package comm

import (
	"crypto/tls"
	"encoding/hex"
	"fmt"
	MQTT "github.com/eclipse/paho.mqtt.golang"
	"github.com/kptyun/KPTCOMM/pkg/setting"
	"time"
)

var (
	mqtt_Breaki  int
	temp_i       int = 0
	StopCharMqtt chan int
	mqttClient   MQTT.Client
)

func onMessageReceived(client MQTT.Client, message MQTT.Message) {
	fmt.Println("Topic_up:", message.Payload())
	tmpstr := make([]string, 2)
	tmpstr[0] = ProcessBuf(message.Payload())
	if len(tmpstr) > 0 {
		_ = sendBuf(tmpstr, client)
	} else {
		client.Publish(setting.MqttSetting.Topic_Down, 1, false, message.Payload())
	}
}

func MQPublish(client MQTT.Client, payload string) {
	if len(payload) == 0 {
		return
	}
	buftmp, err := getOutbytes(payload, "")
	if err == nil {
		token := client.Publish(setting.MqttSetting.Topic_Down, 1, false, buftmp)
		if token.Error() == nil {
			Logger.Infoln("MQTT_output:", hex.EncodeToString(buftmp))
			if setting.DatabaseSetting.Showlog {
				fmt.Println("MQTT_output:", hex.EncodeToString(buftmp))
			}
		} else {
			Logger.Errorln("MQTT_发布错误: ", token.Error())
		}
	}

}

func Mq_Consumer() {
	defer func() {
		// 发生宕机时，获取panic传递的上下文并打印
		if err := recover(); err != nil {
			fmt.Println("Mq_Consumer出错：", err)
		}
	}()
	connOpts := MQTT.NewClientOptions() // This line is different, we use the constructor function instead of creating the instance ourselves.
	connOpts.SetClientID(setting.MqttSetting.Nodevalue)
	connOpts.SetMaxReconnectInterval(1 * time.Second)
	connOpts.SetCleanSession(setting.MqttSetting.CleanSession)
	connOpts.AutoReconnect = true
	brokerURL := fmt.Sprintf("tcp://%s:%d%s", setting.MqttSetting.Host, setting.MqttSetting.Port, setting.MqttSetting.Path)
	if setting.MqttSetting.SaslEnable {
		if setting.MqttSetting.Username != "" {
			connOpts.SetUsername(setting.MqttSetting.Username)
			if setting.MqttSetting.Saslpassword != "" {
				connOpts.SetPassword(setting.MqttSetting.Saslpassword)
			}
		}
	}
	if setting.MqttSetting.TlsEnable {
		cer, err := tls.LoadX509KeyPair(setting.MqttSetting.Clientcert, setting.MqttSetting.Clientkey)
		check(err)
		connOpts.SetTLSConfig(&tls.Config{Certificates: []tls.Certificate{cer}})
		brokerURL = fmt.Sprintf("tcps://%s:%d%s", setting.MqttSetting.Host, setting.MqttSetting.Port, setting.MqttSetting.Path)
	}
	connOpts.AddBroker(brokerURL)
	connOpts.OnConnect = func(c MQTT.Client) {
		if token := c.Subscribe(setting.MqttSetting.Topic_Up, byte(setting.MqttSetting.Qos), onMessageReceived); token.Wait() && token.Error() != nil {
			Logger.Errorln(token.Error())
		}

	}
label:
	mqttClient = MQTT.NewClient(connOpts)
	if token := mqttClient.Connect(); token.Wait() && token.Error() != nil {
		time.Sleep(time.Second)
		goto label
	}
	if setting.DatabaseSetting.Showlog {
		fmt.Println("[MQTT] Connected")
	}
	Logger.Infoln("[MQTT] Connected")
	for {
		select {
		case <-StopCharMqtt:
			fmt.Println("mqtt 退出")
			Logger.Errorln("mqtt 退出")
			break
		case <-time.After(10 * time.Microsecond):
			continue
		}
	}
}

func check(err error) {
	if err != nil {
		Logger.Errorln(err)
	}
}