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

package statistic

import (
	"context"
	"encoding/json"
	"fmt"
	"git.getensh.com/common/gopkgs/database"
	"gorm.io/gorm"
	"property-company/errors"
	dbmodel "property-company/model"
	"property-company/pb"
	pb_v1 "property-company/pb/v1"
	"time"

	"git.getensh.com/common/gopkgs/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
)

const (
	ObjTypeHouse  = 1
	ObjTypeSpace  = 2
	ObjTypeGarden = 3
	ObjTypeUser   = 4
)

func checkCompanyObjStatisticSetParam(req *pb_v1.CompanyObjStatisticSetRequest) error {

	switch {
	case req.GardenId == 0 && req.Cid == 0:
		return status.Error(10003, "小区和公司不能同时为空")
	case req.ObjType == 0:
		return status.Error(10003, "类型不能为空")
	}
	return nil
}

func getCidByGarden(gardenId int64) (int64, error) {
	mreq := pb_v1.GardenInfosRequest{Ids: []int64{gardenId}}
	mreply, err := pb.System.GardenInfos(context.Background(), &mreq)
	if err != nil {
		return 0, err
	}
	if len(mreply.List) == 0 {
		return 0, errors.ErrRecordNotFound
	}
	return mreply.List[0].Cid, nil
}

func CompanyObjStatisticSetWithDb(req *pb_v1.CompanyObjStatisticSetRequest, db *gorm.DB) error {
	now := time.Now()

	if req.Cid == 0 {
		cid, err := getCidByGarden(req.GardenId)
		if err != nil {
			return err
		}
		req.Cid = cid
	}

	where := map[string]interface{}{
		"cid":      req.Cid,
		"obj_type": req.ObjType,
	}
	values := map[string]interface{}{}
	if req.TotalIncrease > 0 {
		values["total"] = gorm.Expr("total + ?", req.TotalIncrease)
	} else if req.TotalIncrease < 0 {
		values["total"] = gorm.Expr("total - ?", 0-req.TotalIncrease)
	}

	if len(values) == 0 {
		return nil
	}
	p := dbmodel.TStatisticObj{}
	affected, err := p.UpdateAffected(db, where, values)
	if err != nil {
		return errors.DataBaseError
	}
	if affected > 0 {
		return nil
	}
	p.ObjType = req.ObjType
	p.CreatedAt = now
	p.UpdatedAt = now
	p.Cid = req.Cid

	p.Total = req.TotalIncrease

	err = p.Insert(db)
	if err != nil {
		return errors.DataBaseError
	}
	return nil

}

func CompanyObjStatisticSet(ctx context.Context, req *pb_v1.CompanyObjStatisticSetRequest) (reply *pb_v1.CompanyObjStatisticSetReply, err error) {

	reply = &pb_v1.CompanyObjStatisticSetReply{}

	// 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 = checkCompanyObjStatisticSetParam(req)
	if err != nil {
		return nil, err
	}
	err = CompanyObjStatisticSetWithDb(req, database.DB())
	return reply, err
}