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

package park_space

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"
	"gorm.io/gorm"
	"property-garden/errors"
	"property-garden/impl/v1/charge_utils"
	dbmodel "property-garden/model"
	pb_v1 "property-garden/pb/v1"
	"property-garden/utils"
	"strings"
	"time"
)

const (
	BindTypeNormal = 1
	BindTypeSell = 2
	BindTypeRent = 3

)
func checkParkSpaceUpdateParam(req *pb_v1.ParkSpaceUpdateRequest) error {
	switch {
	case req.ParkId < 1:
		return status.Error(10003, "停车场不能为空")
	case req.SpaceNumber == "":
		return status.Error(10003, "车位编号不能为空")
	case req.SpaceType < 1:
		return status.Error(10003, "车位类型不能为空")
	case req.Id < 1:
		return status.Error(10003, "id 不能为空")
	case req.GardenId < 1:
		return status.Error(10003, "小区不能为空")
	case req.SpaceArea == 0:
		return status.Error(10003, "车位面积不能为空")
	}
	return nil

}

func updateChargeBindArea(spaceId int64, area float64, db *gorm.DB, dbname string) error {
	p := dbmodel.NewChargeBind(dbname)
	where := map[string]interface{}{
		"obj_id":spaceId,
		"obj_type":charge_utils.ObjTypeSpace,
		"charge_basis":charge_utils.ChargeBasisSpaceArea,
	}
	value := map[string]interface{}{
		"obj_area":area,
	}
	err := p.Update(db, where, value)
	if err != nil {
		return errors.DataBaseError
	}
	return nil
}

//
func ParkSpaceUpdate(ctx context.Context, req *pb_v1.ParkSpaceUpdateRequest) (reply *pb_v1.ParkSpaceUpdateReply, err error) {

	reply = &pb_v1.ParkSpaceUpdateReply{}

	// 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 = checkParkSpaceUpdateParam(req)
	if err != nil {
		return nil, err
	}
	dbname := utils.GetGardenDbName(req.GardenId)
	park := dbmodel.NewPark(dbname)
	where := map[string]interface{}{
		"id":req.ParkId,
		//"garden_id":req.GardenId,
	}

	err = park.Find(database.DB(), where)
	if err != nil && err != gorm.ErrRecordNotFound{
		return nil, errors.DataBaseError
	}
	if park.ID == 0 {
		return nil, errors.ErrRecordNotFound
	}

	now := time.Now()
	p := dbmodel.NewParkSpace(dbname)
	where = map[string]interface{}{
		"id":req.Id,
		//"garden_id":req.GardenId,
	}

	values := map[string]interface{}{
		"space_number":req.SpaceNumber,
		"space_type":req.SpaceType,
		"space_area":req.SpaceArea,
		"park_id":req.ParkId,
		"comment":req.Comment,
		"house_id":req.HouseId,
		"updated_at":now,
	}



	old := dbmodel.NewParkSpace(dbname)
	err = old.Find(database.DB(), where)

	if err != nil && err != gorm.ErrRecordNotFound{
		return nil, errors.DataBaseError
	}
	if old.ID == 0 {
		return nil, errors.ErrRecordNotFound
	}

	if req.HouseId > 0 {
		values["status"] = SpaceStatusSell
		values["bind_status"] = SpaceBindStatusBind
	} else if old.VehicleId == 0 {
		values["status"] = SpaceStatusEmpty
		values["bind_status"] = SpaceBindStatusEmpty
	}
	if old.ParkId != req.ParkId || old.SpaceNumber != req.SpaceNumber ||
		(old.HouseId > 0 && req.HouseId != old.HouseId){
		isBind, err := charge_utils.IsObjBindCharge(req.Id, charge_utils.ObjTypeSpace, dbname)
		if err != nil {
			return nil, err
		}
		if isBind {
			return nil, status.Error(10003, "该车位已绑定费用，请先解除绑定")
		}
	}


	reply.Origin = &pb_v1.ParkSpaceUpdateRequest{
		Id:req.Id,
		ParkId:old.ParkId,
		Comment:old.Comment,
		GardenId:req.GardenId,
		SpaceArea:old.SpaceArea,
		SpaceType:old.SpaceType,
		SpaceNumber:old.SpaceNumber,
	}
	db := database.DB().Begin()
	defer func() {
		if err != nil {
			db.Rollback()
		}
	}()
	err = p.Update(db, where, values)
	if err != nil {
		if strings.Contains(strings.ToLower(err.Error()), "duplicate") {
			return nil, status.Error(10003, "该车位已存在")
		}

		return nil, errors.DataBaseError
	}

	if req.SpaceArea != old.SpaceArea {
		err = updateChargeBindArea(req.Id, req.SpaceArea, db, dbname)
		if err != nil {

			return nil, err
		}
	}
	if  req.HouseId > 0 && req.HouseId != old.HouseId && old.VehicleId > 0 {
		// 检查新房屋id与车辆所属用户的房屋是否匹配
		veh := dbmodel.NewVehicle(dbname)
		filter := map[string]interface{}{
			"id":old.VehicleId,
		}
		err = veh.Find(database.DB(), filter)
		if err != nil && err != gorm.ErrRecordNotFound {

			return nil, errors.DataBaseError
		}
		if veh.ID > 0 {
			if veh.BindType == BindTypeRent {
				return nil, status.Error(10003, fmt.Sprintf("该车位已出租给车辆%s，无法绑定房屋", veh.PlateNo))
			}
			household := dbmodel.NewHouseApprovedGarden(dbname)
			filter = map[string]interface{}{
				"uid":veh.HouseholdUid,
				"house_id":req.HouseId,
			}
			count, err := household.Count(db, where, nil)
			if err != nil {
				return nil, errors.DataBaseError
			}
			if count == 0 {
				return nil, status.Error(10003, "该车位以出售方式绑定车辆, 车辆所属业主未申请该房屋")
			}
		}
	}

	db.Commit()
	return reply, nil
}