package ozon

import (
	"net/http"
	"time"

	core "github.com/diphantxm/ozon-api-client"
)

type Reports struct {
	client *core.Client
}

type GetReportsListParams struct {
	// Page number
	Page int32 `json:"page"`

	// The number of values on the page:
	//   - default value is 100,
	//   - maximum value is 1000
	PageSize int32 `json:"page_size"`

	// Default: "ALL"
	// Report type:
	//   - ALL — all reports,
	//   - SELLER_PRODUCTS — products report,,
	//   - SELLER_TRANSACTIONS — transactions report,
	//   - SELLER_PRODUCT_PRICES — product prices report,
	//   - SELLER_STOCK — stocks report,
	//   - SELLER_PRODUCT_MOVEMENT — products movement report,
	//   - SELLER_RETURNS — returns report,
	//   - SELLER_POSTINGS — shipments report,
	//   - SELLER_FINANCE — financial report
	ReportType string `json:"report_type"`
}

type GetReportsListResponse struct {
	core.CommonResponse

	// Method result
	Result struct {
		// Unique report identifier
		Code string `json:"code"`

		// Report creation date
		CreatedAt time.Time `json:"created_at"`

		// Error code when generating the report
		Error string `json:"error"`

		// Link to CSV file
		File string `json:"file"`

		// Array with the filters specified when the seller created the report
		Params struct {
		} `json:"params"`

		// Report type:
		//   - SELLER_PRODUCTS — products report,
		//   - SELLER_TRANSACTIONS — transactions report,
		//   - SELLER_PRODUCT_PRICES — product prices report,
		//   - SELLER_STOCK — stocks report,
		//   - SELLER_PRODUCT_MOVEMENT — products movement report,
		//   - SELLER_RETURNS — returns report,
		//   - SELLER_POSTINGS — shipments report,
		//   - SELLER_FINANCE — financial report
		ReportType string `json:"report_type"`

		// Report generation status
		//   - `success`
		//   - `failed`
		Status string `json:"status"`
	} `json:"result"`

	// Total number of reports
	Total int32 `json:"total"`
}

// Returns the list of reports that have been generated before
func (c Reports) GetList(params *GetReportsListParams) (*GetReportsListResponse, error) {
	url := "/v1/report/list"

	resp := &GetReportsListResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetReportDetailsParams struct {
	// Unique report identifier
	Code string `json:"code"`
}

type GetReportDetailsResponse struct {
	core.CommonResponse

	// Report details
	Result struct {
		// Unique report identifier
		Code string `json:"code"`

		// Report creation date
		CreatedAt time.Time `json:"created_at"`

		// Error code when generating the report
		Error string `json:"error"`

		// Link to CSV file
		File string `json:"file"`

		// Array with the filters specified when the seller created the report
		Params map[string]string `json:"params"`

		// Report type:
		//   - SELLER_PRODUCTS — products report,
		//   - SELLER_TRANSACTIONS — transactions report,
		//   - SELLER_PRODUCT_PRICES — product prices report,
		//   - SELLER_STOCK — stocks report,
		//   - SELLER_PRODUCT_MOVEMENT — products movement report,
		//   - SELLER_RETURNS — returns report,
		//   - SELLER_POSTINGS — shipments report,
		//   - SELLER_FINANCE — financial report
		ReportType string `json:"report_type"`

		// Report generation status:
		//   - 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) {
	url := "/v1/report/list"

	resp := &GetReportDetailsResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetFinancialReportParams struct {
	// Report generation period
	Date GetFinancialReportDatePeriod `json:"date"`

	// Number of the page returned in the request
	Page int64 `json:"page"`

	// Number of items on the page
	PageSize int64 `json:"page_size"`
}

type GetFinancialReportDatePeriod struct {
	// Date from which the report is calculated
	From time.Time `json:"from"`

	// Date up to which the report is calculated
	To time.Time `json:"to"`
}

type GetFinancialReportResponse struct {
	core.CommonResponse

	// Method result
	Result struct {
		// Reports list
		CashFlows []struct {
			// Period data
			Period struct {
				// 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"`

			// Sum of returned products prices
			ReturnsAmount float64 `json:"returns_amount"`

			// Ozon sales commission
			CommissionAmount float64 `json:"commission_amount"`

			// Additional services cost
			ServicesAmount float64 `json:"services_amount"`

			// Logistic services cost
			ItemDeliveryAndReturnAmount float64 `json:"item_delivery_and_return_amount"`

			// Code of the currency used to calculate the commissions
			CurrencyCode string `json:"currency_code"`
		} `json:"cash_flows"`

		// 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) {
	url := "/v1/finance/cash-flow-statement/list"

	resp := &GetFinancialReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetProductsReportParams struct {
	// Default: "DEFAULT"
	// Response language:
	//   - RU — Russian
	//   - EN — English
	Language string `json:"language" default:"DEFAULT"`

	// Product identifier in the seller's system
	OfferId []string `json:"offer_id"`

	// Search by record content, checks for availability
	Search string `json:"search"`

	// Product identifier in the Ozon system, SKU
	SKU []int64 `json:"sku"`

	// Default: "ALL"
	// Filter by product visibility
	Visibility string `json:"visibility" default:"ALL"`
}

type GetProductsReportResponse struct {
	core.CommonResponse

	// Method result
	Result 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) {
	url := "/v1/report/products/create"

	resp := &GetProductsReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetStocksReportParams struct {
	// Default: "DEFAULT"
	// Response language:
	//   - RU — Russian
	//   - EN — English
	Language string `json:"language" default:"DEFAULT"`
}

type GetStocksReportResponse struct {
	core.CommonResponse

	// Method result
	Result 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) {
	url := "/v1/report/stock/create"

	resp := &GetStocksReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetProductsMovementReportParams struct {
	// Date from which the data will be in the report
	DateFrom time.Time `json:"date_from"`

	// Date up to which the data will be in the report
	DateTo time.Time `json:"date_to"`

	// Default: "DEFAULT"
	// Response language:
	//   - RU — Russian
	//   - EN — English
	Language string `json:"language" default:"DEFAULT"`
}

type GetProductsMovementReportResponse struct {
	core.CommonResponse

	// Method result
	Result 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:
//   - products with defects or in inventory,
//   - products in transit between the fulfillment centers,
//   - products in delivery,
//   - products to be sold
func (c Reports) GetProductsMovement(params *GetProductsMovementReportParams) (*GetProductsMovementReportResponse, error) {
	url := "/v1/report/products/movement/create"

	resp := &GetProductsMovementReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetReturnsReportParams struct {
	// Filter
	Filter GetReturnsReportsFilter `json:"filter"`

	// Default: "DEFAULT"
	// Response language:
	//   - RU — Russian
	//   - EN — English
	Language string `json:"language" default:"DEFAULT"`
}

type GetReturnsReportsFilter struct {
	// Order delivery scheme: fbs — delivery from seller's warehouse
	DeliverySchema string `json:"delivery_schema"`

	// Order identifier
	OrderId int64 `json:"order_id"`

	// Order status
	Status string `json:"status"`
}

type GetReturnsReportResponse struct {
	core.CommonResponse

	// Method result
	Result 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) {
	url := "/v1/report/returns/create"

	resp := &GetReturnsReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}

type GetShipmentReportParams struct {
	// Filter
	Filter GetShipmentReportFilter `json:"filter"`

	// Default: "DEFAULT"
	// Response language:
	//   - RU — Russian
	//   - EN — English
	Language string `json:"language"`
}

type GetShipmentReportFilter struct {
	// Cancellation reason identifier
	CancelReasonId []int64 `json:"cancel_reason_id"`

	// Work scheme: FBO or FBS.
	//
	// To get an FBO scheme report, pass fbo in this parameter. For an FBS scheme report pass fbs
	DeliverySchema []string `json:"delivery_schema"`

	// Product identifier
	OfferId string `json:"offer_id"`

	// Order processing start date and time
	ProcessedAtFrom time.Time `json:"processed_at_from"`

	// Time when the order appeared in your personal account
	ProcessedAtTo time.Time `json:"processed_at_to"`

	// Product identifier in the Ozon system, SKU
	SKU []int64 `json:"sku"`

	// Status text
	StatusAlias []string `json:"status_alias"`

	// Numerical status
	Statuses []int64 `json:"statused"`

	// Product name
	Title string `json:"title"`
}

type GetShipmentReportResponse struct {
	core.CommonResponse

	// Method result
	Result struct {
		// Unique report identifier
		Code string `json:"code"`
	} `json:"result"`
}

// Shipment report with orders details:
//   - order statuses
//   - processing start date
//   - order numbers
//   - shipment numbers
//   - shipment costs
//   - shipments contents
func (c Reports) GetShipment(params *GetShipmentReportParams) (*GetShipmentReportResponse, error) {
	url := "/v1/report/postings/create"

	resp := &GetShipmentReportResponse{}

	response, err := c.client.Request(http.MethodPost, url, params, resp)
	if err != nil {
		return nil, err
	}
	response.CopyCommonResponse(&resp.CommonResponse)

	return resp, nil
}