package jyy

import (
	"errors"
	"fmt"
	"recook/internal/model/order_preview"
	user2 "recook/internal/model/user"
	"recook/internal/v2/model/jyy"
	goods2 "recook/internal/v2/model/recook/goods"
	"recook/internal/v2/model/recook/user"
	"time"

	"github.com/golangkit/formatime"
	"github.com/shopspring/decimal"
	"gorm.io/gorm"

	"git.oa00.com/go/mysql"
)

type logic struct {
}

var Logic = logic{}

func (o logic) Banners() (res []jyy.Banner, err error) {
	now := time.Now()
	mysql.Db.Where("start < ?", now).Where("end > ?", now).Order("order_sort asc").Order("id desc").Find(&res)
	return
}

func (o logic) Activities() (res []jyy.Activity, err error) {
	mysql.Db.Where("status = 1").Order("order_sort asc").Order("id desc").Find(&res)
	return
}

type ArgsEntryReq struct {
	UserID uint `json:"user_id"`
}

type ShopCartSku struct {
	ID            uint            `json:"id"`
	SkuID         uint            `json:"sku_id"`
	DiscountPrice decimal.Decimal `json:"discount_price"`
	SalePrice     decimal.Decimal `json:"sale_price"`
	Quantity      uint            `json:"quantity"`
	Limit         int             `json:"limit"`
	Min           int             `json:"min"`
	SkuName       string          `json:"sku_name"`
	GoodsName     string          `json:"goods_name,omitempty"`
	SalePublish   uint            `json:"sale_publish"`
	PicUrl        string          `json:"pic_url"`
	GoodsID       uint            `json:"goods_id"`
}

type ShopCartEntry struct {
	GoodsID     uint          `json:"goods_id"`
	GoodsName   string        `json:"goods_name"`
	MainPhoto   string        `json:"main_photo"`
	SkuList     []ShopCartSku `json:"sku_list"`
	SalePublish uint          `json:"sale_publish"`
}

func (o logic) ShopCartEntries(args ArgsEntryReq) (res []ShopCartSku) {
	sc := make([]jyy.ShopCartEntry, 0)
	mysql.Db.Model(&jyy.ShopCartEntry{}).Where("user_id = ?", args.UserID).Find(&sc)
	ids := make([]uint, 0)
	idsMap := make(map[uint]uint)
	skuMap := make(map[uint]uint)
	for _, v := range sc {
		ids = append(ids, v.SkuID)
		idsMap[v.SkuID] = v.Quantity
		skuMap[v.SkuID] = v.ID
	}

	var u1 user.RecookUserInfoModel
	mysql.Db.First(&u1, "id = ?", args.UserID)

	skuList := make([]goods2.RecookGoodsSkuModel, 0)
	mysql.Db.Preload("GoodsInfo").Where("id in (?)", ids).Find(&skuList)

	for _, v := range skuList {
		res = append(res, ShopCartSku{
			ID:            skuMap[v.Id],
			SkuID:         v.Id,
			DiscountPrice: v.DiscountPrice,
			SalePrice:     v.GetSalePrice(u1.Level),
			Quantity:      idsMap[v.Id],
			Limit:         v.Limit,
			Min:           v.Min,
			SkuName:       v.Name,
			PicUrl:        v.PicURL,
			SalePublish:   v.GoodsInfo.SalePublish,
			GoodsName:     v.GoodsInfo.GoodsName,
			GoodsID:       v.GoodsId,
		})
	}

	// goodsMap := make(map[uint][]ShopCartSku)
	// for _, v := range skuList {
	// 	goodsMap[v.GoodsId] = append(goodsMap[v.GoodsId], ShopCartSku{
	// 		ID:            skuMap[v.Id],
	// 		SkuID:         v.Id,
	// 		DiscountPrice: v.DiscountPrice,
	// 		SalePrice:     v.GetSalePrice(u1.Level),
	// 		Quantity:      idsMap[v.Id],
	// 		Limit:         v.Limit,
	// 		Min:           v.Min,
	// 		SkuName:       v.Name,
	// 	})
	// }
	// inRes := make(map[uint]bool)
	// for _, v := range skuList {
	// 	if inRes[v.GoodsId] {
	// 		continue
	// 	}
	// 	inRes[v.GoodsId] = true
	// 	res = append(res, ShopCartEntry{
	// 		GoodsID:     v.GoodsId,
	// 		GoodsName:   v.GoodsInfo.GoodsName,
	// 		MainPhoto:   v.GoodsInfo.MainPhoto.Url,
	// 		SkuList:     goodsMap[v.GoodsId],
	// 		SalePublish: v.GoodsInfo.SalePublish,
	// 	})
	// }

	return
}

type skuEntry struct {
	SkuID    uint `json:"sku_id"`
	Quantity int  `json:"quantity"`
}

type ArgsAddSku struct {
	UserID   uint `json:"user_id"`
	IsUpdate bool
	SkuList  []skuEntry `json:"sku_list" validate:"required,gte=1"`
}

func (o logic) ShopCartAddSku(args ArgsAddSku) (err error) {
	var skuList []goods2.RecookGoodsSkuModel
	ids := make([]uint, 0)
	idMap := make(map[uint]int)
	for _, v := range args.SkuList {
		ids = append(ids, v.SkuID)
		idMap[v.SkuID] = v.Quantity
	}
	mysql.Db.Preload("GoodsInfo").Find(&skuList, "id in (?)", ids)
	if len(skuList) != len(ids) {
		return errors.New("商品选择错误")
	}
	for _, v := range skuList {
		if v.GoodsInfo.SalePublish != 1 {
			return fmt.Errorf("%d商品下架", v.GoodsId)
		}
		if !v.GoodsInfo.IsSale {
			return fmt.Errorf("%d商品不可批发", v.GoodsId)
		}
		if idMap[v.Id] < v.Min {
			return fmt.Errorf("%s商品最低%d", v.Name, v.Min)
		}
		if idMap[v.Id]%v.Limit != 0 {
			return fmt.Errorf("%s商品每手至少%d", v.Name, v.Min)
		}
	}
	data := make([]jyy.ShopCartEntry, 0)
	mysql.Db.Find(&data, "user_id = ?", args.UserID)
	isUsed := make(map[uint]bool)

	for _, v := range data {
		if idMap[v.SkuID] != 0 {
			if args.IsUpdate {
				v.Quantity = uint(idMap[v.SkuID])
			} else {
				v.Quantity += uint(idMap[v.SkuID])
			}
			mysql.Db.Save(v)
			isUsed[v.SkuID] = true
		}
	}
	res := make([]jyy.ShopCartEntry, 0)
	for _, v := range skuList {
		if isUsed[v.Id] {
			continue
		}
		res = append(res, jyy.ShopCartEntry{
			SkuID:    v.Id,
			GoodsID:  v.GoodsId,
			UserID:   args.UserID,
			Quantity: uint(idMap[v.Id]),
		})
	}
	if len(res) == 0 {
		return nil
	}
	if err = mysql.Db.Create(&res).Error; err != nil {
		return err
	}
	return
}

func (o logic) ShopCartDeleteSku(args ArgsAddSku) (err error) {
	ids := make([]uint, 0)
	for _, v := range args.SkuList {
		ids = append(ids, v.SkuID)
	}
	err = mysql.Db.Delete(&jyy.ShopCartEntry{}, "sku_id in (?)", ids).Error
	return
}

type OrderPreview struct {
	UserID  uint       `json:"user_id" validate:"required"`
	SkuList []skuEntry `json:"sku_list" validate:"required"`
	Channel uint       `json:"channel" validate:"oneof=0 1"`
}

type OrderPreviewInfo struct {
	PreviewID uint            `json:"preview_id"`
	Addr      user2.Addr      `json:"Addr"`
	SkuList   []ShopCartSku   `json:"sku_list"`
	Total     decimal.Decimal `json:"total"`
}

func (o logic) OrderPreview(args OrderPreview) (err error, res OrderPreviewInfo) {
	var u1 user.RecookUserInfoModel
	if err = mysql.Db.First(&u1, "id = ?", args.UserID).Error; err != nil {
		return
	}
	if u1.Level < 2 || (u1.Level == 2 && !u1.IsOffline) {
		err = errors.New("用户权限不足")
		return
	}
	var skuList []goods2.RecookGoodsSkuModel
	ids := make([]uint, 0)
	idMap := make(map[uint]int)
	for _, v := range args.SkuList {
		ids = append(ids, v.SkuID)
		idMap[v.SkuID] = v.Quantity
	}
	mysql.Db.Preload("GoodsInfo.MainPhoto").
		Preload("GoodsInfo.Brand").
		Preload("GoodsInfo.FirstCategory").
		Preload("GoodsInfo.SecondCategory").
		Find(&skuList, "id in (?)", ids)
	if len(skuList) != len(ids) {
		err = errors.New("商品选择错误")
		return
	}
	for _, v := range skuList {
		if v.GoodsInfo.SalePublish != 1 {
			err = fmt.Errorf("%d商品下架", v.GoodsId)
			return
		}
		if !v.GoodsInfo.IsSale {
			err = fmt.Errorf("%d商品不可批发", v.GoodsId)
			return
		}
		if idMap[v.Id] < v.Min {
			err = fmt.Errorf("%s商品最低%d", v.Name, v.Min)
			return
		}
		if idMap[v.Id]%v.Limit != 0 {
			err = fmt.Errorf("%s商品每手至少%d", v.Name, v.Min)
			return
		}
	}
	goodsTotalAmount := decimal.Zero
	cost := decimal.Zero
	preOrderGoodsList := make([]order_preview.GoodsDetail, 0, 0)
	sl := make([]ShopCartSku, 0)

	for _, v := range skuList {
		if v.SalePurchasePrice.IsZero() {
			err = errors.New("价格异常")
			return
		}
		qu := decimal.NewFromInt(int64(idMap[v.Id]))
		goodsInfo := v.GoodsInfo
		one := order_preview.GoodsDetail{
			VendorID:              goodsInfo.VendorID,
			VendorName:            "",
			BrandID:               goodsInfo.BrandID,
			BrandName:             goodsInfo.Brand.Name,
			CategoryName:          goodsInfo.FirstCategory.Name + "/" + goodsInfo.SecondCategory.Name,
			GoodsID:               goodsInfo.Id,
			GoodsName:             goodsInfo.GoodsName,
			IsJoinTeamPerformance: goodsInfo.IsJoinTeamPerformance,
			Hash:                  goodsInfo.Hash,
			SkuID:                 v.Id,
			SkuName:               v.Name,
			SkuCode:               v.Code,
			MainPhotoURL:          goodsInfo.MainPhoto.Url,
			Quantity:              uint(idMap[v.Id]),
			FreightID:             goodsInfo.FreightID,
			Weight:                goodsInfo.Weight,
			PromotionSkuId:        0,
			PromotionGoodsId:      0,
			PromotionName:         "",
			UnitPrice:             v.GetSalePrice(u1.Level),
			PurchasePrice:         v.SalePurchasePrice,
			TotalCommission:       decimal.Zero,
			GoodsAmount:           v.GetSalePrice(u1.Level).Mul(qu),
			IsImport:              goodsInfo.IsImport,
			Storehouse:            goodsInfo.Storehouse,
			IsFerme:               goodsInfo.IsFerme,
			ActualAmount:          v.GetSalePrice(u1.Level).Mul(qu),
		}
		sl = append(sl, ShopCartSku{
			SkuID:         v.Id,
			DiscountPrice: v.DiscountPrice,
			SalePrice:     v.GetSalePrice(u1.Level),
			Quantity:      uint(idMap[v.Id]),
			Limit:         v.Limit,
			Min:           v.Min,
			SkuName:       v.Name,
			GoodsName:     v.GoodsInfo.GoodsName,
			PicUrl:        v.PicURL,
		})
		preOrderGoodsList = append(preOrderGoodsList, one)
		goodsTotalAmount = goodsTotalAmount.Add(v.GetSalePrice(u1.Level).Mul(qu))
		cost = cost.Add(v.PurchasePrice.Mul(qu))
	}
	if goodsTotalAmount.LessThanOrEqual(decimal.Zero) {
		err = fmt.Errorf("订单价格异常")
		return
	}
	var defaultAddr user2.Addr
	{
		err = mysql.Db.First(&defaultAddr, "user_id = ? AND is_default = 1", args.UserID).Error
		if err != nil && err != gorm.ErrRecordNotFound {
			return
		}
	}
	if err = mysql.Db.Transaction(func(tx *gorm.DB) error {
		preOrderInfo := order_preview.Information{
			AncestorID:                0,
			ParentID:                  0,
			UserID:                    args.UserID,
			SharerID:                  0,
			Title:                     skuList[0].GoodsInfo.GoodsName + "等多件",
			BrandCouponTotalAmount:    decimal.Zero,
			UniverseCouponTotalAmount: decimal.Zero,
			CoinTotalAmount:           decimal.Zero,
			ExpressTotalFee:           decimal.Zero,
			GoodsTotalAmount:          goodsTotalAmount,
			GoodsTotalCommission:      decimal.Zero,
			ActualTotalAmount:         goodsTotalAmount,
			Channel:                   args.Channel,
			Cost:                      cost,
			CreatedAt:                 formatime.NewSecondNow(),
			OrderType:                 2,
		}
		if e := tx.Create(&preOrderInfo).Error; e != nil {
			return e
		}
		for i := range preOrderGoodsList {
			preOrderGoodsList[i].OrderID = preOrderInfo.ID
		}
		if e := tx.Create(&preOrderGoodsList).Error; e != nil {
			return e
		}

		preOrderAddr := order_preview.Addr{
			OrderID:        preOrderInfo.ID,
			AddressID:      defaultAddr.ID,
			Province:       defaultAddr.Province,
			City:           defaultAddr.City,
			District:       defaultAddr.District,
			Address:        defaultAddr.Address,
			ReceiverName:   defaultAddr.Name,
			Mobile:         defaultAddr.Mobile,
			IsDeliveryArea: 1,
		}
		if e := tx.Create(&preOrderAddr).Error; e != nil {
			return e
		}
		res.PreviewID = preOrderInfo.ID
		res.Addr = defaultAddr
		res.SkuList = sl
		res.Total = goodsTotalAmount
		return nil
	}); err != nil {
		return
	}
	return
}

type OrderAddrUpdate struct {
	PreviewID    uint   `json:"preview_id"`
	AddressID    uint   `json:"address_id"`
	BuyerMessage string `json:"buyer_message"`
}

func (o logic) OrderUpdate(args OrderAddrUpdate) (err error) {
	var addr user2.Addr
	err = mysql.Db.First(&addr, "id = ?", args.AddressID).Error
	if err != nil {
		return
	}

	var previewOrderAddr order_preview.Addr
	err = mysql.Db.First(&previewOrderAddr, "order_id = ?", args.PreviewID).Error
	if err != nil {
		return
	}

	if err = mysql.Db.Transaction(func(tx *gorm.DB) error {
		if addr.ID > 0 {
			if e := tx.Model(&previewOrderAddr).Updates(map[string]interface{}{
				"address_id":       addr.ID,
				"province":         addr.Province,
				"city":             addr.City,
				"district":         addr.District,
				"address":          addr.Address,
				"receiver_name":    addr.Name,
				"mobile":           addr.Mobile,
				"is_delivery_area": 1,
			}).Error; e != nil {
				return e
			}
		}
		if e := tx.Table((&order_preview.Information{}).TableName()).
			Where("id = ?", args.PreviewID).
			Updates(map[string]interface{}{"buyer_message": args.BuyerMessage}).Error; e != nil {
			return e
		}

		return nil
	}); err != nil {
		return
	}

	return
}

func (o logic) Contact() (res jyy.Contact) {
	mysql.Db.First(&res)
	return
}