package logic

import (
	"context"
	"errors"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"fusenapi/utils/format"
	"fusenapi/utils/image"
	"gorm.io/gorm"
	"strings"

	"fusenapi/server/product/internal/svc"
	"fusenapi/server/product/internal/types"

	"github.com/zeromicro/go-zero/core/logx"
)

type OtherProductListLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewOtherProductListLogic(ctx context.Context, svcCtx *svc.ServiceContext) *OtherProductListLogic {
	return &OtherProductListLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *OtherProductListLogic) OtherProductList(req *types.OtherProductListReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	if userinfo.GetIdType() != auth.IDTYPE_User {
		return resp.SetStatusWithMessage(basic.CodeUnAuth, "please login first")
	}
	if req.Num <= 0 || req.Num > 100{
		req.Num = 4
	}
	if req.Size > 0{
		req.Size = image.GetCurrentSize(req.Size)
	}
	//获取用户信息
	user,err := l.svcCtx.AllModels.FsUser.FindUserById(l.ctx,userinfo.UserId)
	if err != nil {
		if errors.Is(err,gorm.ErrRecordNotFound){
			return resp.SetStatusWithMessage(basic.CodeUnAuth,"user not exists")
		}
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr,"failed to get user info")
	}
	tagInfo,err := l.svcCtx.AllModels.FsTags.FindOne(l.ctx,req.Cid)
	if err != nil{
		if errors.Is(err,gorm.ErrRecordNotFound){
			return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr,"the tag info is not exists")
		}
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr,"failed to get tage info")
	}
	if *tagInfo.Status != 1{
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr,"tage info is not available")
	}
	if tagInfo.RecommendProduct == nil || *tagInfo.RecommendProduct == "" {
		return resp.SetStatusWithMessage(basic.CodeOK,"success")
	}
	pids,err := format.StrSlicToInt64Slice(strings.Split(*tagInfo.RecommendProduct,","))
	if err != nil{
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr,"failed to parse recommend product")
	}
	list,err := l.getRandom(pids,int(req.Num))
	if err != nil{
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr,"failed to get random list")
	}
	if req.Size <= 0{
		return resp.SetStatusWithMessage(basic.CodeOK,"success,",list)
	}
	//千人前面处理
	for _,v := range list{
		r := &image.ThousandFaceImageFormatReq{
			Size:           int(req.Size),
			IsThousandFace: int(*user.IsThousandFace),
			Cover:          v.Cover,
			CoverImg:       v.CoverImg,
			CoverDefault:   "",
			ProductId:      v.Id,
			UserInfo:       user,
		}
		image.ThousandFaceImageFormat(r)
		v.Cover = r.Cover
		v.CoverImg = r.CoverImg
		v.CoverDefault = r.CoverDefault
	}
	return resp.SetStatusWithMessage(basic.CodeOK,"success,",list)
}
func (l *OtherProductListLogic) getRandom(productIds []int64,limit int)(result []types.OtherProductListRsp,err error){
	if len(productIds) == 0{
		return
	}
	//获取推荐产品信息
	recommendProductList,err := l.svcCtx.AllModels.FsProduct.GetRandomProductListInIds(l.ctx,productIds,limit)
	if err != nil{
		return nil, err
	}
	if len(recommendProductList) == 0{
		return
	}
	mapProduct := make(map[int64]int)
	newProductIds := make([]int64,0,len(recommendProductList))
	for k,v := range recommendProductList{
		newProductIds = append(newProductIds,v.Id)
		mapProduct[v.Id] = k
	}
	//查询最新的sku
	reqStatus := int64(1)
	productTemplateIds,err := l.svcCtx.AllModels.FsProductTemplateV2.GetProductTemplateListByParams(l.ctx,gmodel.GetProductTemplateListByParamsReq{
		ProductIds:   newProductIds,
		GroupBy:      "product_id",
		OrderBy:      "id DESC,sort DESC",
		Fields:       "product_id,max(id) as id",
		Status:       &reqStatus,
	})
	if err != nil{
		return nil,err
	}
	for _,v := range productTemplateIds{
		productIndex,ok := mapProduct[*v.ProductId]
		if !ok{
			continue
		}
		productInfo := recommendProductList[productIndex]
		result = append(result,types.OtherProductListRsp{
			Title:    *productInfo.Title,
			Cover:    *productInfo.Cover,
			CoverImg: *productInfo.CoverImg,
			Sn:       *productInfo.Sn,
			Id:       *v.ProductId,
			SkuId:    v.Id,
		})
	}
	return result,nil
}