using System;
using System.IO;
using System.IO.Pipes;
using System.Threading;
using System.Threading.Tasks;

namespace ConnectionUtil
{
    public class PipeClient : IDisposable
    {
        private readonly string _pipeName;
        private readonly string _serverName;
        private readonly CancellationTokenSource _cancellationTokenSource;
        private NamedPipeClientStream _pipeClient;
        private bool _isDisposed;
        private bool _isConnected;
        private readonly object _sendLock = new object();

        // 事件定义
        public event EventHandler<PipeDataEventArgs> OnData;
        public event EventHandler OnConnected;
        public event EventHandler OnDisconnected;

        public PipeClient(string pipeName, string serverName = ".")
        {
            _pipeName = pipeName;
            _serverName = serverName;
            _cancellationTokenSource = new CancellationTokenSource();
        }

        public void Connect(int timeoutMs = 5000)
        {
            if (_isConnected)
                return;
            _pipeClient = new NamedPipeClientStream(_pipeName);

            _pipeClient.Connect(timeoutMs);
            _pipeClient.ReadMode = PipeTransmissionMode.Message;
            _isConnected = true;
            Console.WriteLine("连接成功！");

            // 触发连接成功事件
            OnConnected?.Invoke(this, EventArgs.Empty);
        }

        public bool SendMessage(string message, out string response, int timeoutMs = 5000)
        {
            if (!_isConnected)
            {
                response = "客户端未连接到服务器";
                return false;
            }
            response = null;
            lock (_sendLock)
            {
                try
                {
                    // 发送消息
                    _pipeClient.WriteMessage(message);
                    return true;
                    while (_isConnected && !_cancellationTokenSource.Token.IsCancellationRequested)
                    {
                        try
                        {
                            response = _pipeClient.ReadMessage();
                            break;
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine($"接收数据时发生错误: {ex.Message}");
                            break;
                        }
                    }
                    return true;
                }
                catch (Exception ex)
                {
                    return false;
                }
            }
        }

        public void Disconnect()
        {
            _isConnected = false;
            _cancellationTokenSource.Cancel();
        }

        public void Dispose()
        {
            if (!_isDisposed)
            {
                Disconnect();
                _pipeClient?.Dispose();
                _cancellationTokenSource.Dispose();
                _isDisposed = true;
            }
        }
    }
}