From c32aee50dc9445fa8e24d624487f72c7cabf1c64 Mon Sep 17 00:00:00 2001
From: LeonG11 <kkacanov198@gmail.com>
Date: Tue, 23 Jun 2026 11:12:47 +0300
Subject: [PATCH] feat: add route order

---
 backend/handlers/cart_handler.go  |  5 +-
 backend/handlers/order_handler.go | 85 +++++++++++++++++++++++++++++++
 backend/main.go                   |  1 +
 3 files changed, 89 insertions(+), 2 deletions(-)
 create mode 100644 backend/handlers/order_handler.go

diff --git a/backend/handlers/cart_handler.go b/backend/handlers/cart_handler.go
index bda9daf..57f347f 100644
--- a/backend/handlers/cart_handler.go
+++ b/backend/handlers/cart_handler.go
@@ -10,8 +10,9 @@ import (
 )
 
 func getUserID(c *gin.Context) uint {
-	userID, _ := c.Get("user_id")
-	return userID.(uint)
+	val, _ := c.Get("user_id")
+	userID, _ := val.(uint)
+	return userID
 }
 
 func GetCart(c *gin.Context) {
diff --git a/backend/handlers/order_handler.go b/backend/handlers/order_handler.go
new file mode 100644
index 0000000..a892f87
--- /dev/null
+++ b/backend/handlers/order_handler.go
@@ -0,0 +1,85 @@
+package handlers
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"gorm.io/gorm"
+
+	"fishfish/database"
+	"fishfish/models"
+)
+
+func CreateOrder(c *gin.Context) {
+	userID := getUserID(c)
+
+	var req struct {
+		DeliveryAddress string `json:"delivery_address" binding:"required"`
+	}
+
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Не указан адрес доставки"})
+		return
+	}
+
+	var cartItems []models.CartItem
+	if err := database.DB.Preload("Item").Where("user_id = ? ", userID).Find(&cartItems).Error; err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Не удалось получить корзину"})
+		return
+	}
+
+	if len(cartItems) == 0 {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "Корзина пуста"})
+		return
+	}
+
+	var order models.Order
+	err := database.DB.Transaction(func(tx *gorm.DB) error {
+		var total float64
+		var orderItems []models.OrderItem
+
+		for _, cartItem := range cartItems {
+			item := cartItem.Item
+
+			result := tx.Model(&models.Item{}).Where("id = ? AND stock >= ?", item.ID, cartItem.Quantity).Update("stock", gorm.Expr("stock - ? ", cartItem.Quantity))
+
+			if result.RowsAffected == 0 {
+				return fmt.Errorf("Недостаточно товара '%s' на складе", item.Name)
+			}
+
+			itemTotal := float64(item.Price) * cartItem.Quantity
+			total += itemTotal
+
+			orderItems = append(orderItems, models.OrderItem{
+				ItemID:   cartItem.ItemID,
+				Quantity: cartItem.Quantity,
+				Price:    float64(item.Price),
+			})
+		}
+
+		order = models.Order{
+			UserID:          userID,
+			Status:          "new",
+			DeliveryAddress: req.DeliveryAddress,
+			TotalPrice:      total,
+			Items:           orderItems,
+		}
+
+		if err := tx.Create(&order).Error; err != nil {
+			return err
+		}
+
+		if err := tx.Where("user_id = ? ", userID).Delete(&models.CartItem{}).Error; err != nil {
+			return err
+		}
+
+		return nil
+	})
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusCreated, order)
+}
diff --git a/backend/main.go b/backend/main.go
index c4a2f2b..4c0c785 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -52,6 +52,7 @@ func main() {
 			protected.POST("/cart/", handlers.AddToCart)
 			protected.PATCH("/cart/:id", handlers.UpdateCartItem)
 			protected.DELETE("/cart/:id", handlers.RemoveFromCart)
+			protected.POST("/orders/", handlers.CreateOrder)
 		}
 
 		admin := protected.Group("/")