add method for adding product to promotion

ENDPOINTS.md

@@ -40,7 +40,7 @@
 - [x] Available promotions
 - [ ] Products that can participate in a promotion
 - [ ] Products in a promotion
-- [ ] Add products to promotion
+- [x] Add products to promotion
 - [ ] Remove products from promotion
 - [ ] List of available Hot Sale promotions
 - [ ] List of products participating in the Hot Sale promotion

ozon/promotions.go

@@ -69,6 +69,7 @@ type GetAvailablePromotionsResponse struct {
 	} `json:"result"`
 }
 
+// A method for getting a list of promotions that you can participate in
 func (c Promotions) GetAvailablePromotions() (*GetAvailablePromotionsResponse, error) {
 	url := "/v1/actions"
 
@@ -82,3 +83,56 @@ func (c Promotions) GetAvailablePromotions() (*GetAvailablePromotionsResponse, e
 
 	return resp, nil
 }
+
+type AddProductToPromotionParams struct {
+	// Promotion identifier
+	ActionId float64 `json:"action_id"`
+
+	// Products list
+	Products []AddProductToPromotionProduct `json:"products"`
+}
+
+type AddProductToPromotionProduct struct {
+	// Product identifier
+	ProductId float64 `json:"produt_id"`
+
+	// Promotional product price
+	ActionPrice float64 `json:"action_price"`
+
+	// Number of product units in a stock discount type promotion
+	Stock float64 `json:"stock"`
+}
+
+type AddProductToPromotionResponse struct {
+	core.CommonResponse
+
+	// Method result
+	Result 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 {
+			// 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) {
+	url := "/v1/actions/products/activate"
+
+	resp := &AddProductToPromotionResponse{}
+
+	response, err := c.client.Request(http.MethodGet, url, params, resp)
+	if err != nil {
+		return nil, err
+	}
+	response.CopyCommonResponse(&resp.CommonResponse)
+
+	return resp, nil
+}

ozon/promotions_test.go

@@ -64,3 +64,59 @@ func TestGetAvailablePromotions(t *testing.T) {
 		}
 	}
 }
+
+func TestAddToPromotion(t *testing.T) {
+	tests := []struct {
+		statusCode int
+		headers    map[string]string
+		params     *AddProductToPromotionParams
+		response   string
+	}{
+		// Test Ok
+		{
+			http.StatusOK,
+			map[string]string{"Client-Id": "my-client-id", "Api-Key": "my-api-key"},
+			&AddProductToPromotionParams{
+				ActionId: 60564,
+				Products: []AddProductToPromotionProduct{
+					{
+						ProductId:   1389,
+						ActionPrice: 356,
+						Stock:       10,
+					},
+				},
+			},
+			`{
+			"result": {
+				"product_ids": [
+						1389
+					],
+					"rejected": []
+				}
+			}`,
+		},
+		// Test No Client-Id or Api-Key
+		{
+			http.StatusUnauthorized,
+			map[string]string{},
+			&AddProductToPromotionParams{},
+			`{
+				"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))
+
+		resp, err := c.Promotions().AddToPromotion(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)
+		}
+	}
+}