using MQTTnet.Client;
using MQTTnet;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using UnityEngine;
using System;

public class Mqtttest : MonoBehaviour
{
    private IMqttClient mqttClient;

    private async void Start()
    {
        // MQTT 服务器地址和端口
        string brokerAddress = "tcp://mqtt.server.com:1883";
        string clientId = Guid.NewGuid().ToString();

        // MQTT 连接选项
        var options = new MqttClientOptionsBuilder()
            .WithTcpServer(brokerAddress)
            .WithClientId(clientId)
            .Build();

        mqttClient = new MqttFactory().CreateMqttClient();
    }
        // 事件处理程序：连接成功时
    //    mqttClient.ConnectedHandler = new MqttClientConnectedHandlerDelegate(async e =>
    //    {
    //        Debug.Log("Connected to MQTT broker.");
    //        await mqttClient.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic("your/topic").Build());
    //        Debug.Log("Subscribed to topic 'your/topic'.");
    //    });

    //    // 事件处理程序：接收到消息时
    //    mqttClient.ApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(e =>
    //    {
    //        string topic = e.ApplicationMessage.Topic;
    //        string payload = Encoding.UTF8.GetString(e.ApplicationMessage.Payload);
    //        Debug.Log($"Received message on topic '{topic}': {payload}");
    //    });

    //    try
    //    {
    //        await mqttClient.ConnectAsync(options, CancellationToken.None);
    //    }
    //    catch (Exception ex)
    //    {
    //        Debug.LogError($"Error connecting to MQTT broker: {ex.Message}");
    //    }
    //}

    //private async Task SubscribeToTopic(string topic)
    //{
    //    await mqttClient.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic(topic).Build());
    //    Debug.Log($"Subscribed to topic '{topic}'.");
    //}

    //private void HandleReceivedMessage(MqttApplicationMessageReceivedEventArgs e)
    //{
    //    string topic = e.ApplicationMessage.Topic;
    //    string payload = Encoding.UTF8.GetString(e.ApplicationMessage.Payload);
    //    Debug.Log($"Received message on topic '{topic}': {payload}");
    //}

    //private async Task UnsubscribeFromTopic(string topic)
    //{
    //    await mqttClient.UnsubscribeAsync(topic);
    //    Debug.Log($"Unsubscribed from topic '{topic}'.");
    //}

    //private async void OnDestroy()
    //{
    //    if (mqttClient != null && mqttClient.IsConnected)
    //    {
    //        await mqttClient.DisconnectAsync();
    //        Debug.Log("Disconnected from MQTT broker.");
    //    }
    //}
}