersItem struct {
+	// Operation name
 	Name DetailsOtherItemName `json:"name"`
 
+	// Amount by operation
 	Price float64 `json:"price"`
-				} `json:"items"`
-			} `json:"others"`
-
-			EndBalanceAmount float64 `json:"end_balance_amount"`
-		} `json:"details"`
-
-		// Number of pages with reports
-		PageCount int64 `json:"page_count"`
-	} `json:"result"`
 }
 
 // Returns information about a created report by its identifier
-func (c Reports) GetFinancial(params *GetFinancialReportParams) (*GetFinancialReportResponse, error) {
+func (c Reports) GetFinancial(ctx context.Context, params *GetFinancialReportParams) (*GetFinancialReportResponse, error) {
 	url := "/v1/finance/cash-flow-statement/list"
 
 	resp := &GetFinancialReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -350,19 +432,21 @@ type GetProductsReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetProductsReportResult `json:"result"`
+}
+
+type GetProductsReportResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
-	} `json:"result"`
 }
 
 // Method for getting a report with products data. For example, Ozon ID, number of products, prices, status
-func (c Reports) GetProducts(params *GetProductsReportParams) (*GetProductsReportResponse, error) {
+func (c Reports) GetProducts(ctx context.Context, params *GetProductsReportParams) (*GetProductsReportResponse, error) {
 	url := "/v1/report/products/create"
 
 	resp := &GetProductsReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -383,19 +467,21 @@ type GetStocksReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetStocksReportResult `json:"result"`
+}
+
+type GetStocksReportResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
-	} `json:"result"`
 }
 
 // Report with information about the number of available and reserved products in stock
-func (c Reports) GetStocks(params *GetStocksReportParams) (*GetStocksReportResponse, error) {
+func (c Reports) GetStocks(ctx context.Context, params *GetStocksReportParams) (*GetStocksReportResponse, error) {
 	url := "/v1/report/stock/create"
 
 	resp := &GetStocksReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -422,10 +508,12 @@ type GetProductsMovementReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetProductsMovementReportResult `json:"result"`
+}
+
+type GetProductsMovementReportResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
-	} `json:"result"`
 }
 
 // Report with complete information on products, as well as the number of products with statuses:
@@ -433,12 +521,12 @@ type GetProductsMovementReportResponse struct {
 //   - products in transit between the fulfillment centers,
 //   - products in delivery,
 //   - products to be sold
-func (c Reports) GetProductsMovement(params *GetProductsMovementReportParams) (*GetProductsMovementReportResponse, error) {
+func (c Reports) GetProductsMovement(ctx context.Context, params *GetProductsMovementReportParams) (*GetProductsMovementReportResponse, error) {
 	url := "/v1/report/products/movement/create"
 
 	resp := &GetProductsMovementReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -473,21 +561,23 @@ type GetReturnsReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetReturnReportResult `json:"result"`
+}
+
+type GetReturnReportResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
-	} `json:"result"`
 }
 
 // The report contains information about returned products that were accepted from the customer, ready for pickup, or delivered to the seller.
 //
 // The method is only suitable for orders shipped from the seller's warehouse
-func (c Reports) GetReturns(params *GetReturnsReportParams) (*GetReturnsReportResponse, error) {
+func (c Reports) GetReturns(ctx context.Context, params *GetReturnsReportParams) (*GetReturnsReportResponse, error) {
 	url := "/v1/report/returns/create"
 
 	resp := &GetReturnsReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -542,10 +632,12 @@ type GetShipmentReportResponse struct {
 	core.CommonResponse
 
 	// Method result
-	Result struct {
+	Result GetShipmentReportResult `json:"result"`
+}
+
+type GetShipmentReportResult struct {
 	// Unique report identifier
 	Code string `json:"code"`
-	} `json:"result"`
 }
 
 // Shipment report with orders details:
@@ -555,12 +647,12 @@ type GetShipmentReportResponse struct {
 //   - shipment numbers
 //   - shipment costs
 //   - shipments contents
-func (c Reports) GetShipment(params *GetShipmentReportParams) (*GetShipmentReportResponse, error) {
+func (c Reports) GetShipment(ctx context.Context, params *GetShipmentReportParams) (*GetShipmentReportResponse, error) {
 	url := "/v1/report/postings/create"
 
 	resp := &GetShipmentReportResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -580,12 +672,12 @@ type IssueOnDiscountedProductsResponse struct {
 // For example, Ozon can discount a product due to damage when delivering.
 //
 // Returns report identifier. To get the report, send the identifier in the request body of a method `/v1/report/discounted/info`
-func (c Reports) IssueOnDiscountedProducts() (*IssueOnDiscountedProductsResponse, error) {
+func (c Reports) IssueOnDiscountedProducts(ctx context.Context) (*IssueOnDiscountedProductsResponse, error) {
 	url := "/v1/report/discounted/create"
 
 	resp := &IssueOnDiscountedProductsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -603,7 +695,10 @@ type ReportOnDiscountedProductsResponse struct {
 	core.CommonResponse
 
 	// Report information
-	Report struct {
+	Report ReportonDiscountedProductsReport `json:"report"`
+}
+
+type ReportonDiscountedProductsReport struct {
 	// Report creation date
 	CreatedAt time.Time `json:"created_at"`
 
@@ -619,16 +714,15 @@ type ReportOnDiscountedProductsResponse struct {
 
 	// Report generation error code
 	Error string `json:"error"`
-	} `json:"report"`
 }
 
 // By report identifier, returns information about the report generated earlier
-func (c Reports) ReportOnDiscountedProducts(params *ReportOnDiscountedProductsParams) (*ReportOnDiscountedProductsResponse, error) {
+func (c Reports) ReportOnDiscountedProducts(ctx context.Context, params *ReportOnDiscountedProductsParams) (*ReportOnDiscountedProductsResponse, error) {
 	url := "/v1/report/discounted/info"
 
 	resp := &ReportOnDiscountedProductsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -638,12 +732,12 @@ func (c Reports) ReportOnDiscountedProducts(params *ReportOnDiscountedProductsPa
 }
 
 // By report identifier, returns information about the report generated earlier
-func (c Reports) ListReportsOnDiscountedProducts() (*ReportOnDiscountedProductsResponse, error) {
+func (c Reports) ListReportsOnDiscountedProducts(ctx context.Context) (*ReportOnDiscountedProductsResponse, error) {
 	url := "/v1/report/discounted/list"
 
 	resp := &ReportOnDiscountedProductsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/reports_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -69,7 +70,8 @@ func TestGetList(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetList(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetList(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -130,7 +132,8 @@ func TestGetReportDetails(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetReportDetails(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetReportDetails(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -274,7 +277,8 @@ func TestGetFinancialReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetFinancial(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetFinancial(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -328,7 +332,8 @@ func TestGetProductsReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -380,7 +385,8 @@ func TestGetStocksReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetStocks(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetStocks(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -435,7 +441,8 @@ func TestGetProductsMovementReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetProductsMovement(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetProductsMovement(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -491,7 +498,8 @@ func TestGetReturnsReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetReturns(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetReturns(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -549,7 +557,8 @@ func TestGetShipmentReport(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().GetShipment(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().GetShipment(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -596,7 +605,8 @@ func TestIssueOnDiscountedProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().IssueOnDiscountedProducts()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().IssueOnDiscountedProducts(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -653,7 +663,8 @@ func TestReportOnDiscountedProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().ReportOnDiscountedProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().ReportOnDiscountedProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -701,7 +712,8 @@ func TestListReportsOnDiscountedProducts(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Reports().ListReportsOnDiscountedProducts()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Reports().ListReportsOnDiscountedProducts(ctx)
 		if err != nil {
 			t.Error(err)
 		}

ozon/returns.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -28,7 +29,8 @@ type GetFBOReturnsFilter struct {
 	// Shipment number
 	PostingNumber string `json:"posting_number"`
 
-	Status []string `json:"status"`
+	// Return status
+	Status []GetFBOReturnsFilterStatus `json:"status"`
 }
 
 type GetFBOReturnsResponse struct {
@@ -38,7 +40,10 @@ type GetFBOReturnsResponse struct {
 	LastId int64 `json:"last_id"`
 
 	// Returns information
-	Returns []struct {
+	Returns []GetFBOReturnsReturn `json:"returns"`
+}
+
+type GetFBOReturnsReturn struct {
 	// Time when a return was received from the customer
 	AcceptedFromCustomerMoment time.Time `json:"accepted_from_customer_moment"`
 
@@ -70,17 +75,16 @@ type GetFBOReturnsResponse struct {
 	SKU int64 `json:"sku"`
 
 	// Return status
-		Status string `json:"status_name"`
+	Status GetFBOReturnsReturnStatus `json:"status_name"`
-	} `json:"returns"`
 }
 
 // Method for getting information on returned products that are sold from the Ozon warehouse
-func (c Returns) GetFBOReturns(params *GetFBOReturnsParams) (*GetFBOReturnsResponse, error) {
+func (c Returns) GetFBOReturns(ctx context.Context, params *GetFBOReturnsParams) (*GetFBOReturnsResponse, error) {
 	url := "/v3/returns/company/fbo"
 
 	resp := &GetFBOReturnsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -98,9 +102,10 @@ type GetFBSReturnsParams struct {
 	//   - minimum — 1
 	Limit int64 `json:"limit"`
 
-	// Number of elements that will be skipped in the response.
+	// Return identifier that was loaded the last time.
-	// For example, if offset=10, the response will start with the 11th element found
+	// Return identifiers with the higher value than `last_id`
-	Offset int64 `json:"offset"`
+	// will be returned in the response.
+	LastId int64 `json:"offset"`
 }
 
 type GetFBSReturnsFilter struct {
@@ -108,7 +113,7 @@ type GetFBSReturnsFilter struct {
 	AcceptedFromCustomerMoment GetFBSReturnsFilterTimeRange `json:"accepted_from_customer_moment"`
 
 	// Last day of free storage
-	LastFreeWaitingDay []GetFBSReturnsFilterTimeRange `json:"last_free_waiting_dat"`
+	LastFreeWaitingDay GetFBSReturnsFilterTimeRange `json:"last_free_waiting_dat"`
 
 	// Order ID
 	OrderId int64 `json:"order_id"`
@@ -122,13 +127,8 @@ type GetFBSReturnsFilter struct {
 	// Product ID
 	ProductOfferId string `json:"product_offer_id"`
 
-	// Return status:
+	// Return status
-	//   - returned_to_seller — returned to seller,
+	Status GetFBSReturnsFilterStatus `json:"status"`
-	//   - waiting_for_seller — waiting for seller,
-	//   - accepted_from_customer — accepted from customer,
-	//   - cancelled_with_compensation — cancelled with compensation,
-	//   - ready_for_shipment — ready for shipment
-	Status string `json:"status"`
 }
 
 type GetFBSReturnsFilterTimeRange struct {
@@ -150,12 +150,16 @@ type GetFBSReturnsFilterTimeRange struct {
 type GetFBSReturnsResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Return identifier that was loaded the last time.
-		// Elements counter in the response
+	// Return identifiers with the higher value than `last_id`
-		Count int64 `json:"count"`
+	// will be returned in the response
+	LastId int64 `json:"last_id"`
 
 	// Returns information
-		Returns []struct {
+	Returns []GetFBSReturnResultReturn `json:"returns"`
+}
+
+type GetFBSReturnResultReturn struct {
 	// Time of receiving the return from the customer
 	AcceptedFromCustomerAmount string `json:"accepted_from_customer_amount"`
 
@@ -168,7 +172,10 @@ type GetFBSReturnsResponse struct {
 	// Commission percentage
 	CommissionPercent float64 `json:"commission_percent"`
 
-			// Return identifier
+	// Product item identifier in the Ozon logistics system
+	ExemplarId int64 `json:"exemplar_id"`
+
+	// Return identifier in the Ozon accounting system
 	Id int64 `json:"id"`
 
 	// If the product is in transit — true
@@ -192,6 +199,8 @@ type GetFBSReturnsResponse struct {
 	// Shipment number
 	PostingNumber string `json:"posting_number"`
 
+	PickingTag string `json:"picking_tag"`
+
 	// Current product price without a discount
 	Price float64 `json:"price"`
 
@@ -207,6 +216,12 @@ type GetFBSReturnsResponse struct {
 	// Product quantity
 	Quantity int64 `json:"quantity"`
 
+	// Barcode on the return label. Use this parameter value to work with the return label
+	ReturnBarcode string `json:"return_barcode"`
+
+	// Package unit identifier in the Ozon logistics system
+	ReturnClearingId int64 `json:"return_clearing_id"`
+
 	// Product return date
 	ReturnDate string `json:"return_date"`
 
@@ -230,17 +245,15 @@ type GetFBSReturnsResponse struct {
 
 	// Return status
 	Status string `json:"status"`
-		} `json:"returns"`
-	} `json:"result"`
 }
 
 // Method for getting information on returned products that are sold from the seller's warehouse
-func (c Returns) GetFBSReturns(params *GetFBSReturnsParams) (*GetFBSReturnsResponse, error) {
+func (c Returns) GetFBSReturns(ctx context.Context, params *GetFBSReturnsParams) (*GetFBSReturnsResponse, error) {
-	url := "/v2/returns/company/fbs"
+	url := "/v3/returns/company/fbs"
 
 	resp := &GetFBSReturnsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/returns_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -61,7 +62,8 @@ func TestGetFBOReturns(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Returns().GetFBOReturns(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Returns().GetFBOReturns(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -105,42 +107,43 @@ func TestGetFBSReturns(t *testing.T) {
 					Status:        "returned_to_seller",
 				},
 				Limit:  1000,
-				Offset: 0,
+				LastId: 0,
 			},
 			`{
-				"result": {
+				"last_id": 0,
 				"returns": [
 				  {
-					  "id": 19166541735000,
+					"accepted_from_customer_moment": "string",
-					  "clearing_id": 19166541725000,
+					"clearing_id": 23,
-					  "posting_number": "07402477-0022-2",
+					"commission": 21,
-					  "product_id": 172423678,
-					  "sku": 172423678,
-					  "status": "returned_to_seller",
-					  "returns_keeping_cost": 0,
-					  "return_reason_name": "5.12 Заказ более не актуален: долгие сроки доставки",
-					  "return_date": "2020-08-12T17:27:50+00:00",
-					  "quantity": 1,
-					  "product_name": "Кофе ароматизированный \"Лесной орех\" 250 гр",
-					  "price": 294,
-					  "waiting_for_seller_date_time": "2020-08-16T02:50:35+00:00",
-					  "returned_to_seller_date_time": "2020-08-21T10:07:13+00:00",
-					  "last_free_waiting_day": "2020-08-19T23:59:59+00:00",
-					  "is_opened": false,
-					  "place_id": 0,
 					"commission_percent": 0,
-					  "commission": 0,
+					"exemplar_id": 42,
+					"id": 123,
+					"is_moving": true,
+					"is_opened": true,
+					"last_free_waiting_day": "string",
+					"place_id": 122,
+					"moving_to_place_name": "string",
+					"picking_amount": 0,
+					"posting_number": "string",
+					"picking_tag": "string",
+					"price": 0,
 					"price_without_commission": 0,
-					  "is_moving": false,
+					"product_id": 2222,
-					  "moving_to_place_name": "МОСКВА_ХАБ",
+					"product_name": "string",
-					  "waiting_for_seller_days": 2,
+					"quantity": 0,
-					  "picking_amount": null,
+					"return_barcode": "string",
-					  "accepted_from_customer_moment": null,
+					"return_clearing_id": 0,
-					  "picking_tag": null
+					"return_date": "string",
-					}
+					"return_reason_name": "string",
-				  ],
+					"waiting_for_seller_date_time": "string",
-				  "count": 1
+					"returned_to_seller_date_time": "string",
+					"waiting_for_seller_days": 0,
+					"returns_keeping_cost": 0,
+					"sku": 33332,
+					"status": "string"
 				  }
+				]
 			}`,
 		},
 		// Test No Client-Id or Api-Key
@@ -158,7 +161,8 @@ func TestGetFBSReturns(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Returns().GetFBSReturns(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Returns().GetFBSReturns(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -168,20 +172,17 @@ func TestGetFBSReturns(t *testing.T) {
 		}
 
 		if resp.StatusCode == http.StatusOK {
-			if int(resp.Result.Count) != len(resp.Result.Returns) {
+			if len(resp.Returns) > 0 {
-				t.Errorf("Count must equal to length of returns")
+				if resp.Returns[0].Id == 0 {
-			}
-			if len(resp.Result.Returns) > 0 {
-				if resp.Result.Returns[0].Id == 0 {
 					t.Errorf("Id cannot be 0")
 				}
-				if resp.Result.Returns[0].ProductId == 0 {
+				if resp.Returns[0].ProductId == 0 {
 					t.Errorf("Product id cannot be 0")
 				}
-				if resp.Result.Returns[0].SKU == 0 {
+				if resp.Returns[0].SKU == 0 {
 					t.Errorf("SKU cannot be 0")
 				}
-				if resp.Result.Returns[0].Status == "" {
+				if resp.Returns[0].Status == "" {
 					t.Errorf("Status cannot be empty")
 				}
 			}

ozon/strategies.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 
 	core "github.com/diphantxm/ozon-api-client"
@@ -11,29 +12,39 @@ type Strategies struct {
 }
 
 type ListCompetitorsParams struct {
+	// Page number from which you want to download the list of competitors.
+	// The minimum value is 1
 	Page int64 `json:"page"`
 
+	// Maximum number of competitors on the page. Allowed values: 1–50
 	Limit int64 `json:"limit"`
 }
 
 type ListCompetitorsResponse struct {
 	core.CommonResponse
 
-	Competitors []struct {
+	// List of competitors
-		Name string `json:"name"`
+	Competitors []ListCompetitorsCompetitor `json:"competitors"`
-
-		Id int64 `json:"id"`
-	} `json:"competitors"`
 
+	// Total number of competitors
 	Total int32 `json:"total"`
 }
 
-func (c Strategies) ListCompetitors(params *ListCompetitorsParams) (*ListCompetitorsResponse, error) {
+type ListCompetitorsCompetitor struct {
+	// Competitor's name
+	Name string `json:"name"`
+
+	// Competitor identifier
+	Id int64 `json:"id"`
+}
+
+// Method for getting a list of competitors—sellers with similar products in other online stores and marketplaces
+func (c Strategies) ListCompetitors(ctx context.Context, params *ListCompetitorsParams) (*ListCompetitorsResponse, error) {
 	url := "/v1/pricing-strategy/competitors/list"
 
 	resp := &ListCompetitorsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -43,41 +54,56 @@ func (c Strategies) ListCompetitors(params *ListCompetitorsParams) (*ListCompeti
 }
 
 type ListStrategiesParams struct {
+	// Page number from which you want to download the list of competitors.
+	// The minimum value is 1
 	Page int64 `json:"page"`
 
+	// Maximum number of competitors on the page. Allowed values: 1–50
 	Limit int64 `json:"limit"`
 }
 
 type ListStrategiesResponse struct {
 	core.CommonResponse
 
-	Strategies []struct {
+	// List of strategies
-		Id string `json:"id"`
+	Strategies []ListStrategiesStrategy `json:"strategies"`
-
-		Name string `json:"name"`
-
-		Type StrategyType `json:"type"`
-
-		UpdateType StrategyUpdateType `json:"update_type"`
-
-		UpdatedAt string `json:"updated_at"`
-
-		ProductsCount int64 `json:"products_count"`
-
-		CompetitorsCount int64 `json:"competitors_count"`
-
-		Enabled bool `json:"enabled"`
-	} `json:"strategies"`
 
+	// Total number of strategies
 	Total int32 `json:"total"`
 }
 
-func (c Strategies) List(params *ListStrategiesParams) (*ListStrategiesResponse, error) {
+type ListStrategiesStrategy struct {
+	// Strategy identifier
+	Id string `json:"id"`
+
+	// Strategy name
+	Name string `json:"name"`
+
+	// Strategy type
+	Type StrategyType `json:"type"`
+
+	// Type of the last strategy change
+	UpdateType StrategyUpdateType `json:"update_type"`
+
+	// Date of last change
+	UpdatedAt string `json:"updated_at"`
+
+	// Number of products in the strategy
+	ProductsCount int64 `json:"products_count"`
+
+	// Number of selected competitors
+	CompetitorsCount int64 `json:"competitors_count"`
+
+	// Strategy status
+	Enabled bool `json:"enabled"`
+}
+
+func (c Strategies) List(ctx context.Context, params *ListStrategiesParams) (*ListStrategiesResponse, error) {
 	url := "/v1/pricing-strategy/list"
 
 	resp := &ListStrategiesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -87,31 +113,40 @@ func (c Strategies) List(params *ListStrategiesParams) (*ListStrategiesResponse,
 }
 
 type CreateStrategyParams struct {
+	// List of competitors
 	Competitors []CreateStrategyCompetitor `json:"competitors"`
 
+	// Strategy name
 	StrategyName string `json:"strategy_name"`
 }
 
 type CreateStrategyCompetitor struct {
+	// Coefficient by which the minimum price among competitors will be multiplied.
+	// The allowed range is from 0.5 to 1.2
 	Coefficient float32 `json:"coefficient"`
 
+	// Competitor identifier
 	CompetitorId int64 `json:"competitor_id"`
 }
 
 type CreateStrategyResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		StrategyId string `json:"strategy_id"`
+	Result CreateStrategyResult `json:"result"`
-	} `json:"result"`
 }
 
-func (c Strategies) Create(params *CreateStrategyParams) (*CreateStrategyResponse, error) {
+type CreateStrategyResult struct {
+	// Strategy identifier
+	StrategyId string `json:"strategy_id"`
+}
+
+func (c Strategies) Create(ctx context.Context, params *CreateStrategyParams) (*CreateStrategyResponse, error) {
 	url := "/v1/pricing-strategy/create"
 
 	resp := &CreateStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -121,31 +156,40 @@ func (c Strategies) Create(params *CreateStrategyParams) (*CreateStrategyRespons
 }
 
 type InfoStrategyParams struct {
+	// Strategy identifier
 	StrategyId string `json:"strategy_id"`
 }
 
 type InfoStrategyResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		Competitors []CreateStrategyCompetitor `json:"competitors"`
+	Result InfoStrategyResult `json:"result"`
-
-		Enabled bool `json:"enabled"`
-
-		Name string `json:"name"`
-
-		Type StrategyType `json:"type"`
-
-		UpdateType StrategyUpdateType `json:"update_type"`
-	} `json:"result"`
 }
 
-func (c Strategies) Info(params *InfoStrategyParams) (*InfoStrategyResponse, error) {
+type InfoStrategyResult struct {
+	// List of competitors
+	Competitors []CreateStrategyCompetitor `json:"competitors"`
+
+	// Strategy status
+	Enabled bool `json:"enabled"`
+
+	// Strategy name
+	Name string `json:"name"`
+
+	// Strategy type
+	Type StrategyType `json:"type"`
+
+	// Type of the last strategy change
+	UpdateType StrategyUpdateType `json:"update_type"`
+}
+
+func (c Strategies) Info(ctx context.Context, params *InfoStrategyParams) (*InfoStrategyResponse, error) {
 	url := "/v1/pricing-strategy/info"
 
 	resp := &InfoStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -155,10 +199,13 @@ func (c Strategies) Info(params *InfoStrategyParams) (*InfoStrategyResponse, err
 }
 
 type UpdateStrategyParams struct {
+	// List of competitors
 	Competitors []CreateStrategyCompetitor `json:"competitors"`
 
+	// Product identifier
 	StrategyId string `json:"strategy_id"`
 
+	// Strategy name
 	StrategyName string `json:"strategy_name"`
 }
 
@@ -166,12 +213,12 @@ type UpdateStrategyResponse struct {
 	core.CommonResponse
 }
 
-func (c Strategies) Update(params *UpdateStrategyParams) (*UpdateStrategyResponse, error) {
+func (c Strategies) Update(ctx context.Context, params *UpdateStrategyParams) (*UpdateStrategyResponse, error) {
 	url := "/v1/pricing-strategy/update"
 
 	resp := &UpdateStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -181,33 +228,45 @@ func (c Strategies) Update(params *UpdateStrategyParams) (*UpdateStrategyRespons
 }
 
 type AddProductsToStrategyParams struct {
+	// List of product identifiers. The maximum number is 50
 	ProductId []int64 `json:"product_id"`
 
+	// Product identifier
 	StrategyId string `json:"strategy_id"`
 }
 
 type AddProductsToStrategyResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		Errors []struct {
+	Result AddProductsToStrategyResult `json:"result"`
-			Code string `json:"code"`
-
-			Error string `json:"error"`
-
-			ProductId int64 `json:"product_id"`
-		} `json:"errors"`
-
-		FailedProductCount int32 `json:"failed_product_count"`
-	} `json:"result"`
 }
 
-func (c Strategies) AddProducts(params *AddProductsToStrategyParams) (*AddProductsToStrategyResponse, error) {
+type AddProductsToStrategyResult struct {
+	// Products with errors
+	Errors []AddProductsToStrategyResultError `json:"errors"`
+
+	// Number of products with errors
+	FailedProductCount int32 `json:"failed_product_count"`
+}
+
+type AddProductsToStrategyResultError struct {
+	// Error code
+	Code string `json:"code"`
+
+	// Error message
+	Error string `json:"error"`
+
+	// Product identifier
+	ProductId int64 `json:"product_id"`
+}
+
+func (c Strategies) AddProducts(ctx context.Context, params *AddProductsToStrategyParams) (*AddProductsToStrategyResponse, error) {
 	url := "/v1/pricing-strategy/products/add"
 
 	resp := &AddProductsToStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -217,27 +276,36 @@ func (c Strategies) AddProducts(params *AddProductsToStrategyParams) (*AddProduc
 }
 
 type GetStrategiesByProductIdsParams struct {
+	// List of product identifiers. The maximum number is 50
 	ProductId []int64 `json:"product_id"`
 }
 
 type GetStrategiesByProductIdsResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		ProductsInfo []struct {
+	Result GetStrategiesByProductIdsResult `json:"result"`
-			ProductId int64 `json:"product_id"`
-
-			StrategyId string `json:"strategy_id"`
-		} `json:"products_info"`
-	} `json:"result"`
 }
 
-func (c Strategies) GetByProductIds(params *GetStrategiesByProductIdsParams) (*GetStrategiesByProductIdsResponse, error) {
+type GetStrategiesByProductIdsResult struct {
+	// Product information
+	ProductsInfo []GetStrategiesByProductIdsResultProductInfo `json:"products_info"`
+}
+
+type GetStrategiesByProductIdsResultProductInfo struct {
+	// Product identifier
+	ProductId int64 `json:"product_id"`
+
+	// Strategy identifier to which the product is bounded
+	StrategyId string `json:"strategy_id"`
+}
+
+func (c Strategies) GetByProductIds(ctx context.Context, params *GetStrategiesByProductIdsParams) (*GetStrategiesByProductIdsResponse, error) {
 	url := "/v1/pricing-strategy/strategy-ids-by-product-ids"
 
 	resp := &GetStrategiesByProductIdsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -247,23 +315,28 @@ func (c Strategies) GetByProductIds(params *GetStrategiesByProductIdsParams) (*G
 }
 
 type ListProductsInStrategyParams struct {
+	// Strategy identifier
 	StrategyId string `json:"strategy_id"`
 }
 
 type ListProductsInStrategyResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		ProductId []string `json:"product_id"`
+	Result ListProductsInStrategyResult `json:"result"`
-	} `json:"result"`
 }
 
-func (c Strategies) ListProducts(params *ListProductsInStrategyParams) (*ListProductsInStrategyResponse, error) {
+type ListProductsInStrategyResult struct {
+	// Product identifier
+	ProductId []string `json:"product_id"`
+}
+
+func (c Strategies) ListProducts(ctx context.Context, params *ListProductsInStrategyParams) (*ListProductsInStrategyResponse, error) {
 	url := "/v1/pricing-strategy/products/list"
 
 	resp := &ListProductsInStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -273,33 +346,43 @@ func (c Strategies) ListProducts(params *ListProductsInStrategyParams) (*ListPro
 }
 
 type GetCompetitorPriceParams struct {
+	// Product identifier
 	ProductId int64 `json:"product_id"`
 }
 
 type GetCompetitorPriceResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		StrategyId string `json:"strategy_id"`
+	Result GetCompetitorPriceResult `json:"result"`
-
-		IsEnabled bool `json:"is_enabled"`
-
-		StrategyProductPrice int32 `json:"strategy_product_price"`
-
-		PriceDownloadedAt string `json:"price_downloaded_at"`
-
-		StrategyCompetitorId int64 `json:"strategy_competitor_id"`
-
-		StrategyCompetitorProductURL string `json:"strategy_competitor_product_url"`
-	} `json:"result"`
 }
 
-func (c Strategies) GetCompetitorPrice(params *GetCompetitorPriceParams) (*GetCompetitorPriceResponse, error) {
+type GetCompetitorPriceResult struct {
+	// Product identifier
+	StrategyId string `json:"strategy_id"`
+
+	// true if the product is in the pricing strategy
+	IsEnabled bool `json:"is_enabled"`
+
+	// Price of product in the strategy
+	StrategyProductPrice int32 `json:"strategy_product_price"`
+
+	// Price setting date
+	PriceDownloadedAt string `json:"price_downloaded_at"`
+
+	// Competitor identifier
+	StrategyCompetitorId int64 `json:"strategy_competitor_id"`
+
+	// Link to a competitor's product
+	StrategyCompetitorProductURL string `json:"strategy_competitor_product_url"`
+}
+
+func (c Strategies) GetCompetitorPrice(ctx context.Context, params *GetCompetitorPriceParams) (*GetCompetitorPriceResponse, error) {
 	url := "/v1/pricing-strategy/product/info"
 
 	resp := &GetCompetitorPriceResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -309,23 +392,28 @@ func (c Strategies) GetCompetitorPrice(params *GetCompetitorPriceParams) (*GetCo
 }
 
 type RemoveProductsFromStrategyParams struct {
+	// List of product identifiers. The maximum number is 50
 	ProductId []int64 `json:"product_id"`
 }
 
 type RemoveProductsFromStrategyResponse struct {
 	core.CommonResponse
 
-	Result struct {
+	// Method result
-		FailedProductCount int32 `json:"failed_product_count"`
+	Result RemoveProductsFromStrategyResult `json:"result"`
-	} `json:"result"`
 }
 
-func (c Strategies) RemoveProducts(params *RemoveProductsFromStrategyParams) (*RemoveProductsFromStrategyResponse, error) {
+type RemoveProductsFromStrategyResult struct {
+	// Number of products with errors
+	FailedProductCount int32 `json:"failed_product_count"`
+}
+
+func (c Strategies) RemoveProducts(ctx context.Context, params *RemoveProductsFromStrategyParams) (*RemoveProductsFromStrategyResponse, error) {
 	url := "/v1/pricing-strategy/products/delete"
 
 	resp := &RemoveProductsFromStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -335,8 +423,10 @@ func (c Strategies) RemoveProducts(params *RemoveProductsFromStrategyParams) (*R
 }
 
 type ChangeStrategyStatusParams struct {
+	// Strategy status
 	Enabled bool `json:"enabled"`
 
+	// Product identifier
 	StrategyId string `json:"strategy_id"`
 }
 
@@ -344,12 +434,12 @@ type ChangeStrategyStatusResponse struct {
 	core.CommonResponse
 }
 
-func (c Strategies) ChangeStatus(params *ChangeStrategyStatusParams) (*ChangeStrategyStatusResponse, error) {
+func (c Strategies) ChangeStatus(ctx context.Context, params *ChangeStrategyStatusParams) (*ChangeStrategyStatusResponse, error) {
 	url := "/v1/pricing-strategy/status"
 
 	resp := &ChangeStrategyStatusResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -359,6 +449,7 @@ func (c Strategies) ChangeStatus(params *ChangeStrategyStatusParams) (*ChangeStr
 }
 
 type RemoveStrategyParams struct {
+	// Strategy identifier
 	StrategyId string `json:"strategy_id"`
 }
 
@@ -366,12 +457,12 @@ type RemoveStrategyResponse struct {
 	core.CommonResponse
 }
 
-func (c Strategies) Remove(params *RemoveStrategyParams) (*RemoveStrategyResponse, error) {
+func (c Strategies) Remove(ctx context.Context, params *RemoveStrategyParams) (*RemoveStrategyResponse, error) {
 	url := "/v1/pricing-strategy/delete"
 
 	resp := &RemoveStrategyResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, params, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, params, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/strategies_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -49,7 +50,8 @@ func TestListCompetitors(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().ListCompetitors(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().ListCompetitors(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -108,7 +110,8 @@ func TestListStrategies(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().List(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().List(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -174,7 +177,8 @@ func TestCreateStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().Create(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().Create(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -235,7 +239,8 @@ func TestInfoStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().Info(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().Info(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -302,7 +307,8 @@ func TestUpdateStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().Update(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().Update(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -351,7 +357,8 @@ func TestAddProductsToStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().AddProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().AddProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -404,7 +411,8 @@ func TestGetStrategiesByProductIds(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().GetByProductIds(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().GetByProductIds(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -466,7 +474,8 @@ func TestListProductsInStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().ListProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().ListProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -519,7 +528,8 @@ func TestGetCompetitorPrice(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().GetCompetitorPrice(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().GetCompetitorPrice(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -567,7 +577,8 @@ func TestRemoveProductsFromStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().RemoveProducts(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().RemoveProducts(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -612,7 +623,8 @@ func TestChangeStrategyStatus(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().ChangeStatus(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().ChangeStatus(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}
@@ -656,7 +668,8 @@ func TestRemoveStrategy(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Strategies().Remove(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Strategies().Remove(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}

ozon/warehouses.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"time"
 
@@ -14,7 +15,10 @@ type Warehouses struct {
 type GetListOfWarehousesResponse struct {
 	core.CommonResponse
 
-	Result []struct {
+	Result []GetListOfWarehousesResult `json:"result"`
+}
+
+type GetListOfWarehousesResult struct {
 	// Trusted acceptance attribute. `true` if trusted acceptance is enabled in the warehouse
 	HasEntrustedAcceptance bool `json:"has_entrusted_acceptance"`
 
@@ -33,23 +37,7 @@ type GetListOfWarehousesResponse struct {
 	CanPrintActInAdvance bool `json:"can_print_act_in_advance"`
 
 	// FBS first mile
-		FirstMileType struct {
+	FirstMileType GetListOfWarehousesResultFirstMile `json:"first_mile_type"`
-			// DropOff point identifier
-			DropoffPointId string `json:"dropoff_point_id"`
-
-			// DropOff timeslot identifier
-			DropoffTimeslotId int64 `json:"dropoff_timeslot_id"`
-
-			// Indication that the warehouse settings are being updated
-			FirstMileIsChanging bool `json:"first_mile_is_changing"`
-
-			// First mile type:
-			//
-			// Enum: "DropOff" "Pickup"
-			//   - DropOff
-			//   - Pickup
-			FirstMileType string `json:"first_mile_type"`
-		} `json:"first_mile_type"`
 
 	// Indication if there is a limit on the minimum number of orders. `true` if there is such a limit
 	HasPostingsLimit bool `json:"has_postings_limit"`
@@ -77,16 +65,33 @@ type GetListOfWarehousesResponse struct {
 
 	// Warehouse working days
 	WorkingDays []WorkingDay `json:"working_days"`
-	} `json:"resulCommonResponse"`
+}
+
+type GetListOfWarehousesResultFirstMile struct {
+	// DropOff point identifier
+	DropoffPointId string `json:"dropoff_point_id"`
+
+	// DropOff timeslot identifier
+	DropoffTimeslotId int64 `json:"dropoff_timeslot_id"`
+
+	// Indication that the warehouse settings are being updated
+	FirstMileIsChanging bool `json:"first_mile_is_changing"`
+
+	// First mile type:
+	//
+	// Enum: "DropOff" "Pickup"
+	//   - DropOff
+	//   - Pickup
+	FirstMileType string `json:"first_mile_type"`
 }
 
 // You do not need to specify any parameters in the request. Your company will be identified by the Warehouses ID
-func (c Warehouses) GetListOfWarehouses() (*GetListOfWarehousesResponse, error) {
+func (c Warehouses) GetListOfWarehouses(ctx context.Context) (*GetListOfWarehousesResponse, error) {
 	url := "/v1/warehouse/list"
 
 	resp := &GetListOfWarehousesResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -131,7 +136,10 @@ type GetListOfDeliveryMethodsResponse struct {
 	HasNext bool `json:"has_next"`
 
 	// Method result
-	Result []struct {
+	Result []GetListOfDeliveryMethodsResult `json:"result"`
+}
+
+type GetListOfDeliveryMethodsResult struct {
 	// Company identifier
 	CompanyId int64 `json:"company_id"`
 
@@ -165,16 +173,15 @@ type GetListOfDeliveryMethodsResponse struct {
 
 	// Warehouse identifier
 	WarehouseId int64 `json:"warehouse_id"`
-	} `json:"result"`
 }
 
 // This methods allows you to get list of all delivery methods that can be applied for this warehouse
-func (c Warehouses) GetListOfDeliveryMethods(params *GetListOfDeliveryMethodsParams) (*GetListOfDeliveryMethodsResponse, error) {
+func (c Warehouses) GetListOfDeliveryMethods(ctx context.Context, params *GetListOfDeliveryMethodsParams) (*GetListOfDeliveryMethodsResponse, error) {
 	url := "/v1/delivery-method/list"
 
 	resp := &GetListOfDeliveryMethodsResponse{}
 
-	response, err := c.client.Request(http.MethodPost, url, nil, resp, nil)
+	response, err := c.client.Request(ctx, http.MethodPost, url, nil, resp, nil)
 	if err != nil {
 		return nil, err
 	}

ozon/warehouses_test.go

@@ -1,6 +1,7 @@
 package ozon
 
 import (
+	"context"
 	"net/http"
 	"testing"
 
@@ -58,7 +59,8 @@ func TestGetListOfWarehouses(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Warehouses().GetListOfWarehouses()
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Warehouses().GetListOfWarehouses(ctx)
 		if err != nil {
 			t.Error(err)
 		}
@@ -133,7 +135,8 @@ func TestGetListOfDeliveryMethods(t *testing.T) {
 	for _, test := range tests {
 		c := NewMockClient(core.NewMockHttpHandler(test.statusCode, test.response, test.headers))
 
-		resp, err := c.Warehouses().GetListOfDeliveryMethods(test.params)
+		ctx, _ := context.WithTimeout(context.Background(), testTimeout)
+		resp, err := c.Warehouses().GetListOfDeliveryMethods(ctx, test.params)
 		if err != nil {
 			t.Error(err)
 		}