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

package gate

import (
	"context"
	"crypto/rc4"
	"encoding/json"
	"fmt"
	"git.getensh.com/common/gopkgs/logger"
	"go.uber.org/zap"
	"google.golang.org/grpc/status"
	"property-household/parser"
	"property-household/pb"
	pb_v1 "property-household/pb/v1"
	"time"
)

func Rc4Encrypt(plain string, key string) string {
	dest := make([]byte, len(plain))
	cipher2, _ := rc4.NewCipher([]byte(key))
	cipher2.XORKeyStream(dest, []byte(plain))
	return fmt.Sprintf("%X", dest)
}

func checkGateQcodeParam(req *pb_v1.GateQcodeRequest) error {
	switch {
	case req.DeviceId == 0 && req.Visitor:
		return status.Error(10003, "设备id不能为空")
	case req.GardenId < 1:
		return status.Error(10003, "小区不能为空")
	case req.Uid < 1:
		return status.Error(10003, "用户不能为空")
	case req.Visitor:
		if req.VisitorEnd < 1 || req.VisitorStart < 1 {
			return status.Error(10003, "访客邀约请选择时间段")
		}
		if req.VisitorEnd-req.VisitorStart > 3600*24 {
			return status.Error(10003, "访客二维码时间不能超过一天")
		}

	}
	return nil
}

//
func GateQcode(ctx context.Context, req *pb_v1.GateQcodeRequest) (reply *pb_v1.GateQcodeReply, err error) {

	reply = &pb_v1.GateQcodeReply{}

	// 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"))
			}
		}
	}()

	if err = checkGateQcodeParam(req); err != nil {
		return nil, err
	}
	now := time.Now()
	str := fmt.Sprintf("[%d,%d,%s,%s,0,0,A]",
		req.Uid,
		req.GardenId,
		now.Add(-30*time.Second).Format("20060102150405"),
		now.Add(180*time.Second).Format("20060102150405"))
	if !req.Visitor {
		reply.Qcode = "CB01" + Rc4Encrypt(str, parser.Conf.GateKey)
		return reply, nil
	}

	if req.VisitorName == "" || req.VisitorName == "" || req.Comment == "" {
		return nil, status.Error(10003, "访客信息和是由不能为空")
	}

	mreq := pb_v1.GateVisitorAddRequest{
		Uid:          req.Uid,
		Name:         req.UserName,
		Phone:        req.Phone,
		Visitor:      req.VisitorName,
		VisitorPhone: req.VisitorPhone,
		DeviceId:     req.DeviceId,
		GardenId:     req.GardenId,
		Start:        req.VisitorStart,
		End:          req.VisitorEnd,
		Comment:      req.Comment,
	}
	mreply, err := pb.Device.GateVisitorAdd(ctx, &mreq)
	if err != nil {
		return nil, err
	}

	reply.Qcode = mreply.Qcode
	reply.Id = mreply.Id

	return reply, nil

}