package busmodels

import (
	"device-manage/common/log"
	model "device-manage/common/mqttcli/flatbuffer/models"
	"device-manage/pkg/ws"
	tools "device-manage/tools"
	"encoding/json"
	"fmt"
	"time"

	"github.com/muesli/cache2go"
)

/*
DeviceSn 设备序列号
TimerFinishType  定时结束类型

*/

const (
	cacheName = "devicetimer"
)

type DeviceTimer struct {
	DeviceSn string `json:"deviceSn" gorm:"size:128;"`
}

func DeviceTimerSetup() {
	cache := cache2go.Cache(cacheName)
	// cache2go supports a few handy callbacks and loading mechanisms.
	cache.SetAboutToDeleteItemCallback(func(e *cache2go.CacheItem) {
		fmt.Println("Deleting:", e.Key(), e.Data().(*DeviceTimer).DeviceSn, e.CreatedOn())
		//todo delete media source
		fmt.Println(e.LifeSpan().Seconds())
		fmt.Println(e.CreatedOn().Unix())
		fmt.Println(time.Now().Unix())
		//要区分手动删除设备和超时删除设备. 超时删除要更新数据库,
		if time.Now().Unix()-e.CreatedOn().Unix() >= int64(e.LifeSpan().Seconds()) {
			fmt.Println("heartbeat timeout device offline:", e.Data().(*DeviceTimer).DeviceSn)
			var dev BusDevice
			dev.DeviceSn = e.Data().(*DeviceTimer).DeviceSn
			dev, _ = dev.GetDeviceByDeviceSn()
			devId := dev.DeviceId
			dev.DeviceId = 0
			dev.Status = DeviceStatusOffline
			dev.OnlineTime = DeviceInitTime
			if _, err := dev.UpdateByMap(devId); err != nil {
				log.Info(err)
			}
			devArry, _ := json.Marshal(dev)
			ws.WebsocketManager.SendAll(devArry)
		} else {
			fmt.Println("手动删除缓存.")
		}
	})
	initDevices()

}

//启动时, 初始化检查当前设备状态,如果历史上设备在线,给设备重新添加超时,检测设备是否离线.
func initDevices() {
	var dev BusDevice
	var devtimer DeviceTimer
	devs, err := dev.GetOnlineDevices()
	if err != nil {
		return
	}

	for _, devInfo := range devs {
		devtimer.DeviceSn = devInfo.DeviceSn
		devtimer.AddDevice()
		fmt.Println("init device:", devInfo.DeviceSn)
	}
}

//查询缓存是否存在.
func (e *DeviceTimer) GetDevice() error {
	//添加数据
	cache := cache2go.Cache(cacheName)

	res, err := cache.Value(e.DeviceSn)
	if err == nil {
		fmt.Println("Found Device in cache:", res.Data().(*DeviceTimer).DeviceSn)
	} else {
		fmt.Println("Error retrieving value from cache:", err)
		return err
	}
	return nil
}

func (e *DeviceTimer) AddDevice() (err error) {
	//添加数据
	cache := cache2go.Cache(cacheName)
	//如果有先清除历史
	if cache.Exists(e.DeviceSn) {
		cache.Delete(e.DeviceSn)
	}
	//添加 超时时间
	cache.Add(e.DeviceSn, 3*time.Minute, e)

	return nil
}

//delete device
func (e *DeviceTimer) DeleteDevice() (err error) {
	cache := cache2go.Cache(cacheName)
	if _, err := cache.Delete(e.DeviceSn); err != nil {
		return err
	}
	fmt.Println("delete device:", e.DeviceSn)
	return nil
}

//设备在线心跳,更新设备信息
func DevicesHeartBeat(devInfo *model.Heartbeat) {
	var err error
	var dev BusDevice
	var devtimer DeviceTimer
	dev.DeviceSn = devInfo.Serial
	//设备不存在, 设备上线也直接抛弃数据,不能接入系统.
	if !dev.IsExist() {
		return
	}
	//history db data
	dbDevice, _ := dev.Get()
	dev.DeviceIp = devInfo.DeviceIp
	dev.ServerIp = devInfo.ServerIp
	dev.Status = devInfo.Status
	dev.Gps = devInfo.Gps
	dev.Nettype = devInfo.Nettype
	dev.DeviceType = devInfo.Devtype

	//设备存在,有两种状态, a. 已经注册状态 b. 未注册状态
	//先判断当前设备是否已经完成注册
	//a. 设备未注册, 先进行设备注册,在更新设备状态信息
	time := time.Now()
	if !dev.IsRegist() {
		dev.DeviceName = devInfo.Serial
		dev.Status = DeviceStatusOnline
		dev.IsRegister = 1
		dev.RegisterTime = time
		dev.OnlineTime = DeviceInitTime
		dev.TotallTime = DeviceInitTime
		dev.LastTime = time
		if _, err = dev.Update(dbDevice.DeviceId); err != nil {
			log.Info(dev.DeviceSn + " error")
			return
		}
		fmt.Println("device register.")
	} else {
		//deviceInfo.TotallTime
		//b. 设备已注册, 更新设备状态信息
		//设备状态又分为 status:1 在线  status:0 离线.
		//1. 设备在线信息上报.
		if dev.Status == DeviceStatusOnline {
			devtimer.DeviceSn = dbDevice.DeviceSn
			devtimer.AddDevice()
			dev.LastTime = time
			//设备在线又分为设备启动首次上线(history last status:0)和正常在线(history last status:1).
			//设备上一次在线
			if dbDevice.Status == DeviceStatusOnline {
				updateTime := dev.LastTime.Unix() - dbDevice.LastTime.Unix()
				//当前在线时间加上最近一次更新的时间长度(当前LastTime减去历史LastTime的时间差)
				dev.OnlineTime = tools.TimeStamp2Time(tools.Time2TimeStamp(dbDevice.OnlineTime) + int(updateTime))
				//历史在线总时间加上最近一次更新时间长度(当前LastTime减去历史LastTime的时间差)
				dev.TotallTime = tools.TimeStamp2Time(tools.Time2TimeStamp(dbDevice.TotallTime) + int(updateTime))
			} else {
				//设备上一次离线
				dev.OnlineTime = DeviceInitTime
			}
			if _, err = dev.Update(dbDevice.DeviceId); err != nil {
				log.Info(dev.DeviceSn + " error")
				return
			}
			dev, _ := json.Marshal(dev)
			ws.WebsocketManager.SendAll(dev)

		}
		//使用cache2go, 设备主动报离线暂时处理不了, 先只做超时离线.
		/* else {
			//设备主动上报离线.
			dev.Status = 0
			dev.OnlineTime = "00:00:00"
			if _, err = dev.Update(dbDevice.DeviceId); err != nil {
				log.Info(dev.DeviceSn + " error")
				return
			}
		} */
	}
	//1. 设备存在,设备上线完成注册
	/* //todo get device log
	for _, devid := range IDS {
		fmt.Println(devid)
		dev.DeviceId = devid
		if devInfo, err = dev.Get(); err != nil {
			continue
		}
		if devInfo.Status > 0 {
			if _, ok := mqtthandler.MqttClientList[devInfo.ServerIp]; ok {
				mqtthandler.MqttClientList[devInfo.ServerIp].Reboot(devInfo.DeviceSn, "")
			}
		} else {
			log.Info("cmd reboot offline [%s]", devInfo.DeviceSn)
		}

	} */
	//app.OK(c, "", "重启成功.")
}