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

package house

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

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

func checkUnitUpdateParam(req *pb_v1.UnitUpdateRequest) error {
	switch {
	case req.UnitNumber < 0:
		return status.Error(10003, "单元编号不能为空")
	case req.UnitName == "":
		return status.Error(10003, "单元名称名称不能为空")
	case req.UnitLayers < 1:
		return status.Error(10003, "层数不能为空")
	case req.GardenId < 1:
		return status.Error(10003, "小区不能为空")
	case req.BuildingId < 1:
		return status.Error(10003, "楼栋id不能为空")
	case req.Id < 1:
		return status.Error(10003, "id 不能为空")

	}
	return nil
}


//
func UnitUpdate(ctx context.Context, req *pb_v1.UnitUpdateRequest) (reply *pb_v1.UnitUpdateReply, err error) {

	reply = &pb_v1.UnitUpdateReply{}

	// 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"))
			}
		}
	}()

	err = checkUnitUpdateParam(req)
	if err != nil {
		return nil, err
	}
	dbname := utils.GetGardenDbName(req.GardenId)
	oldUnit := dbmodel.NewUnit(dbname)
	where := map[string]interface{}{
		"id":req.Id,
		//"garden_id":req.GardenId,
	}
	err = oldUnit.Find(database.DB(), where)
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.DataBaseError
	}
	if oldUnit.ID == 0 {
		return nil, errors.ErrRecordNotFound
	}

	reply.Origin = &pb_v1.UnitUpdateRequest{
		Id:req.Id,
		GardenId:req.GardenId,
		UnitNumber:oldUnit.UnitNumber,
		UnitLayers:oldUnit.UnitLayers,
		UnitName:oldUnit.UnitName,
		BuildingId:oldUnit.BuildingId,
	}
	if oldUnit.HasLift == 1 {
		reply.Origin.HasLift = true
	}

	newBuilding := dbmodel.NewBuilding(dbname)
	where = map[string]interface{}{
		"id":req.BuildingId,
		//"garden_id":req.GardenId,
	}
	err = newBuilding.Find(database.DB(), where)
	if err != nil && err != gorm.ErrRecordNotFound {
		return nil, errors.DataBaseError
	}
	if newBuilding.ID == 0 {
		return nil, errors.ErrRecordNotFound
	}

	if req.BuildingId != oldUnit.BuildingId || req.UnitNumber != oldUnit.UnitNumber {
		house := dbmodel.NewHouse(dbname)
		where := map[string]interface{}{
			"unit_id":req.Id,
			"status >":HouseStatusWait,
		}
		count, err := house.Count(database.DB(), where, nil)
		if err != nil {
			return nil, errors.DataBaseError
		}
		if count > 0 {
			return nil, status.Error(10003, "已入住房屋, 不能修改房屋编号，单元号，楼栋号")
		}
	}


	hasLift := int64(2)
	if req.HasLift {
		hasLift = 1
	}
	now := time.Now()
	unit := dbmodel.NewUnit(dbname)
	values := map[string]interface{}{
		"unit_name":req.UnitName,
		"unit_number":req.UnitNumber,
		"unit_layers":req.UnitLayers,
		"building_id":req.BuildingId,
		"has_lift":hasLift,
		"updated_at":      now,
	}
	db := database.DB().Begin()
	where = map[string]interface{}{
		"id":req.Id,
		//"garden_id":req.GardenId,
	}
	err = unit.Update(db, where, values)
	if err != nil {
		if strings.Contains(strings.ToLower(err.Error()), "duplicate") {
			db.Rollback()
			return nil, errors.ErrRecordExist
		}
		db.Rollback()
		return nil, errors.DataBaseError
	}

	// 更新房屋
	house := dbmodel.NewHouse(dbname)
	where = map[string]interface{}{
		"unit_id":req.Id,
	}
	values = map[string]interface{}{}
	if oldUnit.HasLift != hasLift {
		values["has_lift"] = hasLift
	}
	if req.BuildingId != oldUnit.BuildingId {
		values["building_id"] = req.BuildingId
	}

	if len(values) > 0 {
		err = house.Update(database.DB(), where, values)
		if err != nil {
			db.Rollback()
			return nil, errors.DataBaseError
		}
	}

	if req.BuildingId != oldUnit.BuildingId || req.UnitNumber != oldUnit.UnitNumber {
		if err = RefuseHouseApply(req.GardenId, oldUnit.BuildingId, oldUnit.ID, 0); err != nil {
			db.Rollback()
			return nil, err
		}
	}
	if hasLift != oldUnit.HasLift {
		mreq := pb_v1.HouseRentChangeFieldRequest{
			GardenId:req.GardenId,
			UnitId:req.Id,
			HasLift:req.HasLift,
		}
		err = houseRentChangeField(&mreq, db, dbname)
		if err != nil {
			db.Rollback()
			return nil, err
		}
	}


	db.Commit()

	return reply, nil
}