1 files changed, 128 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/SyncPlay/GroupStates/IdleGroupState.cs b/MediaBrowser.Controller/SyncPlay/GroupStates/IdleGroupState.cs
new file mode 100644
index 000000000..6b5a7cdf9
--- /dev/null
+++ b/MediaBrowser.Controller/SyncPlay/GroupStates/IdleGroupState.cs
@@ -0,0 +1,128 @@
+#nullable disable
+
+using System.Threading;
+using MediaBrowser.Controller.Session;
+using MediaBrowser.Controller.SyncPlay.PlaybackRequests;
+using MediaBrowser.Model.SyncPlay;
+using Microsoft.Extensions.Logging;
+
+namespace MediaBrowser.Controller.SyncPlay.GroupStates
+{
+    /// <summary>
+    /// Class IdleGroupState.
+    /// </summary>
+    /// <remarks>
+    /// Class is not thread-safe, external locking is required when accessing methods.
+    /// </remarks>
+    public class IdleGroupState : AbstractGroupState
+    {
+        /// <summary>
+        /// The logger.
+        /// </summary>
+        private readonly ILogger<IdleGroupState> _logger;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="IdleGroupState"/> class.
+        /// </summary>
+        /// <param name="loggerFactory">Instance of the <see cref="ILoggerFactory"/> interface.</param>
+        public IdleGroupState(ILoggerFactory loggerFactory)
+            : base(loggerFactory)
+        {
+            _logger = LoggerFactory.CreateLogger<IdleGroupState>();
+        }
+
+        /// <inheritdoc />
+        public override GroupStateType Type { get; } = GroupStateType.Idle;
+
+        /// <inheritdoc />
+        public override void SessionJoined(IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, Type, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void SessionLeaving(IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            // Do nothing.
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(PlayGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            // Change state.
+            var waitingState = new WaitingGroupState(LoggerFactory);
+            context.SetState(waitingState);
+            waitingState.HandleRequest(request, context, Type, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(UnpauseGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            // Change state.
+            var waitingState = new WaitingGroupState(LoggerFactory);
+            context.SetState(waitingState);
+            waitingState.HandleRequest(request, context, Type, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(PauseGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, prevState, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(StopGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, prevState, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(SeekGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, prevState, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(BufferGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, prevState, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(ReadyGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            SendStopCommand(context, prevState, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(NextItemGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            // Change state.
+            var waitingState = new WaitingGroupState(LoggerFactory);
+            context.SetState(waitingState);
+            waitingState.HandleRequest(request, context, Type, session, cancellationToken);
+        }
+
+        /// <inheritdoc />
+        public override void HandleRequest(PreviousItemGroupRequest request, IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            // Change state.
+            var waitingState = new WaitingGroupState(LoggerFactory);
+            context.SetState(waitingState);
+            waitingState.HandleRequest(request, context, Type, session, cancellationToken);
+        }
+
+        private void SendStopCommand(IGroupStateContext context, GroupStateType prevState, SessionInfo session, CancellationToken cancellationToken)
+        {
+            var command = context.NewSyncPlayCommand(SendCommandType.Stop);
+            if (!prevState.Equals(Type))
+            {
+                context.SendCommand(session, SyncPlayBroadcastType.AllGroup, command, cancellationToken);
+            }
+            else
+            {
+                context.SendCommand(session, SyncPlayBroadcastType.CurrentSession, command, cancellationToken);
+            }
+        }
+    }
+}