using System;
using MQTTnet.Diagnostics.Logger;
using MQTTnet.Internal;

namespace MQTTnet.Server.Internal
{
    public sealed class MqttServerEventContainer
    {
        readonly MqttNetSourceLogger _logger;

        public MqttServerEventContainer(IMqttNetLogger logger)
        {
            if (logger is null) throw new ArgumentNullException(nameof(logger));

            _logger = logger.WithSource(nameof(MqttServerEventContainer));
        }

        public AsyncEvent<InterceptingMqttClientSubscriptionEventArgs> InterceptingClientSubscriptionEvent { get; } = new AsyncEvent<InterceptingMqttClientSubscriptionEventArgs>();
        
        public AsyncEvent<InterceptingMqttClientUnsubscriptionEventArgs> InterceptingClientUnsubscriptionEvent { get; } = new AsyncEvent<InterceptingMqttClientUnsubscriptionEventArgs>();
        
        public AsyncEvent<InterceptingMqttClientPublishEventArgs> InterceptingClientPublishEvent { get; } = new AsyncEvent<InterceptingMqttClientPublishEventArgs>();
        
        public AsyncEvent<ValidatingMqttClientConnectionEventArgs> ValidatingClientConnectionEvent { get; } = new AsyncEvent<ValidatingMqttClientConnectionEventArgs>();
        public AsyncEvent<MqttServerClientConnectedEventArgs> ClientConnectedEvent { get; } = new AsyncEvent<MqttServerClientConnectedEventArgs>();
        public AsyncEvent<MqttServerClientDisconnectedEventArgs> ClientDisconnectedEvent { get; } = new AsyncEvent<MqttServerClientDisconnectedEventArgs>();
        public AsyncEvent<MqttServerClientSubscribedTopicEventArgs> ClientSubscribedTopicEvent { get; } = new AsyncEvent<MqttServerClientSubscribedTopicEventArgs>();
        public AsyncEvent<MqttServerClientUnsubscribedTopicEventArgs> ClientUnsubscribedTopicEvent { get; } = new AsyncEvent<MqttServerClientUnsubscribedTopicEventArgs>();
        
        public AsyncEvent<PreparingMqttClientSessionEventArgs> PreparingClientSessionEvent { get; } = new AsyncEvent<PreparingMqttClientSessionEventArgs>();
        public AsyncEvent<EventArgs> StartedEvent { get; } = new AsyncEvent<EventArgs>();
        
        public AsyncEvent<EventArgs> StoppedEvent { get; } = new AsyncEvent<EventArgs>();
        
        // public async Task SafeNotifyClientConnectedAsync(MqttConnectPacket connectPacket, IMqttChannelAdapter channelAdapter)
        // {
        //     try
        //     {
        //         var eventArgs = new MqttServerClientConnectedEventArgs
        //         {
        //             ClientId = connectPacket.ClientId,
        //             UserName = connectPacket.Username,
        //             ProtocolVersion = channelAdapter.PacketFormatterAdapter.ProtocolVersion,
        //             Endpoint = channelAdapter.Endpoint
        //         };
        //         
        //         var handler = ClientConnectedHandler;
        //         if (handler != null)
        //         {
        //             await handler.HandleClientConnectedAsync(eventArgs).ConfigureAwait(false);
        //         }
        //
        //         await ClientConnectedEvent.InvokeAsync(eventArgs).ConfigureAwait(false);
        //     }
        //     catch (Exception exception)
        //     {
        //         _logger.Error(exception, "Error while handling custom 'ClientConnected' event.");
        //     }
        // }

        // public async Task SafeNotifyClientDisconnectedAsync(string clientId, MqttClientDisconnectType disconnectType, string endpoint)
        // {
        //     try
        //     {
        //         var eventArgs = new MqttServerClientDisconnectedEventArgs
        //         {
        //             ClientId = clientId,
        //             DisconnectType = disconnectType,
        //             Endpoint = endpoint
        //         };
        //         
        //         var handler = ClientDisconnectedHandler;
        //         if (handler != null)
        //         {
        //             await handler.HandleClientDisconnectedAsync(eventArgs).ConfigureAwait(false);
        //         }
        //
        //         await ClientDisconnectedEvent.InvokeAsync(eventArgs).ConfigureAwait(false);
        //     }
        //     catch (Exception exception)
        //     {
        //         _logger.Error(exception, "Error while handling custom 'ClientDisconnected' event.");
        //     }
        // }

        // public async Task SafeNotifyClientSubscribedTopicAsync(string clientId, MqttTopicFilter topicFilter)
        // {
        //     try
        //     {
        //         var eventArgs = new MqttServerClientSubscribedTopicEventArgs
        //         {
        //             ClientId = clientId,
        //             TopicFilter = topicFilter
        //         };
        //         
        //         var handler = ClientSubscribedTopicHandler;
        //         if (handler != null)
        //         {
        //             await handler.HandleClientSubscribedTopicAsync(eventArgs).ConfigureAwait(false);
        //         }
        //
        //         await ClientSubscribedTopicEvent.InvokeAsync(eventArgs).ConfigureAwait(false);
        //     }
        //     catch (Exception exception)
        //     {
        //         _logger.Error(exception, "Error while handling custom 'ClientSubscribedTopic' event.");
        //     }
        // }

        // public async Task SafeNotifyClientUnsubscribedTopicAsync(string clientId, string topicFilter)
        // {
        //     try
        //     {
        //         var eventArgs = new MqttServerClientUnsubscribedTopicEventArgs
        //         {
        //             ClientId = clientId,
        //             TopicFilter = topicFilter
        //         };
        //         
        //         var handler = ClientUnsubscribedTopicHandler;
        //         if (handler != null)
        //         {
        //             await handler.HandleClientUnsubscribedTopicAsync(eventArgs).ConfigureAwait(false);
        //         }
        //
        //         await ClientUnsubscribedTopicEvent.InvokeAsync(eventArgs).ConfigureAwait(false);
        //     }
        //     catch (Exception exception)
        //     {
        //         _logger.Error(exception, "Error while handling custom 'ClientUnsubscribedTopic' event.");
        //     }
        // }

        // public async Task SafeNotifyApplicationMessageReceivedAsync(string senderClientId, MqttApplicationMessage applicationMessage)
        // {
        //     try
        //     {
        //         var eventArgs = new MqttApplicationMessageReceivedEventArgs(senderClientId, applicationMessage, null, null);
        //         
        //         var handler = ApplicationMessageReceivedHandler;
        //         if (handler != null)
        //         {
        //             await handler.HandleApplicationMessageReceivedAsync(eventArgs).ConfigureAwait(false);
        //         }
        //
        //         await ApplicationMessageReceivedEvent.InvokeAsync(eventArgs).ConfigureAwait(false);
        //     }
        //     catch (Exception exception)
        //     {
        //         _logger.Error(exception, "Error while handling custom 'ApplicationMessageReceived' event.");
        //     }
        // }
    }
}