1 files changed, 101 insertions, 0 deletions
diff --git a/Jellyfin.Api/WebSocketListeners/SessionInfoWebSocketListener.cs b/Jellyfin.Api/WebSocketListeners/SessionInfoWebSocketListener.cs
new file mode 100644
index 000000000..ab9f789a1
--- /dev/null
+++ b/Jellyfin.Api/WebSocketListeners/SessionInfoWebSocketListener.cs
@@ -0,0 +1,101 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Net;
+using MediaBrowser.Controller.Session;
+using Microsoft.Extensions.Logging;
+
+namespace Jellyfin.Api.WebSocketListeners
+{
+    /// <summary>
+    /// Class SessionInfoWebSocketListener.
+    /// </summary>
+    public class SessionInfoWebSocketListener : BasePeriodicWebSocketListener<IEnumerable<SessionInfo>, WebSocketListenerState>
+    {
+        /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        protected override string Name => "Sessions";
+
+        /// <summary>
+        /// The _kernel.
+        /// </summary>
+        private readonly ISessionManager _sessionManager;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SessionInfoWebSocketListener"/> class.
+        /// </summary>
+        public SessionInfoWebSocketListener(ILogger<SessionInfoWebSocketListener> logger, ISessionManager sessionManager)
+            : base(logger)
+        {
+            _sessionManager = sessionManager;
+
+            _sessionManager.SessionStarted += OnSessionManagerSessionStarted;
+            _sessionManager.SessionEnded += OnSessionManagerSessionEnded;
+            _sessionManager.PlaybackStart += OnSessionManagerPlaybackStart;
+            _sessionManager.PlaybackStopped += OnSessionManagerPlaybackStopped;
+            _sessionManager.PlaybackProgress += OnSessionManagerPlaybackProgress;
+            _sessionManager.CapabilitiesChanged += OnSessionManagerCapabilitiesChanged;
+            _sessionManager.SessionActivity += OnSessionManagerSessionActivity;
+        }
+
+        private async void OnSessionManagerSessionActivity(object sender, SessionEventArgs e)
+        {
+            await SendData(false).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerCapabilitiesChanged(object sender, SessionEventArgs e)
+        {
+            await SendData(true).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerPlaybackProgress(object sender, PlaybackProgressEventArgs e)
+        {
+            await SendData(!e.IsAutomated).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerPlaybackStopped(object sender, PlaybackStopEventArgs e)
+        {
+            await SendData(true).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerPlaybackStart(object sender, PlaybackProgressEventArgs e)
+        {
+            await SendData(true).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerSessionEnded(object sender, SessionEventArgs e)
+        {
+            await SendData(true).ConfigureAwait(false);
+        }
+
+        private async void OnSessionManagerSessionStarted(object sender, SessionEventArgs e)
+        {
+            await SendData(true).ConfigureAwait(false);
+        }
+
+        /// <summary>
+        /// Gets the data to send.
+        /// </summary>
+        /// <returns>Task{SystemInfo}.</returns>
+        protected override Task<IEnumerable<SessionInfo>> GetDataToSend()
+        {
+            return Task.FromResult(_sessionManager.Sessions);
+        }
+
+        /// <inheritdoc />
+        protected override void Dispose(bool dispose)
+        {
+            _sessionManager.SessionStarted -= OnSessionManagerSessionStarted;
+            _sessionManager.SessionEnded -= OnSessionManagerSessionEnded;
+            _sessionManager.PlaybackStart -= OnSessionManagerPlaybackStart;
+            _sessionManager.PlaybackStopped -= OnSessionManagerPlaybackStopped;
+            _sessionManager.PlaybackProgress -= OnSessionManagerPlaybackProgress;
+            _sessionManager.CapabilitiesChanged -= OnSessionManagerCapabilitiesChanged;
+            _sessionManager.SessionActivity -= OnSessionManagerSessionActivity;
+
+            base.Dispose(dispose);
+        }
+    }
+}