package logic

import (
	"errors"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"fusenapi/utils/image"
	"gorm.io/gorm"

	"context"

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

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

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

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

func (l *GetRecommandProductListLogic) GetRecommandProductList(req *types.GetRecommandProductListReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	req.Num = 8 //目前写死
	if req.Size > 0 {
		req.Size = image.GetCurrentSize(req.Size)
	}
	//随机取产品列表
	productList, err := l.svcCtx.AllModels.FsProduct.GetRandomProductList(l.ctx, int(req.Num))
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get random recommend product list")
	}
	if len(productList) == 0 {
		return resp.SetStatusWithMessage(basic.CodeOK, "success")
	}
	//获取用户信息(不用判断存在)
	user, err := l.svcCtx.AllModels.FsUser.FindUserById(l.ctx, userinfo.UserId)
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get user")
	}
	list := make([]types.GetRecommandProductListRsp, 0, len(productList))
	for _, v := range productList {
		r := image.ThousandFaceImageFormatReq{
			Size:           int(req.Size),
			IsThousandFace: 0,
			Cover:          *v.Cover,
			CoverImg:       *v.CoverImg,
			CoverDefault:   *v.Cover,
			ProductId:      v.Id,
			UserId:         userinfo.UserId,
		}
		if user.Id != 0 {
			r.IsThousandFace = int(*user.IsThousandFace)
		}
		image.ThousandFaceImageFormat(&r)
		list = append(list, types.GetRecommandProductListRsp{
			Id:           v.Id,
			Sn:           *v.Sn,
			Title:        *v.Title,
			TitleCn:      *v.TitleCn,
			Cover:        r.Cover,
			CoverImg:     r.CoverImg,
			CoverDefault: r.CoverDefault,
			Intro:        *v.Intro,
		})
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "success", list)
}