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85 lines
2.2 KiB
85 lines
2.2 KiB
package shopping_trolley
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import (
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"fmt"
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"recook/internal/back"
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"recook/internal/dbc"
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"recook/internal/model/goods"
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"recook/internal/model/promotion"
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"recook/internal/model/shopping_trolley"
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"recook/tools"
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"time"
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"github.com/gin-gonic/gin"
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)
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type updateQuantityParam struct {
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UserID uint `json:"userId"`
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ShoppingTrolleyId uint `json:"shoppingTrolleyId" validate:"min=1"`
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Quantity uint `json:"quantity" validate:"min=1"`
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}
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/*更新购物车商品数量 库存超过时如果是增加数量则禁止操作，可以减数量*/
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func UpdateGoodsQuantity(c *gin.Context) {
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var p updateQuantityParam
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if err := tools.ParseParams(&p, c); err != nil {
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back.Fail(c, err.Error())
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return
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}
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var info shopping_trolley.Information
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dbc.DB.First(&info, p.ShoppingTrolleyId)
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if info.UserID != p.UserID {
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back.Fail(c, "非法调用")
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return
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}
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var sku goods.Sku
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dbc.DB.First(&sku, info.SkuID)
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inventory := sku.Inventory
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// 判断商品在不在活动里
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var promotionSku promotion.Sku
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{
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var promotionGoods promotion.Goods
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dbc.DB.First(&(promotionGoods), "goods_id = ? AND promotion_start_date = ?", sku.GoodsID, time.Now().Format("2006-01-02"))
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if promotionGoods.ID == 0 {
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tomorrow := time.Now().Add(24 * time.Hour)
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dbc.DB.First(&(promotionGoods), "goods_id = ? AND promotion_start_date = ?", sku.GoodsID, tomorrow.Format("2006-01-02"))
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}
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if promotionGoods.ID > 0 {
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dbc.DB.First(&promotionSku, "promotion_goods_id = ? AND sku_id = ?", promotionGoods.ID, sku.ID)
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inventory = promotionSku.Inventory
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}
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}
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quan := p.Quantity
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if quan > inventory {
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back.Fail(c, "超出库存")
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return
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}
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if p.Quantity > sku.Inventory {
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if p.Quantity < info.Quantity { // 说明在减库存
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dbc.DB.Model(&info).Updates(shopping_trolley.Information{Quantity: p.Quantity})
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back.Suc(c, "仅剩"+fmt.Sprintf("%d", sku.Inventory)+"件", nil)
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} else {
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back.Fail(c, "超出库存")
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}
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} else {
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if p.Quantity >= 1 {
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quan := p.Quantity
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if p.Quantity > 50 {
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quan = 50
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}
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if err := dbc.DB.Model(&info).Updates(shopping_trolley.Information{Quantity: quan}).Error; err != nil {
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back.Err(c, err.Error())
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return
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}
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back.Suc(c, "", nil)
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} else {
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back.Fail(c, "不能再少啦！")
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}
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}
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}
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