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

public class MqttHslClient : MonoBehaviour
{
    private MqttFactory mqttFactory = new MqttFactory();
    private IMqttClient mqttClient;
    void Start()
    {
        mqttClient = mqttFactory.CreateMqttClient();
        Task.Run(async () => await ConnectToMqttBrokerAsync());
    }
    private async Task ConnectToMqttBrokerAsync()
    {
        try
        {
            var options = new MqttClientOptionsBuilder()
            .WithTcpServer("172.16.1.104", 8083)  // 使用 HiveMQ 公共代理
            .WithClientId(Guid.NewGuid().ToString())
            .WithCleanSession()
            .Build();
            //连接
            var response = await mqttClient.ConnectAsync(options, CancellationToken.None);
            Debug.Log(("The MQTT client is connected.") + mqttClient.IsConnected);
            //生成订阅
            var topicFilter = new MqttTopicFilterBuilder()
            .WithTopic("car8")
            .WithQualityOfServiceLevel(MqttQualityOfServiceLevel.ExactlyOnce)
            .Build();
            await mqttClient.SubscribeAsync(topicFilter);
            mqttClient.ApplicationMessageReceivedAsync += (e =>
            {
                var topic = e.ApplicationMessage.Topic;
                var payload = System.Text.Encoding.UTF8.GetString(e.ApplicationMessage.PayloadSegment.Array);
                Debug.Log($"Topic is {topic}, Payload is {payload}");
                return Task.CompletedTask;
            });
        }
        catch (Exception e)
        {
            Debug.Log(e.Message);
        }
    }
    private void HandleReceivedMessage(MqttApplicationMessageReceivedEventArgs e)
    {
        // 接收到 MQTT 消息时的处理逻辑
        string topic = e.ApplicationMessage.Topic;
        string payload = System.Text.Encoding.UTF8.GetString(e.ApplicationMessage.Payload);
        Debug.Log($"Received message from topic '{topic}': {payload}");

        // 如果消息是 JSON 格式，可以进行 JSON 解析
        try
        {
            //MyDataObject data = JsonUtility.FromJson<MyDataObject>(payload);
            // 现在您可以使用 data 对象中的数据
            //Debug.Log($"Parsed JSON: {data}");
        }
        catch (Exception ex)
        {
            Debug.LogError($"Failed to parse JSON: {ex.Message}");
        }
    }
    void Update()
    {

    }

    private void OnDestroy()
    {

    }
}