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

package charge

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"
	"property-garden/impl/v1/charge_utils"
	dbmodel "property-garden/model"
	pb_v1 "property-garden/pb/v1"
	"property-garden/utils"
)

func checkChargeBillObjListParam(req *pb_v1.ChargeBillObjListRequest) error {
	switch {
	case req.GardenId == 0:
		return status.Error(10003, "小区不能为空")
	}
	if req.Page == 0 {
		req.Page = 1
	}
	if req.PageSize == 0 {
		req.PageSize = 10
	}
	return nil

}

type ChargeBillObjItem struct {
	ObjName         string
	ObjId           int64
	ObjType         int32
	BillCount       int64
	ShouldPayAmount int64
}

func GetObjLateFee(objId int64, objType int32, chargeInfoM map[int64]dbmodel.TChargeConf, dbname string) (int64, error) {
	p := dbmodel.NewChargeBill(dbname)
	where := map[string]interface{}{
		"obj_id":   objId,
		"obj_type": objType,
	}
	page := 1
	ret := int64(0)
	for {
		list, err := p.List(database.DB(), where, nil, page, 10, "")
		if err != nil {
			return 0, errors.DataBaseError
		}
		if len(list) == 0 {
			return ret, nil
		}
		for _, v := range list {
			chargeInfo := chargeInfoM[v.ChargeId]
			lfee, _ := charge_utils.GetLateFee(v.Amount, v.ChargeEnd, &chargeInfo)
			ret += lfee
		}
		if len(list) < 10 {
			break
		}
	}
	return ret, nil
}
func ChargeBillObjList(ctx context.Context, req *pb_v1.ChargeBillObjListRequest) (reply *pb_v1.ChargeBillObjListReply, err error) {

	reply = &pb_v1.ChargeBillObjListReply{}

	// 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 = checkChargeBillObjListParam(req)
	if err != nil {
		return nil, err
	}
	dbname := utils.GetGardenDbName(req.GardenId)

	bill := dbmodel.NewChargeBill(dbname)
	result := []ChargeBillObjItem{}
	group := "obj_type, obj_id"
	selectStr := "obj_id, obj_type, obj_name,  sum(amount) as should_pay_amount, sum(1) as bill_count"
	where := map[string]interface{}{}
	reply.Total, err = bill.CountGroup(database.DB(), where, nil, group)
	if err != nil {
		return nil, errors.DataBaseError
	}
	reply.Page = req.Page
	if reply.Total == 0 {
		return reply, nil
	}
	err = bill.SelectGroup(database.DB(), where, nil,
		selectStr, group, int(req.Page), int(req.PageSize), &result)
	if err != nil {
		return nil, errors.DataBaseError
	}

	chargeInfoM, err := charge_utils.GetAllChargeInfos(dbname)
	if err != nil {
		return nil, err
	}
	reply.List = make([]*pb_v1.ChargeBillObjItem, len(result))
	for i, v := range result {

		item := &pb_v1.ChargeBillObjItem{
			ObjName:         v.ObjName,
			ObjId:           v.ObjId,
			ObjType:         v.ObjType,
			BillCount:       v.BillCount,
			ShouldPayAmount: v.ShouldPayAmount,
		}
		lateFee, err := GetObjLateFee(v.ObjId, v.ObjType, chargeInfoM, dbname)
		if err != nil {
			return nil, err
		}
		item.ShouldPayAmount += lateFee

		reply.List[i] = item
	}
	return reply, nil
}