//using BPA.MQTTClient;
//using Microsoft.Extensions.Configuration;
//using MQTTnet.Client;
//using MQTTnet.Client;
//using MQTTnet;
//using MQTTnet.Client;
//using MQTTnet.Client.Options;
//using MQTTnet.Client.Receiving;
using BPASmartClient.Helper;
using BPASmartClient.Message;
using MQTTnet;
using MQTTnet.Client;
using MQTTnet.Client.Options;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace BPASmartClient.MQTT
{
    public class MQTTProxy
    {
        private IMqttClient client;
        IMqttClientOptions options;
        public Action<string> MessageRecive { get; set; }
        public Action Connected { get; set; }
        public Action LostConnect { get; set; }

        public bool IsConnected { get; set; }

        bool push = true;

        Action UseDisconnectedAction;


        public async void Connect(string UserName, string pass, string IP, int port, string clientID)
        {
            options = new MqttClientOptionsBuilder().WithTcpServer(IP, port).WithClientId(clientID).WithCredentials(UserName, pass).Build();
            client = new MqttFactory().CreateMqttClient();
            client.UseDisconnectedHandler(c =>
            {
                if (UseDisconnectedAction == null)
                {
                    Reconnect();//注册UseDisconnectedAction委托
                    UseDisconnectedAction();//执行委托
                }

            }).UseApplicationMessageReceivedHandler(c =>
            {
                MessageRecive?.Invoke(Encoding.UTF8.GetString(c.ApplicationMessage.Payload));
            }).UseConnectedHandler((e) =>
            {
                //MessageLog.GetInstance.Show($"连接成功");
            });

            try
            {
                await client.ConnectAsync(options);
            }
            catch (Exception ex)
            {
                MessageLog.GetInstance.ShowEx(ex.Message);
                MessageLog.GetInstance.Show("mqtt连接失败！重连执行中");
            }

            if (client.IsConnected)
            {
                MessageLog.GetInstance.Show("MQTT连接成功！");
                Connected?.Invoke();
            }

        }

        private void Reconnect()
        {
            UseDisconnectedAction = new Action(() =>
            {
                MessageLog.GetInstance.ShowEx("MQTT 断开连接");
                Thread.Sleep(2000);
                while (!UniversalHelper.GetInstance().GetNetworkState())
                {
                    Thread.Sleep(2000);
                }
                bool ErrorFlag = false;
                while (!client.IsConnected)
                {
                    try
                    {
                        MessageLog.GetInstance.Show($"重连中");
                        client.ConnectAsync(options).Wait();
                    }
                    catch (Exception ex)
                    {
                        if (!ErrorFlag)
                        {
                            MessageLog.GetInstance.ShowEx(ex.ToString());
                            ErrorFlag = true;
                        }
                    }
                    Thread.Sleep(3000);
                }

                if (client.IsConnected)
                {
                    MessageLog.GetInstance.Show("MQTT重连成功！");
                    LostConnect?.Invoke();
                }
                UseDisconnectedAction = null;
            });
        }

        /// <summary>
        /// Mqtt 订阅
        /// </summary>
        /// <param name="topic">需要订阅的主题</param>
        public async void MqttSubscriptionAsync(string topic)
        {
            if (client != null && client.IsConnected)
            {
                try
                {
                    var result = await client.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic(topic).WithExactlyOnceQoS().Build());
                }
                catch { }
            }
        }

        /// <summary>
        /// Mqtt 订阅
        /// </summary>
        /// <param name="topic">需要订阅的主题</param>
        public async void Subscrib(params string[] topic)
        {
            if (client != null && client.IsConnected)
            {
                try
                {
                    foreach (var item in topic)
                    {
                        var result = await client.SubscribeAsync(new MqttTopicFilterBuilder().WithTopic(item).WithExactlyOnceQoS().Build());
                    }
                }
                catch { }
            }
        }

        /// <summary>
        /// Mqtt 发布
        /// </summary>
        /// <param name="topic">需要发布的主题</param>
        /// <param name="content">需要发布的内容</param>
        public async void Publish(string topic, string content)
        {
            ;
            if (client != null && client.IsConnected)
            {
                push = true;
                var msg = new MqttApplicationMessageBuilder().WithTopic(topic).WithPayload(content).WithExactlyOnceQoS().Build();
                try
                {
                    var result = await client.PublishAsync(msg);
                }
                catch { }
            }
            if(!client.IsConnected)
            {
                if(push)
                {
                    MessageLog.GetInstance.ShowEx("MQTT未连接");
                    push = false;
                }
               
            }
        }


































        //public Action<string> MessageRecive { get; set; }
        //public Action Connected { get; set; }
        //public Action LostConnect { get; set; }

        //public bool IsConnected { get; set; }

        //private IMqttClient client;

        //public void Connect(string userName, string Password, string ip, int port, string clientId)
        //{
        //    IConfigurationBuilder configurationBuilder = new ConfigurationBuilder();
        //    configurationBuilder.AddMqttClientHostedService(p =>
        //    {
        //        p.Server = ip;
        //        p.Port = port;
        //        //p.UserName = "rafiul";
        //        //p.Password = "12345678";
        //        p.UserName = userName;
        //        p.Password = Password;
        //        p.mqttClientConnectedHandlerDelegate = new MQTTnet.Client.Connecting.MqttClientConnectedHandlerDelegate(e =>
        //        {
        //            IsConnected = true;
        //            Connected?.Invoke();
        //        });
        //        //p.mqttClientDisconnectedHandlerDelegate = new MQTTnet.Client.Disconnecting.MqttClientDisconnectedHandlerDelegate(e =>
        //        //{
        //        //    IsConnected = false;
        //        //    LostConnect?.Invoke();
        //        //});
        //        p.ConnectedResult += (s, e) =>
        //        {
        //            client = e;
        //        };
        //        p.MqttApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(e =>
        //        {
        //            MessageRecive?.Invoke(Encoding.Default.GetString(e.ApplicationMessage.Payload));
        //        });
        //    });
        //}

        public void CloseConnect()
        {
            client.Dispose();
        }

        //public async void Publish(string topic, string content)
        //{
        //    if (client.IsConnected)
        //        await client.PublishAsync(topic, content);
        //}

        //public async void Subscrib(params string[] topics)
        //{
        //    foreach (var topic in topics)
        //    {
        //        await client.SubscribeAsync(new MqttTopicFilter() { Topic = topic, QualityOfServiceLevel = MQTTnet.Protocol.MqttQualityOfServiceLevel.AtMostOnce });
        //    }
        //}
    }
}