package query

import (
	"context"
	"encoding/json"
	"fmt"
	"sort"

	"adm-vehicle-style/errors"
	"adm-vehicle-style/model"
	v1 "adm-vehicle-style/pb/v1"

	jsoniter "github.com/json-iterator/go"
	"git.getensh.com/common/gopkgsv2/database"
	"git.getensh.com/common/gopkgsv2/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
	"gorm.io/gorm"
)

type StyleListRequest struct {
	SeriesID string `json:"series_id"`
}

type styleItem struct {
	BrandID   string `json:"brand_id"`
	Maker     string `json:"maker"`
	ModelYear string `json:"model_year"`
	Price     string `json:"price"`
	SeriesID  string `json:"series_id"`
	StyleID   string `json:"style_id"`
	StyleName string `json:"style_name"`
}

type styleList struct {
	ModelYear string      `json:"model_year"`
	StyleList []styleItem `json:"style_list"`
}

type StyleListResponse struct {
	List []styleList `json:"list"`
}

func StyleList(ctx context.Context, params string) (reply *v1.QueryResponse, err error) {
	reply = &v1.QueryResponse{}

	// 捕获各个task中的异常并返回给调用者
	defer func() {
		if r := recover(); r != nil {
			err = fmt.Errorf("%+v", r)
			e := &status.Status{}
			if er := json.Unmarshal([]byte(err.Error()), e); er != nil {
				logger.Error("err",
					zap.String("system_err", err.Error()),
					zap.Stack("stacktrace"))
			}
		}
	}()

	var req StyleListRequest
	err = jsoniter.UnmarshalFromString(params, &req)
	if err != nil || req.SeriesID == "" {
		return nil, errors.ParamsError
	}

	list, err := model.NewSyStyleModel().
		StyleList(database.DB().Where("series_id = ? AND is_on = 1", req.SeriesID), "brand_id, maker, model_year, price, series_id, style_id, style_name")
	if err != nil && err != gorm.ErrRecordNotFound {
		return reply, errors.SystemError
	}

	if err == gorm.ErrRecordNotFound {
		return reply, nil
	}

	yearMap := make(map[string][]styleItem)
	for _, v := range list {
		yearMap[v.ModelYear] = append(yearMap[v.ModelYear], styleItem{
			BrandID:   v.BrandId,
			Maker:     v.Maker,
			ModelYear: v.ModelYear,
			Price:     v.Price,
			SeriesID:  v.SeriesId,
			StyleID:   v.StyleId,
			StyleName: v.StyleName,
		})
	}

	var keys []string
	keyLen := 0
	for k := range yearMap {
		keys = append(keys, k)
		keyLen++
	}

	sort.Strings(keys)

	res := StyleListResponse{}
	for i := keyLen - 1; i >= 0; i-- {
		st := styleList{
			ModelYear: keys[i],
			StyleList: yearMap[keys[i]],
		}
		res.List = append(res.List, st)
	}
	reply.Data, _ = jsoniter.MarshalToString(res)

	return reply, nil
}