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

package vehicle

import (
	"context"
	"encoding/json"
	"fmt"
	"gorm.io/gorm"
	"property-garden/errors"
	"property-garden/impl/v1/park_space"
	"property-garden/impl/v1/statistic"
	dbmodel "property-garden/model"
	pb_v1 "property-garden/pb/v1"
	"property-garden/utils"
	"time"

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

const (
	BindTypeNormal = 1
	BindTypeSell   = 2
	BindTypeRent   = 3
)

func checkVehicleAddParam(req *pb_v1.VehicleAddRequest) error {
	if req.SpaceId == 0 {
		//req.BindType = BindTypeNormal
	}
	switch {
	case req.GardenId == 0:
		return status.Error(10003, "小区不能为空")
	case req.PlateNo == "":
		return status.Error(10003, "车牌号不能为空")
	case req.Displacement < 1:
		//return status.Error(10003, "排量不能为空")
	case req.DisplacementUnit == "":
		//return status.Error(10003, "排量单位不能为空")
	case req.Seat < 1:
		//return status.Error(10003, "座位数不能为空")
	case req.BindType < 1:
		return status.Error(10003, "绑定类型不能为空")
	case req.SpaceId > 0 && req.BindType == BindTypeNormal:
		return status.Error(10003, "绑定类型错误")
	case req.HouseholdUid == 0:
		return status.Error(10003, "未绑定住户")
	case req.BindType == BindTypeSell && req.SpaceId == 0:
		return status.Error(10003, "出售类型请绑定车位")
	case req.BindType == BindTypeRent && req.SpaceId == 0:
		return status.Error(10003, "出租类型请绑定车位")

	}
	return nil
}

func checkHouseholdHouse(uid int64, houseId int64, dbname string) (bool, error) {
	p := dbmodel.NewHouseApprovedGarden(dbname)
	where := map[string]interface{}{
		"uid":      uid,
		"house_id": houseId,
	}
	count, err := p.Count(database.DB(), where, nil)
	if err != nil {
		return false, errors.DataBaseError
	}
	if count > 0 {
		return true, nil
	}
	return false, nil
}

func VehicleAdd(ctx context.Context, req *pb_v1.VehicleAddRequest) (reply *pb_v1.VehicleAddReply, err error) {

	reply = &pb_v1.VehicleAddReply{}

	// 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 = checkVehicleAddParam(req)
	if err != nil {
		return nil, err
	}
	now := time.Now()
	dbname := utils.GetGardenDbName(req.GardenId)

	bindType := req.BindType
	space := dbmodel.NewParkSpace(dbname)
	if req.SpaceId > 0 {
		where := map[string]interface{}{
			"id": req.SpaceId,
		}
		err = space.Find(database.DB(), where)
		if err != nil && err != gorm.ErrRecordNotFound {
			return nil, errors.DataBaseError
		}
		if space.ID == 0 {
			return nil, status.Error(10003, "车位不存在")
		}
		if space.VehicleId > 0 {
			return nil, status.Error(10003, "车位已绑定车辆")
		}
		if req.BindType == BindTypeSell && space.HouseId == 0 {
			return nil, status.Error(10003, "出售类型请先在车位配置中绑定房屋")
		}

		if space.HouseId > 0 {
			if req.BindType != BindTypeSell {
				return nil, status.Error(10003, "车位已出售,不能出租")
			}
			householdHasThisHouse, err := checkHouseholdHouse(req.HouseholdUid, space.HouseId, dbname)
			if err != nil {
				return nil, err
			}
			if !householdHasThisHouse {
				return nil, status.Error(10003, "车位已绑定房屋，该用户没有入驻该房屋")
			}
		}
	}
	if req.SpaceId == 0 {
		bindType = BindTypeNormal
	}

	veh := dbmodel.TVehicle{
		PlateNo:          req.PlateNo,
		VehicleType:      req.VehicleType,
		Vin:              req.Vin,
		EngineNo:         req.EngineNo,
		Brand:            req.Brand,
		Color:            req.Color,
		SpaceId:          req.SpaceId,
		ParkId:           space.ParkId,
		HouseholdUid:     req.HouseholdUid,
		BindType:         bindType,
		Displacement:     req.Displacement,
		DisplacementUnit: req.DisplacementUnit,
		Seat:             req.Seat,
		CreatedAt:        now,
		UpdatedAt:        now,
	}
	db := database.DB().Begin()
	defer func() {
		if err != nil {
			db.Rollback()
		}
	}()
	veh.SetTable(dbname)
	err = veh.Insert(db)
	if err != nil {
		return nil, errors.DataBaseError
	}
	if space.ID > 0 {
		where := map[string]interface{}{
			"id": req.SpaceId,
		}
		values := map[string]interface{}{
			"vehicle_id": veh.ID,
		}
		if bindType == BindTypeSell || bindType == BindTypeRent {
			values["status"] = bindType
			values["bind_status"] = park_space.SpaceBindStatusBind
		}
		err = space.Update(db, where, values)
		if err != nil {
			return nil, errors.DataBaseError
		}
	}

	mreq := pb_v1.ObjStatisticSetRequest{
		ObjType:       statistic.ObjTypeVehicle,
		TotalIncrease: int64(1),
		GardenId:      req.GardenId,
	}

	err = statistic.ObjStatisticSetWithDb(&mreq, db)

	if err != nil {
		return nil, err
	}

	db.Commit()

	reply.Id = veh.ID

	return reply, nil
}