1.0

2026-01-05 14:11:34 +08:00
parent 35ef825371
commit 99b11b04e4
658 changed files with 99266 additions and 0 deletions
@@ -0,0 +1,330 @@
+package handlers
+
+import (
+	"awesomeProject/internal/common"
+	"awesomeProject/internal/models"
+	"fmt"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/gin-gonic/gin"
+)
+
+// UserProductHandler 用户端商品处理器
+type UserProductHandler struct{}
+
+// GetHomeData 获取首页数据（轮播图、商品分类和一级商品）
+func (h *UserProductHandler) GetHomeData(c *gin.Context) {
+	db := common.GetDB()
+
+	// 获取启用的轮播图，按排序排列
+	var banners []models.Banner
+	err := db.Where("status = ?", 1).Order("sort_order ASC, created_at DESC").Find(&banners).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询轮播图失败"))
+		return
+	}
+
+	// 获取启用的商品分类，按排序排列
+	var categories []models.ProductCategory
+	err = db.Where("status = ?", 1).Order("sort_order ASC, created_at DESC").Find(&categories).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询商品分类失败"))
+		return
+	}
+
+	// 获取上架的一级商品，按排序排列，限制数量
+	var primaryProducts []models.PrimaryProduct
+	err = db.Where("status = ?", 1).
+		Preload("Category").
+		Order("is_hot desc, sort_order ASC, created_at DESC").
+		Find(&primaryProducts).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询一级商品失败"))
+		return
+	}
+
+	// 构建返回数据
+	result := map[string]interface{}{
+		"banners":          banners,
+		"categories":       categories,
+		"primary_products": primaryProducts,
+	}
+
+	c.JSON(http.StatusOK, common.Success(result))
+}
+
+// GetProductCategories 获取商品分类列表
+func (h *UserProductHandler) GetProductCategories(c *gin.Context) {
+	var categories []models.ProductCategory
+
+	err := common.GetDB().Where("status = ?", 1).Order("sort_order ASC, created_at DESC").Find(&categories).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询商品分类失败"))
+		return
+	}
+
+	c.JSON(http.StatusOK, common.Success(categories))
+}
+
+// GetPrimaryProducts 获取一级商品列表
+func (h *UserProductHandler) GetPrimaryProducts(c *gin.Context) {
+	// 分页参数
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 || pageSize > 50 {
+		pageSize = 10
+	}
+
+	// 搜索参数
+	categoryID := c.Query("category_id")
+	productName := c.Query("product_name")
+	sortType := c.DefaultQuery("sort", "default") // default, price_asc, price_desc, sales, views
+
+	db := common.GetDB()
+	var products []models.PrimaryProduct
+	var total int64
+
+	// 构建查询条件 - 只查询上架商品
+	query := db.Model(&models.PrimaryProduct{}).Where("status = ?", 1).Preload("Category")
+
+	// 添加搜索条件
+	if categoryID != "" {
+		query = query.Where("category_id = ?", categoryID)
+	}
+	if productName != "" {
+		query = query.Where("product_name LIKE ?", "%"+productName+"%")
+	}
+
+	// 获取总数
+	query.Count(&total)
+
+	// 排序
+	switch sortType {
+	case "price_asc":
+		query = query.Order("current_price ASC")
+	case "price_desc":
+		query = query.Order("current_price DESC")
+	case "sales":
+		query = query.Order("sales_count DESC")
+	case "views":
+		query = query.Order("view_count DESC")
+	default:
+		query = query.Order("sort_order ASC, created_at DESC")
+	}
+
+	// 分页查询
+	offset := (page - 1) * pageSize
+	err := query.Offset(offset).Limit(pageSize).Find(&products).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询商品列表失败"))
+		return
+	}
+
+	// 构建返回数据
+	result := map[string]interface{}{
+		"list":      products,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	}
+
+	c.JSON(http.StatusOK, common.Success(result))
+}
+
+// GetPrimaryProduct 获取一级商品详情
+func (h *UserProductHandler) GetPrimaryProduct(c *gin.Context) {
+	productID, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(400, "商品ID无效"))
+		return
+	}
+
+	var product models.PrimaryProduct
+	err = common.GetDB().Where("status = ?", 1).Preload("Category").First(&product, uint(productID)).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(404, "商品不存在或已下架"))
+		return
+	}
+
+	// 增加浏览量
+	common.GetDB().Model(&product).UpdateColumn("view_count", product.ViewCount+1)
+
+	c.JSON(http.StatusOK, common.Success(product))
+}
+
+// GetSecondaryProducts 获取二级商品列表（用户挂售的商品）
+func (h *UserProductHandler) GetSecondaryProducts(c *gin.Context) {
+	// 分页参数
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 || pageSize > 50 {
+		pageSize = 10
+	}
+
+	// 搜索参数
+	productName := c.Query("product_name")
+	sortType := c.DefaultQuery("sort", "default") // default, price_asc, price_desc, views
+	categoryId, _ := strconv.Atoi(c.DefaultQuery("category_id", "0"))
+
+	// 地址筛选参数
+	province := c.Query("province")
+	city := c.Query("city")
+	district := c.Query("district")
+
+	db := common.GetDB()
+	var products []models.SecondaryProduct
+	var total int64
+
+	// 构建查询条件 - 只查询上架商品，并预加载卖家信息
+	query := db.Model(&models.SecondaryProduct{}).Where("status = ? and quantity>0", 1).
+		Preload("Seller")
+
+	// 添加商品名称搜索条件
+	if productName != "" {
+		query = query.Where("product_name LIKE ?", "%"+productName+"%")
+	}
+
+	// 添加分类筛选条件
+	if categoryId > 0 {
+		query = query.Where("category_id = ?", categoryId)
+	}
+
+	// 添加地址筛选条件 - 根据卖家的默认地址筛选
+	if province != "" || city != "" || district != "" {
+		// 子查询获取符合地址条件的用户ID
+		subQuery := db.Model(&models.UserAddress{}).
+			Select("user_id").
+			Where("is_default = ?", 1)
+
+		if province != "" {
+			subQuery = subQuery.Where("province = ?", province)
+		}
+		if city != "" {
+			subQuery = subQuery.Where("city = ?", city)
+		}
+		if district != "" {
+			subQuery = subQuery.Where("district = ?", district)
+		}
+
+		query = query.Where("seller_id IN (?)", subQuery)
+	}
+	// 获取总数
+	query.Count(&total)
+
+	// 排序
+	switch sortType {
+	case "price":
+		query = query.Order("selling_price ASC")
+	case "price_desc":
+		query = query.Order("selling_price DESC")
+	case "view":
+		query = query.Order("view_count DESC")
+	case "sales":
+		query = query.Order("sales_count DESC")
+	case "quantity":
+		query = query.Order("quantity DESC")
+	default:
+		query = query.Order("created_at DESC")
+	}
+
+	// 分页查询
+	offset := (page - 1) * pageSize
+	err := query.Offset(offset).Limit(pageSize).Find(&products).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(500, "查询商品列表失败"))
+		return
+	}
+
+	// 获取当前用户信息
+	currentUser, exists := c.Get("current_user")
+	var userID uint
+	if exists {
+		user := currentUser.(models.User)
+		userID = user.ID
+	}
+
+	// 获取系统配置limit_days
+	var config models.SystemConfig
+	db.Where("config_key=?", "limit_days").First(&config)
+	limitDays, _ := strconv.Atoi(config.ConfigValue)
+
+	// 为每个商品添加购买限制检查
+	type ProductWithPurchaseLimit struct {
+		models.SecondaryProduct
+		CanPurchase          bool   `json:"can_purchase"`
+		PurchaseLimitMessage string `json:"purchase_limit_message"`
+	}
+
+	productList := make([]ProductWithPurchaseLimit, 0, len(products))
+	for _, product := range products {
+		productWithLimit := ProductWithPurchaseLimit{
+			SecondaryProduct:     product,
+			CanPurchase:          true,
+			PurchaseLimitMessage: "",
+		}
+
+		// 如果用户已登录，检查购买限制
+		if exists && userID > 0 {
+			// 检查是否是自己的商品
+			if product.SellerID == userID {
+				productWithLimit.CanPurchase = false
+				productWithLimit.PurchaseLimitMessage = "不能购买自己的商品"
+			} else if limitDays > 0 {
+				// 检查是否在限制天数内已经购买过该卖家的商品
+				limitDaysAgo := time.Now().AddDate(0, 0, -limitDays)
+				var existingOrderCount int64
+				db.Model(&models.PurchaseOrder{}).Where(
+					"buyer_id = ? AND seller_id = ? AND product_type = 2 AND created_at > ? AND order_status != 3",
+					userID, product.SellerID, limitDaysAgo,
+				).Count(&existingOrderCount)
+
+				if existingOrderCount > 0 {
+					productWithLimit.CanPurchase = false
+					productWithLimit.PurchaseLimitMessage = fmt.Sprintf("%v天内只能向同一个卖家购买一次商品", limitDays)
+				}
+			}
+		}
+
+		productList = append(productList, productWithLimit)
+	}
+
+	// 构建返回数据
+	result := map[string]interface{}{
+		"list":      productList,
+		"total":     total,
+		"page":      page,
+		"page_size": pageSize,
+	}
+
+	c.JSON(http.StatusOK, common.Success(result))
+}
+
+// GetSecondaryProduct 获取二级商品详情
+func (h *UserProductHandler) GetSecondaryProduct(c *gin.Context) {
+	productID, err := strconv.ParseUint(c.Param("id"), 10, 32)
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(400, "商品ID无效"))
+		return
+	}
+
+	var product models.SecondaryProduct
+	err = common.GetDB().Where("status = ?", 1).Preload("Seller").First(&product, uint(productID)).Error
+	if err != nil {
+		c.JSON(http.StatusOK, common.Error(404, "商品不存在或已下架"))
+		return
+	}
+
+	// 增加浏览量
+	common.GetDB().Model(&product).UpdateColumn("view_count", product.ViewCount+1)
+
+	c.JSON(http.StatusOK, common.Success(product))
+}