package main

import (
	"context"
	"encoding/json"
	"fmt"
	"github.com/go-redis/redis/v8"
	"hilo-micCenter/common/dingding"
	"hilo-micCenter/common/mylogrus"
	"hilo-micCenter/common/redisCli"
	"hilo-micCenter/common/tencentyun"
	"time"
)

const SEND_WORKER = 2000   // 消费端协程数量
const MONITOR_LENGTH = 100 // 队列告警数量

var sendChan chan GroupSystemMsg

func main() {
	//if !config.IsMaster() {
	//	return
	//}
	mylogrus.MyLog.Infof("cron micChangeSys start")
	// 8核 n send + 4 blpop
	sendChan = make(chan GroupSystemMsg, SEND_WORKER)
	for i := 0; i < 4; i++ {
		go func() {
			deal()
		}()
	}
	for i := 0; i < SEND_WORKER; i++ {
		go func() {
			send()
		}()
	}
	go check()
	select {}
}

func check() {
	tick := time.NewTicker(time.Second * 3)
	defer tick.Stop()
	for {
		select {
		case <-tick.C:
			l, err := redisCli.GetRedisCluster().LLen(context.Background(), micInfoChange).Result()
			if err != nil {
				mylogrus.MyLog.Errorf("cron micChangeSys msg error,left %v-%v", l, err)
			}
			if l > MONITOR_LENGTH {
				go func() {
					if sErr := dingding.SendDingRobot(dingding.ROBOTWEBHOOK, fmt.Sprintf("麦位变化通知延迟,队列%s长度:%d", micInfoChange, l), true); sErr != nil {
						mylogrus.MyLog.Errorf("dingding msg fail:%v", sErr)
					}
				}()
			}
			if l > 0 {
				mylogrus.MyLog.Infof("cron micChangeSys msg,left %v", l)
			}
		}
	}
}

func deal() {
	for true {
		//不需要加锁，注意，阻塞。
		strs, err := redisCli.GetRedisCluster().BLPop(context.Background(), time.Second, micInfoChange).Result()
		if err != nil {
			if err != redis.Nil {
				mylogrus.MyLog.Errorf("cron micChangeSys redisCli.GetRedis().BLPop err:+%v", err)
			}
		}
		if len(strs) >= 2 {
			content := strs[1]
			//mylogrus.MyLog.Infof("cron micChangeSys content:%v", content)
			micSystemMsg := MicSystemMsg{}
			if err := json.Unmarshal([]byte(content), &micSystemMsg); err != nil {
				mylogrus.MyLog.Errorf("cron micChangeSys Unmarshal err:%+v, content:%v", err, content)
			}
			sendChan <- GroupSystemMsg{
				MsgGroupUid: micSystemMsg.GroupUid,
				MsgId:       micSystemMsg.MsgId,
				Source:      micSystemMsg.Source,
				Target:      micSystemMsg.Target,
				Content:     micSystemMsg.Content,
			}
		}
	}
}

//var limiter = rate.NewLimiter(2000, 2000)

func send() {
	for msg := range sendChan {
		//if err := limiter.Wait(context.Background()); err == nil {
		SendSignalMsg(msg.MsgGroupUid, msg)
		//}
	}
}

const micInfoChange = "mic_info_change"

type MicSystemMsg struct {
	GroupUid string //房间ID
	Source   string
	Target   string
	MsgId    uint8
	Content  string //要发送的内容
}

type GroupSystemMsg struct {
	MsgGroupUid string `json:"-"`
	MsgId       uint8  `json:"msgId"`
	Source      string `json:"source"`
	Target      string `json:"target"`
	Content     string `json:"content"`
}

// SendSignalMsg 发送群信令。入参是内部imGroupId，这里做转换
func SendSignalMsg(groupId string, msg GroupSystemMsg) {
	buffer, err := json.Marshal(msg)
	if err == nil {
		str := string(buffer)
		//mylogrus.MyLog.Infof("cron micChangeSys SendSignalMsg: %s", str)
		logger := mylogrus.MyLog.WithField("msgId", msg.MsgId)

		if err = tencentyun.SendSystemMsg(logger, groupId, []string{}, str); err != nil {
			mylogrus.MyLog.Errorf("cron micChangeSys SendSignalMsg sync failed for %s, msgId = %d, content:%v, err:%+v", groupId, msg.MsgId, str, err)
			content := fmt.Sprintf("腾讯云推送失败,group:%v,msgId:%v,err:%v", groupId, msg.MsgId, err.Error())
			if err := dingding.SendDingRobot(dingding.ROBOTWEBHOOK, content, true); err != nil {
				mylogrus.MyLog.Errorf("cron micChangeSys SendSignalMsg send dingding fail%s", err.Error())
			}
		} else {
			//mylogrus.MyLog.Infof("cron micChangeSys SendSignalMsg sync success for %s, msgId = %d, content:%v", groupId, msg.MsgId, str)
		}
	} else {
		mylogrus.MyLog.Errorf("cron micChangeSys SendSignalMsg failure, msgId = %d : %s , msg:%+v", msg.MsgId, err.Error(), msg)
	}
}