From d5ea8ca3ad378fc7e0a18ad314e1dfce07003ab6 Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Thu, 3 Nov 2016 19:35:19 -0400
Subject: move classes to portable

---
 .../Session/WebSocketController.cs                 | 288 +++++++++++++++++++++
 1 file changed, 288 insertions(+)
 create mode 100644 Emby.Server.Implementations/Session/WebSocketController.cs

(limited to 'Emby.Server.Implementations/Session/WebSocketController.cs')

diff --git a/Emby.Server.Implementations/Session/WebSocketController.cs b/Emby.Server.Implementations/Session/WebSocketController.cs
new file mode 100644
index 000000000..f0ff0b5dd
--- /dev/null
+++ b/Emby.Server.Implementations/Session/WebSocketController.cs
@@ -0,0 +1,288 @@
+using MediaBrowser.Controller.Net;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Net;
+using MediaBrowser.Model.Session;
+using MediaBrowser.Model.System;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace Emby.Server.Implementations.Session
+{
+    public class WebSocketController : ISessionController, IDisposable
+    {
+        public SessionInfo Session { get; private set; }
+        public IReadOnlyList<IWebSocketConnection> Sockets { get; private set; }
+
+        private readonly ILogger _logger;
+
+        private readonly ISessionManager _sessionManager;
+
+        public WebSocketController(SessionInfo session, ILogger logger, ISessionManager sessionManager)
+        {
+            Session = session;
+            _logger = logger;
+            _sessionManager = sessionManager;
+            Sockets = new List<IWebSocketConnection>();
+        }
+
+        private bool HasOpenSockets
+        {
+            get { return GetActiveSockets().Any(); }
+        }
+
+        public bool SupportsMediaControl
+        {
+            get { return HasOpenSockets; }
+        }
+
+        private bool _isActive;
+        private DateTime _lastActivityDate;
+        public bool IsSessionActive
+        {
+            get
+            {
+                if (HasOpenSockets)
+                {
+                    return true;
+                }
+
+                //return false;
+                return _isActive && (DateTime.UtcNow - _lastActivityDate).TotalMinutes <= 10;
+            }
+        }
+
+        public void OnActivity()
+        {
+            _isActive = true;
+            _lastActivityDate = DateTime.UtcNow;
+        }
+
+        private IEnumerable<IWebSocketConnection> GetActiveSockets()
+        {
+            return Sockets
+                .OrderByDescending(i => i.LastActivityDate)
+                .Where(i => i.State == WebSocketState.Open);
+        }
+
+        public void AddWebSocket(IWebSocketConnection connection)
+        {
+            var sockets = Sockets.ToList();
+            sockets.Add(connection);
+
+            Sockets = sockets;
+
+            connection.Closed += connection_Closed;
+        }
+
+        void connection_Closed(object sender, EventArgs e)
+        {
+            if (!GetActiveSockets().Any())
+            {
+                _isActive = false;
+
+                try
+                {
+                    _sessionManager.ReportSessionEnded(Session.Id);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error reporting session ended.", ex);
+                }
+            }
+        }
+
+        private IWebSocketConnection GetActiveSocket()
+        {
+            var socket = GetActiveSockets()
+                .FirstOrDefault();
+
+            if (socket == null)
+            {
+                throw new InvalidOperationException("The requested session does not have an open web socket.");
+            }
+
+            return socket;
+        }
+
+        public Task SendPlayCommand(PlayRequest command, CancellationToken cancellationToken)
+        {
+            return SendMessageInternal(new WebSocketMessage<PlayRequest>
+            {
+                MessageType = "Play",
+                Data = command
+
+            }, cancellationToken);
+        }
+
+        public Task SendPlaystateCommand(PlaystateRequest command, CancellationToken cancellationToken)
+        {
+            return SendMessageInternal(new WebSocketMessage<PlaystateRequest>
+            {
+                MessageType = "Playstate",
+                Data = command
+
+            }, cancellationToken);
+        }
+
+        public Task SendLibraryUpdateInfo(LibraryUpdateInfo info, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<LibraryUpdateInfo>
+            {
+                MessageType = "LibraryChanged",
+                Data = info
+
+            }, cancellationToken);
+        }
+
+        /// <summary>
+        /// Sends the restart required message.
+        /// </summary>
+        /// <param name="info">The information.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendRestartRequiredNotification(SystemInfo info, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<SystemInfo>
+            {
+                MessageType = "RestartRequired",
+                Data = info
+
+            }, cancellationToken);
+        }
+
+
+        /// <summary>
+        /// Sends the user data change info.
+        /// </summary>
+        /// <param name="info">The info.</param>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendUserDataChangeInfo(UserDataChangeInfo info, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<UserDataChangeInfo>
+            {
+                MessageType = "UserDataChanged",
+                Data = info
+
+            }, cancellationToken);
+        }
+
+        /// <summary>
+        /// Sends the server shutdown notification.
+        /// </summary>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendServerShutdownNotification(CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<string>
+            {
+                MessageType = "ServerShuttingDown",
+                Data = string.Empty
+
+            }, cancellationToken);
+        }
+
+        /// <summary>
+        /// Sends the server restart notification.
+        /// </summary>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <returns>Task.</returns>
+        public Task SendServerRestartNotification(CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<string>
+            {
+                MessageType = "ServerRestarting",
+                Data = string.Empty
+
+            }, cancellationToken);
+        }
+
+        public Task SendGeneralCommand(GeneralCommand command, CancellationToken cancellationToken)
+        {
+            return SendMessageInternal(new WebSocketMessage<GeneralCommand>
+            {
+                MessageType = "GeneralCommand",
+                Data = command
+
+            }, cancellationToken);
+        }
+
+        public Task SendSessionEndedNotification(SessionInfoDto sessionInfo, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<SessionInfoDto>
+            {
+                MessageType = "SessionEnded",
+                Data = sessionInfo
+
+            }, cancellationToken);
+        }
+
+        public Task SendPlaybackStartNotification(SessionInfoDto sessionInfo, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<SessionInfoDto>
+            {
+                MessageType = "PlaybackStart",
+                Data = sessionInfo
+
+            }, cancellationToken);
+        }
+
+        public Task SendPlaybackStoppedNotification(SessionInfoDto sessionInfo, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<SessionInfoDto>
+            {
+                MessageType = "PlaybackStopped",
+                Data = sessionInfo
+
+            }, cancellationToken);
+        }
+
+        public Task SendMessage<T>(string name, T data, CancellationToken cancellationToken)
+        {
+            return SendMessagesInternal(new WebSocketMessage<T>
+            {
+                Data = data,
+                MessageType = name
+
+            }, cancellationToken);
+        }
+
+        private Task SendMessageInternal<T>(WebSocketMessage<T> message, CancellationToken cancellationToken)
+        {
+            var socket = GetActiveSocket();
+
+            return socket.SendAsync(message, cancellationToken);
+        }
+
+        private Task SendMessagesInternal<T>(WebSocketMessage<T> message, CancellationToken cancellationToken)
+        {
+            var tasks = GetActiveSockets().Select(i => Task.Run(async () =>
+            {
+                try
+                {
+                    await i.SendAsync(message, cancellationToken).ConfigureAwait(false);
+                }
+                catch (Exception ex)
+                {
+                    _logger.ErrorException("Error sending web socket message", ex);
+                }
+
+            }, cancellationToken));
+
+            return Task.WhenAll(tasks);
+        }
+
+        public void Dispose()
+        {
+            foreach (var socket in Sockets.ToList())
+            {
+                socket.Closed -= connection_Closed;
+            }
+        }
+    }
+}
-- 
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