// Copyright 2019 getensh.com. All rights reserved.
// Use of this source code is governed by getensh.com.

package vote

import (
	"context"
	"encoding/json"
	"fmt"
	"git.getensh.com/common/gopkgs/database"
	"git.getensh.com/common/gopkgs/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
	"property-garden/errors"
	dbmodel "property-garden/model"
	"property-garden/parser"
	pb_v1 "property-garden/pb/v1"
	"property-garden/utils"
)

func checkVoteResultListParam(req *pb_v1.VoteResultListRequest) error {
	switch {
	case req.GardenId == 0:
		return status.Error(10003, "小区不能为空")
	case req.Id == 0:
		return status.Error(10003, "投票id不能为空")
	case req.Number == 0:
		return status.Error(10003, "题目编号不能为空")
	}
	if req.PageSize == 0 {
		req.PageSize = 10
	}
	if req.Page == 0 {
		req.Page = 1
	}

	return nil

}

func getUserInfo(uids []int64, dbname string) (map[int64]dbmodel.THouseholdUser, error) {
	p := dbmodel.NewHouseholdUser(dbname)
	where := map[string]interface{}{
		"id in": uids,
	}
	list, err := p.List(database.DB(), where, nil, -1, -1)
	if err != nil {
		return nil, errors.DataBaseError
	}
	ret := map[int64]dbmodel.THouseholdUser{}
	for _, v := range list {
		ret[v.ID] = v
	}
	return ret, nil
}

func VoteResultList(ctx context.Context, req *pb_v1.VoteResultListRequest) (reply *pb_v1.VoteResultListReply, err error) {

	reply = &pb_v1.VoteResultListReply{}

	// 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"))
			}
		}
	}()
	// 参数检查
	err = checkVoteResultListParam(req)
	if err != nil {
		return nil, err
	}
	dbname := utils.GetGardenDbName(req.GardenId)

	vote, err := getVoteOrigin(dbname, req.Id)
	if err != nil {
		return nil, err
	}
	var target *pb_v1.VoteTopic
	for _, v := range vote.Topics {
		if v.Number == req.Number {
			target = v
			break
		}
	}
	if target == nil {
		return nil, errors.ErrRecordNotFound
	}
	choiceM := map[string]string{}
	for _, v := range target.ChoiceItems {
		choiceM[v.Flag] = v.Text
	}

	p := dbmodel.VoteAnswer{}
	list := []dbmodel.VoteAnswer{}

	exist, err := dbmodel.CheckDbExist(parser.Session, dbmodel.VoteMgoDb)
	if err != nil {
		return nil, errors.DataBaseError
	}
	if !exist {
		return reply, nil
	}
	collection := parser.Session.DB(dbmodel.VoteMgoDb).C(dbmodel.VoteCollection(req.GardenId, req.Id))

	reply.Total, err = p.Count(collection, nil)
	if err != nil {
		logger.Error("mgo",
			zap.String("error", err.Error()))
		return nil, errors.DataBaseError
	}
	if reply.Total == 0 {
		return reply, nil
	}

	err = p.List(collection, nil, int(req.PageSize), int(req.PageSize*(req.Page-1)), "", &list)
	if err != nil {
		logger.Error("mgo",
			zap.String("error", err.Error()))
		return nil, errors.DataBaseError
	}
	reply.Page = req.Page
	reply.List = make([]*pb_v1.VoteResultUserAnswerItem, len(list))

	uids := make([]int64, len(list))
	for i, _ := range list {
		uids[i] = list[i].Uid
	}
	userInfoM, err := getUserInfo(uids, dbname)
	if err != nil {
		return nil, err
	}

	for i, v := range list {

		for _, a := range v.Answers {
			if a.Number != req.Number {
				continue
			}
			// 将标签(A,b,c,d)替换为具体的选项类容
			for j, sub := range a.ChoiceAnswer {
				a.ChoiceAnswer[j] = choiceM[sub]
			}

			answer := &pb_v1.VoteResultData{
				TopicType: target.TopicType,
				TopicName: target.TopicName,
				// 总星数，当为评分题时有效
				Star: target.Star,
				// 是否必选
				Must: target.Must,
				// 题目编号
				Number: target.Number,
				// 选择题的选项
				ChoiceItems: target.ChoiceItems,
				// 问答题回答，当题目类型为问答题时有效
				CompletionAnswers: a.CompletionAnswer,
				// 选择题回答，当题目类型为选择题时有效
				ChoiceAnswers: a.ChoiceAnswer,
				// 评分题回答，当题目类型为评分题时有效
				StarAnswers: a.StarAnswer,
			}
			reply.List[i] = &pb_v1.VoteResultUserAnswerItem{
				Uid:      v.Uid,
				Answer:   answer,
				UserName: userInfoM[v.Uid].NickName,
			}
			break
		}
	}

	return reply, nil
}