package main

import (
	"context"
	"runtime/debug"
	"sync"
	"time"

	"github.com/sirupsen/logrus"

	"lc/common/mqtt"
	"lc/common/protocol"
	"lc/common/util"
)

var _onceITSDeviceMgr sync.Once
var _singleITSDeviceMgr *ITSDeviceMgr

func GetITSDeviceMgr() *ITSDeviceMgr {
	_onceITSDeviceMgr.Do(func() {
		ctx, cancel := context.WithCancel(context.Background())
		_singleITSDeviceMgr = &ITSDeviceMgr{
			Queue:          util.NewQueue(2000),
			MapITSDevice:   make(map[string]*ITSDevice),
			ctx:            ctx,
			cancel:         cancel,
			downQueue:      util.NewQueue(100),
			mapTopicHandle: make(map[string]func(m mqtt.Message)),
		}

	})
	return _singleITSDeviceMgr
}

type ITSDeviceMgr struct {
	Queue          *util.MlQueue         //数据队列，来自SDK
	MapITSDevice   map[string]*ITSDevice //TollgateID->ITSDevice
	logouts        []string              //退出登陆的userid
	logoutsmu      sync.Mutex
	ctx            context.Context
	cancel         context.CancelFunc
	downQueue      *util.MlQueue
	mapTopicHandle map[string]func(m mqtt.Message)
}

func (o *ITSDeviceMgr) LoadITSDevice() {
	for _, v := range itsConfig.Its {
		o.MapITSDevice[v.TollgateID] = NewITSDevice(v.TollgateID, v.ID, v.User, v.Password, v.IP, v.Port)
	}
	o.mapTopicHandle[GetTopic(protocol.DT_GATEWAY, appConfig.GID, protocol.TP_GW_ITS)] = o.HandleTpGwIts
	GetMQTTMgr().Subscribe(GetTopic(protocol.DT_GATEWAY, appConfig.GID, protocol.TP_GW_ITS), mqtt.AtMostOnce, o.HandleMessage, ToAll)
}

func (o *ITSDeviceMgr) HandleMessage(m mqtt.Message) {
	o.downQueue.Put(m)
}

// HandleTpGwIts 上报配置信息
func (o *ITSDeviceMgr) HandleTpGwIts(m mqtt.Message) {
	var obj protocol.Pack_IDObject
	if err := obj.DeCode(m.PayloadString()); err != nil {
		return
	}
	if obj.Gid != appConfig.GID {
		return
	}
	var ret protocol.Pack_ITSDev
	if str, err := ret.EnCode(appConfig.GID, obj.Seq, &itsConfig); err == nil {
		GetMQTTMgr().Publish(GetTopic(protocol.DT_GATEWAY, appConfig.GID, protocol.TP_GW_ITS_ACK), str, 0, ToCloud)
	}
}

func (o *ITSDeviceMgr) CheckOnline(dev *ITSDevice, online uint8) {
	var obj protocol.Pack_IPCState
	if str, err := obj.EnCode(dev.CamID, appConfig.GID, GetNextUint64(), util.MlNow(), online); err == nil {
		GetMQTTMgr().Publish(GetTopic(protocol.DT_ITS, dev.CamID, protocol.TP_ITSDEV_STATE), str, mqtt.AtMostOnce, ToCloud)
	}
}

func (o *ITSDeviceMgr) CheckLogin() {
	for _, v := range o.MapITSDevice {
		if v.UserID != "" {
			o.CheckOnline(v, protocol.SUCCESS)
			continue
		}
		if err := v.Login(); err == nil {
			logrus.Infof("抓拍单元[%s]SDK登陆成功", v.CamID)
			if bdi, err := v.GetDeviceStatus(); err == nil {
				logrus.Infof("获取抓拍单元[%s]信息成功，信息内容:%v", v.CamID, bdi)
			} else {
				logrus.Errorf("获取抓拍单元[%s]信息失败:%s", v.CamID, err.Error())
			}
			if err := v.SetPicStreamDataCallback(); err != nil {
				logrus.Errorf("抓拍单元[%s]执行SetPicStreamDataCallback失败:%s", v.CamID, err.Error())
			}
			//if err := v.Reboot(); err != nil {
			//	logrus.Errorf("设备[%s]重启失败:%s", err.Error())
			//}
			v.Reconn = 0
			o.CheckOnline(v, protocol.SUCCESS)
		} else {
			v.Reconn++
			o.CheckOnline(v, protocol.FAILED)
			logrus.Errorf("抓拍单元[%s]SDK登陆失败:%s,已重连%d次", v.CamID, err.Error(), v.Reconn)
		}
	}
}

func (o *ITSDeviceMgr) HandleLogout() {
	o.logoutsmu.Lock()
	defer o.logoutsmu.Unlock()
	for _, v := range o.logouts {
		for _, dev := range o.MapITSDevice {
			if v == dev.UserID {
				dev.StopMediaStream()
				dev.UserID = ""
				logrus.Warnf("%s logout.", dev.CamID)
				break
			}
		}
	}
	o.logouts = nil
}

func (o *ITSDeviceMgr) NotifyLogout(userid string) {
	o.logoutsmu.Lock()
	defer o.logoutsmu.Unlock()
	o.logouts = append(o.logouts, userid)
}

func (o *ITSDeviceMgr) PushData(data *tagVehicleInfo) {
	o.Queue.Put(data)
}

func (o *ITSDeviceMgr) HandleData(data *tagVehicleInfo) {
	s, ok := o.MapITSDevice[data.TollgateID]
	if ok {
		data.CamID = s.CamID
		s.ToStatic(data)
	}
	GetWebSvr().Update(data)

	if itsConfig.RemotePub > 0 {
		o.RemotePub(data)
	}
}

func (o *ITSDeviceMgr) SendData(t time.Time) {
	for _, v := range o.MapITSDevice {
		v.SendStatic(t)
	}
}

func (o *ITSDeviceMgr) RemotePub(data *tagVehicleInfo) {
	var obj protocol.Pack_VehicleSpeed
	vs := protocol.VehicleSpeed{
		Plate: data.VehiclePlate,
		Time:  protocol.BJTime(data.PassTime),
		Type:  data.VehicleType,
		Speed: data.VehicleSpeed,
	}
	if str, err := obj.EnCode(data.CamID, appConfig.GID, GetNextUint64(), &vs); err == nil {
		topic := GetTopic(protocol.DT_ITS, data.CamID, protocol.TP_ITS_VEHICLESPEED)
		GetMQTTMgr().Publish(topic, str, 0, ToCloud)
	}
}

func (o *ITSDeviceMgr) Handle(args ...interface{}) interface{} {
	defer func() {
		if err := recover(); err != nil {
			logrus.Errorf("ITSDeviceMgr.HandleData发生异常:%v", err)
			logrus.Errorf("ITSDeviceMgr.HandleData发生异常,堆栈信息:%s", string(debug.Stack()))
			gopool.Add(o.Handle, args)
		}
	}()
	o.CheckLogin()
	timer := time.NewTicker(1 * time.Minute)
	currHour := util.New(util.MlNow()).BeginningOfHour() //data time
	LastHour := currHour.Add(1 * time.Hour)              //send time
	exit := false
	for {
		select {
		case <-o.ctx.Done():
			exit = true
		case <-timer.C:
			o.HandleLogout()
			o.CheckLogin()
		default:
			if util.MlNow().After(LastHour) {
				o.SendData(currHour)
				currHour = currHour.Add(1 * time.Hour)
				LastHour = currHour.Add(1 * time.Hour)
			}
			//从队列钟获取指令执行
			if m, ok, _ := o.downQueue.Get(); ok {
				if mm, ok := m.(mqtt.Message); ok {
					if fn, ok := o.mapTopicHandle[mm.Topic()]; ok {
						fn(mm)
					} else {
						logrus.Errorf("ITSDeviceMgr.Handle:不支持的主题:%s", mm.Topic())
					}
				}
			}
			if v, ok, _ := o.Queue.Get(); ok {
				if vi, ok := v.(*tagVehicleInfo); ok {
					o.HandleData(vi)
				}
			} else {
				if exit {
					logrus.Warnf("ITSDeviceMgr.HandleData退出,原因:%v", o.ctx.Err())
					return 0
				}
				time.Sleep(50 * time.Millisecond)
			}
		}
	}
}