bakery/app/admin/svc/order/svc_order_pay.go

package order

import (
	"applet/app/admin/md"
	"applet/app/db"
	"applet/app/db/model"
	"applet/app/e"
	"applet/app/utils"
	"fmt"
	"github.com/gin-gonic/gin"
	"time"
)

func GoodsPayCalcAmount(c *gin.Context) {
	var req md.GoodsPayParam
	if err := c.ShouldBindJSON(&req); err != nil {
		e.OutErr(c, e.ERR_INVALID_ARGS, err)
		return
	}
	amount, _ := commCalc(c, req)
	res := map[string]string{
		"amount": utils.Float64ToStr(amount),
	}
	e.OutSuc(c, res, nil)
	return
}
func GoodsPayCreate(c *gin.Context) {
	var req md.GoodsPayParam
	if err := c.ShouldBindJSON(&req); err != nil {
		e.OutErr(c, e.ERR_INVALID_ARGS, err)
		return
	}
	amount, skuPrice := commCalc(c, req)
	if amount <= 0 {
		e.OutErr(c, 400, e.NewErr(400, "价格计算错误，下单失败"))
		return
	}
	sess := db.Db.NewSession()
	defer sess.Close()
	sess.Begin()
	sess.Commit()
	var order = model.Order{
		Oid:          utils.StrToInt64(utils.OrderUUID(utils.StrToInt(req.EnterpriseId))),
		CreateAt:     time.Now(),
		EnterpriseId: utils.StrToInt(req.EnterpriseId),
		BuyInfo:      utils.SerializeStr(req.BuyInfo),
		BuyPhone:     req.BuyInfo.Phone,
		Amount:       utils.Float64ToStr(amount),
	}
	one, err := sess.InsertOne(&order)
	if one == 0 || err != nil {
		sess.Rollback()
		e.OutErr(c, 400, e.NewErr(400, "下单失败"))
		return
	}
	var orderGoods = make([]model.OrderGoods, 0)
	goodsTotal := make(map[int64]int)
	skuIds := make([]int64, 0)
	gids := make([]int64, 0)
	for _, v := range req.GoodsInfo {
		skuIds = append(skuIds, utils.StrToInt64(v.SkuId))
		gids = append(gids, utils.StrToInt64(v.GoodsId))
	}
	skuMap := db.GetSkuMore(db.Db, skuIds)
	goodsMap := db.GetGoodsMore(db.Db, gids)

	for _, v := range req.GoodsInfo {
		tmp := model.OrderGoods{
			Oid:        order.Oid,
			GoodsId:    utils.StrToInt64(v.GoodsId),
			GoodsTitle: goodsMap[utils.StrToInt64(v.GoodsId)].Title,
			SkuId:      utils.StrToInt64(v.SkuId),
			SkuCode:    skuMap[utils.StrToInt64(v.SkuId)].SkuCode,
			Sku:        skuMap[utils.StrToInt64(v.SkuId)].Sku,
			Num:        utils.StrToInt(v.Num),
			Price:      skuPrice[v.SkuId],
		}
		goodsTotal[tmp.GoodsId] += tmp.Num
		orderGoods = append(orderGoods, tmp)
	}
	for k, v := range goodsTotal {
		sql := `UPDATE goods SET sale=sale-%d WHERE goods_id=%d`
		sql = fmt.Sprintf(sql, v, k)
		db.QueryNativeStringSess(sess, sql)
	}
	one, err = sess.Insert(&orderGoods)
	if one == 0 || err != nil {
		sess.Rollback()
		e.OutErr(c, 400, e.NewErr(400, "下单失败"))
		return
	}
	e.OutSuc(c, "success", nil)
	return
}
func commCalc(c *gin.Context, req md.GoodsPayParam) (float64, map[string]string) {
	skuPrice := make(map[string]string, 0)
	skuIds := make([]int64, 0)
	for _, v := range req.GoodsInfo {
		skuIds = append(skuIds, utils.StrToInt64(v.SkuId))
	}
	if len(skuIds) == 0 {
		return 0, skuPrice
	}
	engine := db.Db
	skuMap := db.GetSkuMore(engine, skuIds)
	//计算价格 TODO 对应方案的价格怎么算
	var amount float64 = 0
	for _, v := range req.GoodsInfo {
		sku, ok := skuMap[utils.StrToInt64(v.SkuId)]
		if ok == false {
			return 0, skuPrice
		}
		skuPrice[v.SkuId] = sku.Price
		amount += utils.StrToFloat64(sku.Price) * utils.StrToFloat64(v.Num)
	}
	return amount, skuPrice

}