optimize jellyfin collection scanning (#1453)

CHANGELOG.md

@@ -17,6 +17,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Fix playout bug that caused some schedule items with fixed start times to be pushed to the next day
 - Fix VAAPI transcoding 8-bit source content to 10-bit
 - Fix NVIDIA subtitle scaling when `scale_npp` filter is unavailable
+- Remove ffmpeg and ffprobe as required dependencies for scanning media server libraries
+  - Note that ffmpeg is still *always* required for playback to work
 
 ### Changed
 - Upgrade ffmpeg to 6.1, which is now *required* for all installs
@@ -25,6 +27,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
   - `Off`: do not normalize loudness
   - `loudnorm`: use `loudnorm` filter to normalize loudness (generally higher CPU use)
   - `dynaudnorm`: use `dynaudnorm` filter to normalize loudness (generally lower CPU use)
+- Jellyfin collection scanning will no longer happen after every (automatic or forced) library scan
+    - Automatic/periodic scans will check collections one time after all libraries have been scanned
+    - There is a new table in the `Media` > `Libraries` page with a button to manually re-scan Jellyfin collections as needed
 
 ## [0.8.2-beta] - 2023-09-14
 ### Added

ErsatzTV.Application/Jellyfin/Commands/CallJellyfinCollectionScannerHandler.cs

@@ -0,0 +1,83 @@
+using System.Globalization;
+using System.Threading.Channels;
+using ErsatzTV.Application.Libraries;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Errors;
+using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.FFmpeg.Runtime;
+using ErsatzTV.Infrastructure.Data;
+using ErsatzTV.Infrastructure.Extensions;
+using Microsoft.EntityFrameworkCore;
+
+namespace ErsatzTV.Application.Jellyfin;
+
+public class CallJellyfinCollectionScannerHandler : CallLibraryScannerHandler<SynchronizeJellyfinCollections>,
+    IRequestHandler<SynchronizeJellyfinCollections, Either<BaseError, Unit>>
+{
+    public CallJellyfinCollectionScannerHandler(
+        IDbContextFactory<TvContext> dbContextFactory,
+        IConfigElementRepository configElementRepository,
+        ChannelWriter<ISearchIndexBackgroundServiceRequest> channel,
+        IMediator mediator,
+        IRuntimeInfo runtimeInfo) : base(dbContextFactory, configElementRepository, channel, mediator, runtimeInfo)
+    {
+    }
+
+    public async Task<Either<BaseError, Unit>>
+        Handle(SynchronizeJellyfinCollections request, CancellationToken cancellationToken)
+    {
+        Validation<BaseError, string> validation = await Validate(request);
+        return await validation.Match(
+            scanner => PerformScan(scanner, request, cancellationToken),
+            error =>
+            {
+                foreach (ScanIsNotRequired scanIsNotRequired in error.OfType<ScanIsNotRequired>())
+                {
+                    return Task.FromResult<Either<BaseError, Unit>>(scanIsNotRequired);
+                }
+
+                return Task.FromResult<Either<BaseError, Unit>>(error.Join());
+            });
+    }
+
+    protected override async Task<DateTimeOffset> GetLastScan(TvContext dbContext, SynchronizeJellyfinCollections request)
+    {
+        DateTime minDateTime = await dbContext.JellyfinMediaSources
+            .SelectOneAsync(l => l.Id, l => l.Id == request.JellyfinMediaSourceId)
+            .Match(l => l.LastCollectionsScan ?? SystemTime.MinValueUtc, () => SystemTime.MaxValueUtc);
+
+        return new DateTimeOffset(minDateTime, TimeSpan.Zero);
+    }
+
+    protected override bool ScanIsRequired(
+        DateTimeOffset lastScan,
+        int libraryRefreshInterval,
+        SynchronizeJellyfinCollections request)
+    {
+        if (lastScan == SystemTime.MaxValueUtc)
+        {
+            return false;
+        }
+
+        DateTimeOffset nextScan = lastScan + TimeSpan.FromHours(libraryRefreshInterval);
+        return request.ForceScan || libraryRefreshInterval > 0 && nextScan < DateTimeOffset.Now;
+    }
+
+    private async Task<Either<BaseError, Unit>> PerformScan(
+        string scanner,
+        SynchronizeJellyfinCollections request,
+        CancellationToken cancellationToken)
+    {
+        var arguments = new List<string>
+        {
+            "scan-jellyfin-collections", request.JellyfinMediaSourceId.ToString(CultureInfo.InvariantCulture)
+        };
+
+        if (request.ForceScan)
+        {
+            arguments.Add("--force");
+        }
+
+        return await base.PerformScan(scanner, arguments, cancellationToken).MapT(_ => Unit.Default);
+    }
+}

ErsatzTV.Application/Jellyfin/Commands/SynchronizeJellyfinCollections.cs

@@ -0,0 +1,6 @@
+using ErsatzTV.Core;
+
+namespace ErsatzTV.Application.Jellyfin;
+
+public record SynchronizeJellyfinCollections(int JellyfinMediaSourceId, bool ForceScan) : IRequest<Either<BaseError, Unit>>,
+    IScannerBackgroundServiceRequest;

ErsatzTV.Application/Libraries/Queries/GetExternalCollectionsHandler.cs

@@ -15,20 +15,37 @@ public class GetExternalCollectionsHandler : IRequestHandler<GetExternalCollecti
         GetExternalCollections request,
         CancellationToken cancellationToken)
     {
+        List<LibraryViewModel> result = new();
+
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
-        List<int> mediaSourceIds = await dbContext.EmbyMediaSources
+        result.AddRange(await GetEmbyExternalCollections(dbContext, cancellationToken));
+        result.AddRange(await GetJellyfinExternalCollections(dbContext, cancellationToken));
+
+        return result;
+    }
+
+    private static async Task<IEnumerable<LibraryViewModel>> GetEmbyExternalCollections(
+        TvContext dbContext,
+        CancellationToken cancellationToken)
+    {
+        List<int> embyMediaSourceIds = await dbContext.EmbyMediaSources
             .Filter(ems => ems.Libraries.Any(l => ((EmbyLibrary)l).ShouldSyncItems))
             .Map(ems => ems.Id)
             .ToListAsync(cancellationToken);
 
-        return mediaSourceIds.Map(
-                id => new LibraryViewModel(
-                    "Emby",
-                    0,
-                    "Collections",
-                    0,
-                    id,
-                    string.Empty))
-            .ToList();
+        return embyMediaSourceIds.Map(id => new LibraryViewModel("Emby", 0, "Collections", 0, id, string.Empty));
+    }
+    
+    private static async Task<IEnumerable<LibraryViewModel>> GetJellyfinExternalCollections(
+        TvContext dbContext,
+        CancellationToken cancellationToken)
+    {
+        List<int> jellyfinMediaSourceIds = await dbContext.JellyfinMediaSources
+            .Filter(jms => jms.Libraries.Any(l => ((JellyfinLibrary)l).ShouldSyncItems))
+            .Map(jms => jms.Id)
+            .ToListAsync(cancellationToken);
+
+        return jellyfinMediaSourceIds.Map(
+            id => new LibraryViewModel("Jellyfin", 0, "Collections", 0, id, string.Empty));
     }
 }

ErsatzTV.Core/Domain/MediaSource/JellyfinMediaSource.cs

@@ -6,4 +6,5 @@ public class JellyfinMediaSource : MediaSource
     public string OperatingSystem { get; set; }
     public List<JellyfinConnection> Connections { get; set; }
     public List<JellyfinPathReplacement> PathReplacements { get; set; }
+    public DateTime? LastCollectionsScan { get; set; }
 }

ErsatzTV.Core/Interfaces/Locking/IEntityLocker.cs

@@ -7,6 +7,7 @@ public interface IEntityLocker
     event EventHandler<Type> OnRemoteMediaSourceChanged;
     event EventHandler OnTraktChanged;
     event EventHandler OnEmbyCollectionsChanged;
+    event EventHandler OnJellyfinCollectionsChanged;
     event EventHandler<int> OnPlayoutChanged;
     bool LockLibrary(int libraryId);
     bool UnlockLibrary(int libraryId);
@@ -23,6 +24,9 @@ public interface IEntityLocker
     bool LockEmbyCollections();
     bool UnlockEmbyCollections();
     bool AreEmbyCollectionsLocked();
+    bool LockJellyfinCollections();
+    bool UnlockJellyfinCollections();
+    bool AreJellyfinCollectionsLocked();
     bool LockPlayout(int playoutId);
     bool UnlockPlayout(int playoutId);
     bool IsPlayoutLocked(int playoutId);

ErsatzTV.Core/Interfaces/Repositories/IMediaSourceRepository.cs

@@ -82,5 +82,6 @@ public interface IMediaSourceRepository
     Task<List<int>> DeleteAllEmby();
     Task<Unit> EnableEmbyLibrarySync(IEnumerable<int> libraryIds);
     Task<List<int>> DisableEmbyLibrarySync(List<int> libraryIds);
-    Task<Unit> UpdateLastScan(EmbyMediaSource embyMediaSource);
+    Task<Unit> UpdateLastCollectionScan(EmbyMediaSource embyMediaSource);
+    Task<Unit> UpdateLastCollectionScan(JellyfinMediaSource jellyfinMediaSource);
 }

ErsatzTV.Infrastructure.MySql/Migrations/20230929142116_Add_JellyfinMediaSourceLastCollectionsScan.cs

@@ -0,0 +1,29 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.MySql.Migrations
+{
+    /// <inheritdoc />
+    public partial class Add_JellyfinMediaSourceLastCollectionsScan : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<DateTime>(
+                name: "LastCollectionsScan",
+                table: "JellyfinMediaSource",
+                type: "datetime(6)",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "LastCollectionsScan",
+                table: "JellyfinMediaSource");
+        }
+    }
+}

ErsatzTV.Infrastructure.MySql/Migrations/TvContextModelSnapshot.cs

@@ -2471,6 +2471,9 @@ namespace ErsatzTV.Infrastructure.MySql.Migrations
                 {
                     b.HasBaseType("ErsatzTV.Core.Domain.MediaSource");
 
+                    b.Property<DateTime?>("LastCollectionsScan")
+                        .HasColumnType("datetime(6)");
+
                     b.Property<string>("OperatingSystem")
                         .HasColumnType("longtext");
 

ErsatzTV.Infrastructure.Sqlite/Migrations/20230929142203_Add_JellyfinMediaSourceLastCollectionsScan.cs

@@ -0,0 +1,29 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.Sqlite.Migrations
+{
+    /// <inheritdoc />
+    public partial class Add_JellyfinMediaSourceLastCollectionsScan : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AddColumn<DateTime>(
+                name: "LastCollectionsScan",
+                table: "JellyfinMediaSource",
+                type: "TEXT",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "LastCollectionsScan",
+                table: "JellyfinMediaSource");
+        }
+    }
+}

ErsatzTV.Infrastructure.Sqlite/Migrations/TvContextModelSnapshot.cs

@@ -2469,6 +2469,9 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                 {
                     b.HasBaseType("ErsatzTV.Core.Domain.MediaSource");
 
+                    b.Property<DateTime?>("LastCollectionsScan")
+                        .HasColumnType("TEXT");
+
                     b.Property<string>("OperatingSystem")
                         .HasColumnType("TEXT");
 

ErsatzTV.Infrastructure/Data/Repositories/MediaSourceRepository.cs

@@ -858,11 +858,19 @@ public class MediaSourceRepository : IMediaSourceRepository
         return deletedMediaIds;
     }
 
-    public async Task<Unit> UpdateLastScan(EmbyMediaSource embyMediaSource)
+    public async Task<Unit> UpdateLastCollectionScan(EmbyMediaSource embyMediaSource)
     {
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync();
         return await dbContext.Connection.ExecuteAsync(
             "UPDATE EmbyMediaSource SET LastCollectionsScan = @LastCollectionsScan WHERE Id = @Id",
             new { embyMediaSource.LastCollectionsScan, embyMediaSource.Id }).ToUnit();
     }
+
+    public async Task<Unit> UpdateLastCollectionScan(JellyfinMediaSource jellyfinMediaSource)
+    {
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync();
+        return await dbContext.Connection.ExecuteAsync(
+            "UPDATE JellyfinMediaSource SET LastCollectionsScan = @LastCollectionsScan WHERE Id = @Id",
+            new { jellyfinMediaSource.LastCollectionsScan, jellyfinMediaSource.Id }).ToUnit();
+    }
 }

ErsatzTV.Infrastructure/Locking/EntityLocker.cs

@@ -9,6 +9,7 @@ public class EntityLocker : IEntityLocker
     private readonly ConcurrentDictionary<int, byte> _lockedPlayouts;
     private readonly ConcurrentDictionary<Type, byte> _lockedRemoteMediaSourceTypes;
     private bool _embyCollections;
+    private bool _jellyfinCollections;
     private bool _plex;
     private bool _trakt;
 
@@ -24,6 +25,7 @@ public class EntityLocker : IEntityLocker
     public event EventHandler<Type> OnRemoteMediaSourceChanged;
     public event EventHandler OnTraktChanged;
     public event EventHandler OnEmbyCollectionsChanged;
+    public event EventHandler OnJellyfinCollectionsChanged;
     public event EventHandler<int> OnPlayoutChanged;
 
     public bool LockLibrary(int libraryId)
@@ -158,6 +160,32 @@ public class EntityLocker : IEntityLocker
     }
 
     public bool AreEmbyCollectionsLocked() => _embyCollections;
+    
+    public bool LockJellyfinCollections()
+    {
+        if (!_jellyfinCollections)
+        {
+            _jellyfinCollections = true;
+            OnJellyfinCollectionsChanged?.Invoke(this, EventArgs.Empty);
+            return true;
+        }
+
+        return false;
+    }
+
+    public bool UnlockJellyfinCollections()
+    {
+        if (_jellyfinCollections)
+        {
+            _jellyfinCollections = false;
+            OnJellyfinCollectionsChanged?.Invoke(this, EventArgs.Empty);
+            return true;
+        }
+
+        return false;
+    }
+
+    public bool AreJellyfinCollectionsLocked() => _jellyfinCollections;
 
     public bool LockPlayout(int playoutId)
     {

ErsatzTV.Scanner/Application/Emby/Commands/SynchronizeEmbyCollectionsHandler.cs

@@ -60,7 +60,7 @@ public class SynchronizeEmbyCollectionsHandler : IRequestHandler<SynchronizeEmby
         _mediaSourceRepository.GetEmby(request.EmbyMediaSourceId)
             .Map(o => o.ToValidation<BaseError>("Emby media source does not exist."));
 
-    private Validation<BaseError, ConnectionParameters> MediaSourceMustHaveActiveConnection(
+    private static Validation<BaseError, ConnectionParameters> MediaSourceMustHaveActiveConnection(
         EmbyMediaSource embyMediaSource)
     {
         Option<EmbyConnection> maybeConnection = embyMediaSource.Connections.HeadOrNone();
@@ -93,7 +93,7 @@ public class SynchronizeEmbyCollectionsHandler : IRequestHandler<SynchronizeEmby
             if (result.IsRight)
             {
                 parameters.MediaSource.LastCollectionsScan = DateTime.UtcNow;
-                await _mediaSourceRepository.UpdateLastScan(parameters.MediaSource);
+                await _mediaSourceRepository.UpdateLastCollectionScan(parameters.MediaSource);
             }
 
             return result;

ErsatzTV.Scanner/Application/Emby/Commands/SynchronizeEmbyLibraryByIdHandler.cs

@@ -108,17 +108,14 @@ public class SynchronizeEmbyLibraryByIdHandler : IRequestHandler<SynchronizeEmby
 
     private async Task<Validation<BaseError, RequestParameters>> Validate(
         SynchronizeEmbyLibraryById request) =>
-        (await ValidateConnection(request), await EmbyLibraryMustExist(request),
-            await ValidateLibraryRefreshInterval(), await ValidateFFmpegPath(), await ValidateFFprobePath())
+        (await ValidateConnection(request), await EmbyLibraryMustExist(request), await ValidateLibraryRefreshInterval())
         .Apply(
-            (connectionParameters, embyLibrary, libraryRefreshInterval, ffmpegPath, ffprobePath) =>
+            (connectionParameters, embyLibrary, libraryRefreshInterval) =>
                 new RequestParameters(
                     connectionParameters,
                     embyLibrary,
                     request.ForceScan,
                     libraryRefreshInterval,
-                    ffmpegPath,
-                    ffprobePath,
                     request.DeepScan
                 ));
 
@@ -163,27 +160,11 @@ public class SynchronizeEmbyLibraryByIdHandler : IRequestHandler<SynchronizeEmby
             .FilterT(lri => lri is >= 0 and < 1_000_000)
             .Map(lri => lri.ToValidation<BaseError>("Library refresh interval is invalid"));
 
-    private Task<Validation<BaseError, string>> ValidateFFmpegPath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFmpegPath)
-            .FilterT(File.Exists)
-            .Map(
-                ffmpegPath =>
-                    ffmpegPath.ToValidation<BaseError>("FFmpeg path does not exist on the file system"));
-
-    private Task<Validation<BaseError, string>> ValidateFFprobePath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFprobePath)
-            .FilterT(File.Exists)
-            .Map(
-                ffprobePath =>
-                    ffprobePath.ToValidation<BaseError>("FFprobe path does not exist on the file system"));
-
     private record RequestParameters(
         ConnectionParameters ConnectionParameters,
         EmbyLibrary Library,
         bool ForceScan,
         int LibraryRefreshInterval,
-        string FFmpegPath,
-        string FFprobePath,
         bool DeepScan);
 
     private record ConnectionParameters(EmbyConnection ActiveConnection)

ErsatzTV.Scanner/Application/Jellyfin/Commands/SynchronizeJellyfinCollections.cs

@@ -2,4 +2,4 @@
 
 namespace ErsatzTV.Scanner.Application.Jellyfin;
 
-public record SynchronizeJellyfinCollections(int JellyfinMediaSourceId) : IRequest<Either<BaseError, Unit>>;
+public record SynchronizeJellyfinCollections(int JellyfinMediaSourceId, bool ForceScan) : IRequest<Either<BaseError, Unit>>;

ErsatzTV.Scanner/Application/Jellyfin/Commands/SynchronizeJellyfinCollectionsHandler.cs

@@ -12,15 +12,18 @@ public class
     private readonly IJellyfinSecretStore _jellyfinSecretStore;
     private readonly IMediaSourceRepository _mediaSourceRepository;
     private readonly IJellyfinCollectionScanner _scanner;
+    private readonly IConfigElementRepository _configElementRepository;
 
     public SynchronizeJellyfinCollectionsHandler(
         IMediaSourceRepository mediaSourceRepository,
         IJellyfinSecretStore jellyfinSecretStore,
-        IJellyfinCollectionScanner scanner)
+        IJellyfinCollectionScanner scanner,
+        IConfigElementRepository configElementRepository)
     {
         _mediaSourceRepository = mediaSourceRepository;
         _jellyfinSecretStore = jellyfinSecretStore;
         _scanner = scanner;
+        _configElementRepository = configElementRepository;
     }
 
 
@@ -28,23 +31,38 @@ public class
         SynchronizeJellyfinCollections request,
         CancellationToken cancellationToken)
     {
-        Validation<BaseError, ConnectionParameters> validation = await Validate(request);
+        Validation<BaseError, RequestParameters> validation = await Validate(request);
         return await validation.Match(
             SynchronizeCollections,
             error => Task.FromResult<Either<BaseError, Unit>>(error.Join()));
     }
 
-    private Task<Validation<BaseError, ConnectionParameters>> Validate(SynchronizeJellyfinCollections request) =>
-        MediaSourceMustExist(request)
+    private async Task<Validation<BaseError, RequestParameters>> Validate(SynchronizeJellyfinCollections request)
+    {
+        Task<Validation<BaseError, ConnectionParameters>> mediaSource = MediaSourceMustExist(request)
             .BindT(MediaSourceMustHaveActiveConnection)
             .BindT(MediaSourceMustHaveApiKey);
+        
+        return (await mediaSource, await ValidateLibraryRefreshInterval())
+            .Apply(
+                (connectionParameters, libraryRefreshInterval) => new RequestParameters(
+                    connectionParameters,
+                    connectionParameters.MediaSource,
+                    request.ForceScan,
+                    libraryRefreshInterval));
+    }
+    
+    private Task<Validation<BaseError, int>> ValidateLibraryRefreshInterval() =>
+        _configElementRepository.GetValue<int>(ConfigElementKey.LibraryRefreshInterval)
+            .FilterT(lri => lri is >= 0 and < 1_000_000)
+            .Map(lri => lri.ToValidation<BaseError>("Library refresh interval is invalid"));
 
     private Task<Validation<BaseError, JellyfinMediaSource>> MediaSourceMustExist(
         SynchronizeJellyfinCollections request) =>
         _mediaSourceRepository.GetJellyfin(request.JellyfinMediaSourceId)
             .Map(o => o.ToValidation<BaseError>("Jellyfin media source does not exist."));
 
-    private Validation<BaseError, ConnectionParameters> MediaSourceMustHaveActiveConnection(
+    private static Validation<BaseError, ConnectionParameters> MediaSourceMustHaveActiveConnection(
         JellyfinMediaSource jellyfinMediaSource)
     {
         Option<JellyfinConnection> maybeConnection = jellyfinMediaSource.Connections.HeadOrNone();
@@ -62,15 +80,38 @@ public class
             .ToValidation<BaseError>("Jellyfin media source requires an api key");
     }
 
-    private async Task<Either<BaseError, Unit>> SynchronizeCollections(ConnectionParameters connectionParameters) =>
-        await _scanner.ScanCollections(
-            connectionParameters.ActiveConnection.Address,
-            connectionParameters.ApiKey,
-            connectionParameters.JellyfinMediaSource.Id);
+    private async Task<Either<BaseError, Unit>> SynchronizeCollections(RequestParameters parameters)
+    {
+        var lastScan = new DateTimeOffset(
+            parameters.MediaSource.LastCollectionsScan ?? SystemTime.MinValueUtc,
+            TimeSpan.Zero);
+        DateTimeOffset nextScan = lastScan + TimeSpan.FromHours(parameters.LibraryRefreshInterval);
+        if (parameters.ForceScan || parameters.LibraryRefreshInterval > 0 && nextScan < DateTimeOffset.Now)
+        {
+            Either<BaseError, Unit> result = await _scanner.ScanCollections(
+                parameters.ConnectionParameters.ActiveConnection.Address,
+                parameters.ConnectionParameters.ApiKey,
+                parameters.MediaSource.Id);
+
+            if (result.IsRight)
+            {
+                parameters.MediaSource.LastCollectionsScan = DateTime.UtcNow;
+                await _mediaSourceRepository.UpdateLastCollectionScan(parameters.MediaSource);
+            }
+
+            return result;
+        }
+
+        return Unit.Default;
+    }
+
+    private record RequestParameters(
+        ConnectionParameters ConnectionParameters,
+        JellyfinMediaSource MediaSource,
+        bool ForceScan,
+        int LibraryRefreshInterval);
 
-    private record ConnectionParameters(
-        JellyfinMediaSource JellyfinMediaSource,
-        JellyfinConnection ActiveConnection)
+    private record ConnectionParameters(JellyfinMediaSource MediaSource, JellyfinConnection ActiveConnection)
     {
         public string? ApiKey { get; init; }
     }

ErsatzTV.Scanner/Application/Jellyfin/Commands/SynchronizeJellyfinLibraryByIdHandler.cs

@@ -13,7 +13,6 @@ public class
 {
     private readonly IConfigElementRepository _configElementRepository;
 
-    private readonly IJellyfinApiClient _jellyfinApiClient;
     private readonly IJellyfinMovieLibraryScanner _jellyfinMovieLibraryScanner;
 
     private readonly IJellyfinSecretStore _jellyfinSecretStore;
@@ -24,7 +23,6 @@ public class
     private readonly IMediator _mediator;
 
     public SynchronizeJellyfinLibraryByIdHandler(
-        IJellyfinApiClient jellyfinApiClient,
         IMediator mediator,
         IMediaSourceRepository mediaSourceRepository,
         IJellyfinSecretStore jellyfinSecretStore,
@@ -34,7 +32,6 @@ public class
         IConfigElementRepository configElementRepository,
         ILogger<SynchronizeJellyfinLibraryByIdHandler> logger)
     {
-        _jellyfinApiClient = jellyfinApiClient;
         _mediator = mediator;
         _mediaSourceRepository = mediaSourceRepository;
         _jellyfinSecretStore = jellyfinSecretStore;
@@ -96,22 +93,6 @@ public class
             {
                 parameters.Library.LastScan = DateTime.UtcNow;
                 await _libraryRepository.UpdateLastScan(parameters.Library);
-
-                // need to call get libraries to find library that contains collections (box sets)                
-                await _jellyfinApiClient.GetLibraries(
-                    parameters.ConnectionParameters.ActiveConnection.Address,
-                    parameters.ConnectionParameters.ApiKey);
-
-                Either<BaseError, Unit> collectionResult = await _mediator.Send(
-                    new SynchronizeJellyfinCollections(parameters.Library.MediaSourceId),
-                    cancellationToken);
-
-                collectionResult.BiIter(
-                    _ => _logger.LogDebug("Done synchronizing jellyfin collections"),
-                    error => _logger.LogWarning(
-                        "Unable to synchronize jellyfin collections for source {MediaSourceId}: {Error}",
-                        parameters.Library.MediaSourceId,
-                        error.Value));
             }
 
             foreach (BaseError error in result.LeftToSeq())
@@ -140,16 +121,14 @@ public class
     private async Task<Validation<BaseError, RequestParameters>> Validate(
         SynchronizeJellyfinLibraryById request) =>
         (await ValidateConnection(request), await JellyfinLibraryMustExist(request),
-            await ValidateLibraryRefreshInterval(), await ValidateFFmpegPath(), await ValidateFFprobePath())
+            await ValidateLibraryRefreshInterval())
         .Apply(
-            (connectionParameters, jellyfinLibrary, libraryRefreshInterval, ffmpegPath, ffprobePath) =>
+            (connectionParameters, jellyfinLibrary, libraryRefreshInterval) =>
                 new RequestParameters(
                     connectionParameters,
                     jellyfinLibrary,
                     request.ForceScan,
                     libraryRefreshInterval,
-                    ffmpegPath,
-                    ffprobePath,
                     request.DeepScan
                 ));
 
@@ -194,27 +173,11 @@ public class
             .FilterT(lri => lri is >= 0 and < 1_000_000)
             .Map(lri => lri.ToValidation<BaseError>("Library refresh interval is invalid"));
 
-    private Task<Validation<BaseError, string>> ValidateFFmpegPath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFmpegPath)
-            .FilterT(File.Exists)
-            .Map(
-                ffmpegPath =>
-                    ffmpegPath.ToValidation<BaseError>("FFmpeg path does not exist on the file system"));
-
-    private Task<Validation<BaseError, string>> ValidateFFprobePath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFprobePath)
-            .FilterT(File.Exists)
-            .Map(
-                ffprobePath =>
-                    ffprobePath.ToValidation<BaseError>("FFprobe path does not exist on the file system"));
-
     private record RequestParameters(
         ConnectionParameters ConnectionParameters,
         JellyfinLibrary Library,
         bool ForceScan,
         int LibraryRefreshInterval,
-        string FFmpegPath,
-        string FFprobePath,
         bool DeepScan);
 
     private record ConnectionParameters(JellyfinConnection ActiveConnection)

ErsatzTV.Scanner/Application/Plex/Commands/SynchronizePlexLibraryByIdHandler.cs

@@ -108,17 +108,14 @@ public class SynchronizePlexLibraryByIdHandler : IRequestHandler<SynchronizePlex
     }
 
     private async Task<Validation<BaseError, RequestParameters>> Validate(SynchronizePlexLibraryById request) =>
-        (await ValidateConnection(request), await PlexLibraryMustExist(request),
-            await ValidateLibraryRefreshInterval(), await ValidateFFmpegPath(), await ValidateFFprobePath())
+        (await ValidateConnection(request), await PlexLibraryMustExist(request), await ValidateLibraryRefreshInterval())
         .Apply(
-            (connectionParameters, plexLibrary, libraryRefreshInterval, ffmpegPath, ffprobePath) =>
+            (connectionParameters, plexLibrary, libraryRefreshInterval) =>
                 new RequestParameters(
                     connectionParameters,
                     plexLibrary,
                     request.ForceScan,
                     libraryRefreshInterval,
-                    ffmpegPath,
-                    ffprobePath,
                     request.DeepScan
                 ));
 
@@ -163,27 +160,11 @@ public class SynchronizePlexLibraryByIdHandler : IRequestHandler<SynchronizePlex
             .FilterT(lri => lri is >= 0 and < 1_000_000)
             .Map(lri => lri.ToValidation<BaseError>("Library refresh interval is invalid"));
 
-    private Task<Validation<BaseError, string>> ValidateFFmpegPath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFmpegPath)
-            .FilterT(File.Exists)
-            .Map(
-                ffmpegPath =>
-                    ffmpegPath.ToValidation<BaseError>("FFmpeg path does not exist on the file system"));
-
-    private Task<Validation<BaseError, string>> ValidateFFprobePath() =>
-        _configElementRepository.GetValue<string>(ConfigElementKey.FFprobePath)
-            .FilterT(File.Exists)
-            .Map(
-                ffprobePath =>
-                    ffprobePath.ToValidation<BaseError>("FFprobe path does not exist on the file system"));
-
     private record RequestParameters(
         ConnectionParameters ConnectionParameters,
         PlexLibrary Library,
         bool ForceScan,
         int LibraryRefreshInterval,
-        string FFmpegPath,
-        string FFprobePath,
         bool DeepScan);
 
     private record ConnectionParameters(PlexMediaSource PlexMediaSource, PlexConnection ActiveConnection)

ErsatzTV.Scanner/Core/Jellyfin/JellyfinCollectionScanner.cs

@@ -3,6 +3,7 @@ using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Jellyfin;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.MediaSources;
+using ErsatzTV.Scanner.Application.Jellyfin;
 using Microsoft.Extensions.Logging;
 
 namespace ErsatzTV.Scanner.Core.Jellyfin;
@@ -30,6 +31,20 @@ public class JellyfinCollectionScanner : IJellyfinCollectionScanner
     {
         try
         {
+            // need the jellyfin admin user id for now
+            Either<BaseError, Unit> syncAdminResult = await _mediator.Send(
+                new SynchronizeJellyfinAdminUserId(mediaSourceId),
+                CancellationToken.None);
+
+            foreach (BaseError error in syncAdminResult.LeftToSeq())
+            {
+                _logger.LogError("Error synchronizing jellyfin admin user id: {Error}", error);
+                return error;
+            }
+
+            // need to call get libraries to find library that contains collections (box sets)                
+            await _jellyfinApiClient.GetLibraries(address, apiKey);
+
             var incomingItemIds = new List<string>();
 
             // get all collections from db (item id, etag)

ErsatzTV.Scanner/Worker.cs

@@ -84,6 +84,10 @@ public class Worker : BackgroundService
         scanJellyfinCommand.AddOption(forceOption);
         scanJellyfinCommand.AddOption(deepOption);
 
+        var scanJellyfinCollectionsCommand = new Command("scan-jellyfin-collections", "Scan Jellyfin collections");
+        scanJellyfinCollectionsCommand.AddArgument(mediaSourceIdArgument);
+        scanJellyfinCollectionsCommand.AddOption(forceOption);
+
         scanLocalCommand.SetHandler(
             async context =>
             {
@@ -176,6 +180,24 @@ public class Worker : BackgroundService
                     await mediator.Send(scan, context.GetCancellationToken());
                 }
             });
+        
+        scanJellyfinCollectionsCommand.SetHandler(
+            async context =>
+            {
+                if (IsScanningEnabled())
+                {
+                    bool force = context.ParseResult.GetValueForOption(forceOption);
+                    SetProcessPriority(force);
+
+                    int mediaSourceId = context.ParseResult.GetValueForArgument(mediaSourceIdArgument);
+
+                    using IServiceScope scope = _serviceScopeFactory.CreateScope();
+                    IMediator mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
+
+                    var scan = new SynchronizeJellyfinCollections(mediaSourceId, force);
+                    await mediator.Send(scan, context.GetCancellationToken());
+                }
+            });
 
         var rootCommand = new RootCommand();
         rootCommand.AddCommand(scanLocalCommand);
@@ -183,6 +205,7 @@ public class Worker : BackgroundService
         rootCommand.AddCommand(scanEmbyCommand);
         rootCommand.AddCommand(scanEmbyCollectionsCommand);
         rootCommand.AddCommand(scanJellyfinCommand);
+        rootCommand.AddCommand(scanJellyfinCollectionsCommand);
 
         return rootCommand;
     }

ErsatzTV/Pages/Libraries.razor

@@ -151,6 +151,7 @@
     {
         _locker.OnLibraryChanged += LockChanged;
         _locker.OnEmbyCollectionsChanged += LockChanged;
+        _locker.OnJellyfinCollectionsChanged += LockChanged;
         _courier.Subscribe<LibraryScanProgress>(HandleScanProgress);
     }
 
@@ -201,6 +202,12 @@
                     await _scannerWorkerChannel.WriteAsync(new SynchronizeEmbyCollections(library.MediaSourceId, true));
                 }
                 break;
+            case "jellyfin":
+                if (_locker.LockJellyfinCollections())
+                {
+                    await _scannerWorkerChannel.WriteAsync(new SynchronizeJellyfinCollections(library.MediaSourceId, true));
+                }
+                break;
         }
     }
 
@@ -213,6 +220,8 @@
         {
             case "emby":
                 return _locker.AreEmbyCollectionsLocked();
+            case "jellyfin":
+                return _locker.AreJellyfinCollectionsLocked();
         }
 
         return false;
@@ -238,6 +247,7 @@
     {
         _locker.OnLibraryChanged -= LockChanged;
         _locker.OnEmbyCollectionsChanged -= LockChanged;
+        _locker.OnJellyfinCollectionsChanged -= LockChanged;
         _courier.UnSubscribe<LibraryScanProgress>(HandleScanProgress);
 
         _cts.Cancel();

ErsatzTV/Services/ScannerService.cs

@@ -55,6 +55,9 @@ public class ScannerService : BackgroundService
                         case ISynchronizeJellyfinLibraryById synchronizeJellyfinLibraryById:
                             requestTask = SynchronizeJellyfinLibrary(synchronizeJellyfinLibraryById, stoppingToken);
                             break;
+                        case SynchronizeJellyfinCollections synchronizeJellyfinCollections:
+                            requestTask = SynchronizeJellyfinCollections(synchronizeJellyfinCollections, stoppingToken);
+                            break;
                         case SynchronizeEmbyLibraries synchronizeEmbyLibraries:
                             requestTask = SynchronizeLibraries(synchronizeEmbyLibraries, stoppingToken);
                             break;
@@ -231,6 +234,35 @@ public class ScannerService : BackgroundService
             entityLocker.UnlockLibrary(request.JellyfinLibraryId);
         }
     }
+    
+    private async Task SynchronizeJellyfinCollections(
+        SynchronizeJellyfinCollections request,
+        CancellationToken cancellationToken)
+    {
+        using IServiceScope scope = _serviceScopeFactory.CreateScope();
+        IMediator mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
+        IEntityLocker entityLocker = scope.ServiceProvider.GetRequiredService<IEntityLocker>();
+
+        Either<BaseError, Unit> result = await mediator.Send(request, cancellationToken);
+        result.BiIter(
+            _ => _logger.LogDebug("Done synchronizing jellyfin collections"),
+            error =>
+            {
+                if (error is ScanIsNotRequired)
+                {
+                    _logger.LogDebug("Scan is not required for jellyfin collections at this time");
+                }
+                else
+                {
+                    _logger.LogWarning("Unable to synchronize jellyfin collections: {Error}", error.Value);
+                }
+            });
+
+        if (entityLocker.AreJellyfinCollectionsLocked())
+        {
+            entityLocker.UnlockJellyfinCollections();
+        }
+    }
 
     private async Task SynchronizeLibraries(SynchronizeEmbyLibraries request, CancellationToken cancellationToken)
     {

ErsatzTV/Services/SchedulerService.cs

@@ -250,8 +250,12 @@ public class SchedulerService : BackgroundService
         using IServiceScope scope = _serviceScopeFactory.CreateScope();
         TvContext dbContext = scope.ServiceProvider.GetRequiredService<TvContext>();
 
+        var mediaSourceIds = new System.Collections.Generic.HashSet<int>();
+
         foreach (JellyfinLibrary library in dbContext.JellyfinLibraries.Filter(l => l.ShouldSyncItems))
         {
+            mediaSourceIds.Add(library.MediaSourceId);
+
             if (_entityLocker.LockLibrary(library.Id))
             {
                 await _scannerWorkerChannel.WriteAsync(
@@ -259,6 +263,13 @@ public class SchedulerService : BackgroundService
                     cancellationToken);
             }
         }
+        
+        foreach (int mediaSourceId in mediaSourceIds)
+        {
+            await _scannerWorkerChannel.WriteAsync(
+                new SynchronizeJellyfinCollections(mediaSourceId, false),
+                cancellationToken);
+        }
     }
 
     private async Task ScanEmbyMediaSources(CancellationToken cancellationToken)