package logic

import (
	"context"
	"fusenapi/constants"
	"fusenapi/model/gmodel"
	"fusenapi/utils/auth"
	"fusenapi/utils/basic"
	"fusenapi/utils/shopping_cart"
	"math"

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

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

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

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

// 处理进入前逻辑w,r
// func (l *GetCartsLogic) BeforeLogic(w http.ResponseWriter, r *http.Request) {
// }

func (l *GetCartsLogic) GetCarts(req *types.GetCartsReq, userinfo *auth.UserInfo) (resp *basic.Response) {
	if req.CurrentPage <= 0 {
		req.CurrentPage = constants.DEFAULT_PAGE
	}
	limit := 10
	//获取用户购物车列表
	carts, total, err := l.svcCtx.AllModels.FsShoppingCart.GetAllCartsByParam(l.ctx, gmodel.GetAllCartsByParamReq{
		UserId: userinfo.UserId,
		Fields: "",
		Sort:   "id DESC",
		Page:   req.CurrentPage,
		Limit:  limit,
	})
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "system err:failed to get your shopping carts")
	}
	if len(carts) == 0 {
		return resp.SetStatusWithMessage(basic.CodeOK, "success", types.GetCartsRsp{
			Meta: types.Meta{
				TotalCount:  total,
				PageCount:   int64(math.Ceil(float64(total) / float64(limit))),
				CurrentPage: req.CurrentPage,
				PerPage:     limit,
			},
			CartList: nil,
		})
	}
	lenCarts := len(carts)
	templateIds := make([]int64, 0, lenCarts)
	modelIds := make([]int64, 0, lenCarts) //模型 + 配件
	sizeIds := make([]int64, 0, lenCarts)
	for index := range carts {
		templateIds = append(templateIds, *carts[index].TemplateId)
		modelIds = append(modelIds, *carts[index].ModelId, *carts[index].FittingId)
		sizeIds = append(sizeIds, *carts[index].SizeId)
	}
	//获取尺寸列表
	sizeList, err := l.svcCtx.AllModels.FsProductSize.GetAllByIds(l.ctx, sizeIds, "")
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get size list")
	}
	mapSize := make(map[int64]gmodel.FsProductSize)
	for _, v := range sizeList {
		mapSize[v.Id] = v
	}
	//获取模型和配件信息
	modelList, err := l.svcCtx.AllModels.FsProductModel3d.GetAllByIds(l.ctx, modelIds, "")
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get model list")
	}
	mapModel := make(map[int64]gmodel.FsProductModel3d)
	for _, v := range modelList {
		mapModel[v.Id] = v
	}
	//获取模板列表
	templateList, err := l.svcCtx.AllModels.FsProductTemplateV2.FindAllByIds(l.ctx, templateIds)
	if err != nil {
		logx.Error(err)
		return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "failed to get template list")
	}
	mapTemplate := make(map[int64]gmodel.FsProductTemplateV2)
	for _, v := range templateList {
		mapTemplate[v.Id] = v
	}
	//定义map收集变更信息
	mapCartChange := make(map[int64]string)
	//校验购物车数据是否变更
	err = shopping_cart.VerifyShoppingCartSnapshotDataChange(shopping_cart.VerifyShoppingCartSnapshotDataChangeReq{
		Carts:         carts,
		MapSize:       mapSize,
		MapModel:      mapModel,
		MapTemplate:   mapTemplate,
		MapCartChange: mapCartChange,
	})
	if err != nil {
		logx.Error("VerifyShoppingCartSnapshotDataChange err:", err.Error())
		return resp.SetStatusWithMessage(basic.CodeServiceErr, "system err:failed to check shopping cart change data")
	}
	/*list := make([]types.CartItem, 0, lenCarts)
	for index := range carts {

	}*/
	return resp.SetStatus(basic.CodeOK)
}

// 处理逻辑后 w,r 如:重定向, resp 必须重新处理
// func (l *GetCartsLogic) AfterLogic(w http.ResponseWriter, r *http.Request, resp *basic.Response) {
// // httpx.OkJsonCtx(r.Context(), w, resp)
// }