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package controllers
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import (
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"golang-test/database"
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"golang-test/libs"
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"golang-test/types"
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"golang-test/validators"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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"github.com/go-playground/validator/v10"
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)
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// CreateProduct создает новый продукт в базе данных.
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func CreateProduct(c *gin.Context, product database.Product) {
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db := database.Connector()
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validate := validators.Validate
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// Проверка данных продукта.
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if err := validate.Struct(&product); err != nil {
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c.JSON(http.StatusBadRequest, libs.GetValidationErrors(err.(validator.ValidationErrors)))
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return
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}
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// Проверка существования производителя.
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var manufacturer *database.Manufacturer
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if err := db.First(&manufacturer, product.ManufacturerID).Error; err != nil {
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c.JSON(http.StatusBadRequest, types.NotFoundError("Product", product.ManufacturerID))
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return
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}
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// Добавление продукта в базу данных.
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if err := db.Create(&product).Error; err != nil {
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c.JSON(http.StatusBadRequest, types.ErrorResponse{Message: err.Error()})
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return
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}
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// Отправка ответа о успешном создании продукта.
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c.JSON(http.StatusCreated, types.MessageResponse{Message: "Product created"})
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}
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// DeleteProduct удаляет продукт по ID.
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func DeleteProduct(c *gin.Context) {
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db := database.Connector()
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id := c.Param("id")
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var product database.Product
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// Проверка существования продукта перед удалением.
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if db.First(&product, id).Error != nil {
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c.JSON(http.StatusNotFound, types.NotFoundError("Product", id))
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return
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}
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// Удаление продукта из базы данных.
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if err := db.Delete(&product, id).Error; err != nil {
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c.JSON(http.StatusInternalServerError, types.ErrorResponse{Message: err.Error()})
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return
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}
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// Отправка ответа о успешном удалении.
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c.JSON(http.StatusOK, types.MessageResponse{Message: "Product deleted"})
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}
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// GetProducts возвращает список всех продуктов.
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func GetProducts(c *gin.Context) {
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db := database.Connector()
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var products []database.Product
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var productResp []types.ProductResponse
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// Получение продуктов из базы данных.
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if err := db.Preload("Manufacturer").Find(&products).Scan(&productResp).Error; err != nil {
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c.JSON(http.StatusInternalServerError, types.ErrorResponse{Message: err.Error()})
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return
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}
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// Добавление информации о производителе к каждому продукту.
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for i, element := range productResp {
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var manufacturer types.ManufacturerResponse
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db.First(&database.Manufacturer{}, element.ManufacturerID).Scan(&manufacturer)
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productResp[i].Manufacturer = manufacturer
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}
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// Отправка списка продуктов.
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c.JSON(http.StatusOK, productResp)
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}
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// GetProductInfo возвращает информацию о продукте по ID.
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func GetProductInfo(c *gin.Context) {
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db := database.Connector()
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var product database.Product
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var productResp types.ProductResponse
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id, err := strconv.Atoi(c.Param("id"))
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if err != nil {
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c.JSON(http.StatusBadRequest, types.ErrorResponse{Message: err.Error()})
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return
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}
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// Получение продукта из базы данных.
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if err := db.Preload("Manufacturer").First(&product, id).Scan(&productResp).Error; err != nil {
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c.JSON(http.StatusBadRequest, types.NotFoundError("Product", id))
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return
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}
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// Добавление информации о производителе в ответ.
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productResp.Manufacturer = types.ManufacturerResponse{
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Name: product.Manufacturer.Name,
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ID: product.Manufacturer.ID,
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}
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// Отправка информации о продукте.
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c.JSON(http.StatusOK, productResp)
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}
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