package logic

import (
	"errors"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"gorm.io/gorm"
	"strings"
	"time"

	"context"

	"fusenapi/server/shopping-cart-confirmation/internal/svc"
	"fusenapi/server/shopping-cart-confirmation/internal/types"

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

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

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

// 添加入购物车
func (l *CartAddLogic) CartAdd(req *types.CartAddReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	if userinfo.GetIdType() != auth.IDTYPE_User {
		return resp.SetStatusWithMessage(basic.CodeUnAuth, "please login first")
	}
	if req.BuyNum == 0 {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "param buy_num can`t be 0")
	}
	if req.IsCheck != 0 && req.IsCheck != 1 {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "param is_check should be 0 or 1")
	}
	req.DesignId = strings.Trim(req.DesignId, " ")
	if req.DesignId == "" {
		return resp.SetStatusWithMessage(basic.CodeRequestParamsErr, "param design_id can`t be empty")
	}
	//查询是否有此设计
	productDesignModel := gmodel.NewFsProductDesignModel(l.svcCtx.MysqlConn)
	productDesignInfo, err := productDesignModel.FindOneBySn(l.ctx, req.DesignId, userinfo.UserId)
	if err != nil {
		if errors.Is(err, gorm.ErrRecordNotFound) {
			return resp.SetStatusWithMessage(basic.CodeDbRecordNotFoundErr, "design info is not exists")
		}
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "failed to get product design info")
	}
	//查找是否有此材质、产品、大小id的阶梯价格
	productPriceModel := gmodel.NewFsProductPriceModel(l.svcCtx.MysqlConn)
	priceStatus := int64(1)
	priceReq := gmodel.FindOneProductPriceByParamsReq{
		ProductId:  productDesignInfo.ProductId,
		MaterialId: productDesignInfo.MaterialId,
		SizeId:     productDesignInfo.SizeId,
		Status:     &priceStatus,
	}
	productPriceInfo, err := productPriceModel.FindOneProductPriceByParams(l.ctx, priceReq)
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "failed to get product price info")
	}
	if productPriceInfo.Id == 0 {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, " product price info is not exists")
	}
	if *productPriceInfo.EachBoxNum == 0 {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, " product price info err: each box num can`t be zero")
	}
	//买的数量和每箱数量取余为0 且 份数大于等于最小购买数量才算满足条件
	if req.BuyNum%*productPriceInfo.EachBoxNum != 0 {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "invalid buy number,please check")
	}
	if int64(float64(req.BuyNum)/float64(*productPriceInfo.EachBoxNum)) < *productPriceInfo.MinBuyNum {
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "invalid buy number,please check!")
	}
	//查询购物车
	cartModel := gmodel.NewFsCartModel(l.svcCtx.MysqlConn)
	cartStatus := int64(1)
	cartReq := gmodel.FindOneCartByParamsReq{
		UserId:     &userinfo.UserId,
		ProductId:  productDesignInfo.ProductId,
		TemplateId: productDesignInfo.TemplateId,
		PriceId:    &productPriceInfo.Id,
		DesignId:   &productDesignInfo.Id,
		MaterialId: productDesignInfo.MaterialId,
		Status:     &cartStatus,
	}
	cartInfo, err := cartModel.FindOneCartByParams(l.ctx, cartReq)
	if err != nil && !errors.Is(err, gorm.ErrRecordNotFound) {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "failed to get cart info")
	}
	now := time.Now().Unix()
	nowTime := time.Now()
	data := gmodel.FsCart{
		UserId:     &userinfo.UserId,
		ProductId:  productPriceInfo.ProductId,
		TemplateId: productDesignInfo.TemplateId,
		PriceId:    &productPriceInfo.Id,
		MaterialId: productDesignInfo.MaterialId,
		SizeId:     productDesignInfo.SizeId,
		BuyNum:     &req.BuyNum,
		Cover:      productDesignInfo.Cover,
		DesignId:   &productDesignInfo.Id,
		Ctime:      &now,
		Status:     &cartStatus,
		OptionalId: productDesignInfo.OptionalId,
		IsCheck:    &req.IsCheck,
		TsTime:     &nowTime,
	}
	if cartInfo == nil {
		err = cartModel.Create(l.ctx, data)
	} else {
		err = cartModel.Update(l.ctx, cartInfo.Id, data)
	}
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "failed to add to cart")
	}
	return resp.SetStatusWithMessage(basic.CodeOK, "add to cart success")
}