package mqtt2

import (
	"fmt"
	"kpt-pasture/config"
	"sync"

	"go.uber.org/dig"

	"gitee.com/xuyiping_admin/pkg/di"
	"gitee.com/xuyiping_admin/pkg/logger/zaplog"
	golangMqtt "github.com/eclipse/paho.mqtt.golang"
	"go.uber.org/zap"
)

var Module = di.Options(di.Provide(NewServer))

type MqttClient struct {
	dig.In
	Client golangMqtt.Client
	mx     sync.Mutex
}

type MqttServer interface {
	Consumer(top string, qos, workNumber int32) <-chan []byte
	Producer(top string, qos int32, data []byte) error
	Close()
}

func NewServer(conf config.MqttSetting) *MqttClient {
	opts := golangMqtt.NewClientOptions()
	opts.AddBroker(fmt.Sprintf("tcp://%s:%d", conf.Broker, conf.Port))
	opts.SetClientID(conf.ClientId)
	opts.SetCleanSession(false)
	opts.SetUsername(conf.UserName)
	opts.SetPassword(conf.Password)
	opts.SetAutoReconnect(conf.AutoReconnect)
	opts.SetDefaultPublishHandler(messagePubHandler)
	opts.OnConnect = connectHandler
	opts.OnConnectionLost = connectLostHandler
	client := golangMqtt.NewClient(opts)
	if token := client.Connect(); token.Wait() && token.Error() != nil {
		panic(token.Error())
	}
	return &MqttClient{Client: client}
}

var messagePubHandler golangMqtt.MessageHandler = func(client golangMqtt.Client, msg golangMqtt.Message) {
	zaplog.Info("messagePubHandlerReceived", zap.Any("message", string(msg.Payload())), zap.Any("topic", msg.Topic()))
}

var connectHandler golangMqtt.OnConnectHandler = func(client golangMqtt.Client) {
	zaplog.Info("connectedClient", zap.Any("client", client))
}

var connectLostHandler golangMqtt.ConnectionLostHandler = func(client golangMqtt.Client, err error) {
	zaplog.Info("connectLost", zap.Any("err", err.Error()))
}

func (s *MqttClient) Close() {
	s.mx.Lock()
	defer s.mx.Unlock()
	if s.Client.IsConnected() {
		s.Client.Disconnect(250)
	}
}