using EC.Util.Common;
using System.Collections.Concurrent;
using System.Net;
using System.Timers;
using Timer = System.Timers.Timer;

namespace JiLinApp.Docking.VibrateAlarm;

public class TcpManager
{
    #region Fields

    private AsyncTcpServer Server { get; set; }

    private TcpManagerConfig Config { get; set; }

    private ConcurrentDictionary<string, ClientMessage> DeviceDict { get; } = new();

    private Timer HeartTimer { get; } = new();

    private Timer StateSpanTimer { get; } = new();

    #region Event

    public delegate void VibrateTcpDeviceStateEvent(ClientMessage device);

    public delegate void VibrateTcpSensorStateEvent(SensorState sensor);

    public delegate void VibrateTcpAlarmEvent(TcpAlarmHostMessage msg);

    public event VibrateTcpDeviceStateEvent? OnVibrateTcpDeviceState;

    public event VibrateTcpSensorStateEvent? OnVibrateTcpSensorState;

    public event VibrateTcpAlarmEvent? OnVibrateTcpAlarm;

    #endregion Event

    #endregion Fields

    public TcpManager()
    {
    }

    #region Server

    public void Start(TcpManagerConfig config)
    {
        if (IsRunning()) return;
        Server = new(IPAddress.Any, config.ServerPort);
        Server.ClientConnected += Server_ClientConnected;
        Server.ClientDisconnected += Server_ClientDisconnected;
        Server.DatagramReceived += Server_DatagramReceived;
        Server.Start();

        HeartTimer.Close();
        HeartTimer.Interval = 1000 * config.DeviceHeartKeep;
        HeartTimer.Elapsed += HeartTimer_Elapsed;
        HeartTimer.Start();

        Config = config;
    }

    public void Stop()
    {
        if (!IsRunning()) return;
        try
        {
            Server.Stop();
        }
        finally
        {
            Server.ClientConnected -= Server_ClientConnected;
            Server.ClientDisconnected -= Server_ClientDisconnected;
            Server.DatagramReceived -= Server_DatagramReceived;
            Server = null;
            DeviceDict.Clear();
            HeartTimer.Stop();
            HeartTimer.Elapsed -= HeartTimer_Elapsed;
        }
    }

    public bool IsRunning()
    {
        return Server != null && Server.IsRunning();
    }

    #endregion Server

    #region Events

    private void HeartTimer_Elapsed(object? sender, ElapsedEventArgs e)
    {
        foreach (var clientMsg in DeviceDict.Values)
        {
            SendHostHeart_01(clientMsg);
        }
    }

    private void Server_ClientConnected(object? sender, TcpClientConnectedEventArgs e)
    {
        string clientKey = e.TcpClient.Client.RemoteEndPoint?.ToString() ?? "";
        if (clientKey == "") return;
        string clientIp = clientKey.Split(':')[0];
        string clientPort = clientKey.Split(':')[1];
        Console.WriteLine("上线:{0}", clientIp);
        if (!TryGetDevice(clientIp, out ClientMessage clientMsg))
        {
            clientMsg = new()
            {
                Client = e.TcpClient,
                Host = new() { Id = -1, Ip = clientIp, Port = clientPort }
            };
            AddDeivce(clientIp, clientMsg);
        }
        else
        {
            ProcessDeviceStateEvent(ref clientMsg, 1);
        }
    }

    private void Server_ClientDisconnected(object? sender, TcpClientDisconnectedEventArgs e)
    {
        string clientKey = e.TcpClient.Client.RemoteEndPoint?.ToString() ?? "";
        if (clientKey == "") return;
        string clientIp = clientKey.Split(':')[0];
        string clientPort = clientKey.Split(':')[1];
        Console.WriteLine("下线:{0}", clientIp);
        if (TryGetDevice(clientIp, out ClientMessage clientMsg))
        {
            ProcessDeviceStateEvent(ref clientMsg, 0);
        }
    }

    private void Server_DatagramReceived(object? sender, TcpDatagramReceivedEventArgs<byte[]> e)
    {
        string clientKey = e.TcpClient.TcpClient.Client.RemoteEndPoint?.ToString() ?? "";
        if (clientKey == "") return;
        string clientIp = clientKey.Split(':')[0];
        if (TryGetDevice(clientIp, out ClientMessage clientMsg))
        {
            clientMsg.AddData(e.Datagram);
            AnalysisClientMessage(ref clientMsg);
        }
    }

    #endregion Events

    #region Analysisbo

    private void AnalysisClientMessage(ref ClientMessage clientMsg)
    {
        //AA AA 01 C0 A8 01 05 28 23 C0 A8 01 64 88 13 7C 04 02 04 00 2B
        //AA AA 01 C0 A8 01 64 88 13 C0 A8 01 05 28 23 24 14 04 0A 00 02 00 03
        List<byte[]> msglist = clientMsg.GetMessageList();
        if (msglist == null || msglist.Count == 0) return;
        for (int i = 0; i < msglist.Count; i++)
        {
            byte[] msg = msglist[i];
            bool vaild = msg.Length >= 19 && msg[0] == 0xAA && msg[1] == 0xAA;
            if (!vaild) continue;
            DataMessage mm = new();
            mm.Decode(msglist[i]);
            Console.WriteLine("Receive from {0}:{1} => {2}, {3}", clientMsg.Ip, clientMsg.Port, DataMessage.ToHexString(msglist[i]), JsonUtil.ToJson(mm));
            switch (mm.FunctionNum)
            {
                case 0x00:
                    Console.WriteLine("主机登录:{0}", clientMsg.Ip);
                    if (clientMsg.Host == null || clientMsg.Host.Id != mm.DeviceId)
                    {
                        clientMsg.Host = new() { Id = mm.DeviceId, Ip = mm.SendIp, Port = mm.SendPort.ToString() };
                        UpdateDevice(clientMsg.Ip, clientMsg.Host);
                        ProcessDeviceStateEvent(ref clientMsg, 1);
                    }
                    ResponseHostLogin_10(clientMsg, mm);
                    ClientMessage clientMsg2 = clientMsg;
                    if (clientMsg2.SensorsEmpty && clientMsg2.SensorsLock.TryEnterWriteLock(1000))
                    {
                        Task.Run(() =>
                        {
                            while (clientMsg2.SensorsEmpty)
                            {
                                RequestSensorList_07(clientMsg2);
                                Thread.Sleep(1000);
                            }
                            clientMsg2.SensorsLock.ExitWriteLock();
                        });
                    }
                    break;

                case 0x01:
                    Console.WriteLine("心跳:{0}", clientMsg.Ip);
                    ProcessDeviceStateEvent(ref clientMsg, 1);
                    break;

                case 0x12:
                    Console.WriteLine("传感器地址设置响应:{0}", clientMsg.Ip);
                    SetDataRequest(mm, 0x02);
                    break;

                case 0x13:
                    Console.WriteLine("传感器模式设置响应:{0}", clientMsg.Ip);
                    SetDataRequest(mm, 0x03);
                    break;

                case 0x14:
                    Console.WriteLine("传感器状态响应:{0}", clientMsg.Ip);
                    int sensorAddr = mm.Data[0] + mm.Data[1] * 256;
                    int state = mm.Data[2] + mm.Data[3] * 256;
                    int online = state % 2;
                    int alarm = state / 2 % 2;
                    if (clientMsg.Host == null || clientMsg.Host.Id != mm.DeviceId)
                    {
                        clientMsg.Host = new() { Id = mm.DeviceId, Ip = mm.SendIp, Port = mm.SendPort.ToString() };
                        UpdateDevice(clientMsg.Ip, clientMsg.Host);
                    }
                    ProcessSensorStateEvent(ref clientMsg, mm, sensorAddr, online, alarm);
                    SetDataRequest(mm, 0x04);
                    break;

                case 0x15:
                    Console.WriteLine("传感器复位响应:{0}", clientMsg.Ip);
                    SetDataRequest(mm, 0x05);
                    break;

                case 0x17:
                    Console.WriteLine("返回传感器列表:{0}", clientMsg.Ip);
                    if (clientMsg.Host == null || clientMsg.Host.Id != mm.DeviceId)
                    {
                        clientMsg.Host = new() { Id = mm.DeviceId, Ip = mm.SendIp, Port = mm.SendPort.ToString() };
                        UpdateDevice(clientMsg.Ip, clientMsg.Host);
                    }
                    if (clientMsg.SensorsEmpty)
                    {
                        for (int j = 2; j < mm.Data.Length; j++)
                        {
                            sensorAddr = Convert.ToByte((mm.Data[j] + mm.Data[++j] * 256));
                            SensorState sensor = new(mm.DeviceId, sensorAddr, 0, 0);
                            clientMsg.SensorDict[sensorAddr] = sensor;
                        }
                        RequestSensorState_04(clientMsg);
                    }
                    SetDataRequest(mm, 0x07);
                    break;
            }
        }
    }

    private void ProcessDeviceStateEvent(ref ClientMessage device, int online)
    {
        if (device.OnlineState != online)
        {
            device.OnlineState = online;
            ReportDeviceState(device);
        }
    }

    private void ProcessSensorStateEvent(ref ClientMessage client, DataMessage mm, int sensorAddr, int offline, int alarm)
    {
        if (!client.SensorDict.TryGetValue(sensorAddr, out SensorState? sensor))
        {
            sensor = new(mm.DeviceId, sensorAddr, offline, alarm);
            client.SensorDict[sensorAddr] = sensor;
            ReportSensorState(sensor);
        }
        else if (sensor.OfflineState != offline || sensor.AlarmState != alarm)
        {
            sensor.OfflineState = offline;
            sensor.AlarmState = alarm;
            ReportSensorState(sensor);
        }
        if (alarm == 1)
        {
            ReportAlarm(sensor.DeviceId, sensorAddr);
            //RequestSensorReset_05(clientMsg, sensorAddr);
        }
    }

    private void ReportDeviceState(ClientMessage device)
    {
        OnVibrateTcpDeviceState?.Invoke(device);
    }

    private void ReportSensorState(SensorState sensor)
    {
        OnVibrateTcpSensorState?.Invoke(sensor);
    }

    private void ReportAlarm(int deviceId, int sensorAddr)
    {
        TcpAlarmHostMessage alarmMsg = new()
        {
            AlarmTime = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"),
            CID = "1151",
            DeviceID = deviceId,
            SensorAddr = sensorAddr.ToString()
        };
        OnVibrateTcpAlarm?.Invoke(alarmMsg);
    }

    #endregion Analysisbo

    #region Send

    public bool SendMessage(string ip, byte[] bytes)
    {
        if (Server == null || !Server.IsRunning()) return false;
        if (!TryGetDevice(ip, out ClientMessage clientMsg)) return false;
        string cmd = DataMessage.ToHexString(bytes);
        DataMessage mm = new();
        mm.Decode(bytes);
        Console.WriteLine("Send to {0}:{1} => {2}, {3}", ip, clientMsg.Port, cmd, JsonUtil.ToJson(mm));
        Server.SendAsync(clientMsg.Client, bytes);
        return true;
    }

    public bool SendRequest(ref DataRequest request)
    {
        if (request.Request == null) return false;
        request.Request.FrameNum = FrameNumber;
        FrameNumber++;
        bool send = SendMessage(request.Request.ReceiveIp, request.Request.Encode());
        return send;
    }

    public bool SendNoRequest(DataMessage msg)
    {
        msg.FrameNum = FrameNumber;
        FrameNumber++;
        bool send = SendMessage(msg.ReceiveIp, msg.Encode());
        return send;
    }

    public bool SendResponse(DataMessage msg)
    {
        bool send = SendMessage(msg.ReceiveIp, msg.Encode());
        return send;
    }

    public bool SendHostHeart_01(ClientMessage client)
    {
        if (client.Host == null) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x01, 1);
        msg.Data = new byte[] { 0xFF };
        return SendNoRequest(msg);
    }

    public bool RequestSensorChange_02(ClientMessage client)
    {
        if (client.Host == null || client.Host.Id < 0) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x02, 4);
        int channel = 10;
        msg.Data = new byte[] { (byte)(channel % 256), (byte)(channel / 256), (100 % 256), (100 / 256) };
        DataRequest request = new()
        {
            Request = msg
        };
        SendRequest(ref request);
        return true;
    }

    public bool RequestSensorState_04(ClientMessage client)
    {
        if (client.Host == null || client.Host.Id < 0) return false;
        if (client.SensorsEmpty) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x04, 2);
        foreach (var item in client.SensorDict.Values)
        {
            int sensorAddr = item.Addr;
            msg.Data = new byte[] { (byte)(sensorAddr % 256), (byte)(sensorAddr / 256) };
            DataRequest request = new()
            {
                Request = msg
            };
            SendRequest(ref request);
        }
        return true;
    }

    public bool RequestSensorReset_05(ClientMessage client, int sensorAddr)
    {
        if (client.Host == null || client.Host.Id < 0) return false;
        if (client.SensorsEmpty) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x05, 2);
        msg.Data = new byte[] { (byte)(sensorAddr % 256), (byte)(sensorAddr / 256) };
        DataRequest request = new()
        {
            Request = msg
        };
        SendRequest(ref request);
        return true;
    }

    public bool RequestSensorList_07(ClientMessage client)
    {
        if (client.Host == null || client.Host.Id < 0) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x07, 0);
        DataRequest request = new()
        {
            Request = msg
        };
        return SendRequest(ref request);
    }

    public bool ResponseHostLogin_10(ClientMessage client, DataMessage mm)
    {
        if (client.Host == null) return false;
        DataMessage msg = GetSendMessageHead(client.Host.Id, client, 0x10, 0);
        msg.FrameNum = mm.FrameNum;
        return SendResponse(msg);
    }

    #endregion Send

    #region ClientMessage

    public bool ContainsDevice(string clientIp)
    {
        return DeviceDict.ContainsKey(clientIp);
    }

    public ClientMessage GetDevice(string clientIp)
    {
        return DeviceDict[clientIp];
    }

    public bool TryGetDevice(string clientIp, out ClientMessage clientMsg)
    {
        return DeviceDict.TryGetValue(clientIp, out clientMsg);
    }

    public bool TryGetDevice(int deviceId, out ClientMessage clientMsg)
    {
        foreach (var item in DeviceDict.Values)
        {
            if (item.Host.Id == deviceId)
            {
                clientMsg = item;
                return true;
            }
        }
        clientMsg = null;
        return false;
    }

    private bool AddDeivce(string clientIp, ClientMessage clientMsg)
    {
        if (ContainsDevice(clientIp)) return false;
        DeviceDict[clientIp] = clientMsg;
        return true;
    }

    private void SetDevice(string clientIp, ClientMessage clientMsg)
    {
        DeviceDict[clientIp] = clientMsg;
    }

    private bool RemoveDevice(string clientIp)
    {
        return DeviceDict.Remove(clientIp, out _);
    }

    private bool UpdateDevice(string clientIp, TcpAlarmHost host)
    {
        if (!DeviceDict.ContainsKey(clientIp)) return false;
        DeviceDict[clientIp].Host = host;
        return true;
    }

    public List<ClientMessage> GetDeviceList()
    {
        return DeviceDict.Values.ToList();
    }

    #endregion ClientMessage

    #region Set

    private List<DataRequest> Reqlist { get; } = new();

    private byte FrameNumber { get; set; } = 0;

    private DataMessage GetSendMessageHead(int deviceId, ClientMessage client, byte fun_num, byte datalen)
    {
        DataMessage msg = new()
        {
            DeviceId = deviceId,
            SendIp = client.Client.Client.LocalEndPoint.ToString().Split(':')[0],
            SendPort = Server.Port,
            ReceiveIp = client.Ip,
            ReceivePort = int.Parse(client.Port),
            FunctionNum = fun_num,
            DataLen = datalen
        };
        return msg;
    }

    public void SetDataRequest(DataMessage msg, byte functionNum)
    {
        lock (this)
        {
            //for (int i = 0; i < Reqlist.Count; i++)
            //{
            //    if (Reqlist[i].Request.FunctionNum == functionNum && Reqlist[i].Request.FrameNum == msg.FrameNum)
            //    {
            //        Reqlist[i].Responce = msg;
            //    }
            //}
        }
    }

    #endregion Set
}