using CoreAgent.Domain.Interfaces.CustomWSClient;
using CoreAgent.Domain.Interfaces.Network;
using CoreAgent.Domain.Models.Protocol;
using CoreAgent.Infrastructure.Contexts;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Concurrent;
using System.Threading;
using System.Threading.Tasks;

namespace CoreAgent.Infrastructure.Services.ProtocolLogHandlers
{
    /// <summary>
    /// IMS协议消息处理器
    /// 负责处理IMS相关的WebSocket消息，包括用户更新、短信、邀请等功能
    /// </summary>
    public class IMSLogMessageHandler : ICustomMessageHandler, IDisposable
    {
        private readonly ILogger _logger;
        private int _messageId = 0;
        private string _currentMessageId = string.Empty;
        private readonly Action<string> _messageCallback;
        private readonly ICellularNetworkContext _context;
        private readonly BlockingCollection<(string MessageData, IObserverCustomWebSocketClient Observer)> _messageQueue;
        private readonly CancellationTokenSource _cancellationTokenSource;
        private readonly Task _processTask;
        private bool _disposed;

        public IMSLogMessageHandler(ILogger logger, ICellularNetworkContext context, Action<string> action)
        {
            _logger = logger ?? throw new ArgumentNullException(nameof(logger));
            _messageCallback = action ?? throw new ArgumentNullException(nameof(action));
            _context = context ?? throw new ArgumentNullException(nameof(context));
            
            _messageQueue = new BlockingCollection<(string, IObserverCustomWebSocketClient)>();
            _cancellationTokenSource = new CancellationTokenSource();
            _processTask = Task.Run(ProcessMessageQueue);
            
            _logger.LogInformation("IMS协议消息处理器初始化完成，消息队列已启动");
        }

        public void HandleMessage(string messageData, IObserverCustomWebSocketClient observer)
        {
            try
            {
                _logger.LogDebug("将消息加入处理队列: {MessageData}", messageData);
                _messageQueue.Add((messageData, observer));
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "将消息加入队列时发生错误: {MessageData}", messageData);
            }
        }

        private async Task ProcessMessageQueue()
        {
            try
            {
                _logger.LogInformation("开始处理IMS消息队列");
                foreach (var (messageData, observer) in _messageQueue.GetConsumingEnumerable(_cancellationTokenSource.Token))
                {
                    try
                    {
                        await ProcessMessageAsync(messageData, observer);
                    }
                    catch (Exception ex)
                    {
                        _logger.LogError(ex, "处理队列中的消息时发生错误: {MessageData}", messageData);
                    }
                }
            }
            catch (OperationCanceledException)
            {
                _logger.LogInformation("IMS消息队列处理已取消");
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "IMS消息队列处理过程中发生错误");
            }
        }

        private async Task ProcessMessageAsync(string messageData, IObserverCustomWebSocketClient observer)
        {
            try
            {
                _logger.LogDebug("开始处理IMS协议消息: {MessageData}", messageData);
                var data = JObject.Parse(messageData);
                string messageType = data["message"]!.ToString();
                _logger.LogInformation("收到IMS协议消息类型: {MessageType}", messageData);
                await HandleMessageByTypeAsync(messageType, data, observer);
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "处理IMS协议消息时发生错误: {MessageData}", messageData);
            }
        }

        private async Task HandleMessageByTypeAsync(string messageType, JObject data, IObserverCustomWebSocketClient observer)
        {
            _currentMessageId = _messageId.ToString();

            switch (messageType)
            {
                case "ready":
                    await HandleReadyMessageAsync(observer);
                    break;
                case "config_get":
                    await HandleConfigGetMessageAsync(data, observer);
                    break;
                case "config_set":
                    await HandleConfigSetMessageAsync(observer);
                    break;
                case "log_get":
                    await HandleLogGetMessageAsync(data, observer);
                    break;
                case "stats":
                    await HandleStatsMessageAsync(observer);
                    break;
                default:
                    _logger.LogWarning("收到未知的IMS协议消息类型: {MessageType}", messageType);
                    await Task.Run(() => observer.SendMessage(LayerLogslevelSetting(false)));
                    break;
            }
        }

        private async Task HandleReadyMessageAsync(IObserverCustomWebSocketClient observer)
        {
            string readyResponse = CreateMessage("config_get");
            _logger.LogInformation("发送ready响应: {Response}", readyResponse);
            await Task.Run(() => observer.SendMessage(readyResponse));
        }

        private async Task HandleConfigGetMessageAsync(JObject data, IObserverCustomWebSocketClient observer)
        {
            if (_currentMessageId == data["message_id"]!.ToString())
            {
                _logger.LogInformation("处理config_get请求");
                var responseArray = new JArray
                {
                    CreateRegisterMessage("users_update"),
                    CreateRegisterMessage("sms"),
                    CreateRegisterMessage("invite"),
                    CreateStatsMessage(),
                    SettingBaseLayerLogslevel(JObject.Parse(data["logs"].ToString()))
                };
                _logger.LogInformation("发送config_get响应: {Response}", responseArray.ToString());
                await Task.Run(() => observer.SendMessage(responseArray.ToString()));
            }
            else
            {
                _logger.LogWarning("config_get消息ID不匹配: 收到={ReceivedId}, 期望={ExpectedId}", 
                    data["message_id"]!.ToString(), _currentMessageId);
            }
        }

        private async Task HandleConfigSetMessageAsync(IObserverCustomWebSocketClient observer)
        {
            _messageId++;
            string configResponse = LayerLogslevelSetting(true);
            _logger.LogInformation("发送config_set响应: {Response}", configResponse);
            await Task.Run(() => observer.SendMessage(configResponse));
            //_currentMessageId = _messageId.ToString();
        }

        private async Task HandleLogGetMessageAsync(JObject data, IObserverCustomWebSocketClient observer)
        {
            if (JArray.FromObject(data["logs"]).Count > 0)
            {
                _messageId++;
                string logResponse = LayerLogslevelSetting(false);
                _logger.LogInformation("发送log_get响应: {Response}", logResponse);
                await Task.Run(() => observer.SendMessage(logResponse));
                _currentMessageId = _messageId.ToString();
                await Task.Run(() => _messageCallback.Invoke(data.ToString()));
            }
        }

        private async Task HandleStatsMessageAsync(IObserverCustomWebSocketClient observer)
        {
            _messageId++;
            string statsResponse = CreateStatsMessage();
            _logger.LogInformation("发送stats响应: {Response}", statsResponse);
            await Task.Run(() => observer.SendMessage(statsResponse));
        }

        private string CreateMessage(string message)
        {
            _messageId++;
            return JObject.FromObject(new { message, message_id = _messageId }).ToString();
        }

        private JObject CreateRegisterMessage(string register)
        {
            _messageId++;
            return JObject.FromObject(new { message = "register", message_id = _messageId, register });
        }

        private string CreateStatsMessage()
        {
            _messageId++;
            return CreateMessage("stats");
        }

        private JObject SettingBaseLayerLogslevel(JObject keyValues, bool isCloseSystemInfo = false)
        {
            _messageId++;
            keyValues.Remove("rotate");
            keyValues.Remove("path");
            keyValues.Remove("count");
            keyValues["bcch"] = isCloseSystemInfo;

            return JObject.FromObject(new
            {
                message = "config_set",
                logs = keyValues,
                message_id = _messageId
            });
        }

        private string LayerLogslevelSetting(bool isHead = false)
        {
            _messageId++;
            BaseNetworkLog<ImsLayerLog> logtype = new BaseNetworkLog<ImsLayerLog>
            {
                Timeout = isHead ? 0 : 1,
                MinLogCount = 64,
                MaxLogCount = 2048,
                LayerConfig = _context.NetworkLogs.ImsLog,
                Message = "log_get",
                IncludeHeaders = isHead,
                MessageId = _messageId
            };
            return JObject.FromObject(logtype).ToString();
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (!_disposed)
            {
                if (disposing)
                {
                    _cancellationTokenSource.Cancel();
                    _messageQueue.CompleteAdding();
                    _processTask.Wait();
                    _cancellationTokenSource.Dispose();
                    _messageQueue.Dispose();
                }
                _disposed = true;
            }
        }

        ~IMSLogMessageHandler()
        {
            Dispose(false);
        }
    }
}