package app

import (
	"fmt"
	"gitea.anxinyun.cn/container/common_models"
	"gitea.anxinyun.cn/container/common_utils"
	"gitea.anxinyun.cn/container/common_utils/configLoad"
	"log"
	"net/rpc"
	"node/et_worker/et_recv"
	"os"
	"os/signal"
	"syscall"
	"time"
)

type EtNode struct {
	nodeInfo        *common_models.NodeArgs
	master          *rpcMaster
	ch              chan *common_models.ProcessData
	recvDataHandler *et_recv.RecvDataHanler
}

type rpcMaster struct {
	conn *rpc.Client
	addr string
}

const chSize = 1

func NewEtWorker() *EtNode {
	node := &EtNode{
		ch:              make(chan *common_models.ProcessData, chSize),
		recvDataHandler: et_recv.NewRecvDataHanler(),
	}
	node.exitMonitor()
	node.heartMonitor()
	return node
}

// Handler 是 RPC 服务方法，由 master 远程调用
func (the *EtNode) Handler(iotaData common_models.IotaData, replay *bool) error {
	*replay = true
	err := the.ConsumerProcess(&iotaData)
	if err != nil {
		*replay = false
	}

	return err
}

// ConsumerProcess 将 IotaData -> ProcessData
func (the *EtNode) ConsumerProcess(iotaData *common_models.IotaData) error {
	deviceData, err := the.recvDataHandler.OnDataHandler(*iotaData)
	if err != nil {
		return err
	}

	if deviceData == nil {
		return nil
	}

	log.Printf("rpc处理设备数据[%s]-time[%s]-[%v]", deviceData.DeviceId, deviceData.AcqTime, deviceData.Raw)
	//log.Printf("rpc处理设备数据[%s]-time[%s]-data:%v", iotaData.DeviceId, iotaData.TriggerTime, iotaData.ThemeData.ThemeData)
	the.ch <- &common_models.ProcessData{
		DeviceData: *deviceData,
		Stations:   []common_models.Station{},
	}
	return nil
}

// 实现源接口
//func (the *EtNode) Process(ctx context.Context) (<-chan any, error) {
//	source := make(chan any, chSize)
//	go func() {
//		defer close(source)
//		for {
//			select {
//			case a := <-the.ch:
//				source <- a
//				log.Printf("存储数据=>source out,len=%d,%d", len(source), len(the.ch))
//			case <-ctx.Done():
//				log.Println("退出[source] EtNode.Process")
//				return
//			}
//
//		}
//	}()
//	return source, nil
//}

// RegisterToMaster 调用 master 发布的RPC服务方法 master.NodeRegister
func (the *EtNode) RegisterToMaster() {
	maxCount := 3
	connectCount := 0
	for {
		connectCount++
		if connectCount > maxCount {
			log.Printf("RegisterToMaster 失败 超过%d次,准备退出", maxCount)
			time.Sleep(time.Second * 10)
			os.Exit(1)
		}
		masterAddr := loadMasterAddr()
		masterConn, err := rpc.Dial("tcp", masterAddr)
		if err != nil {
			log.Printf("链接失败-> node[%s]", masterAddr)
			time.Sleep(time.Second * 5)
			continue
		}
		the.master = &rpcMaster{
			conn: masterConn,
			addr: masterAddr,
		}
		time.Sleep(time.Millisecond * 200)
		//获取node自己地址
		ipPrefix := configLoad.LoadConfig().GetString("node.hostIpPrefix")
		ip4 := common_utils.ReadIP4WithPrefixFirst(ipPrefix)
		hostName, err := os.Hostname()
		log.Printf("node [%s] ip=%s", hostName, ip4)
		port := configLoad.LoadConfig().GetUint16("node.port")
		callNodeAddr := fmt.Sprintf("%s:%d", ip4, port)

		if the.nodeInfo == nil {
			the.nodeInfo = &common_models.NodeArgs{
				ID:        hostName + time.Now().Format("_20060102_150405"),
				NodeType:  "etNode",
				Status:    "",
				Resources: "",
				Addr:      callNodeAddr,
				ThingIds:  []string{},
			}
		}

		var result bool
		err = the.master.conn.Call("master.NodeRegister", the.nodeInfo, &result)
		if err != nil {
			log.Printf("node[%s] 注册到 master[%s]异常:%v", the.nodeInfo.Addr, the.master.addr, result)
			continue
		}
		break
	}
}
func (the *EtNode) heartToMaster() {
	maxCount := 3
	connectCount := 0
	reRegister := false
	for {
		connectCount++
		if connectCount > maxCount {
			log.Printf("heartToMaster 失败 超过%d次", maxCount)
			reRegister = true
			break
		}
		var result bool
		err := the.master.conn.Call("master.NodeHeart", the.nodeInfo, &result)
		if err != nil {
			log.Printf("node[%s] 心跳到 master[%s]异常:%v", the.nodeInfo.Addr, the.master.addr, result)
			time.Sleep(time.Second * 5)
			continue
		}
		break
	}
	if reRegister { //触发重新注册
		log.Printf("node[%s] 心跳失败触发-重新注册到 master[%s]", the.nodeInfo.Addr, the.master.addr)
		the.RegisterToMaster()
	}
}

func (the *EtNode) UnRegisterToMaster() {
	var result bool
	if err := the.master.conn.Call("master.NodeUnRegister", the.nodeInfo, &result); err != nil {
		log.Printf("node[%s] 注销到 master,异常:%v", the.nodeInfo.Addr, err.Error())
	} else {
		log.Printf("node[%s] 注销到 master,结果:%v", the.nodeInfo.Addr, result)
	}
}
func (the *EtNode) exitMonitor() {
	go func() {
		c := make(chan os.Signal, 1)
		// 通过signal.Notify函数将信号通道c注册到系统相关的退出信号上
		// 这里使用了两个退出信号：syscall.SIGINT（Ctrl+C）和syscall.SIGTERM（系统发送的退出信号）
		signal.Notify(c, syscall.SIGINT, syscall.SIGTERM)
		// 阻塞等待接收信号
		s := <-c
		log.Printf("接收到退出信号：%v，进行清理工作\n", s)
		the.UnRegisterToMaster()
		time.Sleep(3 * time.Second)
		os.Exit(0)
	}()
}
func (the *EtNode) heartMonitor() {
	go func() {
		ticker := time.NewTicker(time.Minute)
		defer ticker.Stop()
		for range ticker.C {
			if the.master != nil {
				log.Printf("node[%s] 心跳触发-> master[%s]", the.nodeInfo.Addr, the.master.addr)
				the.heartToMaster()
			}
		}

	}()

}

// LoadCh test用
func (the *EtNode) LoadCh() chan *common_models.ProcessData {
	return the.ch
}

func loadMasterAddr() string {
	masterHost := configLoad.LoadConfig().GetString("node.remoteMasterHost")
	masterPort := configLoad.LoadConfig().GetUint16("master.port")
	if masterHost == "" {
		masterHost = "127.0.0.1"
	}
	if masterPort == 0 {
		masterPort = 50000
	}
	return fmt.Sprintf("%s:%d", masterHost, masterPort)
}