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using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Jellyfin.Data;
using Jellyfin.Database.Implementations.Enums;
using MediaBrowser.Controller.Authentication;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Net;
using MediaBrowser.Controller.Session;
using MediaBrowser.Model.Session;
using Microsoft.Extensions.Logging;
namespace Jellyfin.Api.WebSocketListeners;
/// <summary>
/// Class SessionInfoWebSocketListener.
/// </summary>
public class SessionInfoWebSocketListener : BasePeriodicWebSocketListener<IEnumerable<SessionInfo>, WebSocketListenerState>
{
private readonly ISessionManager _sessionManager;
private bool _disposed;
/// <summary>
/// Initializes a new instance of the <see cref="SessionInfoWebSocketListener"/> class.
/// </summary>
/// <param name="logger">Instance of the <see cref="ILogger{SessionInfoWebSocketListener}"/> interface.</param>
/// <param name="sessionManager">Instance of the <see cref="ISessionManager"/> interface.</param>
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;
}
/// <inheritdoc />
protected override SessionMessageType Type => SessionMessageType.Sessions;
/// <inheritdoc />
protected override SessionMessageType StartType => SessionMessageType.SessionsStart;
/// <inheritdoc />
protected override SessionMessageType StopType => SessionMessageType.SessionsStop;
/// <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 Task<IEnumerable<SessionInfo>> GetDataToSendForConnection(IWebSocketConnection connection)
{
// For non-admin users, filter the sessions to only include their own sessions
if (connection.AuthorizationInfo?.User is not null &&
!connection.AuthorizationInfo.IsApiKey &&
!connection.AuthorizationInfo.User.HasPermission(PermissionKind.IsAdministrator))
{
var userId = connection.AuthorizationInfo.User.Id;
return Task.FromResult(_sessionManager.Sessions.Where(s => s.UserId.Equals(userId) || s.ContainsUser(userId)));
}
return Task.FromResult(_sessionManager.Sessions);
}
/// <inheritdoc />
protected override async ValueTask DisposeAsyncCore()
{
if (!_disposed)
{
_sessionManager.SessionStarted -= OnSessionManagerSessionStarted;
_sessionManager.SessionEnded -= OnSessionManagerSessionEnded;
_sessionManager.PlaybackStart -= OnSessionManagerPlaybackStart;
_sessionManager.PlaybackStopped -= OnSessionManagerPlaybackStopped;
_sessionManager.PlaybackProgress -= OnSessionManagerPlaybackProgress;
_sessionManager.CapabilitiesChanged -= OnSessionManagerCapabilitiesChanged;
_sessionManager.SessionActivity -= OnSessionManagerSessionActivity;
_disposed = true;
}
await base.DisposeAsyncCore().ConfigureAwait(false);
}
/// <summary>
/// Starts sending messages over a session info web socket.
/// </summary>
/// <param name="message">The message.</param>
protected override void Start(WebSocketMessageInfo message)
{
// Allow all authenticated users to subscribe to session information
if (message.Connection.AuthorizationInfo.User is null && !message.Connection.AuthorizationInfo.IsApiKey)
{
throw new AuthenticationException("User must be authenticated to subscribe to session Information.");
}
base.Start(message);
}
private void OnSessionManagerSessionActivity(object? sender, SessionEventArgs e)
{
SendData(false);
}
private void OnSessionManagerCapabilitiesChanged(object? sender, SessionEventArgs e)
{
SendData(true);
}
private void OnSessionManagerPlaybackProgress(object? sender, PlaybackProgressEventArgs e)
{
SendData(!e.IsAutomated);
}
private void OnSessionManagerPlaybackStopped(object? sender, PlaybackStopEventArgs e)
{
SendData(true);
}
private void OnSessionManagerPlaybackStart(object? sender, PlaybackProgressEventArgs e)
{
SendData(true);
}
private void OnSessionManagerSessionEnded(object? sender, SessionEventArgs e)
{
SendData(true);
}
private void OnSessionManagerSessionStarted(object? sender, SessionEventArgs e)
{
SendData(true);
}
}
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