Files
WatchedTogether/Jellyfin.Plugin.WatchedTogether/ServiceRegistrator.cs
T
dtourolle 7be07d16a2
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Implement Watched Together shared viewing accounts
Replaces the plugin template with a working plugin that lets several
users share one viewing account while keeping their individual watched
lists accurate.

Three pieces:

- Auto-creating groups. Logging in as "alice+bob" with any named
  member's own password provisions the shared account and signs you in.
  Verified against 10.11.5: AuthenticateUser offers unmatched usernames
  to every enabled provider and re-queries afterwards, which is the hook
  this relies on. Gated on a real member password so knowing two
  usernames is not enough to create an account.

- Multi-password authentication. IRequiresResolvedUser hands us the
  resolved shared account; each member's live stored hash is checked via
  ICryptoProvider.Verify. Deliberately avoids re-entering
  UserManager.AuthenticateUser, which would trip every member's
  failed-attempt counter whenever a different member's password matched.

- One-way played-state sync. Shared account to members only, filtered to
  PlaybackFinished/TogglePlayed/Import so playback progress ticks are
  ignored. No loop guard needed: member writes carry a non-shared id.

Membership is stored as user IDs rather than re-parsed from the username,
so shared accounts can be renamed freely. The +/name collision resolves
itself because Jellyfin only consults the plugin when no local user
matches the typed name.

Targets Jellyfin 10.11.x / net9.0. Adds Gitea CI (test, build, release),
a builder image, and 34 tests covering the auth and sync rules.
2026-07-29 00:00:13 +02:00

29 lines
1.1 KiB
C#

using Jellyfin.Plugin.WatchedTogether.Auth;
using Jellyfin.Plugin.WatchedTogether.Services;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Authentication;
using MediaBrowser.Controller.Plugins;
using Microsoft.Extensions.DependencyInjection;
namespace Jellyfin.Plugin.WatchedTogether;
/// <summary>
/// Registers the plugin's services with the host.
/// </summary>
public class ServiceRegistrator : IPluginServiceRegistrator
{
/// <inheritdoc />
public void RegisterServices(IServiceCollection serviceCollection, IServerApplicationHost applicationHost)
{
serviceCollection.AddSingleton<IGroupService, GroupService>();
serviceCollection.AddSingleton<IProvisioningService, ProvisioningService>();
serviceCollection.AddSingleton<IDynamicGroupService, DynamicGroupService>();
// Discovered by Jellyfin and matched to shared accounts via User.AuthenticationProviderId.
serviceCollection.AddSingleton<IAuthenticationProvider, SharedAccountAuthenticationProvider>();
serviceCollection.AddHostedService<WatchedStateSyncService>();
serviceCollection.AddHostedService<UserLifecycleService>();
}
}