force music video library scan (#159)

* clean up genre, tag, studio orphans

* enforce foreign keys at connection level

* wip

* fix fragment scroll offset

* fix see all link for music videos

* add fake artist metadata

* not null artist id

* add artist scanning

* remove improperly named music videos

* code cleanup

* add artists to search results and collections

* clean up music video metadata / artist

* add artist view

* show music videos on artist page

* add music video artwork placeholder

.editorconfig

@@ -79,3 +79,7 @@ indent_size=2
 indent_style=space
 indent_size=4
 tab_width=4
+
+[*.yml]
+indent_style = space
+indent_size = 2

.github/workflows/ci.yml

@@ -1,5 +1,6 @@
 name: Build
 on:
+  workflow_dispatch:
   pull_request:
   push:
     branches:
@@ -35,7 +36,7 @@ jobs:
     name: Build & Publish to Docker Hub
     needs: build_and_test
     runs-on: ubuntu-latest
-    if: github.event_name == 'push' && !contains(github.event.head_commit.message, '[no ci]')
+    if: github.event_name == 'push' && !contains(github.event.head_commit.message, '[no docker]')
     steps:
       - name: Checkout
         uses: actions/checkout@v2

.github/workflows/docs.yml

@@ -0,0 +1,19 @@
+name: Publish docs via GitHub Pages
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Deploy docs
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout master
+        uses: actions/checkout@v1
+
+      - name: Deploy docs
+        uses: mhausenblas/mkdocs-deploy-gh-pages@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CUSTOM_DOMAIN: ersatztv.org

ErsatzTV.Application/Artists/ArtistViewModel.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace ErsatzTV.Application.Artists
+{
+    public record ArtistViewModel(
+        string Name,
+        string Disambiguation,
+        string Biography,
+        string Thumbnail,
+        string FanArt,
+        List<string> Genres,
+        List<string> Styles,
+        List<string> Moods);
+}

ErsatzTV.Application/Artists/Mapper.cs

@@ -0,0 +1,27 @@
+using System.Linq;
+using ErsatzTV.Core.Domain;
+using static LanguageExt.Prelude;
+
+namespace ErsatzTV.Application.Artists
+{
+    internal static class Mapper
+    {
+        internal static ArtistViewModel ProjectToViewModel(Artist artist)
+        {
+            ArtistMetadata metadata = Optional(artist.ArtistMetadata).Flatten().Head();
+            return new ArtistViewModel(
+                metadata.Title,
+                metadata.Disambiguation,
+                metadata.Biography,
+                Artwork(metadata, ArtworkKind.Thumbnail),
+                Artwork(metadata, ArtworkKind.FanArt),
+                metadata.Genres.Map(g => g.Name).ToList(),
+                metadata.Styles.Map(s => s.Name).ToList(),
+                metadata.Moods.Map(m => m.Name).ToList());
+        }
+
+        private static string Artwork(Metadata metadata, ArtworkKind artworkKind) =>
+            Optional(metadata.Artwork.FirstOrDefault(a => a.ArtworkKind == artworkKind))
+                .Match(a => a.Path, string.Empty);
+    }
+}

ErsatzTV.Application/Artists/Queries/GetArtistById.cs

@@ -0,0 +1,7 @@
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.Artists.Queries
+{
+    public record GetArtistById(int ArtistId) : IRequest<Option<ArtistViewModel>>;
+}

ErsatzTV.Application/Artists/Queries/GetArtistByIdHandler.cs

@@ -0,0 +1,21 @@
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+using static ErsatzTV.Application.Artists.Mapper;
+
+namespace ErsatzTV.Application.Artists.Queries
+{
+    public class GetArtistByIdHandler : IRequestHandler<GetArtistById, Option<ArtistViewModel>>
+    {
+        private readonly IArtistRepository _artistRepository;
+
+        public GetArtistByIdHandler(IArtistRepository artistRepository) => _artistRepository = artistRepository;
+
+        public Task<Option<ArtistViewModel>> Handle(
+            GetArtistById request,
+            CancellationToken cancellationToken) =>
+            _artistRepository.GetArtist(request.ArtistId).MapT(ProjectToViewModel);
+    }
+}

ErsatzTV.Application/FFmpegProfiles/Commands/CreateFFmpegProfileHandler.cs

@@ -50,7 +50,7 @@ namespace ErsatzTV.Application.FFmpegProfiles.Commands
                     AudioCodec = request.AudioCodec,
                     AudioBitrate = request.AudioBitrate,
                     AudioBufferSize = request.AudioBufferSize,
-                    NormalizeLoudness= request.NormalizeLoudness,
+                    NormalizeLoudness = request.NormalizeLoudness,
                     AudioChannels = request.AudioChannels,
                     AudioSampleRate = request.AudioSampleRate,
                     NormalizeAudio = request.NormalizeAudio,

ErsatzTV.Application/HDHR/Commands/UpdateHDHRTunerCount.cs

@@ -0,0 +1,7 @@
+using ErsatzTV.Core;
+using LanguageExt;
+
+namespace ErsatzTV.Application.HDHR.Commands
+{
+    public record UpdateHDHRTunerCount(int TunerCount) : MediatR.IRequest<Either<BaseError, Unit>>;
+}

ErsatzTV.Application/HDHR/Commands/UpdateHDHRTunerCountHandler.cs

@@ -0,0 +1,45 @@
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using static LanguageExt.Prelude;
+
+namespace ErsatzTV.Application.HDHR.Commands
+{
+    public class UpdateHDHRTunerCountHandler : MediatR.IRequestHandler<UpdateHDHRTunerCount, Either<BaseError, Unit>>
+    {
+        private readonly IConfigElementRepository _configElementRepository;
+
+        public UpdateHDHRTunerCountHandler(IConfigElementRepository configElementRepository) =>
+            _configElementRepository = configElementRepository;
+
+        public Task<Either<BaseError, Unit>> Handle(
+            UpdateHDHRTunerCount request,
+            CancellationToken cancellationToken) =>
+            Validate(request)
+                .MapT(_ => Upsert(ConfigElementKey.HDHRTunerCount, request.TunerCount.ToString()))
+                .Bind(v => v.ToEitherAsync());
+
+        private Task<Validation<BaseError, Unit>> Validate(UpdateHDHRTunerCount request) =>
+            Optional(request.TunerCount)
+                .Filter(tc => tc > 0)
+                .Map(_ => Unit.Default)
+                .ToValidation<BaseError>("Tuner count must be greater than zero")
+                .AsTask();
+
+        private Task<Unit> Upsert(ConfigElementKey key, string value) =>
+            _configElementRepository.Get(key).Match(
+                ce =>
+                {
+                    ce.Value = value;
+                    return _configElementRepository.Update(ce);
+                },
+                () =>
+                {
+                    var ce = new ConfigElement { Key = key.Key, Value = value };
+                    return _configElementRepository.Add(ce);
+                }).ToUnit();
+    }
+}

ErsatzTV.Application/HDHR/Queries/GetHDHRTunerCount.cs

@@ -0,0 +1,6 @@
+using MediatR;
+
+namespace ErsatzTV.Application.HDHR.Queries
+{
+    public record GetHDHRTunerCount : IRequest<int>;
+}

ErsatzTV.Application/HDHR/Queries/GetHDHRTunerCountHandler.cs

@@ -0,0 +1,21 @@
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.HDHR.Queries
+{
+    public class GetHDHRTunerCountHandler : IRequestHandler<GetHDHRTunerCount, int>
+    {
+        private readonly IConfigElementRepository _configElementRepository;
+
+        public GetHDHRTunerCountHandler(IConfigElementRepository configElementRepository) =>
+            _configElementRepository = configElementRepository;
+
+        public Task<int> Handle(GetHDHRTunerCount request, CancellationToken cancellationToken) =>
+            _configElementRepository.GetValue<int>(ConfigElementKey.HDHRTunerCount)
+                .Map(result => result.IfNone(2));
+    }
+}

ErsatzTV.Application/Logs/LogEntryViewModel.cs

@@ -1,12 +1,12 @@
 using System;
+using Serilog.Events;
 
 namespace ErsatzTV.Application.Logs
 {
     public record LogEntryViewModel(
         int Id,
         DateTime Timestamp,
-        string Level,
+        LogEventLevel Level,
         string Exception,
-        string RenderedMessage,
-        string Properties);
+        string Message);
 }

ErsatzTV.Application/Logs/Mapper.cs

@@ -1,16 +1,45 @@
-using ErsatzTV.Core.Domain;
+using System;
+using System.Collections.Generic;
+using ErsatzTV.Core.Domain;
+using Newtonsoft.Json.Linq;
+using Serilog.Events;
 
 namespace ErsatzTV.Application.Logs
 {
     internal static class Mapper
     {
-        internal static LogEntryViewModel ProjectToViewModel(LogEntry logEntry) =>
-            new(
+        internal static LogEntryViewModel ProjectToViewModel(LogEntry logEntry)
+        {
+            string message = logEntry.RenderedMessage;
+            if (!string.IsNullOrWhiteSpace(logEntry.Properties))
+            {
+                foreach (KeyValuePair<string, JToken> property in JObject.Parse(logEntry.Properties))
+                {
+                    var token = $"{{{property.Key}}}";
+                    if (message.Contains(token))
+                    {
+                        message = message.Replace(token, property.Value.ToString());
+                    }
+
+                    var destructureToken = $"{{@{property.Key}}}";
+                    if (message.Contains(destructureToken))
+                    {
+                        message = message.Replace(destructureToken, property.Value.ToString());
+                    }
+                }
+            }
+
+            if (!Enum.TryParse(logEntry.Level, out LogEventLevel level))
+            {
+                level = LogEventLevel.Debug;
+            }
+
+            return new LogEntryViewModel(
                 logEntry.Id,
                 logEntry.Timestamp,
-                logEntry.Level,
+                level,
                 logEntry.Exception,
-                logEntry.RenderedMessage,
-                logEntry.Properties);
+                message);
+        }
     }
 }

ErsatzTV.Application/MediaCards/ArtistCardResultsViewModel.cs

@@ -0,0 +1,11 @@
+using System.Collections.Generic;
+using ErsatzTV.Core.Search;
+using LanguageExt;
+
+namespace ErsatzTV.Application.MediaCards
+{
+    public record ArtistCardResultsViewModel(
+        int Count,
+        List<ArtistCardViewModel> Cards,
+        Option<SearchPageMap> PageMap);
+}

ErsatzTV.Application/MediaCards/ArtistCardViewModel.cs

@@ -0,0 +1,12 @@
+namespace ErsatzTV.Application.MediaCards
+{
+    public record ArtistCardViewModel
+        (int ArtistId, string Title, string Subtitle, string SortTitle, string Poster) : MediaCardViewModel(
+            ArtistId,
+            Title,
+            Subtitle,
+            SortTitle,
+            Poster)
+    {
+    }
+}

ErsatzTV.Application/MediaCards/CollectionCardResultsViewModel.cs

@@ -8,6 +8,7 @@ namespace ErsatzTV.Application.MediaCards
         List<TelevisionShowCardViewModel> ShowCards,
         List<TelevisionSeasonCardViewModel> SeasonCards,
         List<TelevisionEpisodeCardViewModel> EpisodeCards,
+        List<ArtistCardViewModel> ArtistCards,
         List<MusicVideoCardViewModel> MusicVideoCards)
     {
         public bool UseCustomPlaybackOrder { get; set; }

ErsatzTV.Application/MediaCards/Mapper.cs

@@ -55,11 +55,20 @@ namespace ErsatzTV.Application.MediaCards
         internal static MusicVideoCardViewModel ProjectToViewModel(MusicVideoMetadata musicVideoMetadata) =>
             new(
                 musicVideoMetadata.MusicVideoId,
-                $"{musicVideoMetadata.Title} ({musicVideoMetadata.Artist})",
-                musicVideoMetadata.Year?.ToString(),
+                musicVideoMetadata.Title,
+                musicVideoMetadata.MusicVideo.Artist.ArtistMetadata.Head().Title,
                 musicVideoMetadata.SortTitle,
+                musicVideoMetadata.Plot,
                 GetThumbnail(musicVideoMetadata));
 
+        internal static ArtistCardViewModel ProjectToViewModel(ArtistMetadata artistMetadata) =>
+            new(
+                artistMetadata.ArtistId,
+                artistMetadata.Title,
+                artistMetadata.Disambiguation,
+                artistMetadata.SortTitle,
+                GetThumbnail(artistMetadata));
+
         internal static CollectionCardResultsViewModel
             ProjectToViewModel(Collection collection) =>
             new(
@@ -73,6 +82,7 @@ namespace ErsatzTV.Application.MediaCards
                 collection.MediaItems.OfType<Season>().Map(ProjectToViewModel).ToList(),
                 collection.MediaItems.OfType<Episode>().Map(e => ProjectToViewModel(e.EpisodeMetadata.Head()))
                     .ToList(),
+                collection.MediaItems.OfType<Artist>().Map(a  => ProjectToViewModel(a.ArtistMetadata.Head())).ToList(),
                 collection.MediaItems.OfType<MusicVideo>().Map(mv => ProjectToViewModel(mv.MusicVideoMetadata.Head()))
                     .ToList()) { UseCustomPlaybackOrder = collection.UseCustomPlaybackOrder };
 

ErsatzTV.Application/MediaCards/MusicVideoCardViewModel.cs

@@ -1,7 +1,7 @@
 namespace ErsatzTV.Application.MediaCards
 {
     public record MusicVideoCardViewModel
-        (int MusicVideoId, string Title, string Subtitle, string SortTitle, string Poster) : MediaCardViewModel(
+        (int MusicVideoId, string Title, string Subtitle, string SortTitle, string Plot, string Poster) : MediaCardViewModel(
             MusicVideoId,
             Title,
             Subtitle,

ErsatzTV.Application/MediaCards/Queries/GetMusicVideoCards.cs

@@ -0,0 +1,7 @@
+using MediatR;
+
+namespace ErsatzTV.Application.MediaCards.Queries
+{
+    public record GetMusicVideoCards
+        (int ArtistId, int PageNumber, int PageSize) : IRequest<MusicVideoCardResultsViewModel>;
+}

ErsatzTV.Application/MediaCards/Queries/GetMusicVideoCardsHandler.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+using static ErsatzTV.Application.MediaCards.Mapper;
+using static LanguageExt.Prelude;
+
+namespace ErsatzTV.Application.MediaCards.Queries
+{
+    public class GetMusicVideoCardsHandler : IRequestHandler<GetMusicVideoCards, MusicVideoCardResultsViewModel>
+    {
+        private readonly IMusicVideoRepository _musicVideoRepository;
+
+        public GetMusicVideoCardsHandler(IMusicVideoRepository musicVideoRepository) =>
+            _musicVideoRepository = musicVideoRepository;
+
+        public async Task<MusicVideoCardResultsViewModel> Handle(
+            GetMusicVideoCards request,
+            CancellationToken cancellationToken)
+        {
+            int count = await _musicVideoRepository.GetMusicVideoCount(request.ArtistId);
+
+            List<MusicVideoCardViewModel> results = await _musicVideoRepository
+                .GetPagedMusicVideos(request.ArtistId, request.PageNumber, request.PageSize)
+                .Map(list => list.Map(ProjectToViewModel).ToList());
+
+            return new MusicVideoCardResultsViewModel(count, results, None);
+        }
+    }
+}

ErsatzTV.Application/MediaCollections/Commands/AddArtistToCollection.cs

@@ -0,0 +1,8 @@
+using ErsatzTV.Core;
+using LanguageExt;
+
+namespace ErsatzTV.Application.MediaCollections.Commands
+{
+    public record AddArtistToCollection
+        (int CollectionId, int ArtistId) : MediatR.IRequest<Either<BaseError, Unit>>;
+}

ErsatzTV.Application/MediaCollections/Commands/AddArtistToCollectionHandler.cs

@@ -0,0 +1,68 @@
+using System.Threading;
+using System.Threading.Channels;
+using System.Threading.Tasks;
+using ErsatzTV.Application.Playouts.Commands;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+
+namespace ErsatzTV.Application.MediaCollections.Commands
+{
+    public class
+        AddArtistToCollectionHandler : MediatR.IRequestHandler<AddArtistToCollection, Either<BaseError, Unit>>
+    {
+        private readonly ChannelWriter<IBackgroundServiceRequest> _channel;
+        private readonly IMediaCollectionRepository _mediaCollectionRepository;
+        private readonly IArtistRepository _artistRepository;
+
+        public AddArtistToCollectionHandler(
+            IMediaCollectionRepository mediaCollectionRepository,
+            IArtistRepository artistRepository,
+            ChannelWriter<IBackgroundServiceRequest> channel)
+        {
+            _mediaCollectionRepository = mediaCollectionRepository;
+            _artistRepository = artistRepository;
+            _channel = channel;
+        }
+
+        public Task<Either<BaseError, Unit>> Handle(
+            AddArtistToCollection request,
+            CancellationToken cancellationToken) =>
+            Validate(request)
+                .MapT(_ => ApplyAddArtistRequest(request))
+                .Bind(v => v.ToEitherAsync());
+
+        private async Task<Unit> ApplyAddArtistRequest(AddArtistToCollection request)
+        {
+            if (await _mediaCollectionRepository.AddMediaItem(request.CollectionId, request.ArtistId))
+            {
+                // rebuild all playouts that use this collection
+                foreach (int playoutId in await _mediaCollectionRepository
+                    .PlayoutIdsUsingCollection(request.CollectionId))
+                {
+                    await _channel.WriteAsync(new BuildPlayout(playoutId, true));
+                }
+            }
+
+            return Unit.Default;
+        }
+
+        private async Task<Validation<BaseError, Unit>> Validate(AddArtistToCollection request) =>
+            (await CollectionMustExist(request), await ValidateArtist(request))
+            .Apply((_, _) => Unit.Default);
+
+        private Task<Validation<BaseError, Unit>> CollectionMustExist(AddArtistToCollection request) =>
+            _mediaCollectionRepository.GetCollectionWithItems(request.CollectionId)
+                .MapT(_ => Unit.Default)
+                .Map(v => v.ToValidation<BaseError>("Collection does not exist."));
+
+        private Task<Validation<BaseError, Unit>> ValidateArtist(AddArtistToCollection request) =>
+            LoadArtist(request)
+                .MapT(_ => Unit.Default)
+                .Map(v => v.ToValidation<BaseError>("Music video does not exist"));
+
+        private Task<Option<Artist>> LoadArtist(AddArtistToCollection request) =>
+            _artistRepository.GetArtist(request.ArtistId);
+    }
+}

ErsatzTV.Application/MediaCollections/Commands/AddItemsToCollection.cs

@@ -9,5 +9,6 @@ namespace ErsatzTV.Application.MediaCollections.Commands
         int CollectionId,
         List<int> MovieIds,
         List<int> ShowIds,
+        List<int> ArtistIds,
         List<int> MusicVideoIds) : MediatR.IRequest<Either<BaseError, Unit>>;
 }

ErsatzTV.Application/MediaCollections/Commands/AddItemsToCollectionHandler.cs

@@ -39,9 +39,13 @@ namespace ErsatzTV.Application.MediaCollections.Commands
 
         private async Task<Unit> ApplyAddItemsRequest(AddItemsToCollection request)
         {
-            if (await _mediaCollectionRepository.AddMediaItems(
-                request.CollectionId,
-                request.MovieIds.Append(request.ShowIds).Append(request.MusicVideoIds).ToList()))
+            var allItems = request.MovieIds
+                .Append(request.ShowIds)
+                .Append(request.ArtistIds)
+                .Append(request.MusicVideoIds)
+                .ToList();
+
+            if (await _mediaCollectionRepository.AddMediaItems(request.CollectionId, allItems))
             {
                 // rebuild all playouts that use this collection
                 foreach (int playoutId in await _mediaCollectionRepository

ErsatzTV.Application/MediaCollections/PagedMediaCollectionsViewModel.cs

@@ -0,0 +1,6 @@
+using System.Collections.Generic;
+
+namespace ErsatzTV.Application.MediaCollections
+{
+    public record PagedMediaCollectionsViewModel(int TotalCount, List<MediaCollectionViewModel> Page);
+}

ErsatzTV.Application/MediaCollections/Queries/GetPagedCollections.cs

@@ -0,0 +1,6 @@
+using MediatR;
+
+namespace ErsatzTV.Application.MediaCollections.Queries
+{
+    public record GetPagedCollections(int PageNum, int PageSize) : IRequest<PagedMediaCollectionsViewModel>;
+}

ErsatzTV.Application/MediaCollections/Queries/GetPagedCollectionsHandler.cs

@@ -0,0 +1,32 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+using static ErsatzTV.Application.MediaCollections.Mapper;
+
+namespace ErsatzTV.Application.MediaCollections.Queries
+{
+    public class GetPagedCollectionsHandler : IRequestHandler<GetPagedCollections, PagedMediaCollectionsViewModel>
+    {
+        private readonly IMediaCollectionRepository _mediaCollectionRepository;
+
+        public GetPagedCollectionsHandler(IMediaCollectionRepository mediaCollectionRepository) =>
+            _mediaCollectionRepository = mediaCollectionRepository;
+
+        public async Task<PagedMediaCollectionsViewModel> Handle(
+            GetPagedCollections request,
+            CancellationToken cancellationToken)
+        {
+            int count = await _mediaCollectionRepository.CountAllCollections();
+
+            List<MediaCollectionViewModel> page = await _mediaCollectionRepository
+                .GetPagedCollections(request.PageNum, request.PageSize)
+                .Map(list => list.Map(ProjectToViewModel).ToList());
+
+            return new PagedMediaCollectionsViewModel(count, page);
+        }
+    }
+}

ErsatzTV.Application/MediaItems/Queries/GetAllLanguageCodes.cs

@@ -0,0 +1,8 @@
+using System.Collections.Generic;
+using System.Globalization;
+using MediatR;
+
+namespace ErsatzTV.Application.MediaItems.Queries
+{
+    public record GetAllLanguageCodes : IRequest<List<CultureInfo>>;
+}

ErsatzTV.Application/MediaItems/Queries/GetAllLanguageCodesHandler.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.MediaItems.Queries
+{
+    public class GetAllLanguageCodesHandler : IRequestHandler<GetAllLanguageCodes, List<CultureInfo>>
+    {
+        private readonly IMediaItemRepository _mediaItemRepository;
+
+        public GetAllLanguageCodesHandler(IMediaItemRepository mediaItemRepository) =>
+            _mediaItemRepository = mediaItemRepository;
+
+        public async Task<List<CultureInfo>> Handle(GetAllLanguageCodes request, CancellationToken cancellationToken)
+        {
+            var result = new List<CultureInfo>();
+
+            CultureInfo[] allCultures = CultureInfo.GetCultures(CultureTypes.AllCultures);
+            List<string> allLanguageCodes = await _mediaItemRepository.GetAllLanguageCodes();
+            foreach (string code in allLanguageCodes)
+            {
+                Option<CultureInfo> maybeCulture = allCultures.Find(
+                    ci => string.Equals(code, ci.ThreeLetterISOLanguageName, StringComparison.OrdinalIgnoreCase));
+                await maybeCulture.IfSomeAsync(cultureInfo => result.Add(cultureInfo));
+            }
+
+            return result;
+        }
+    }
+}

ErsatzTV.Application/MediaSources/Commands/ScanLocalLibrary.cs

@@ -8,24 +8,15 @@ namespace ErsatzTV.Application.MediaSources.Commands
     {
         int LibraryId { get; }
         bool ForceScan { get; }
-        bool Rescan { get; }
     }
 
     public record ScanLocalLibraryIfNeeded(int LibraryId) : IScanLocalLibrary
     {
         public bool ForceScan => false;
-        public bool Rescan => false;
     }
 
     public record ForceScanLocalLibrary(int LibraryId) : IScanLocalLibrary
     {
         public bool ForceScan => true;
-        public bool Rescan => false;
-    }
-
-    public record ForceRescanLocalLibrary(int LibraryId) : IScanLocalLibrary
-    {
-        public bool ForceScan => true;
-        public bool Rescan => true;
     }
 }

ErsatzTV.Application/MediaSources/Commands/ScanLocalLibraryHandler.cs

@@ -8,6 +8,7 @@ using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Locking;
 using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Metadata;
 using LanguageExt;
 using MediatR;
 using Microsoft.Extensions.Logging;
@@ -16,13 +17,13 @@ using Unit = LanguageExt.Unit;
 namespace ErsatzTV.Application.MediaSources.Commands
 {
     public class ScanLocalLibraryHandler : IRequestHandler<ForceScanLocalLibrary, Either<BaseError, string>>,
-        IRequestHandler<ScanLocalLibraryIfNeeded, Either<BaseError, string>>,
-        IRequestHandler<ForceRescanLocalLibrary, Either<BaseError, string>>
+        IRequestHandler<ScanLocalLibraryIfNeeded, Either<BaseError, string>>
     {
         private readonly IConfigElementRepository _configElementRepository;
         private readonly IEntityLocker _entityLocker;
         private readonly ILibraryRepository _libraryRepository;
         private readonly ILogger<ScanLocalLibraryHandler> _logger;
+        private readonly IMediator _mediator;
         private readonly IMovieFolderScanner _movieFolderScanner;
         private readonly IMusicVideoFolderScanner _musicVideoFolderScanner;
         private readonly ITelevisionFolderScanner _televisionFolderScanner;
@@ -34,6 +35,7 @@ namespace ErsatzTV.Application.MediaSources.Commands
             ITelevisionFolderScanner televisionFolderScanner,
             IMusicVideoFolderScanner musicVideoFolderScanner,
             IEntityLocker entityLocker,
+            IMediator mediator,
             ILogger<ScanLocalLibraryHandler> logger)
         {
             _libraryRepository = libraryRepository;
@@ -42,13 +44,10 @@ namespace ErsatzTV.Application.MediaSources.Commands
             _televisionFolderScanner = televisionFolderScanner;
             _musicVideoFolderScanner = musicVideoFolderScanner;
             _entityLocker = entityLocker;
+            _mediator = mediator;
             _logger = logger;
         }
 
-        public Task<Either<BaseError, string>> Handle(
-            ForceRescanLocalLibrary request,
-            CancellationToken cancellationToken) => Handle(request);
-
         public Task<Either<BaseError, string>> Handle(
             ForceScanLocalLibrary request,
             CancellationToken cancellationToken) => Handle(request);
@@ -65,47 +64,63 @@ namespace ErsatzTV.Application.MediaSources.Commands
 
         private async Task<Unit> PerformScan(RequestParameters parameters)
         {
-            (LocalLibrary localLibrary, string ffprobePath, bool forceScan, bool rescan) = parameters;
+            (LocalLibrary localLibrary, string ffprobePath, bool forceScan) = parameters;
 
-            var lastScan = new DateTimeOffset(localLibrary.LastScan ?? DateTime.MinValue, TimeSpan.Zero);
-            if (forceScan || lastScan < DateTimeOffset.Now - TimeSpan.FromHours(6))
+            var sw = new Stopwatch();
+            sw.Start();
+
+            for (var i = 0; i < localLibrary.Paths.Count; i++)
             {
-                var sw = new Stopwatch();
-                sw.Start();
+                LibraryPath libraryPath = localLibrary.Paths[i];
 
-                DateTimeOffset effectiveLastScan = rescan ? DateTimeOffset.MinValue : lastScan;
+                decimal progressMin = (decimal) i / localLibrary.Paths.Count;
+                decimal progressMax = (decimal) (i + 1) / localLibrary.Paths.Count;
 
-                foreach (LibraryPath libraryPath in localLibrary.Paths)
+                var lastScan = new DateTimeOffset(libraryPath.LastScan ?? DateTime.MinValue, TimeSpan.Zero);
+                if (forceScan || lastScan < DateTimeOffset.Now - TimeSpan.FromHours(6))
                 {
                     switch (localLibrary.MediaKind)
                     {
                         case LibraryMediaKind.Movies:
-                            await _movieFolderScanner.ScanFolder(libraryPath, ffprobePath, effectiveLastScan);
+                            await _movieFolderScanner.ScanFolder(
+                                libraryPath,
+                                ffprobePath,
+                                lastScan,
+                                progressMin,
+                                progressMax);
                             break;
                         case LibraryMediaKind.Shows:
-                            await _televisionFolderScanner.ScanFolder(libraryPath, ffprobePath, effectiveLastScan);
+                            await _televisionFolderScanner.ScanFolder(
+                                libraryPath,
+                                ffprobePath,
+                                lastScan,
+                                progressMin,
+                                progressMax);
                             break;
                         case LibraryMediaKind.MusicVideos:
-                            await _musicVideoFolderScanner.ScanFolder(libraryPath, ffprobePath, effectiveLastScan);
+                            await _musicVideoFolderScanner.ScanFolder(
+                                libraryPath,
+                                ffprobePath,
+                                lastScan,
+                                progressMin,
+                                progressMax);
                             break;
                     }
+
+                    libraryPath.LastScan = DateTime.UtcNow;
+                    await _libraryRepository.UpdateLastScan(libraryPath);
                 }
 
-                localLibrary.LastScan = DateTime.UtcNow;
-                await _libraryRepository.UpdateLastScan(localLibrary);
+                await _mediator.Publish(new LibraryScanProgress(libraryPath.LibraryId, progressMax));
+            }
 
-                sw.Stop();
-                _logger.LogDebug(
-                    "Scan of library {Name} completed in {Duration}",
-                    localLibrary.Name,
-                    TimeSpan.FromMilliseconds(sw.ElapsedMilliseconds));
-            }
-            else
-            {
-                _logger.LogDebug(
-                    "Skipping unforced scan of library {Name}",
-                    localLibrary.Name);
-            }
+            sw.Stop();
+            _logger.LogDebug(
+                "Scan of library {Name} completed in {Duration}",
+                localLibrary.Name,
+                TimeSpan.FromMilliseconds(sw.ElapsedMilliseconds));
+
+            await _mediator.Publish(new LibraryScanProgress(localLibrary.Id, 0));
 
             _entityLocker.UnlockLibrary(localLibrary.Id);
             return Unit.Default;
@@ -117,8 +132,7 @@ namespace ErsatzTV.Application.MediaSources.Commands
                 (library, ffprobePath) => new RequestParameters(
                     library,
                     ffprobePath,
-                    request.ForceScan,
-                    request.Rescan));
+                    request.ForceScan));
 
         private Task<Validation<BaseError, LocalLibrary>> LocalLibraryMustExist(
             IScanLocalLibrary request) =>
@@ -133,6 +147,6 @@ namespace ErsatzTV.Application.MediaSources.Commands
                     ffprobePath =>
                         ffprobePath.ToValidation<BaseError>("FFprobe path does not exist on the file system"));
 
-        private record RequestParameters(LocalLibrary LocalLibrary, string FFprobePath, bool ForceScan, bool Rescan);
+        private record RequestParameters(LocalLibrary LocalLibrary, string FFprobePath, bool ForceScan);
     }
 }

ErsatzTV.Application/Playouts/Mapper.cs

@@ -37,7 +37,10 @@ namespace ErsatzTV.Application.Playouts
                 case Movie m:
                     return m.MovieMetadata.HeadOrNone().Map(mm => mm.Title).IfNone("[unknown movie]");
                 case MusicVideo mv:
-                    return mv.MusicVideoMetadata.HeadOrNone().Map(mvm => $"{mvm.Artist} - {mvm.Title}")
+                    string artistName = mv.Artist.ArtistMetadata.HeadOrNone()
+                        .Map(am => $"{am.Title} - ").IfNone(string.Empty);
+                    return mv.MusicVideoMetadata.HeadOrNone()
+                        .Map(mvm => $"{artistName}{mvm.Title}")
                         .IfNone("[unknown music video]");
                 default:
                     return string.Empty;

ErsatzTV.Application/Plex/Commands/SynchronizePlexLibraryById.cs

@@ -4,7 +4,7 @@ using MediatR;
 
 namespace ErsatzTV.Application.Plex.Commands
 {
-    public interface ISynchronizePlexLibraryById : IRequest<Either<BaseError, string>>, IBackgroundServiceRequest
+    public interface ISynchronizePlexLibraryById : IRequest<Either<BaseError, string>>, IPlexBackgroundServiceRequest
     {
         int PlexLibraryId { get; }
         bool ForceScan { get; }

ErsatzTV.Application/Plex/Commands/SynchronizePlexLibraryByIdHandler.cs

@@ -20,6 +20,7 @@ namespace ErsatzTV.Application.Plex.Commands
             IRequestHandler<SynchronizePlexLibraryByIdIfNeeded, Either<BaseError, string>>
     {
         private readonly IEntityLocker _entityLocker;
+        private readonly ILibraryRepository _libraryRepository;
         private readonly ILogger<SynchronizePlexLibraryByIdHandler> _logger;
         private readonly IMediaSourceRepository _mediaSourceRepository;
         private readonly IPlexMovieLibraryScanner _plexMovieLibraryScanner;
@@ -31,6 +32,7 @@ namespace ErsatzTV.Application.Plex.Commands
             IPlexSecretStore plexSecretStore,
             IPlexMovieLibraryScanner plexMovieLibraryScanner,
             IPlexTelevisionLibraryScanner plexTelevisionLibraryScanner,
+            ILibraryRepository libraryRepository,
             IEntityLocker entityLocker,
             ILogger<SynchronizePlexLibraryByIdHandler> logger)
         {
@@ -38,6 +40,7 @@ namespace ErsatzTV.Application.Plex.Commands
             _plexSecretStore = plexSecretStore;
             _plexMovieLibraryScanner = plexMovieLibraryScanner;
             _plexTelevisionLibraryScanner = plexTelevisionLibraryScanner;
+            _libraryRepository = libraryRepository;
             _entityLocker = entityLocker;
             _logger = logger;
         }
@@ -78,7 +81,7 @@ namespace ErsatzTV.Application.Plex.Commands
                 }
 
                 parameters.Library.LastScan = DateTime.UtcNow;
-                await _mediaSourceRepository.Update(parameters.Library);
+                await _libraryRepository.UpdateLastScan(parameters.Library);
             }
             else
             {

ErsatzTV.Application/Plex/Commands/SynchronizePlexMediaSourcesHandler.cs

@@ -10,6 +10,7 @@ using ErsatzTV.Core.Interfaces.Plex;
 using ErsatzTV.Core.Interfaces.Repositories;
 using LanguageExt;
 using MediatR;
+using Microsoft.Extensions.Logging;
 
 namespace ErsatzTV.Application.Plex.Commands
 {
@@ -19,6 +20,7 @@ namespace ErsatzTV.Application.Plex.Commands
     {
         private readonly ChannelWriter<IPlexBackgroundServiceRequest> _channel;
         private readonly IEntityLocker _entityLocker;
+        private readonly ILogger<SynchronizePlexMediaSourcesHandler> _logger;
         private readonly IMediaSourceRepository _mediaSourceRepository;
         private readonly IPlexTvApiClient _plexTvApiClient;
 
@@ -26,12 +28,14 @@ namespace ErsatzTV.Application.Plex.Commands
             IMediaSourceRepository mediaSourceRepository,
             IPlexTvApiClient plexTvApiClient,
             ChannelWriter<IPlexBackgroundServiceRequest> channel,
-            IEntityLocker entityLocker)
+            IEntityLocker entityLocker,
+            ILogger<SynchronizePlexMediaSourcesHandler> logger)
         {
             _mediaSourceRepository = mediaSourceRepository;
             _plexTvApiClient = plexTvApiClient;
             _channel = channel;
             _entityLocker = entityLocker;
+            _logger = logger;
         }
 
         public Task<Either<BaseError, List<PlexMediaSource>>> Handle(
@@ -47,6 +51,14 @@ namespace ErsatzTV.Application.Plex.Commands
                 await SynchronizeServer(allExisting, server);
             }
 
+            // delete removed servers
+            foreach (PlexMediaSource removed in allExisting.Filter(
+                s => servers.All(pms => pms.ClientIdentifier != s.ClientIdentifier)))
+            {
+                _logger.LogWarning("Deleting removed Plex server {ServerName}!", removed.Id.ToString());
+                await _mediaSourceRepository.DeletePlex(removed);
+            }
+
             foreach (PlexMediaSource mediaSource in await _mediaSourceRepository.GetAllPlex())
             {
                 await _channel.WriteAsync(new SynchronizePlexLibraries(mediaSource.Id));
@@ -72,7 +84,7 @@ namespace ErsatzTV.Application.Plex.Commands
                         .Filter(connection => existing.Connections.All(c => c.Uri != connection.Uri)).ToList();
                     var toRemove = existing.Connections
                         .Filter(connection => server.Connections.All(c => c.Uri != connection.Uri)).ToList();
-                    return _mediaSourceRepository.Update(existing, toAdd, toRemove);
+                    return _mediaSourceRepository.Update(existing, server.Connections, toAdd, toRemove);
                 },
                 async () =>
                 {

ErsatzTV.Application/Search/Commands/RebuildSearchIndexHandler.cs

@@ -4,6 +4,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using ErsatzTV.Core;
 using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using LanguageExt;
@@ -14,6 +15,7 @@ namespace ErsatzTV.Application.Search.Commands
     public class RebuildSearchIndexHandler : MediatR.IRequestHandler<RebuildSearchIndex, Unit>
     {
         private readonly IConfigElementRepository _configElementRepository;
+        private readonly ILocalFileSystem _localFileSystem;
         private readonly ILogger<RebuildSearchIndexHandler> _logger;
         private readonly ISearchIndex _searchIndex;
         private readonly ISearchRepository _searchRepository;
@@ -22,18 +24,22 @@ namespace ErsatzTV.Application.Search.Commands
             ISearchIndex searchIndex,
             ISearchRepository searchRepository,
             IConfigElementRepository configElementRepository,
+            ILocalFileSystem localFileSystem,
             ILogger<RebuildSearchIndexHandler> logger)
         {
             _searchIndex = searchIndex;
             _logger = logger;
             _searchRepository = searchRepository;
             _configElementRepository = configElementRepository;
+            _localFileSystem = localFileSystem;
         }
 
         public async Task<Unit> Handle(RebuildSearchIndex request, CancellationToken cancellationToken)
         {
             bool indexFolderExists = Directory.Exists(FileSystemLayout.SearchIndexFolder);
 
+            await _searchIndex.Initialize(_localFileSystem);
+
             if (!indexFolderExists ||
                 await _configElementRepository.GetValue<int>(ConfigElementKey.SearchIndexVersion) <
                 _searchIndex.Version)
@@ -41,7 +47,7 @@ namespace ErsatzTV.Application.Search.Commands
                 _logger.LogDebug("Migrating search index to version {Version}", _searchIndex.Version);
 
                 List<int> itemIds = await _searchRepository.GetItemIdsToIndex();
-                await _searchIndex.Rebuild(itemIds);
+                await _searchIndex.Rebuild(_searchRepository, itemIds);
 
                 Option<ConfigElement> maybeVersion =
                     await _configElementRepository.Get(ConfigElementKey.SearchIndexVersion);

ErsatzTV.Application/Search/Queries/QuerySearchIndex.cs

@@ -1,7 +0,0 @@
-using ErsatzTV.Core.Search;
-using MediatR;
-
-namespace ErsatzTV.Application.Search.Queries
-{
-    public record QuerySearchIndex(string Query) : IRequest<SearchResult>;
-}

ErsatzTV.Application/Search/Queries/QuerySearchIndexAllItems.cs

@@ -0,0 +1,6 @@
+using MediatR;
+
+namespace ErsatzTV.Application.Search.Queries
+{
+    public record QuerySearchIndexAllItems(string Query) : IRequest<SearchResultAllItemsViewModel>;
+}

ErsatzTV.Application/Search/Queries/QuerySearchIndexAllItemsHandler.cs

@@ -0,0 +1,34 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Interfaces.Search;
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.Search.Queries
+{
+    public class
+        QuerySearchIndexAllItemsHandler : IRequestHandler<QuerySearchIndexAllItems, SearchResultAllItemsViewModel>
+    {
+        private readonly ISearchIndex _searchIndex;
+
+        public QuerySearchIndexAllItemsHandler(ISearchIndex searchIndex) => _searchIndex = searchIndex;
+
+        public async Task<SearchResultAllItemsViewModel> Handle(
+            QuerySearchIndexAllItems request,
+            CancellationToken cancellationToken)
+        {
+            List<int> movieIds = await _searchIndex.Search($"type:movie AND ({request.Query})", 0, 0)
+                .Map(result => result.Items.Map(i => i.Id).ToList());
+            List<int> showIds = await _searchIndex.Search($"type:show AND ({request.Query})", 0, 0)
+                .Map(result => result.Items.Map(i => i.Id).ToList());
+            List<int> artistIds = await _searchIndex.Search($"type:artist AND ({request.Query})", 0, 0)
+                .Map(result => result.Items.Map(i => i.Id).ToList());
+            List<int> musicVideoIds = await _searchIndex.Search($"type:music_video AND ({request.Query})", 0, 0)
+                .Map(result => result.Items.Map(i => i.Id).ToList());
+
+            return new SearchResultAllItemsViewModel(movieIds, showIds, artistIds, musicVideoIds);
+        }
+    }
+}

ErsatzTV.Application/Search/Queries/QuerySearchIndexArtists.cs

@@ -0,0 +1,8 @@
+using ErsatzTV.Application.MediaCards;
+using MediatR;
+
+namespace ErsatzTV.Application.Search.Queries
+{
+    public record QuerySearchIndexArtists
+        (string Query, int PageNumber, int PageSize) : IRequest<ArtistCardResultsViewModel>;
+}

ErsatzTV.Application/Search/Queries/QuerySearchIndexArtistsHandler.cs

@@ -0,0 +1,44 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Application.MediaCards;
+using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Interfaces.Search;
+using ErsatzTV.Core.Search;
+using LanguageExt;
+using MediatR;
+using static ErsatzTV.Application.MediaCards.Mapper;
+
+namespace ErsatzTV.Application.Search.Queries
+{
+    public class
+        QuerySearchIndexArtistsHandler : IRequestHandler<QuerySearchIndexArtists, ArtistCardResultsViewModel
+        >
+    {
+        private readonly IArtistRepository _artistRepository;
+        private readonly ISearchIndex _searchIndex;
+
+        public QuerySearchIndexArtistsHandler(ISearchIndex searchIndex, IArtistRepository artistRepository)
+        {
+            _searchIndex = searchIndex;
+            _artistRepository = artistRepository;
+        }
+
+        public async Task<ArtistCardResultsViewModel> Handle(
+            QuerySearchIndexArtists request,
+            CancellationToken cancellationToken)
+        {
+            SearchResult searchResult = await _searchIndex.Search(
+                request.Query,
+                (request.PageNumber - 1) * request.PageSize,
+                request.PageSize);
+
+            List<ArtistCardViewModel> items = await _artistRepository
+                .GetArtistsForCards(searchResult.Items.Map(i => i.Id).ToList())
+                .Map(list => list.Map(ProjectToViewModel).ToList());
+
+            return new ArtistCardResultsViewModel(searchResult.TotalCount, items, searchResult.PageMap);
+        }
+    }
+}

ErsatzTV.Application/Search/Queries/QuerySearchIndexHandler.cs

@@ -1,18 +0,0 @@
-using System.Threading;
-using System.Threading.Tasks;
-using ErsatzTV.Core.Interfaces.Search;
-using ErsatzTV.Core.Search;
-using MediatR;
-
-namespace ErsatzTV.Application.Search.Queries
-{
-    public class QuerySearchIndexHandler : IRequestHandler<QuerySearchIndex, SearchResult>
-    {
-        private readonly ISearchIndex _searchIndex;
-
-        public QuerySearchIndexHandler(ISearchIndex searchIndex) => _searchIndex = searchIndex;
-
-        public Task<SearchResult> Handle(QuerySearchIndex request, CancellationToken cancellationToken) =>
-            _searchIndex.Search(request.Query, 0, 100);
-    }
-}

ErsatzTV.Application/Search/SearchResultAllItemsViewModel.cs

@@ -0,0 +1,6 @@
+using System.Collections.Generic;
+
+namespace ErsatzTV.Application.Search
+{
+    public record SearchResultAllItemsViewModel(List<int> MovieIds, List<int> ShowIds, List<int> ArtistIds, List<int> MusicVideoIds);
+}

ErsatzTV.Core.Tests/Fakes/FakeMediaCollectionRepository.cs

@@ -26,6 +26,11 @@ namespace ErsatzTV.Core.Tests.Fakes
             throw new NotSupportedException();
 
         public Task<List<Collection>> GetAll() => throw new NotSupportedException();
+        public Task<int> CountAllCollections() => throw new NotSupportedException();
+
+        public Task<List<Collection>> GetPagedCollections(int pageNumber, int pageSize) =>
+            throw new NotSupportedException();
+
         public Task<Option<List<MediaItem>>> GetItems(int id) => Some(_data[id].ToList()).AsTask();
         Task<bool> IMediaCollectionRepository.Update(Collection collection) => throw new NotSupportedException();
         public Task Delete(int collectionId) => throw new NotSupportedException();

ErsatzTV.Core.Tests/Metadata/MovieFolderScannerTests.cs

@@ -14,10 +14,12 @@ using ErsatzTV.Core.Metadata;
 using ErsatzTV.Core.Tests.Fakes;
 using FluentAssertions;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
 using Moq;
 using NUnit.Framework;
 using static LanguageExt.Prelude;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Tests.Metadata
 {
@@ -84,7 +86,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsLeft.Should().BeTrue();
                 result.IfLeft(error => error.Should().BeOfType<MediaSourceInaccessible>());
@@ -107,7 +111,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -146,7 +152,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -186,7 +194,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -230,7 +240,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -277,7 +289,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -324,7 +338,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -370,7 +386,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -412,7 +430,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -448,7 +468,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -486,7 +508,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -513,7 +537,9 @@ namespace ErsatzTV.Core.Tests.Metadata
                 Either<BaseError, Unit> result = await service.ScanFolder(
                     libraryPath,
                     FFprobePath,
-                    DateTimeOffset.MinValue);
+                    DateTimeOffset.MinValue,
+                    0,
+                    1);
 
                 result.IsRight.Should().BeTrue();
 
@@ -531,6 +557,8 @@ namespace ErsatzTV.Core.Tests.Metadata
                     new Mock<IMetadataRepository>().Object,
                     _imageCache.Object,
                     new Mock<ISearchIndex>().Object,
+                    new Mock<ISearchRepository>().Object,
+                    new Mock<IMediator>().Object,
                     new Mock<ILogger<MovieFolderScanner>>().Object
                 );
         }

ErsatzTV.Core/Domain/ConfigElementKey.cs

@@ -13,5 +13,6 @@
         public static ConfigElementKey FFmpegSaveReports => new("ffmpeg.save_reports");
         public static ConfigElementKey FFmpegPreferredLanguageCode => new("ffmpeg.preferred_language_code");
         public static ConfigElementKey SearchIndexVersion => new("search_index.version");
+        public static ConfigElementKey HDHRTunerCount => new("hdhr.tuner_count");
     }
 }

ErsatzTV.Core/Domain/Library/LibraryPath.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 
 namespace ErsatzTV.Core.Domain
 {
@@ -6,6 +7,7 @@ namespace ErsatzTV.Core.Domain
     {
         public int Id { get; set; }
         public string Path { get; set; }
+        public DateTime? LastScan { get; set; }
 
         public int LibraryId { get; set; }
         public Library Library { get; set; }

ErsatzTV.Core/Domain/MediaItem/Artist.cs

@@ -0,0 +1,10 @@
+using System.Collections.Generic;
+
+namespace ErsatzTV.Core.Domain
+{
+    public class Artist : MediaItem
+    {
+        public List<MusicVideo> MusicVideos { get; set; }
+        public List<ArtistMetadata> ArtistMetadata { get; set; }
+    }
+}

ErsatzTV.Core/Domain/MediaItem/MusicVideo.cs

@@ -4,6 +4,8 @@ namespace ErsatzTV.Core.Domain
 {
     public class MusicVideo : MediaItem
     {
+        public int ArtistId { get; set; }
+        public Artist Artist { get; set; }
         public List<MusicVideoMetadata> MusicVideoMetadata { get; set; }
         public List<MediaVersion> MediaVersions { get; set; }
     }

ErsatzTV.Core/Domain/Metadata/ArtistMetadata.cs

@@ -0,0 +1,15 @@
+using System.Collections.Generic;
+
+namespace ErsatzTV.Core.Domain
+{
+    public class ArtistMetadata : Metadata
+    {
+        public string Disambiguation { get; set; }
+        public string Biography { get; set; }
+        public string Formed { get; set; }
+        public int ArtistId { get; set; }
+        public Artist Artist { get; set; }
+        public List<Style> Styles { get; set; }
+        public List<Mood> Moods { get; set; }
+    }
+}

ErsatzTV.Core/Domain/Metadata/Mood.cs

@@ -0,0 +1,8 @@
+namespace ErsatzTV.Core.Domain
+{
+    public class Mood
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+}

ErsatzTV.Core/Domain/Metadata/MusicVideoMetadata.cs

@@ -4,7 +4,6 @@
     {
         public string Album { get; set; }
         public string Plot { get; set; }
-        public string Artist { get; set; }
         public int MusicVideoId { get; set; }
         public MusicVideo MusicVideo { get; set; }
     }

ErsatzTV.Core/Domain/Metadata/Style.cs

@@ -0,0 +1,8 @@
+namespace ErsatzTV.Core.Domain
+{
+    public class Style
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+}

ErsatzTV.Core/ErsatzTV.Core.csproj

@@ -11,6 +11,7 @@
         <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       </PackageReference>
       <PackageReference Include="LanguageExt.Core" Version="3.4.15" />
+      <PackageReference Include="MediatR" Version="9.0.0" />
       <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
       <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="5.0.0" />
       <PackageReference Include="Microsoft.VisualStudio.Threading.Analyzers" Version="16.9.60">

ErsatzTV.Core/FFmpeg/FFmpegComplexFilterBuilder.cs

@@ -68,12 +68,12 @@ namespace ErsatzTV.Core.FFmpeg
             return this;
         }
 
-        public Option<FFmpegComplexFilter> Build(int videoStreamIndex, int audioStreamIndex)
+        public Option<FFmpegComplexFilter> Build(int videoStreamIndex, Option<int> audioStreamIndex)
         {
             var complexFilter = new StringBuilder();
 
             var videoLabel = $"0:{videoStreamIndex}";
-            var audioLabel = $"0:{audioStreamIndex}";
+            string audioLabel = audioStreamIndex.Match(index => $"0:{index}", () => "0:a");
 
             HardwareAccelerationKind acceleration = _hardwareAccelerationKind.IfNone(HardwareAccelerationKind.None);
             bool isHardwareDecode = acceleration switch

ErsatzTV.Core/FFmpeg/FFmpegPlaybackSettingsCalculator.cs

@@ -22,6 +22,7 @@ using System;
 using System.Collections.Generic;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.FFmpeg;
+using LanguageExt;
 using static LanguageExt.Prelude;
 
 namespace ErsatzTV.Core.FFmpeg
@@ -46,7 +47,7 @@ namespace ErsatzTV.Core.FFmpeg
             FFmpegProfile ffmpegProfile,
             MediaVersion version,
             MediaStream videoStream,
-            MediaStream audioStream,
+            Option<MediaStream> audioStream,
             DateTimeOffset start,
             DateTimeOffset now)
         {
@@ -113,10 +114,14 @@ namespace ErsatzTV.Core.FFmpeg
                         result.AudioBitrate = ffmpegProfile.AudioBitrate;
                         result.AudioBufferSize = ffmpegProfile.AudioBufferSize;
 
-                        if (audioStream.Channels != ffmpegProfile.AudioChannels)
-                        {
-                            result.AudioChannels = ffmpegProfile.AudioChannels;
-                        }
+                        audioStream.IfSome(
+                            stream =>
+                            {
+                                if (stream.Channels != ffmpegProfile.AudioChannels)
+                                {
+                                    result.AudioChannels = ffmpegProfile.AudioChannels;
+                                }
+                            });
 
                         result.AudioSampleRate = ffmpegProfile.AudioSampleRate;
                         result.AudioDuration = version.Duration;

ErsatzTV.Core/FFmpeg/FFmpegProcessBuilder.cs

@@ -199,6 +199,7 @@ namespace ErsatzTV.Core.FFmpeg
                 "-c", "copy",
                 "-muxdelay", "0",
                 "-muxpreload", "0"
+                // "-avoid_negative_ts", "make_zero"
             };
             _arguments.AddRange(arguments);
             return this;
@@ -353,12 +354,15 @@ namespace ErsatzTV.Core.FFmpeg
             return this;
         }
 
-        public FFmpegProcessBuilder WithFilterComplex(int videoStreamIndex, int audioStreamIndex)
+        public FFmpegProcessBuilder WithFilterComplex(MediaStream videoStream, Option<MediaStream> maybeAudioStream)
         {
-            var videoLabel = $"0:{videoStreamIndex}";
-            var audioLabel = $"0:{audioStreamIndex}";
+            int videoStreamIndex = videoStream.Index;
+            Option<int> maybeIndex = maybeAudioStream.Map(ms => ms.Index);
 
-            Option<FFmpegComplexFilter> maybeFilter = _complexFilterBuilder.Build(videoStreamIndex, audioStreamIndex);
+            var videoLabel = $"0:{videoStreamIndex}";
+            var audioLabel = $"0:{maybeIndex.Match(i => i.ToString(), () => "a")}";
+
+            Option<FFmpegComplexFilter> maybeFilter = _complexFilterBuilder.Build(videoStreamIndex, maybeIndex);
             maybeFilter.IfSome(
                 filter =>
                 {

ErsatzTV.Core/FFmpeg/FFmpegProcessService.cs

@@ -30,14 +30,14 @@ namespace ErsatzTV.Core.FFmpeg
             DateTimeOffset now)
         {
             MediaStream videoStream = await _ffmpegStreamSelector.SelectVideoStream(channel, version);
-            MediaStream audioStream = await _ffmpegStreamSelector.SelectAudioStream(channel, version);
+            Option<MediaStream> maybeAudioStream = await _ffmpegStreamSelector.SelectAudioStream(channel, version);
 
             FFmpegPlaybackSettings playbackSettings = _playbackSettingsCalculator.CalculateSettings(
                 channel.StreamingMode,
                 channel.FFmpegProfile,
                 version,
                 videoStream,
-                audioStream,
+                maybeAudioStream,
                 start,
                 now);
 
@@ -67,7 +67,7 @@ namespace ErsatzTV.Core.FFmpeg
                     }
 
                     builder = builder
-                        .WithFilterComplex(videoStream.Index, audioStream.Index);
+                        .WithFilterComplex(videoStream, maybeAudioStream);
                 },
                 () =>
                 {
@@ -76,18 +76,18 @@ namespace ErsatzTV.Core.FFmpeg
                         builder = builder
                             .WithDeinterlace(playbackSettings.Deinterlace)
                             .WithBlackBars(channel.FFmpegProfile.Resolution)
-                            .WithFilterComplex(videoStream.Index, audioStream.Index);
+                            .WithFilterComplex(videoStream, maybeAudioStream);
                     }
                     else if (playbackSettings.Deinterlace)
                     {
                         builder = builder.WithDeinterlace(playbackSettings.Deinterlace)
                             .WithAlignedAudio(playbackSettings.AudioDuration)
-                            .WithFilterComplex(videoStream.Index, audioStream.Index);
+                            .WithFilterComplex(videoStream, maybeAudioStream);
                     }
                     else
                     {
                         builder = builder
-                            .WithFilterComplex(videoStream.Index, audioStream.Index);
+                            .WithFilterComplex(videoStream, maybeAudioStream);
                     }
                 });
 

ErsatzTV.Core/FFmpeg/FFmpegStreamSelector.cs

@@ -6,6 +6,7 @@ using ErsatzTV.Core.Interfaces.FFmpeg;
 using ErsatzTV.Core.Interfaces.Repositories;
 using LanguageExt;
 using Microsoft.Extensions.Logging;
+using static LanguageExt.Prelude;
 
 namespace ErsatzTV.Core.FFmpeg
 {
@@ -25,8 +26,17 @@ namespace ErsatzTV.Core.FFmpeg
         public Task<MediaStream> SelectVideoStream(Channel channel, MediaVersion version) =>
             version.Streams.First(s => s.MediaStreamKind == MediaStreamKind.Video).AsTask();
 
-        public async Task<MediaStream> SelectAudioStream(Channel channel, MediaVersion version)
+        public async Task<Option<MediaStream>> SelectAudioStream(Channel channel, MediaVersion version)
         {
+            if (channel.StreamingMode == StreamingMode.HttpLiveStreaming &&
+                string.IsNullOrWhiteSpace(channel.PreferredLanguageCode))
+            {
+                _logger.LogDebug(
+                    "Channel {Number} is HLS with no preferred language; using all audio streams",
+                    channel.Number);
+                return None;
+            }
+
             var audioStreams = version.Streams.Filter(s => s.MediaStreamKind == MediaStreamKind.Audio).ToList();
 
             string language = (channel.PreferredLanguageCode ?? string.Empty).ToLowerInvariant();

ErsatzTV.Core/Interfaces/FFmpeg/IFFmpegStreamSelector.cs

@@ -1,11 +1,12 @@
 using System.Threading.Tasks;
 using ErsatzTV.Core.Domain;
+using LanguageExt;
 
 namespace ErsatzTV.Core.Interfaces.FFmpeg
 {
     public interface IFFmpegStreamSelector
     {
         Task<MediaStream> SelectVideoStream(Channel channel, MediaVersion version);
-        Task<MediaStream> SelectAudioStream(Channel channel, MediaVersion version);
+        Task<Option<MediaStream>> SelectAudioStream(Channel channel, MediaVersion version);
     }
 }

ErsatzTV.Core/Interfaces/Metadata/IFallbackMetadataProvider.cs

@@ -1,13 +1,16 @@
 using System;
 using ErsatzTV.Core.Domain;
+using LanguageExt;
 
 namespace ErsatzTV.Core.Interfaces.Metadata
 {
     public interface IFallbackMetadataProvider
     {
         ShowMetadata GetFallbackMetadataForShow(string showFolder);
+        ArtistMetadata GetFallbackMetadataForArtist(string artistFolder);
         Tuple<EpisodeMetadata, int> GetFallbackMetadata(Episode episode);
         MovieMetadata GetFallbackMetadata(Movie movie);
+        Option<MusicVideoMetadata> GetFallbackMetadata(MusicVideo musicVideo);
         string GetSortTitle(string title);
     }
 }

ErsatzTV.Core/Interfaces/Metadata/ILocalMetadataProvider.cs

@@ -1,19 +1,21 @@
 using System.Threading.Tasks;
 using ErsatzTV.Core.Domain;
-using LanguageExt;
 
 namespace ErsatzTV.Core.Interfaces.Metadata
 {
     public interface ILocalMetadataProvider
     {
         Task<ShowMetadata> GetMetadataForShow(string showFolder);
-        Task<Option<MusicVideoMetadata>> GetMetadataForMusicVideo(string filePath);
+        Task<ArtistMetadata> GetMetadataForArtist(string artistFolder);
         Task<bool> RefreshSidecarMetadata(Movie movie, string nfoFileName);
         Task<bool> RefreshSidecarMetadata(Show televisionShow, string nfoFileName);
         Task<bool> RefreshSidecarMetadata(Episode episode, string nfoFileName);
+        Task<bool> RefreshSidecarMetadata(Artist artist, string nfoFileName);
         Task<bool> RefreshSidecarMetadata(MusicVideo musicVideo, string nfoFileName);
         Task<bool> RefreshFallbackMetadata(Movie movie);
         Task<bool> RefreshFallbackMetadata(Episode episode);
+        Task<bool> RefreshFallbackMetadata(Artist artist, string artistFolder);
+        Task<bool> RefreshFallbackMetadata(MusicVideo musicVideo);
         Task<bool> RefreshFallbackMetadata(Show televisionShow, string showFolder);
     }
 }

ErsatzTV.Core/Interfaces/Metadata/IMovieFolderScanner.cs

@@ -7,6 +7,11 @@ namespace ErsatzTV.Core.Interfaces.Metadata
 {
     public interface IMovieFolderScanner
     {
-        Task<Either<BaseError, Unit>> ScanFolder(LibraryPath libraryPath, string ffprobePath, DateTimeOffset lastScan);
+        Task<Either<BaseError, Unit>> ScanFolder(
+            LibraryPath libraryPath,
+            string ffprobePath,
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax);
     }
 }

ErsatzTV.Core/Interfaces/Metadata/IMusicVideoFolderScanner.cs

@@ -7,6 +7,11 @@ namespace ErsatzTV.Core.Interfaces.Metadata
 {
     public interface IMusicVideoFolderScanner
     {
-        Task<Either<BaseError, Unit>> ScanFolder(LibraryPath libraryPath, string ffprobePath, DateTimeOffset lastScan);
+        Task<Either<BaseError, Unit>> ScanFolder(
+            LibraryPath libraryPath,
+            string ffprobePath,
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax);
     }
 }

ErsatzTV.Core/Interfaces/Metadata/ITelevisionFolderScanner.cs

@@ -7,6 +7,11 @@ namespace ErsatzTV.Core.Interfaces.Metadata
 {
     public interface ITelevisionFolderScanner
     {
-        Task<Either<BaseError, Unit>> ScanFolder(LibraryPath libraryPath, string ffprobePath, DateTimeOffset lastScan);
+        Task<Either<BaseError, Unit>> ScanFolder(
+            LibraryPath libraryPath,
+            string ffprobePath,
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax);
     }
 }

ErsatzTV.Core/Interfaces/Repositories/IArtistRepository.cs

@@ -0,0 +1,25 @@
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Metadata;
+using LanguageExt;
+
+namespace ErsatzTV.Core.Interfaces.Repositories
+{
+    public interface IArtistRepository
+    {
+        Task<Option<Artist>> GetArtistByMetadata(int libraryPathId, ArtistMetadata metadata);
+
+        Task<Either<BaseError, MediaItemScanResult<Artist>>> AddArtist(
+            int libraryPathId,
+            string artistFolder,
+            ArtistMetadata metadata);
+
+        Task<List<int>> DeleteEmptyArtists(LibraryPath libraryPath);
+        Task<Option<Artist>> GetArtist(int artistId);
+        Task<List<ArtistMetadata>> GetArtistsForCards(List<int> ids);
+        Task<bool> AddGenre(ArtistMetadata metadata, Genre genre);
+        Task<bool> AddStyle(ArtistMetadata metadata, Style style);
+        Task<bool> AddMood(ArtistMetadata metadata, Mood mood);
+    }
+}

ErsatzTV.Core/Interfaces/Repositories/ILibraryRepository.cs

@@ -12,6 +12,7 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<Option<LocalLibrary>> GetLocal(int libraryId);
         Task<List<Library>> GetAll();
         Task<Unit> UpdateLastScan(Library library);
+        Task<Unit> UpdateLastScan(LibraryPath libraryPath);
         Task<List<LibraryPath>> GetLocalPaths(int libraryId);
         Task<Option<LibraryPath>> GetPath(int libraryPathId);
         Task<int> CountMediaItemsByPath(int libraryPathId);

ErsatzTV.Core/Interfaces/Repositories/IMediaCollectionRepository.cs

@@ -15,6 +15,8 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<Option<Collection>> GetCollectionWithItemsUntracked(int id);
         Task<Option<Collection>> GetCollectionWithCollectionItemsUntracked(int id);
         Task<List<Collection>> GetAll();
+        Task<int> CountAllCollections();
+        Task<List<Collection>> GetPagedCollections(int pageNumber, int pageSize);
         Task<Option<List<MediaItem>>> GetItems(int id);
         Task<bool> Update(Collection collection);
         Task Delete(int collectionId);

ErsatzTV.Core/Interfaces/Repositories/IMediaItemRepository.cs

@@ -10,5 +10,6 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<Option<MediaItem>> Get(int id);
         Task<List<MediaItem>> GetAll();
         Task<bool> Update(MediaItem mediaItem);
+        Task<List<string>> GetAllLanguageCodes();
     }
 }

ErsatzTV.Core/Interfaces/Repositories/IMediaSourceRepository.cs

@@ -20,7 +20,12 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<List<PlexPathReplacement>> GetPlexPathReplacementsByLibraryId(int plexLibraryPathId);
         Task<int> CountMediaItems(int id);
         Task Update(LocalMediaSource localMediaSource);
-        Task Update(PlexMediaSource plexMediaSource, List<PlexConnection> toAdd, List<PlexConnection> toDelete);
+
+        Task Update(
+            PlexMediaSource plexMediaSource,
+            List<PlexConnection> prioritizedConnections,
+            List<PlexConnection> toAdd,
+            List<PlexConnection> toDelete);
 
         Task<Unit> UpdateLibraries(
             int plexMediaSourceId,
@@ -36,6 +41,7 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task Update(PlexLibrary plexMediaSourceLibrary);
         Task Delete(int mediaSourceId);
         Task<List<int>> DeleteAllPlex();
+        Task<List<int>> DeletePlex(PlexMediaSource plexMediaSource);
         Task<List<int>> DisablePlexLibrarySync(List<int> libraryIds);
         Task EnablePlexLibrarySync(IEnumerable<int> libraryIds);
     }

ErsatzTV.Core/Interfaces/Repositories/IMetadataRepository.cs

@@ -10,6 +10,8 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<bool> RemoveGenre(Genre genre);
         Task<bool> RemoveTag(Tag tag);
         Task<bool> RemoveStudio(Studio studio);
+        Task<bool> RemoveStyle(Style style);
+        Task<bool> RemoveMood(Mood mood);
         Task<bool> Update(Domain.Metadata metadata);
         Task<bool> Add(Domain.Metadata metadata);
         Task<bool> UpdateLocalStatistics(int mediaVersionId, MediaVersion incoming, bool updateVersion = true);

ErsatzTV.Core/Interfaces/Repositories/IMusicVideoRepository.cs

@@ -8,12 +8,10 @@ namespace ErsatzTV.Core.Interfaces.Repositories
 {
     public interface IMusicVideoRepository
     {
-        Task<Option<MusicVideo>> GetByMetadata(LibraryPath libraryPath, MusicVideoMetadata metadata);
-
-        Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> Add(
+        Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> GetOrAdd(
+            Artist artist,
             LibraryPath libraryPath,
-            string filePath,
-            MusicVideoMetadata metadata);
+            string path);
 
         Task<IEnumerable<string>> FindMusicVideoPaths(LibraryPath libraryPath);
         Task<List<int>> DeleteByPath(LibraryPath libraryPath, string path);
@@ -22,5 +20,8 @@ namespace ErsatzTV.Core.Interfaces.Repositories
         Task<bool> AddStudio(MusicVideoMetadata metadata, Studio studio);
         Task<List<MusicVideoMetadata>> GetMusicVideosForCards(List<int> ids);
         Task<Option<MusicVideo>> GetMusicVideo(int musicVideoId);
+        Task<IEnumerable<string>> FindOrphanPaths(LibraryPath libraryPath);
+        Task<int> GetMusicVideoCount(int artistId);
+        Task<List<MusicVideoMetadata>> GetPagedMusicVideos(int artistId, int pageNumber, int pageSize);
     }
 }

ErsatzTV.Core/Interfaces/Repositories/ISearchRepository.cs

@@ -9,8 +9,7 @@ namespace ErsatzTV.Core.Interfaces.Repositories
     {
         public Task<List<int>> GetItemIdsToIndex();
         public Task<Option<MediaItem>> GetItemToIndex(int id);
-        public Task<List<MediaItem>> SearchMediaItemsByTitle(string query);
-        public Task<List<MediaItem>> SearchMediaItemsByGenre(string genre);
-        public Task<List<MediaItem>> SearchMediaItemsByTag(string tag);
+        public Task<List<string>> GetLanguagesForShow(Show show);
+        public Task<List<string>> GetLanguagesForArtist(Artist artist);
     }
 }

ErsatzTV.Core/Interfaces/Search/ISearchIndex.cs

@@ -1,19 +1,23 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Threading.Tasks;
 using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Metadata;
+using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Search;
 using LanguageExt;
 
 namespace ErsatzTV.Core.Interfaces.Search
 {
-    public interface ISearchIndex
+    public interface ISearchIndex : IDisposable
     {
         public int Version { get; }
-        Task<bool> Initialize();
-        Task<Unit> Rebuild(List<int> itemIds);
-        Task<Unit> AddItems(List<MediaItem> items);
-        Task<Unit> UpdateItems(List<MediaItem> items);
+        Task<bool> Initialize(ILocalFileSystem localFileSystem);
+        Task<Unit> Rebuild(ISearchRepository searchRepository, List<int> itemIds);
+        Task<Unit> AddItems(ISearchRepository searchRepository, List<MediaItem> items);
+        Task<Unit> UpdateItems(ISearchRepository searchRepository, List<MediaItem> items);
         Task<Unit> RemoveItems(List<int> ids);
         Task<SearchResult> Search(string query, int skip, int limit, string searchField = "");
+        void Commit();
     }
 }

ErsatzTV.Core/Iptv/ChannelGuide.cs

@@ -221,8 +221,8 @@ namespace ErsatzTV.Core.Iptv
                     .IfNone("[unknown movie]"),
                 Episode e => e.Season.Show.ShowMetadata.HeadOrNone().Map(em => em.Title ?? string.Empty)
                     .IfNone("[unknown show]"),
-                MusicVideo mv => mv.MusicVideoMetadata.HeadOrNone().Map(mvm => $"{mvm.Artist} - {mvm.Title}")
-                    .IfNone("[unknown music video]"),
+                MusicVideo mv => mv.Artist.ArtistMetadata.HeadOrNone().Map(am => am.Title ?? string.Empty)
+                    .IfNone("[unknown artist]"),
                 _ => "[unknown]"
             };
         }

ErsatzTV.Core/Metadata/FallbackMetadataProvider.cs

@@ -4,6 +4,7 @@ using System.IO;
 using System.Text.RegularExpressions;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Metadata;
+using LanguageExt;
 using static LanguageExt.Prelude;
 
 namespace ErsatzTV.Core.Metadata
@@ -18,6 +19,13 @@ namespace ErsatzTV.Core.Metadata
             return GetTelevisionShowMetadata(fileName, metadata);
         }
 
+        public ArtistMetadata GetFallbackMetadataForArtist(string artistFolder)
+        {
+            string fileName = Path.GetFileName(artistFolder);
+            return new ArtistMetadata
+                { MetadataKind = MetadataKind.Fallback, Title = fileName ?? artistFolder };
+        }
+
         public Tuple<EpisodeMetadata, int> GetFallbackMetadata(Episode episode)
         {
             string path = episode.MediaVersions.Head().MediaFiles.Head().Path;
@@ -36,6 +44,19 @@ namespace ErsatzTV.Core.Metadata
             return fileName != null ? GetMovieMetadata(fileName, metadata) : metadata;
         }
 
+        public Option<MusicVideoMetadata> GetFallbackMetadata(MusicVideo musicVideo)
+        {
+            string path = musicVideo.MediaVersions.Head().MediaFiles.Head().Path;
+            string fileName = Path.GetFileName(path);
+            var metadata = new MusicVideoMetadata
+            {
+                MetadataKind = MetadataKind.Fallback,
+                Title = fileName ?? path
+            };
+
+            return GetMusicVideoMetadata(fileName, metadata);
+        }
+
         public string GetSortTitle(string title)
         {
             if (string.IsNullOrWhiteSpace(title))
@@ -112,6 +133,28 @@ namespace ErsatzTV.Core.Metadata
             return metadata;
         }
 
+        private Option<MusicVideoMetadata> GetMusicVideoMetadata(string fileName, MusicVideoMetadata metadata)
+        {
+            try
+            {
+                const string PATTERN = @"^(.*?) - (.*?).\w+$";
+                Match match = Regex.Match(fileName, PATTERN);
+                metadata.Title = match.Success
+                    ? match.Groups[2].Value.Trim()
+                    : Path.GetFileNameWithoutExtension(fileName);
+                metadata.Genres = new List<Genre>();
+                metadata.Tags = new List<Tag>();
+                metadata.Studios = new List<Studio>();
+                metadata.DateUpdated = DateTime.UtcNow;
+
+                return metadata;
+            }
+            catch (Exception)
+            {
+                return None;
+            }
+        }
+
         private ShowMetadata GetTelevisionShowMetadata(string fileName, ShowMetadata metadata)
         {
             try

ErsatzTV.Core/Metadata/LibraryScanProgress.cs

@@ -0,0 +1,6 @@
+using MediatR;
+
+namespace ErsatzTV.Core.Metadata
+{
+    public record LibraryScanProgress(int LibraryId, decimal Progress) : INotification;
+}

ErsatzTV.Core/Metadata/LocalFolderScanner.cs

@@ -166,5 +166,9 @@ namespace ErsatzTV.Core.Metadata
 
             return false;
         }
+
+        protected bool ShouldIncludeFolder(string folder) =>
+            !Path.GetFileName(folder).StartsWith('.') &&
+            !_localFileSystem.FileExists(Path.Combine(folder, ".etvignore"));
     }
 }

ErsatzTV.Core/Metadata/LocalMetadataProvider.cs

@@ -19,7 +19,9 @@ namespace ErsatzTV.Core.Metadata
         private static readonly XmlSerializer MovieSerializer = new(typeof(MovieNfo));
         private static readonly XmlSerializer EpisodeSerializer = new(typeof(TvShowEpisodeNfo));
         private static readonly XmlSerializer TvShowSerializer = new(typeof(TvShowNfo));
+        private static readonly XmlSerializer ArtistSerializer = new(typeof(ArtistNfo));
         private static readonly XmlSerializer MusicVideoSerializer = new(typeof(MusicVideoNfo));
+        private readonly IArtistRepository _artistRepository;
         private readonly IFallbackMetadataProvider _fallbackMetadataProvider;
         private readonly ILocalFileSystem _localFileSystem;
         private readonly ILogger<LocalMetadataProvider> _logger;
@@ -33,6 +35,7 @@ namespace ErsatzTV.Core.Metadata
             IMetadataRepository metadataRepository,
             IMovieRepository movieRepository,
             ITelevisionRepository televisionRepository,
+            IArtistRepository artistRepository,
             IMusicVideoRepository musicVideoRepository,
             IFallbackMetadataProvider fallbackMetadataProvider,
             ILocalFileSystem localFileSystem,
@@ -41,6 +44,7 @@ namespace ErsatzTV.Core.Metadata
             _metadataRepository = metadataRepository;
             _movieRepository = movieRepository;
             _televisionRepository = televisionRepository;
+            _artistRepository = artistRepository;
             _musicVideoRepository = musicVideoRepository;
             _fallbackMetadataProvider = fallbackMetadataProvider;
             _localFileSystem = localFileSystem;
@@ -70,20 +74,26 @@ namespace ErsatzTV.Core.Metadata
                 });
         }
 
-        public async Task<Option<MusicVideoMetadata>> GetMetadataForMusicVideo(string filePath)
+        public async Task<ArtistMetadata> GetMetadataForArtist(string artistFolder)
         {
-            string nfoFileName = Path.ChangeExtension(filePath, "nfo");
-            Option<MusicVideoMetadata> maybeMetadata = None;
+            string nfoFileName = Path.Combine(artistFolder, "artist.nfo");
+            Option<ArtistMetadata> maybeMetadata = None;
             if (_localFileSystem.FileExists(nfoFileName))
             {
-                maybeMetadata = await LoadMusicVideoMetadata(nfoFileName);
+                maybeMetadata = await LoadArtistMetadata(nfoFileName);
             }
 
-            return maybeMetadata.Map(
+            return maybeMetadata.Match(
                 metadata =>
                 {
                     metadata.SortTitle = _fallbackMetadataProvider.GetSortTitle(metadata.Title);
                     return metadata;
+                },
+                () =>
+                {
+                    ArtistMetadata metadata = _fallbackMetadataProvider.GetFallbackMetadataForArtist(artistFolder);
+                    metadata.SortTitle = _fallbackMetadataProvider.GetSortTitle(metadata.Title);
+                    return metadata;
                 });
         }
 
@@ -105,11 +115,17 @@ namespace ErsatzTV.Core.Metadata
                     metadata => ApplyMetadataUpdate(episode, metadata),
                     () => Task.FromResult(false)));
 
+        public Task<bool> RefreshSidecarMetadata(Artist artist, string nfoFileName) =>
+            LoadArtistMetadata(nfoFileName).Bind(
+                maybeMetadata => maybeMetadata.Match(
+                    metadata => ApplyMetadataUpdate(artist, metadata),
+                    () => Task.FromResult(false)));
+
         public Task<bool> RefreshSidecarMetadata(MusicVideo musicVideo, string nfoFileName) =>
             LoadMusicVideoMetadata(nfoFileName).Bind(
                 maybeMetadata => maybeMetadata.Match(
                     metadata => ApplyMetadataUpdate(musicVideo, metadata),
-                    () => Task.FromResult(false)));
+                    () => RefreshFallbackMetadata(musicVideo)));
 
         public Task<bool> RefreshFallbackMetadata(Movie movie) =>
             ApplyMetadataUpdate(movie, _fallbackMetadataProvider.GetFallbackMetadata(movie));
@@ -117,6 +133,14 @@ namespace ErsatzTV.Core.Metadata
         public Task<bool> RefreshFallbackMetadata(Episode episode) =>
             ApplyMetadataUpdate(episode, _fallbackMetadataProvider.GetFallbackMetadata(episode));
 
+        public Task<bool> RefreshFallbackMetadata(Artist artist, string artistFolder) =>
+            ApplyMetadataUpdate(artist, _fallbackMetadataProvider.GetFallbackMetadataForArtist(artistFolder));
+
+        public Task<bool> RefreshFallbackMetadata(MusicVideo musicVideo) =>
+            _fallbackMetadataProvider.GetFallbackMetadata(musicVideo).Match(
+                metadata => ApplyMetadataUpdate(musicVideo, metadata),
+                () => Task.FromResult(false));
+
         public Task<bool> RefreshFallbackMetadata(Show televisionShow, string showFolder) =>
             ApplyMetadataUpdate(televisionShow, _fallbackMetadataProvider.GetFallbackMetadataForShow(showFolder));
 
@@ -132,7 +156,6 @@ namespace ErsatzTV.Core.Metadata
                         MetadataKind = MetadataKind.Sidecar,
                         DateAdded = DateTime.UtcNow,
                         DateUpdated = File.GetLastWriteTimeUtc(nfoFileName),
-                        Artist = nfo.Artist,
                         Album = nfo.Album,
                         Title = nfo.Title,
                         Plot = nfo.Plot,
@@ -283,11 +306,104 @@ namespace ErsatzTV.Core.Metadata
                     return await _metadataRepository.Add(metadata);
                 });
 
+        private Task<bool> ApplyMetadataUpdate(Artist artist, ArtistMetadata metadata) =>
+            Optional(artist.ArtistMetadata).Flatten().HeadOrNone().Match(
+                async existing =>
+                {
+                    existing.Title = metadata.Title;
+                    existing.Disambiguation = metadata.Disambiguation;
+                    existing.Biography = metadata.Biography;
+
+                    if (existing.DateAdded == DateTime.MinValue)
+                    {
+                        existing.DateAdded = metadata.DateAdded;
+                    }
+
+                    existing.DateUpdated = metadata.DateUpdated;
+                    existing.MetadataKind = metadata.MetadataKind;
+                    existing.SortTitle = string.IsNullOrWhiteSpace(metadata.SortTitle)
+                        ? _fallbackMetadataProvider.GetSortTitle(metadata.Title)
+                        : metadata.SortTitle;
+
+                    var updated = false;
+
+                    foreach (Genre genre in existing.Genres.Filter(g => metadata.Genres.All(g2 => g2.Name != g.Name))
+                        .ToList())
+                    {
+                        existing.Genres.Remove(genre);
+                        if (await _metadataRepository.RemoveGenre(genre))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    foreach (Genre genre in metadata.Genres.Filter(g => existing.Genres.All(g2 => g2.Name != g.Name))
+                        .ToList())
+                    {
+                        existing.Genres.Add(genre);
+                        if (await _artistRepository.AddGenre(existing, genre))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    foreach (Style style in existing.Styles.Filter(s => metadata.Styles.All(s2 => s2.Name != s.Name))
+                        .ToList())
+                    {
+                        existing.Styles.Remove(style);
+                        if (await _metadataRepository.RemoveStyle(style))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    foreach (Style style in metadata.Styles.Filter(s => existing.Styles.All(s2 => s2.Name != s.Name))
+                        .ToList())
+                    {
+                        existing.Styles.Add(style);
+                        if (await _artistRepository.AddStyle(existing, style))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    foreach (Mood mood in existing.Moods.Filter(m => metadata.Moods.All(m2 => m2.Name != m.Name))
+                        .ToList())
+                    {
+                        existing.Moods.Remove(mood);
+                        if (await _metadataRepository.RemoveMood(mood))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    foreach (Mood mood in metadata.Moods.Filter(s => existing.Moods.All(m2 => m2.Name != s.Name))
+                        .ToList())
+                    {
+                        existing.Moods.Add(mood);
+                        if (await _artistRepository.AddMood(existing, mood))
+                        {
+                            updated = true;
+                        }
+                    }
+
+                    return await _metadataRepository.Update(existing) || updated;
+                },
+                async () =>
+                {
+                    metadata.SortTitle = string.IsNullOrWhiteSpace(metadata.SortTitle)
+                        ? _fallbackMetadataProvider.GetSortTitle(metadata.Title)
+                        : metadata.SortTitle;
+                    metadata.ArtistId = artist.Id;
+                    artist.ArtistMetadata = new List<ArtistMetadata> { metadata };
+
+                    return await _metadataRepository.Add(metadata);
+                });
+
         private Task<bool> ApplyMetadataUpdate(MusicVideo musicVideo, MusicVideoMetadata metadata) =>
             Optional(musicVideo.MusicVideoMetadata).Flatten().HeadOrNone().Match(
                 async existing =>
                 {
-                    existing.Artist = metadata.Artist;
                     existing.Title = metadata.Title;
                     existing.Year = metadata.Year;
                     existing.Plot = metadata.Plot;
@@ -357,6 +473,34 @@ namespace ErsatzTV.Core.Metadata
             }
         }
 
+        private async Task<Option<ArtistMetadata>> LoadArtistMetadata(string nfoFileName)
+        {
+            try
+            {
+                await using FileStream fileStream = File.Open(nfoFileName, FileMode.Open, FileAccess.Read);
+                Option<ArtistNfo> maybeNfo = ArtistSerializer.Deserialize(fileStream) as ArtistNfo;
+                return maybeNfo.Match<Option<ArtistMetadata>>(
+                    nfo => new ArtistMetadata
+                    {
+                        MetadataKind = MetadataKind.Sidecar,
+                        DateAdded = DateTime.UtcNow,
+                        DateUpdated = File.GetLastWriteTimeUtc(nfoFileName),
+                        Title = nfo.Name,
+                        Disambiguation = nfo.Disambiguation,
+                        Biography = nfo.Biography,
+                        Genres = nfo.Genres.Map(g => new Genre { Name = g }).ToList(),
+                        Styles = nfo.Styles.Map(s => new Style { Name = s }).ToList(),
+                        Moods = nfo.Moods.Map(m => new Mood { Name = m }).ToList()
+                    },
+                    None);
+            }
+            catch (Exception ex)
+            {
+                _logger.LogInformation(ex, "Failed to read artist nfo metadata from {Path}", nfoFileName);
+                return None;
+            }
+        }
+
         private async Task<Option<Tuple<EpisodeMetadata, int>>> LoadEpisodeMetadata(Episode episode, string nfoFileName)
         {
             try

ErsatzTV.Core/Metadata/LocalStatisticsProvider.cs

@@ -164,7 +164,9 @@ namespace ErsatzTV.Core.Metadata
                         FFprobeStream videoStream = json.streams.FirstOrDefault(s => s.codec_type == "video");
                         if (videoStream != null)
                         {
-                            version.SampleAspectRatio = videoStream.sample_aspect_ratio;
+                            version.SampleAspectRatio = string.IsNullOrWhiteSpace(videoStream.sample_aspect_ratio)
+                                ? "1:1"
+                                : videoStream.sample_aspect_ratio;
                             version.DisplayAspectRatio = videoStream.display_aspect_ratio;
                             version.Width = videoStream.width;
                             version.Height = videoStream.height;

ErsatzTV.Core/Metadata/MovieFolderScanner.cs

@@ -10,9 +10,11 @@ using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
 using static LanguageExt.Prelude;
 using Seq = LanguageExt.Seq;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Metadata
 {
@@ -21,8 +23,10 @@ namespace ErsatzTV.Core.Metadata
         private readonly ILocalFileSystem _localFileSystem;
         private readonly ILocalMetadataProvider _localMetadataProvider;
         private readonly ILogger<MovieFolderScanner> _logger;
+        private readonly IMediator _mediator;
         private readonly IMovieRepository _movieRepository;
         private readonly ISearchIndex _searchIndex;
+        private readonly ISearchRepository _searchRepository;
 
         public MovieFolderScanner(
             ILocalFileSystem localFileSystem,
@@ -32,6 +36,8 @@ namespace ErsatzTV.Core.Metadata
             IMetadataRepository metadataRepository,
             IImageCache imageCache,
             ISearchIndex searchIndex,
+            ISearchRepository searchRepository,
+            IMediator mediator,
             ILogger<MovieFolderScanner> logger)
             : base(localFileSystem, localStatisticsProvider, metadataRepository, imageCache, logger)
         {
@@ -39,19 +45,27 @@ namespace ErsatzTV.Core.Metadata
             _movieRepository = movieRepository;
             _localMetadataProvider = localMetadataProvider;
             _searchIndex = searchIndex;
+            _searchRepository = searchRepository;
+            _mediator = mediator;
             _logger = logger;
         }
 
         public async Task<Either<BaseError, Unit>> ScanFolder(
             LibraryPath libraryPath,
             string ffprobePath,
-            DateTimeOffset lastScan)
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax)
         {
+            decimal progressSpread = progressMax - progressMin;
+
             if (!_localFileSystem.IsLibraryPathAccessible(libraryPath))
             {
                 return new MediaSourceInaccessible();
             }
 
+            var foldersCompleted = 0;
+
             var folderQueue = new Queue<string>();
             foreach (string folder in _localFileSystem.ListSubdirectories(libraryPath.Path).OrderBy(identity))
             {
@@ -60,7 +74,12 @@ namespace ErsatzTV.Core.Metadata
 
             while (folderQueue.Count > 0)
             {
+                decimal percentCompletion = (decimal) foldersCompleted / (foldersCompleted + folderQueue.Count);
+                await _mediator.Publish(
+                    new LibraryScanProgress(libraryPath.LibraryId, progressMin + percentCompletion * progressSpread));
+
                 string movieFolder = folderQueue.Dequeue();
+                foldersCompleted++;
 
                 var allFiles = _localFileSystem.ListFiles(movieFolder)
                     .Filter(f => VideoFileExtensions.Contains(Path.GetExtension(f)))
@@ -99,11 +118,11 @@ namespace ErsatzTV.Core.Metadata
                         {
                             if (result.IsAdded)
                             {
-                                await _searchIndex.AddItems(new List<MediaItem> { result.Item });
+                                await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
                             }
                             else if (result.IsUpdated)
                             {
-                                await _searchIndex.UpdateItems(new List<MediaItem> { result.Item });
+                                await _searchIndex.UpdateItems(_searchRepository, new List<MediaItem> { result.Item });
                             }
                         },
                         error =>
@@ -124,6 +143,7 @@ namespace ErsatzTV.Core.Metadata
                 }
             }
 
+            _searchIndex.Commit();
             return Unit.Default;
         }
 

ErsatzTV.Core/Metadata/MusicVideoFolderScanner.cs

@@ -10,18 +10,23 @@ using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
 using static LanguageExt.Prelude;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Metadata
 {
     public class MusicVideoFolderScanner : LocalFolderScanner, IMusicVideoFolderScanner
     {
+        private readonly IArtistRepository _artistRepository;
         private readonly ILocalFileSystem _localFileSystem;
         private readonly ILocalMetadataProvider _localMetadataProvider;
         private readonly ILogger<MusicVideoFolderScanner> _logger;
+        private readonly IMediator _mediator;
         private readonly IMusicVideoRepository _musicVideoRepository;
         private readonly ISearchIndex _searchIndex;
+        private readonly ISearchRepository _searchRepository;
 
         public MusicVideoFolderScanner(
             ILocalFileSystem localFileSystem,
@@ -30,7 +35,10 @@ namespace ErsatzTV.Core.Metadata
             IMetadataRepository metadataRepository,
             IImageCache imageCache,
             ISearchIndex searchIndex,
+            ISearchRepository searchRepository,
+            IArtistRepository artistRepository,
             IMusicVideoRepository musicVideoRepository,
+            IMediator mediator,
             ILogger<MusicVideoFolderScanner> logger) : base(
             localFileSystem,
             localStatisticsProvider,
@@ -41,48 +49,205 @@ namespace ErsatzTV.Core.Metadata
             _localFileSystem = localFileSystem;
             _localMetadataProvider = localMetadataProvider;
             _searchIndex = searchIndex;
+            _searchRepository = searchRepository;
+            _artistRepository = artistRepository;
             _musicVideoRepository = musicVideoRepository;
+            _mediator = mediator;
             _logger = logger;
         }
 
         public async Task<Either<BaseError, Unit>> ScanFolder(
             LibraryPath libraryPath,
             string ffprobePath,
-            DateTimeOffset lastScan)
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax)
         {
+            decimal progressSpread = progressMax - progressMin;
+
             if (!_localFileSystem.IsLibraryPathAccessible(libraryPath))
             {
                 return new MediaSourceInaccessible();
             }
 
-            var folderQueue = new Queue<string>();
-            foreach (string folder in _localFileSystem.ListSubdirectories(libraryPath.Path).OrderBy(identity))
+            var allArtistFolders = _localFileSystem.ListSubdirectories(libraryPath.Path)
+                .Filter(ShouldIncludeFolder)
+                .OrderBy(identity)
+                .ToList();
+
+            foreach (string artistFolder in allArtistFolders)
             {
-                folderQueue.Enqueue(folder);
+                // _logger.LogDebug("Scanning artist folder {Folder}", artistFolder);
+
+                decimal percentCompletion = (decimal) allArtistFolders.IndexOf(artistFolder) / allArtistFolders.Count;
+                await _mediator.Publish(
+                    new LibraryScanProgress(libraryPath.LibraryId, progressMin + percentCompletion * progressSpread));
+
+                Either<BaseError, MediaItemScanResult<Artist>> maybeArtist =
+                    await FindOrCreateArtist(libraryPath.Id, artistFolder)
+                        .BindT(artist => UpdateMetadataForArtist(artist, artistFolder))
+                        .BindT(artist => UpdateArtworkForArtist(artist, artistFolder, ArtworkKind.Thumbnail))
+                        .BindT(artist => UpdateArtworkForArtist(artist, artistFolder, ArtworkKind.FanArt));
+
+                await maybeArtist.Match(
+                    async result =>
+                    {
+                        await ScanMusicVideos(
+                            libraryPath,
+                            ffprobePath,
+                            result.Item,
+                            artistFolder,
+                            // force scanning all folders if we're adding a new artist
+                            result.IsAdded ? DateTimeOffset.MinValue : lastScan);
+
+                        if (result.IsAdded)
+                        {
+                            await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
+                        }
+                        else if (result.IsUpdated)
+                        {
+                            await _searchIndex.UpdateItems(_searchRepository, new List<MediaItem> { result.Item });
+                        }
+                    },
+                    error =>
+                    {
+                        _logger.LogWarning(
+                            "Error processing artist in folder {Folder}: {Error}",
+                            artistFolder,
+                            error.Value);
+                        return Task.FromResult(Unit.Default);
+                    });
             }
 
+            foreach (string path in await _musicVideoRepository.FindOrphanPaths(libraryPath))
+            {
+                _logger.LogInformation("Removing improperly named music video at {Path}", path);
+                List<int> musicVideoIds = await _musicVideoRepository.DeleteByPath(libraryPath, path);
+                await _searchIndex.RemoveItems(musicVideoIds);
+            }
+
+            foreach (string path in await _musicVideoRepository.FindMusicVideoPaths(libraryPath))
+            {
+                if (!_localFileSystem.FileExists(path))
+                {
+                    _logger.LogInformation("Removing missing music video at {Path}", path);
+                    List<int> musicVideoIds = await _musicVideoRepository.DeleteByPath(libraryPath, path);
+                    await _searchIndex.RemoveItems(musicVideoIds);
+                }
+            }
+
+            List<int> artistIds = await _artistRepository.DeleteEmptyArtists(libraryPath);
+            await _searchIndex.RemoveItems(artistIds);
+
+            _searchIndex.Commit();
+            return Unit.Default;
+        }
+
+        private async Task<Either<BaseError, MediaItemScanResult<Artist>>> FindOrCreateArtist(
+            int libraryPathId,
+            string artistFolder)
+        {
+            ArtistMetadata metadata = await _localMetadataProvider.GetMetadataForArtist(artistFolder);
+            Option<Artist> maybeArtist = await _artistRepository.GetArtistByMetadata(libraryPathId, metadata);
+            return await maybeArtist.Match(
+                artist => Right<BaseError, MediaItemScanResult<Artist>>(new MediaItemScanResult<Artist>(artist))
+                    .AsTask(),
+                async () => await _artistRepository.AddArtist(libraryPathId, artistFolder, metadata));
+        }
+
+        private async Task<Either<BaseError, MediaItemScanResult<Artist>>> UpdateMetadataForArtist(
+            MediaItemScanResult<Artist> result,
+            string artistFolder)
+        {
+            try
+            {
+                Artist artist = result.Item;
+                await LocateNfoFileForArtist(artistFolder).Match(
+                    async nfoFile =>
+                    {
+                        bool shouldUpdate = Optional(artist.ArtistMetadata).Flatten().HeadOrNone().Match(
+                            m => m.MetadataKind == MetadataKind.Fallback ||
+                                 m.DateUpdated < _localFileSystem.GetLastWriteTime(nfoFile),
+                            true);
+
+                        if (shouldUpdate)
+                        {
+                            _logger.LogDebug("Refreshing {Attribute} from {Path}", "Sidecar Metadata", nfoFile);
+                            if (await _localMetadataProvider.RefreshSidecarMetadata(artist, nfoFile))
+                            {
+                                result.IsUpdated = true;
+                            }
+                        }
+                    },
+                    async () =>
+                    {
+                        if (!Optional(artist.ArtistMetadata).Flatten().Any())
+                        {
+                            _logger.LogDebug("Refreshing {Attribute} for {Path}", "Fallback Metadata", artistFolder);
+                            if (await _localMetadataProvider.RefreshFallbackMetadata(artist, artistFolder))
+                            {
+                                result.IsUpdated = true;
+                            }
+                        }
+                    });
+
+                return result;
+            }
+            catch (Exception ex)
+            {
+                return BaseError.New(ex.ToString());
+            }
+        }
+
+        private async Task<Either<BaseError, MediaItemScanResult<Artist>>> UpdateArtworkForArtist(
+            MediaItemScanResult<Artist> result,
+            string artistFolder,
+            ArtworkKind artworkKind)
+        {
+            try
+            {
+                Artist artist = result.Item;
+                await LocateArtworkForArtist(artistFolder, artworkKind).IfSomeAsync(
+                    async artworkFile =>
+                    {
+                        ArtistMetadata metadata = artist.ArtistMetadata.Head();
+                        await RefreshArtwork(artworkFile, metadata, artworkKind);
+                    });
+
+                return result;
+            }
+            catch (Exception ex)
+            {
+                return BaseError.New(ex.ToString());
+            }
+        }
+
+        public async Task ScanMusicVideos(
+            LibraryPath libraryPath,
+            string ffprobePath,
+            Artist artist,
+            string artistFolder,
+            DateTimeOffset lastScan)
+        {
+            var folderQueue = new Queue<string>();
+            folderQueue.Enqueue(artistFolder);
+
             while (folderQueue.Count > 0)
             {
-                string movieFolder = folderQueue.Dequeue();
+                string musicVideoFolder = folderQueue.Dequeue();
+                // _logger.LogDebug("Scanning music video folder {Folder}", musicVideoFolder);
 
-                var allFiles = _localFileSystem.ListFiles(movieFolder)
+                var allFiles = _localFileSystem.ListFiles(musicVideoFolder)
                     .Filter(f => VideoFileExtensions.Contains(Path.GetExtension(f)))
-                    .Filter(
-                        f => !ExtraFiles.Any(
-                            e => Path.GetFileNameWithoutExtension(f).EndsWith(e, StringComparison.OrdinalIgnoreCase)))
                     .ToList();
 
-                if (allFiles.Count == 0)
+                foreach (string subdirectory in _localFileSystem.ListSubdirectories(musicVideoFolder)
+                    .OrderBy(identity))
                 {
-                    foreach (string subdirectory in _localFileSystem.ListSubdirectories(movieFolder).OrderBy(identity))
-                    {
-                        folderQueue.Enqueue(subdirectory);
-                    }
-
-                    continue;
+                    folderQueue.Enqueue(subdirectory);
                 }
 
-                if (_localFileSystem.GetLastWriteTime(movieFolder) < lastScan)
+                if (_localFileSystem.GetLastWriteTime(musicVideoFolder) < lastScan)
                 {
                     continue;
                 }
@@ -90,22 +255,22 @@ namespace ErsatzTV.Core.Metadata
                 foreach (string file in allFiles.OrderBy(identity))
                 {
                     // TODO: figure out how to rebuild playouts
-                    Either<BaseError, MediaItemScanResult<MusicVideo>> maybeMusicVideo =
-                        await FindOrCreateMusicVideo(libraryPath, file)
-                            .BindT(musicVideo => UpdateStatistics(musicVideo, ffprobePath))
-                            .BindT(UpdateMetadata)
-                            .BindT(UpdateThumbnail);
+                    Either<BaseError, MediaItemScanResult<MusicVideo>> maybeMusicVideo = await _musicVideoRepository
+                        .GetOrAdd(artist, libraryPath, file)
+                        .BindT(musicVideo => UpdateStatistics(musicVideo, ffprobePath))
+                        .BindT(UpdateMetadata)
+                        .BindT(UpdateThumbnail);
 
                     await maybeMusicVideo.Match(
                         async result =>
                         {
                             if (result.IsAdded)
                             {
-                                await _searchIndex.AddItems(new List<MediaItem> { result.Item });
+                                await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
                             }
                             else if (result.IsUpdated)
                             {
-                                await _searchIndex.UpdateItems(new List<MediaItem> { result.Item });
+                                await _searchIndex.UpdateItems(_searchRepository, new List<MediaItem> { result.Item });
                             }
                         },
                         error =>
@@ -115,39 +280,6 @@ namespace ErsatzTV.Core.Metadata
                         });
                 }
             }
-
-            foreach (string path in await _musicVideoRepository.FindMusicVideoPaths(libraryPath))
-            {
-                if (!_localFileSystem.FileExists(path))
-                {
-                    _logger.LogInformation("Removing missing music video at {Path}", path);
-                    List<int> ids = await _musicVideoRepository.DeleteByPath(libraryPath, path);
-                    await _searchIndex.RemoveItems(ids);
-                }
-            }
-
-            return Unit.Default;
-        }
-
-        private async Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> FindOrCreateMusicVideo(
-            LibraryPath libraryPath,
-            string filePath)
-        {
-            Option<MusicVideoMetadata> maybeMetadata = await _localMetadataProvider.GetMetadataForMusicVideo(filePath);
-            return await maybeMetadata.Match(
-                async metadata =>
-                {
-                    Option<MusicVideo> maybeMusicVideo =
-                        await _musicVideoRepository.GetByMetadata(libraryPath, metadata);
-                    return await maybeMusicVideo.Match(
-                        musicVideo =>
-                            Right<BaseError, MediaItemScanResult<MusicVideo>>(
-                                    new MediaItemScanResult<MusicVideo>(musicVideo))
-                                .AsTask(),
-                        async () => await _musicVideoRepository.Add(libraryPath, filePath, metadata));
-                },
-                () => Left<BaseError, MediaItemScanResult<MusicVideo>>(
-                    BaseError.New("Unable to locate metadata for music video")).AsTask());
         }
 
         private async Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> UpdateMetadata(
@@ -156,7 +288,7 @@ namespace ErsatzTV.Core.Metadata
             try
             {
                 MusicVideo musicVideo = result.Item;
-                return await LocateNfoFile(musicVideo).Match<Task<Either<BaseError, MediaItemScanResult<MusicVideo>>>>(
+                await LocateNfoFile(musicVideo).Match(
                     async nfoFile =>
                     {
                         bool shouldUpdate = Optional(musicVideo.MusicVideoMetadata).Flatten().HeadOrNone().Match(
@@ -172,11 +304,23 @@ namespace ErsatzTV.Core.Metadata
                                 result.IsUpdated = true;
                             }
                         }
-
-                        return result;
                     },
-                    () => Left<BaseError, MediaItemScanResult<MusicVideo>>(
-                        BaseError.New("Unable to locate metadata for music video")).AsTask());
+                    async () =>
+                    {
+                        if (!Optional(musicVideo.MusicVideoMetadata).Flatten().Any())
+                        {
+                            musicVideo.MusicVideoMetadata ??= new List<MusicVideoMetadata>();
+
+                            string path = musicVideo.MediaVersions.Head().MediaFiles.Head().Path;
+                            _logger.LogDebug("Refreshing {Attribute} for {Path}", "Fallback Metadata", path);
+                            if (await _localMetadataProvider.RefreshFallbackMetadata(musicVideo))
+                            {
+                                result.IsUpdated = true;
+                            }
+                        }
+                    });
+
+                return result;
             }
             catch (Exception ex)
             {
@@ -184,6 +328,26 @@ namespace ErsatzTV.Core.Metadata
             }
         }
 
+        private Option<string> LocateNfoFileForArtist(string artistFolder) =>
+            Optional(Path.Combine(artistFolder, "artist.nfo"))
+                .Filter(s => _localFileSystem.FileExists(s));
+
+        private Option<string> LocateArtworkForArtist(string artistFolder, ArtworkKind artworkKind)
+        {
+            string segment = artworkKind switch
+            {
+                ArtworkKind.Thumbnail => "thumb",
+                ArtworkKind.FanArt => "fanart",
+                _ => throw new ArgumentOutOfRangeException(nameof(artworkKind))
+            };
+
+            return ImageFileExtensions
+                .Map(ext => $"{segment}.{ext}")
+                .Map(f => Path.Combine(artistFolder, f))
+                .Filter(s => _localFileSystem.FileExists(s))
+                .HeadOrNone();
+        }
+
         private Option<string> LocateNfoFile(MusicVideo musicVideo)
         {
             string path = musicVideo.MediaVersions.Head().MediaFiles.Head().Path;

ErsatzTV.Core/Metadata/Nfo/ArtistNfo.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using System.Xml.Serialization;
+
+namespace ErsatzTV.Core.Metadata.Nfo
+{
+    [XmlRoot("artist")]
+    public class ArtistNfo
+    {
+        [XmlElement("name")]
+        public string Name { get; set; }
+
+        [XmlElement("disambiguation")]
+        public string Disambiguation { get; set; }
+
+        [XmlElement("genre")]
+        public List<string> Genres { get; set; }
+
+        [XmlElement("style")]
+        public List<string> Styles { get; set; }
+
+        [XmlElement("mood")]
+        public List<string> Moods { get; set; }
+
+        [XmlElement("biography")]
+        public string Biography { get; set; }
+    }
+}

ErsatzTV.Core/Metadata/TelevisionFolderScanner.cs

@@ -10,8 +10,10 @@ using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
 using static LanguageExt.Prelude;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Metadata
 {
@@ -20,7 +22,9 @@ namespace ErsatzTV.Core.Metadata
         private readonly ILocalFileSystem _localFileSystem;
         private readonly ILocalMetadataProvider _localMetadataProvider;
         private readonly ILogger<TelevisionFolderScanner> _logger;
+        private readonly IMediator _mediator;
         private readonly ISearchIndex _searchIndex;
+        private readonly ISearchRepository _searchRepository;
         private readonly ITelevisionRepository _televisionRepository;
 
         public TelevisionFolderScanner(
@@ -31,6 +35,8 @@ namespace ErsatzTV.Core.Metadata
             IMetadataRepository metadataRepository,
             IImageCache imageCache,
             ISearchIndex searchIndex,
+            ISearchRepository searchRepository,
+            IMediator mediator,
             ILogger<TelevisionFolderScanner> logger) : base(
             localFileSystem,
             localStatisticsProvider,
@@ -42,14 +48,20 @@ namespace ErsatzTV.Core.Metadata
             _televisionRepository = televisionRepository;
             _localMetadataProvider = localMetadataProvider;
             _searchIndex = searchIndex;
+            _searchRepository = searchRepository;
+            _mediator = mediator;
             _logger = logger;
         }
 
         public async Task<Either<BaseError, Unit>> ScanFolder(
             LibraryPath libraryPath,
             string ffprobePath,
-            DateTimeOffset lastScan)
+            DateTimeOffset lastScan,
+            decimal progressMin,
+            decimal progressMax)
         {
+            decimal progressSpread = progressMax - progressMin;
+
             if (!_localFileSystem.IsLibraryPathAccessible(libraryPath))
             {
                 return new MediaSourceInaccessible();
@@ -62,6 +74,10 @@ namespace ErsatzTV.Core.Metadata
 
             foreach (string showFolder in allShowFolders)
             {
+                decimal percentCompletion = (decimal) allShowFolders.IndexOf(showFolder) / allShowFolders.Count;
+                await _mediator.Publish(
+                    new LibraryScanProgress(libraryPath.LibraryId, progressMin + percentCompletion * progressSpread));
+
                 Either<BaseError, MediaItemScanResult<Show>> maybeShow =
                     await FindOrCreateShow(libraryPath.Id, showFolder)
                         .BindT(show => UpdateMetadataForShow(show, showFolder))
@@ -71,15 +87,6 @@ namespace ErsatzTV.Core.Metadata
                 await maybeShow.Match(
                     async result =>
                     {
-                        if (result.IsAdded)
-                        {
-                            await _searchIndex.AddItems(new List<MediaItem> { result.Item });
-                        }
-                        else if (result.IsUpdated)
-                        {
-                            await _searchIndex.UpdateItems(new List<MediaItem> { result.Item });
-                        }
-
                         await ScanSeasons(
                             libraryPath,
                             ffprobePath,
@@ -87,6 +94,15 @@ namespace ErsatzTV.Core.Metadata
                             showFolder,
                             // force scanning all folders if we're adding a new show
                             result.IsAdded ? DateTimeOffset.MinValue : lastScan);
+
+                        if (result.IsAdded)
+                        {
+                            await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
+                        }
+                        else if (result.IsUpdated)
+                        {
+                            await _searchIndex.UpdateItems(_searchRepository, new List<MediaItem> { result.Item });
+                        }
                     },
                     error =>
                     {
@@ -111,6 +127,7 @@ namespace ErsatzTV.Core.Metadata
             List<int> ids = await _televisionRepository.DeleteEmptyShows(libraryPath);
             await _searchIndex.RemoveItems(ids);
 
+            _searchIndex.Commit();
             return Unit.Default;
         }
 
@@ -384,10 +401,6 @@ namespace ErsatzTV.Core.Metadata
                 .HeadOrNone();
         }
 
-        private bool ShouldIncludeFolder(string folder) =>
-            !Path.GetFileName(folder).StartsWith('.') &&
-            !_localFileSystem.FileExists(Path.Combine(folder, ".etvignore"));
-
         private static Option<int> SeasonNumberForFolder(string folder)
         {
             if (int.TryParse(folder.Split(" ").Last(), out int seasonNumber))

ErsatzTV.Core/Plex/PlexLibraryScanner.cs

@@ -3,16 +3,21 @@ using System.Threading.Tasks;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Repositories;
 using LanguageExt;
+using Microsoft.Extensions.Logging;
 using static LanguageExt.Prelude;
 
 namespace ErsatzTV.Core.Plex
 {
     public abstract class PlexLibraryScanner
     {
+        private readonly ILogger<PlexLibraryScanner> _logger;
         private readonly IMetadataRepository _metadataRepository;
 
-        protected PlexLibraryScanner(IMetadataRepository metadataRepository) =>
+        protected PlexLibraryScanner(IMetadataRepository metadataRepository, ILogger<PlexLibraryScanner> logger)
+        {
             _metadataRepository = metadataRepository;
+            _logger = logger;
+        }
 
         protected async Task<Unit> UpdateArtworkIfNeeded(
             Domain.Metadata existingMetadata,
@@ -27,6 +32,8 @@ namespace ErsatzTV.Core.Plex
                 await maybeIncomingArtwork.Match(
                     async incomingArtwork =>
                     {
+                        _logger.LogDebug("Refreshing Plex {Attribute} from {Path}", artworkKind, incomingArtwork.Path);
+
                         Option<Artwork> maybeExistingArtwork = Optional(existingMetadata.Artwork).Flatten()
                             .Find(a => a.ArtworkKind == artworkKind);
 

ErsatzTV.Core/Plex/PlexMovieLibraryScanner.cs

@@ -7,30 +7,38 @@ using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using ErsatzTV.Core.Metadata;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Plex
 {
     public class PlexMovieLibraryScanner : PlexLibraryScanner, IPlexMovieLibraryScanner
     {
         private readonly ILogger<PlexMovieLibraryScanner> _logger;
+        private readonly IMediator _mediator;
         private readonly IMetadataRepository _metadataRepository;
         private readonly IMovieRepository _movieRepository;
         private readonly IPlexServerApiClient _plexServerApiClient;
         private readonly ISearchIndex _searchIndex;
+        private readonly ISearchRepository _searchRepository;
 
         public PlexMovieLibraryScanner(
             IPlexServerApiClient plexServerApiClient,
             IMovieRepository movieRepository,
             IMetadataRepository metadataRepository,
             ISearchIndex searchIndex,
+            ISearchRepository searchRepository,
+            IMediator mediator,
             ILogger<PlexMovieLibraryScanner> logger)
-            : base(metadataRepository)
+            : base(metadataRepository, logger)
         {
             _plexServerApiClient = plexServerApiClient;
             _movieRepository = movieRepository;
             _metadataRepository = metadataRepository;
             _searchIndex = searchIndex;
+            _searchRepository = searchRepository;
+            _mediator = mediator;
             _logger = logger;
         }
 
@@ -49,6 +57,9 @@ namespace ErsatzTV.Core.Plex
                 {
                     foreach (PlexMovie incoming in movieEntries)
                     {
+                        decimal percentCompletion = (decimal) movieEntries.IndexOf(incoming) / movieEntries.Count;
+                        await _mediator.Publish(new LibraryScanProgress(plexMediaSourceLibrary.Id, percentCompletion));
+
                         // TODO: figure out how to rebuild playlists
                         Either<BaseError, MediaItemScanResult<PlexMovie>> maybeMovie = await _movieRepository
                             .GetOrAdd(plexMediaSourceLibrary, incoming)
@@ -61,11 +72,13 @@ namespace ErsatzTV.Core.Plex
                             {
                                 if (result.IsAdded)
                                 {
-                                    await _searchIndex.AddItems(new List<MediaItem> { result.Item });
+                                    await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
                                 }
                                 else if (result.IsUpdated)
                                 {
-                                    await _searchIndex.UpdateItems(new List<MediaItem> { result.Item });
+                                    await _searchIndex.UpdateItems(
+                                        _searchRepository,
+                                        new List<MediaItem> { result.Item });
                                 }
                             },
                             error =>
@@ -81,6 +94,8 @@ namespace ErsatzTV.Core.Plex
                     var movieKeys = movieEntries.Map(s => s.Key).ToList();
                     List<int> ids = await _movieRepository.RemoveMissingPlexMovies(plexMediaSourceLibrary, movieKeys);
                     await _searchIndex.RemoveItems(ids);
+
+                    await _mediator.Publish(new LibraryScanProgress(plexMediaSourceLibrary.Id, 0));
                 },
                 error =>
                 {
@@ -92,6 +107,7 @@ namespace ErsatzTV.Core.Plex
                     return Task.CompletedTask;
                 });
 
+            _searchIndex.Commit();
             return Unit.Default;
         }
 
@@ -113,6 +129,11 @@ namespace ErsatzTV.Core.Plex
                 await maybeStatistics.Match(
                     async mediaVersion =>
                     {
+                        _logger.LogDebug(
+                            "Refreshing {Attribute} from {Path}",
+                            "Plex Statistics",
+                            existingVersion.MediaFiles.Head().Path);
+
                         existingVersion.SampleAspectRatio = mediaVersion.SampleAspectRatio;
                         existingVersion.VideoScanKind = mediaVersion.VideoScanKind;
                         existingVersion.DateUpdated = mediaVersion.DateUpdated;
@@ -135,6 +156,11 @@ namespace ErsatzTV.Core.Plex
 
             if (incomingMetadata.DateUpdated > existingMetadata.DateUpdated)
             {
+                _logger.LogDebug(
+                    "Refreshing {Attribute} from {Path}",
+                    "Plex Metadata",
+                    existing.MediaVersions.Head().MediaFiles.Head().Path);
+
                 foreach (Genre genre in existingMetadata.Genres
                     .Filter(g => incomingMetadata.Genres.All(g2 => g2.Name != g.Name))
                     .ToList())

ErsatzTV.Core/Plex/PlexTelevisionLibraryScanner.cs

@@ -7,17 +7,21 @@ using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Search;
 using ErsatzTV.Core.Metadata;
 using LanguageExt;
+using MediatR;
 using Microsoft.Extensions.Logging;
 using static LanguageExt.Prelude;
+using Unit = LanguageExt.Unit;
 
 namespace ErsatzTV.Core.Plex
 {
     public class PlexTelevisionLibraryScanner : PlexLibraryScanner, IPlexTelevisionLibraryScanner
     {
         private readonly ILogger<PlexTelevisionLibraryScanner> _logger;
+        private readonly IMediator _mediator;
         private readonly IMetadataRepository _metadataRepository;
         private readonly IPlexServerApiClient _plexServerApiClient;
         private readonly ISearchIndex _searchIndex;
+        private readonly ISearchRepository _searchRepository;
         private readonly ITelevisionRepository _televisionRepository;
 
         public PlexTelevisionLibraryScanner(
@@ -25,13 +29,17 @@ namespace ErsatzTV.Core.Plex
             ITelevisionRepository televisionRepository,
             IMetadataRepository metadataRepository,
             ISearchIndex searchIndex,
+            ISearchRepository searchRepository,
+            IMediator mediator,
             ILogger<PlexTelevisionLibraryScanner> logger)
-            : base(metadataRepository)
+            : base(metadataRepository, logger)
         {
             _plexServerApiClient = plexServerApiClient;
             _televisionRepository = televisionRepository;
             _metadataRepository = metadataRepository;
             _searchIndex = searchIndex;
+            _searchRepository = searchRepository;
+            _mediator = mediator;
             _logger = logger;
         }
 
@@ -50,6 +58,9 @@ namespace ErsatzTV.Core.Plex
                 {
                     foreach (PlexShow incoming in showEntries)
                     {
+                        decimal percentCompletion = (decimal) showEntries.IndexOf(incoming) / showEntries.Count;
+                        await _mediator.Publish(new LibraryScanProgress(plexMediaSourceLibrary.Id, percentCompletion));
+
                         // TODO: figure out how to rebuild playlists
                         Either<BaseError, MediaItemScanResult<PlexShow>> maybeShow = await _televisionRepository
                             .GetOrAddPlexShow(plexMediaSourceLibrary, incoming)
@@ -59,16 +70,18 @@ namespace ErsatzTV.Core.Plex
                         await maybeShow.Match(
                             async result =>
                             {
+                                await ScanSeasons(plexMediaSourceLibrary, result.Item, connection, token);
+
                                 if (result.IsAdded)
                                 {
-                                    await _searchIndex.AddItems(new List<MediaItem> { result.Item });
+                                    await _searchIndex.AddItems(_searchRepository, new List<MediaItem> { result.Item });
                                 }
                                 else if (result.IsUpdated)
                                 {
-                                    await _searchIndex.UpdateItems(new List<MediaItem> { result.Item });
+                                    await _searchIndex.UpdateItems(
+                                        _searchRepository,
+                                        new List<MediaItem> { result.Item });
                                 }
-
-                                await ScanSeasons(plexMediaSourceLibrary, result.Item, connection, token);
                             },
                             error =>
                             {
@@ -85,6 +98,9 @@ namespace ErsatzTV.Core.Plex
                         await _televisionRepository.RemoveMissingPlexShows(plexMediaSourceLibrary, showKeys);
                     await _searchIndex.RemoveItems(ids);
 
+                    await _mediator.Publish(new LibraryScanProgress(plexMediaSourceLibrary.Id, 0));
+
+                    _searchIndex.Commit();
                     return Unit.Default;
                 },
                 error =>

ErsatzTV.Core/Scheduling/PlayoutBuilder.cs

@@ -475,20 +475,28 @@ namespace ErsatzTV.Core.Scheduling
             }
         }
 
-        private static string DisplayTitle(MediaItem mediaItem) =>
-            mediaItem switch
+        private static string DisplayTitle(MediaItem mediaItem)
+        {
+            switch (mediaItem)
             {
-                Episode e => e.EpisodeMetadata.Any() && e.Season != null
-                    ? $"{e.EpisodeMetadata.Head().Title} - s{e.Season.SeasonNumber:00}e{e.EpisodeNumber:00}"
-                    : "[unknown episode]",
-                Movie m => m.MovieMetadata.HeadOrNone().Match(
-                    mm => mm.Title ?? string.Empty,
-                    () => "[unknown movie]"),
-                MusicVideo mv => mv.MusicVideoMetadata.HeadOrNone().Match(
-                    mvm => $"{mvm.Artist} - {mvm.Title}",
-                    () => "[unknown music video]"),
-                _ => string.Empty
-            };
+                case Episode e:
+                    string showTitle = e.Season.Show.ShowMetadata.HeadOrNone()
+                        .Map(sm => $"{sm.Title} - ").IfNone(string.Empty);
+                    return e.EpisodeMetadata.HeadOrNone()
+                        .Map(em => $"{showTitle}s{e.Season.SeasonNumber:00}e{e.EpisodeNumber:00} - {em.Title}")
+                        .IfNone("[unknown episode]");
+                case Movie m:
+                    return m.MovieMetadata.HeadOrNone().Match(mm => mm.Title ?? string.Empty, () => "[unknown movie]");
+                case MusicVideo mv:
+                    string artistName = mv.Artist.ArtistMetadata.HeadOrNone()
+                        .Map(am => $"{am.Title} - ").IfNone(string.Empty);
+                    return mv.MusicVideoMetadata.HeadOrNone()
+                        .Map(mvm => $"{artistName}{mvm.Title}")
+                        .IfNone("[unknown music video]");
+                default:
+                    return string.Empty;
+            }
+        }
 
         private static CollectionKey CollectionKeyForItem(ProgramScheduleItem item) =>
             item.CollectionType switch

ErsatzTV.Infrastructure/Data/Configurations/MediaItem/ArtistConfiguration.cs

@@ -0,0 +1,24 @@
+using ErsatzTV.Core.Domain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace ErsatzTV.Infrastructure.Data.Configurations
+{
+    public class ArtistConfiguration : IEntityTypeConfiguration<Artist>
+    {
+        public void Configure(EntityTypeBuilder<Artist> builder)
+        {
+            builder.ToTable("Artist");
+
+            builder.HasMany(a => a.MusicVideos)
+                .WithOne(mv => mv.Artist)
+                .HasForeignKey(mv => mv.ArtistId)
+                .OnDelete(DeleteBehavior.Cascade);
+
+            builder.HasMany(a => a.ArtistMetadata)
+                .WithOne(am => am.Artist)
+                .HasForeignKey(am => am.ArtistId)
+                .OnDelete(DeleteBehavior.Cascade);
+        }
+    }
+}

ErsatzTV.Infrastructure/Data/Configurations/Metadata/ArtistMetadataConfiguration.cs

@@ -0,0 +1,30 @@
+using ErsatzTV.Core.Domain;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Metadata.Builders;
+
+namespace ErsatzTV.Infrastructure.Data.Configurations
+{
+    public class ArtistMetadataConfiguration : IEntityTypeConfiguration<ArtistMetadata>
+    {
+        public void Configure(EntityTypeBuilder<ArtistMetadata> builder)
+        {
+            builder.ToTable("ArtistMetadata");
+
+            builder.HasMany(sm => sm.Artwork)
+                .WithOne()
+                .OnDelete(DeleteBehavior.Cascade);
+
+            builder.HasMany(sm => sm.Genres)
+                .WithOne()
+                .OnDelete(DeleteBehavior.Cascade);
+
+            builder.HasMany(sm => sm.Styles)
+                .WithOne()
+                .OnDelete(DeleteBehavior.Cascade);
+
+            builder.HasMany(sm => sm.Moods)
+                .WithOne()
+                .OnDelete(DeleteBehavior.Cascade);
+        }
+    }
+}

ErsatzTV.Infrastructure/Data/Repositories/ArtistRepository.cs

@@ -0,0 +1,150 @@
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using Dapper;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Metadata;
+using LanguageExt;
+using Microsoft.EntityFrameworkCore;
+using static LanguageExt.Prelude;
+
+namespace ErsatzTV.Infrastructure.Data.Repositories
+{
+    public class ArtistRepository : IArtistRepository
+    {
+        private readonly IDbConnection _dbConnection;
+        private readonly IDbContextFactory<TvContext> _dbContextFactory;
+
+        public ArtistRepository(IDbContextFactory<TvContext> dbContextFactory, IDbConnection dbConnection)
+        {
+            _dbContextFactory = dbContextFactory;
+            _dbConnection = dbConnection;
+        }
+
+        public async Task<Option<Artist>> GetArtistByMetadata(int libraryPathId, ArtistMetadata metadata)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            Option<int> maybeId = await dbContext.ArtistMetadata
+                .Where(
+                    s => s.Title == metadata.Title && (metadata.MetadataKind == MetadataKind.Fallback ||
+                                                       s.Disambiguation == metadata.Disambiguation))
+                .Where(s => s.Artist.LibraryPathId == libraryPathId)
+                .SingleOrDefaultAsync()
+                .Map(Optional)
+                .MapT(sm => sm.ArtistId);
+
+            return await maybeId.Match(
+                id =>
+                {
+                    return dbContext.Artists
+                        .AsNoTracking()
+                        .Include(s => s.ArtistMetadata)
+                        .ThenInclude(sm => sm.Artwork)
+                        .Include(s => s.ArtistMetadata)
+                        .ThenInclude(sm => sm.Genres)
+                        .Include(s => s.ArtistMetadata)
+                        .ThenInclude(sm => sm.Styles)
+                        .Include(s => s.ArtistMetadata)
+                        .ThenInclude(sm => sm.Moods)
+                        .Include(s => s.LibraryPath)
+                        .ThenInclude(lp => lp.Library)
+                        .OrderBy(s => s.Id)
+                        .SingleOrDefaultAsync(s => s.Id == id)
+                        .Map(Optional);
+                },
+                () => Option<Artist>.None.AsTask());
+        }
+
+        public async Task<Either<BaseError, MediaItemScanResult<Artist>>> AddArtist(
+            int libraryPathId,
+            string artistFolder,
+            ArtistMetadata metadata)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+
+            try
+            {
+                metadata.DateAdded = DateTime.UtcNow;
+                metadata.Genres ??= new List<Genre>();
+                metadata.Styles ??= new List<Style>();
+                metadata.Moods ??= new List<Mood>();
+                var artist = new Artist
+                {
+                    LibraryPathId = libraryPathId,
+                    ArtistMetadata = new List<ArtistMetadata> { metadata }
+                };
+
+                await dbContext.Artists.AddAsync(artist);
+                await dbContext.SaveChangesAsync();
+                await dbContext.Entry(artist).Reference(s => s.LibraryPath).LoadAsync();
+                await dbContext.Entry(artist.LibraryPath).Reference(lp => lp.Library).LoadAsync();
+
+                return new MediaItemScanResult<Artist>(artist) { IsAdded = true };
+            }
+            catch (Exception ex)
+            {
+                return BaseError.New(ex.Message);
+            }
+        }
+
+        public async Task<List<int>> DeleteEmptyArtists(LibraryPath libraryPath)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            List<Artist> artists = await dbContext.Artists
+                .Filter(a => a.LibraryPathId == libraryPath.Id)
+                .Filter(a => a.MusicVideos.Count == 0)
+                .ToListAsync();
+            var ids = artists.Map(a => a.Id).ToList();
+            dbContext.Artists.RemoveRange(artists);
+            await dbContext.SaveChangesAsync();
+            return ids;
+        }
+        
+        public async Task<Option<Artist>> GetArtist(int artistId)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            return await dbContext.Artists
+                .Include(m => m.ArtistMetadata)
+                .ThenInclude(m => m.Artwork)
+                .Include(m => m.ArtistMetadata)
+                .ThenInclude(m => m.Genres)
+                .Include(m => m.ArtistMetadata)
+                .ThenInclude(m => m.Styles)
+                .Include(m => m.ArtistMetadata)
+                .ThenInclude(m => m.Moods)
+                .OrderBy(m => m.Id)
+                .SingleOrDefaultAsync(m => m.Id == artistId)
+                .Map(Optional);
+        }
+
+        public async Task<List<ArtistMetadata>> GetArtistsForCards(List<int> ids)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            return await dbContext.ArtistMetadata
+                .AsNoTracking()
+                .Filter(am => ids.Contains(am.ArtistId))
+                .Include(am => am.Artwork)
+                .OrderBy(am => am.SortTitle)
+                .ToListAsync();
+        }
+
+        public Task<bool> AddGenre(ArtistMetadata metadata, Genre genre) =>
+            _dbConnection.ExecuteAsync(
+                "INSERT INTO Genre (Name, ArtistMetadataId) VALUES (@Name, @MetadataId)",
+                new { genre.Name, MetadataId = metadata.Id }).Map(result => result > 0);
+
+        public Task<bool> AddStyle(ArtistMetadata metadata, Style style) =>
+            _dbConnection.ExecuteAsync(
+                "INSERT INTO Style (Name, ArtistMetadataId) VALUES (@Name, @MetadataId)",
+                new { style.Name, MetadataId = metadata.Id }).Map(result => result > 0);
+
+        public Task<bool> AddMood(ArtistMetadata metadata, Mood mood) =>
+            _dbConnection.ExecuteAsync(
+                "INSERT INTO Mood (Name, ArtistMetadataId) VALUES (@Name, @MetadataId)",
+                new { mood.Name, MetadataId = metadata.Id }).Map(result => result > 0);
+    }
+}

ErsatzTV.Infrastructure/Data/Repositories/LibraryRepository.cs

@@ -62,6 +62,10 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             "UPDATE Library SET LastScan = @LastScan WHERE Id = @Id",
             new { library.LastScan, library.Id }).ToUnit();
 
+        public Task<Unit> UpdateLastScan(LibraryPath libraryPath) => _dbConnection.ExecuteAsync(
+            "UPDATE LibraryPath SET LastScan = @LastScan WHERE Id = @Id",
+            new { libraryPath.LastScan, libraryPath.Id }).ToUnit();
+
         public Task<List<LibraryPath>> GetLocalPaths(int libraryId)
         {
             using TvContext context = _dbContextFactory.CreateDbContext();

ErsatzTV.Infrastructure/Data/Repositories/MediaCollectionRepository.cs

@@ -15,10 +15,15 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
     {
         private readonly IDbConnection _dbConnection;
         private readonly TvContext _dbContext;
+        private readonly IDbContextFactory<TvContext> _dbContextFactory;
 
-        public MediaCollectionRepository(TvContext dbContext, IDbConnection dbConnection)
+        public MediaCollectionRepository(
+            TvContext dbContext,
+            IDbContextFactory<TvContext> dbContextFactory,
+            IDbConnection dbConnection)
         {
             _dbContext = dbContext;
+            _dbContextFactory = dbContextFactory;
             _dbConnection = dbConnection;
         }
 
@@ -29,7 +34,6 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             return collection;
         }
 
-
         public async Task<bool> AddMediaItem(int collectionId, int mediaItemId)
         {
             var modified = false;
@@ -130,9 +134,15 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .ThenInclude(i => (i as Movie).MovieMetadata)
                 .ThenInclude(mm => mm.Artwork)
                 .Include(c => c.MediaItems)
+                .ThenInclude(i => (i as Artist).ArtistMetadata)
+                .ThenInclude(mvm => mvm.Artwork)
+                .Include(c => c.MediaItems)
                 .ThenInclude(i => (i as MusicVideo).MusicVideoMetadata)
                 .ThenInclude(mvm => mvm.Artwork)
                 .Include(c => c.MediaItems)
+                .ThenInclude(i => (i as MusicVideo).Artist)
+                .ThenInclude(a => a.ArtistMetadata)
+                .Include(c => c.MediaItems)
                 .ThenInclude(i => (i as Show).ShowMetadata)
                 .ThenInclude(sm => sm.Artwork)
                 .Include(c => c.MediaItems)
@@ -162,6 +172,22 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
         public Task<List<Collection>> GetAll() =>
             _dbContext.Collections.ToListAsync();
 
+        public Task<int> CountAllCollections() =>
+            _dbConnection.QuerySingleAsync<int>(@"SELECT COUNT (*) FROM Collection");
+
+        public async Task<List<Collection>> GetPagedCollections(int pageNumber, int pageSize)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            return await dbContext.Collections.FromSqlRaw(
+                    @"SELECT * FROM Collection
+                    ORDER BY Name
+                    LIMIT {0} OFFSET {1}",
+                    pageSize,
+                    (pageNumber - 1) * pageSize)
+                .AsNoTracking()
+                .ToListAsync();
+        }
+
         public Task<Option<List<MediaItem>>> GetItems(int id) =>
             Get(id).MapT(GetItemsForCollection).Bind(x => x.Sequence());
 
@@ -201,6 +227,7 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             result.AddRange(await GetShowItems(collection));
             result.AddRange(await GetSeasonItems(collection));
             result.AddRange(await GetEpisodeItems(collection));
+            result.AddRange(await GetArtistItems(collection));
             result.AddRange(await GetMusicVideoItems(collection));
 
             return result.Distinct().ToList();
@@ -221,6 +248,25 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .ToListAsync();
         }
 
+        private async Task<List<MusicVideo>> GetArtistItems(Collection collection)
+        {
+            IEnumerable<int> ids = await _dbConnection.QueryAsync<int>(
+                @"SELECT MusicVideo.Id FROM CollectionItem ci
+            INNER JOIN Artist on Artist.Id = ci.MediaItemId
+            INNER JOIN MusicVideo on Artist.Id = MusicVideo.ArtistId
+            WHERE ci.CollectionId = @CollectionId",
+                new { CollectionId = collection.Id });
+
+            return await _dbContext.MusicVideos
+                .Include(m => m.Artist)
+                .ThenInclude(a => a.ArtistMetadata)
+                .Include(m => m.MusicVideoMetadata)
+                .Include(m => m.MediaVersions)
+                .Filter(m => ids.Contains(m.Id))
+                .ToListAsync();
+        }
+
+
         private async Task<List<MusicVideo>> GetMusicVideoItems(Collection collection)
         {
             IEnumerable<int> ids = await _dbConnection.QueryAsync<int>(
@@ -230,6 +276,8 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 new { CollectionId = collection.Id });
 
             return await _dbContext.MusicVideos
+                .Include(m => m.Artist)
+                .ThenInclude(a => a.ArtistMetadata)
                 .Include(m => m.MusicVideoMetadata)
                 .Include(m => m.MediaVersions)
                 .Filter(m => ids.Contains(m.Id))
@@ -250,6 +298,8 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .Include(e => e.EpisodeMetadata)
                 .Include(e => e.MediaVersions)
                 .Include(e => e.Season)
+                .ThenInclude(s => s.Show)
+                .ThenInclude(s => s.ShowMetadata)
                 .Filter(e => ids.Contains(e.Id))
                 .ToListAsync();
         }
@@ -267,6 +317,8 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .Include(e => e.EpisodeMetadata)
                 .Include(e => e.MediaVersions)
                 .Include(e => e.Season)
+                .ThenInclude(s => s.Show)
+                .ThenInclude(s => s.ShowMetadata)
                 .Filter(e => ids.Contains(e.Id))
                 .ToListAsync();
         }
@@ -283,6 +335,8 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .Include(e => e.EpisodeMetadata)
                 .Include(e => e.MediaVersions)
                 .Include(e => e.Season)
+                .ThenInclude(s => s.Show)
+                .ThenInclude(s => s.ShowMetadata)
                 .Filter(e => ids.Contains(e.Id))
                 .ToListAsync();
         }

ErsatzTV.Infrastructure/Data/Repositories/MediaItemRepository.cs

@@ -1,6 +1,8 @@
 using System.Collections.Generic;
+using System.Data;
 using System.Linq;
 using System.Threading.Tasks;
+using Dapper;
 using ErsatzTV.Core.Domain;
 using ErsatzTV.Core.Interfaces.Repositories;
 using LanguageExt;
@@ -11,10 +13,14 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
 {
     public class MediaItemRepository : IMediaItemRepository
     {
+        private readonly IDbConnection _dbConnection;
         private readonly IDbContextFactory<TvContext> _dbContextFactory;
 
-        public MediaItemRepository(IDbContextFactory<TvContext> dbContextFactory) =>
+        public MediaItemRepository(IDbContextFactory<TvContext> dbContextFactory, IDbConnection dbConnection)
+        {
             _dbContextFactory = dbContextFactory;
+            _dbConnection = dbConnection;
+        }
 
         public async Task<Option<MediaItem>> Get(int id)
         {
@@ -38,5 +44,16 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             context.MediaItems.Update(mediaItem);
             return await context.SaveChangesAsync() > 0;
         }
+
+        public Task<List<string>> GetAllLanguageCodes() =>
+            _dbConnection.QueryAsync<string>(
+                    @"SELECT LanguageCode FROM
+                    (SELECT Language AS LanguageCode
+                    FROM MediaStream WHERE Language IS NOT NULL
+                    UNION ALL SELECT PreferredLanguageCode AS LanguageCode
+                    FROM Channel WHERE PreferredLanguageCode IS NOT NULL)
+                    GROUP BY LanguageCode
+                    ORDER BY COUNT(LanguageCode) DESC")
+                .Map(result => result.ToList());
     }
 }

ErsatzTV.Infrastructure/Data/Repositories/MediaSourceRepository.cs

@@ -155,6 +155,7 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
 
         public async Task Update(
             PlexMediaSource plexMediaSource,
+            List<PlexConnection> sortedConnections,
             List<PlexConnection> toAdd,
             List<PlexConnection> toDelete)
         {
@@ -174,27 +175,34 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                     plexMediaSource.Id
                 });
 
-            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
-
             foreach (PlexConnection add in toAdd)
             {
-                add.PlexMediaSourceId = plexMediaSource.Id;
-                dbContext.Entry(add).State = EntityState.Added;
+                await _dbConnection.ExecuteAsync(
+                    @"INSERT INTO PlexConnection (IsActive, Uri, PlexMediaSourceId)
+                    VALUES (0, @Uri, @PlexMediaSourceId)",
+                    new { add.Uri, PlexMediaSourceId = plexMediaSource.Id });
             }
 
             foreach (PlexConnection delete in toDelete)
             {
-                dbContext.Entry(delete).State = EntityState.Deleted;
+                await _dbConnection.ExecuteAsync(
+                    @"DELETE FROM PlexConnection WHERE Id = @Id",
+                    new { delete.Id });
             }
 
-            await dbContext.SaveChangesAsync();
-
-            PlexMediaSource pms = await dbContext.PlexMediaSources.FindAsync(plexMediaSource.Id);
-            await dbContext.Entry(pms).Collection(x => x.Connections).LoadAsync();
-            if (plexMediaSource.Connections.Any() && plexMediaSource.Connections.All(c => !c.IsActive))
+            int activeCount = await _dbConnection.QuerySingleAsync<int>(
+                @"SELECT COUNT(*) FROM PlexConnection WHERE IsActive = 1 AND PlexMediaSourceId = @PlexMediaSourceId",
+                new { PlexMediaSourceId = plexMediaSource.Id });
+            if (activeCount == 0)
             {
-                plexMediaSource.Connections.Head().IsActive = true;
-                await dbContext.SaveChangesAsync();
+                Option<PlexConnection> toActivate =
+                    sortedConnections.FirstOrDefault(c => toDelete.All(d => d.Id != c.Id));
+
+                // update on uri because connections from Plex API don't have our local ids
+                await toActivate.IfSomeAsync(
+                    async c => await _dbConnection.ExecuteAsync(
+                        @"UPDATE PlexConnection SET IsActive = 1 WHERE Uri = @Uri",
+                        new { c.Uri }));
             }
         }
 
@@ -292,6 +300,23 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             return movieIds.Append(showIds).ToList();
         }
 
+        public async Task<List<int>> DeletePlex(PlexMediaSource plexMediaSource)
+        {
+            List<int> mediaItemIds = await _dbConnection.QueryAsync<int>(
+                    @"SELECT MediaItem.Id FROM MediaItem
+                  INNER JOIN LibraryPath LP on MediaItem.LibraryPathId = LP.Id
+                  INNER JOIN Library L on LP.LibraryId = L.Id
+                  WHERE L.MediaSourceId = @PlexMediaSourceId",
+                    new { PlexMediaSourceId = plexMediaSource.Id })
+                .Map(result => result.ToList());
+
+            await _dbConnection.ExecuteAsync(
+                @"DELETE FROM MediaSource WHERE Id = @PlexMediaSourceId",
+                new { PlexMediaSourceId = plexMediaSource.Id });
+
+            return mediaItemIds;
+        }
+
         public async Task<List<int>> DisablePlexLibrarySync(List<int> libraryIds)
         {
             await _dbConnection.ExecuteAsync(

ErsatzTV.Infrastructure/Data/Repositories/MetadataRepository.cs

@@ -156,6 +156,11 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                             VALUES (@ArtworkKind, @Id, @DateAdded, @DateUpdated, @Path)",
                         parameters)
                     .ToUnit(),
+                ArtistMetadata => _dbConnection.ExecuteAsync(
+                        @"INSERT INTO Artwork (ArtworkKind, ArtistMetadataId, DateAdded, DateUpdated, Path)
+                            Values (@ArtworkKind, @Id, @DateAdded, @DateUpdated, @Path)",
+                        parameters)
+                    .ToUnit(),
                 MusicVideoMetadata => _dbConnection.ExecuteAsync(
                         @"INSERT INTO Artwork (ArtworkKind, MusicVideoMetadataId, DateAdded, DateUpdated, Path)
                             VALUES (@ArtworkKind, @Id, @DateAdded, @DateUpdated, @Path)",
@@ -197,5 +202,13 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
         public Task<bool> RemoveStudio(Studio studio) =>
             _dbConnection.ExecuteAsync("DELETE FROM Studio WHERE Id = @StudioId", new { StudioId = studio.Id })
                 .Map(result => result > 0);
+
+        public Task<bool> RemoveStyle(Style style) =>
+            _dbConnection.ExecuteAsync("DELETE FROM Style WHERE Id = @StyleId", new { StyleId = style.Id })
+                .Map(result => result > 0);
+
+        public Task<bool> RemoveMood(Mood mood) =>
+            _dbConnection.ExecuteAsync("DELETE FROM Mood WHERE Id = @MoodId", new { MoodId = mood.Id })
+                .Map(result => result > 0);
     }
 }

ErsatzTV.Infrastructure/Data/Repositories/MusicVideoRepository.cs

@@ -25,81 +25,48 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             _dbConnection = dbConnection;
         }
 
-        public async Task<Option<MusicVideo>> GetByMetadata(LibraryPath libraryPath, MusicVideoMetadata metadata)
-        {
-            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
-            Option<int> maybeId = await dbContext.MusicVideoMetadata
-                .Where(s => s.Artist == metadata.Artist && s.Title == metadata.Title && s.Year == metadata.Year)
-                .Where(s => s.MusicVideo.LibraryPathId == libraryPath.Id)
-                .SingleOrDefaultAsync()
-                .Map(Optional)
-                .MapT(sm => sm.MusicVideoId);
-
-            return await maybeId.Match(
-                id =>
-                {
-                    return dbContext.MusicVideos
-                        .AsNoTracking()
-                        .Include(mv => mv.MusicVideoMetadata)
-                        .ThenInclude(mvm => mvm.Artwork)
-                        .Include(mv => mv.MusicVideoMetadata)
-                        .ThenInclude(mvm => mvm.Genres)
-                        .Include(mv => mv.MusicVideoMetadata)
-                        .ThenInclude(mvm => mvm.Tags)
-                        .Include(mv => mv.MusicVideoMetadata)
-                        .ThenInclude(mvm => mvm.Studios)
-                        .Include(mv => mv.LibraryPath)
-                        .ThenInclude(lp => lp.Library)
-                        .Include(mv => mv.MediaVersions)
-                        .ThenInclude(mv => mv.MediaFiles)
-                        .OrderBy(mv => mv.Id)
-                        .SingleOrDefaultAsync(mv => mv.Id == id)
-                        .Map(Optional);
-                },
-                () => Option<MusicVideo>.None.AsTask());
-        }
-
-        public async Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> Add(
+        public async Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> GetOrAdd(
+            Artist artist,
             LibraryPath libraryPath,
-            string filePath,
-            MusicVideoMetadata metadata)
+            string path)
         {
             await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            Option<MusicVideo> maybeExisting = await dbContext.MusicVideos
+                .AsNoTracking()
+                .Include(mv => mv.MusicVideoMetadata)
+                .ThenInclude(mvm => mvm.Artwork)
+                .Include(mv => mv.MusicVideoMetadata)
+                .ThenInclude(mvm => mvm.Genres)
+                .Include(mv => mv.MusicVideoMetadata)
+                .ThenInclude(mvm => mvm.Tags)
+                .Include(mv => mv.MusicVideoMetadata)
+                .ThenInclude(mvm => mvm.Studios)
+                .Include(mv => mv.LibraryPath)
+                .ThenInclude(lp => lp.Library)
+                .Include(mv => mv.MediaVersions)
+                .ThenInclude(mv => mv.MediaFiles)
+                .Include(mv => mv.MediaVersions)
+                .ThenInclude(mv => mv.Streams)
+                .OrderBy(i => i.MediaVersions.First().MediaFiles.First().Path)
+                .SingleOrDefaultAsync(i => i.MediaVersions.First().MediaFiles.First().Path == path);
 
-            try
-            {
-                metadata.DateAdded = DateTime.UtcNow;
-                metadata.Genres ??= new List<Genre>();
-                metadata.Tags ??= new List<Tag>();
-                metadata.Studios ??= new List<Studio>();
-                var musicVideo = new MusicVideo
+            return await maybeExisting.Match(
+                async mediaItem =>
                 {
-                    LibraryPathId = libraryPath.Id,
-                    MusicVideoMetadata = new List<MusicVideoMetadata> { metadata },
-                    MediaVersions = new List<MediaVersion>
+                    if (mediaItem.ArtistId != artist.Id)
                     {
-                        new()
-                        {
-                            MediaFiles = new List<MediaFile>
-                            {
-                                new() { Path = filePath }
-                            },
-                            Streams = new List<MediaStream>()
-                        }
+                        await _dbConnection.ExecuteAsync(
+                            @"UPDATE MusicVideo SET ArtistId = @ArtistId WHERE Id = @Id",
+                            new { mediaItem.Id, ArtistId = artist.Id });
+
+                        mediaItem.ArtistId = artist.Id;
+                        mediaItem.Artist = artist;
                     }
-                };
 
-                await dbContext.MusicVideos.AddAsync(musicVideo);
-                await dbContext.SaveChangesAsync();
-                await dbContext.Entry(musicVideo).Reference(s => s.LibraryPath).LoadAsync();
-                await dbContext.Entry(musicVideo.LibraryPath).Reference(lp => lp.Library).LoadAsync();
-
-                return new MediaItemScanResult<MusicVideo>(musicVideo) { IsAdded = true };
-            }
-            catch (Exception ex)
-            {
-                return BaseError.New(ex.Message);
-            }
+                    return Right<BaseError, MediaItemScanResult<MusicVideo>>(
+                        new MediaItemScanResult<MusicVideo>(mediaItem) { IsAdded = false });
+                },
+                async () => await AddMusicVideo(dbContext, artist, libraryPath.Id, path));
         }
 
         public Task<IEnumerable<string>> FindMusicVideoPaths(LibraryPath libraryPath) =>
@@ -118,7 +85,7 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 @"SELECT M.Id
                 FROM MusicVideo M
                 INNER JOIN MediaItem MI on M.Id = MI.Id
-                INNER JOIN MediaVersion MV on M.Id = MV.EpisodeId
+                INNER JOIN MediaVersion MV on M.Id = MV.MusicVideoId
                 INNER JOIN MediaFile MF on MV.Id = MF.MediaVersionId
                 WHERE MI.LibraryPathId = @LibraryPathId AND MF.Path = @Path",
                 new { LibraryPathId = libraryPath.Id, Path = path }).Map(result => result.ToList());
@@ -156,6 +123,9 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
             return await dbContext.MusicVideoMetadata
                 .AsNoTracking()
                 .Filter(mvm => ids.Contains(mvm.MusicVideoId))
+                .Include(mvm => mvm.MusicVideo)
+                .ThenInclude(mv => mv.Artist)
+                .ThenInclude(a => a.ArtistMetadata)
                 .Include(mvm => mvm.Artwork)
                 .OrderBy(mvm => mvm.SortTitle)
                 .ToListAsync();
@@ -177,5 +147,77 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .SingleOrDefaultAsync(m => m.Id == musicVideoId)
                 .Map(Optional);
         }
+
+        public Task<IEnumerable<string>> FindOrphanPaths(LibraryPath libraryPath) =>
+            _dbConnection.QueryAsync<string>(
+                @"SELECT MF.Path
+                FROM MediaFile MF
+                INNER JOIN MediaVersion MV on MF.MediaVersionId = MV.Id
+                INNER JOIN MusicVideo M on MV.MusicVideoId = M.Id
+                INNER JOIN MediaItem MI on M.Id = MI.Id
+                WHERE MI.LibraryPathId = @LibraryPathId
+                  AND NOT EXISTS (SELECT * FROM MusicVideoMetadata WHERE MusicVideoId = M.Id)",
+                new { LibraryPathId = libraryPath.Id });
+
+        public Task<int> GetMusicVideoCount(int artistId) =>
+            _dbConnection.QuerySingleAsync<int>(
+                @"SELECT COUNT(*) FROM MusicVideo WHERE ArtistId = @ArtistId",
+                new { ArtistId = artistId });
+
+        public async Task<List<MusicVideoMetadata>> GetPagedMusicVideos(int artistId, int pageNumber, int pageSize)
+        {
+            await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+            return await dbContext.MusicVideoMetadata
+                .AsNoTracking()
+                .Include(m => m.Artwork)
+                .Include(m => m.Genres)
+                .Include(m => m.Tags)
+                .Include(m => m.Studios)
+                .Include(m => m.MusicVideo)
+                .ThenInclude(mv => mv.Artist)
+                .ThenInclude(a => a.ArtistMetadata)
+                .Filter(m => m.MusicVideo.ArtistId == artistId)
+                .OrderBy(m => m.SortTitle)
+                .Skip((pageNumber - 1) * pageSize)
+                .Take(pageSize)
+                .ToListAsync();
+        }
+
+        private static async Task<Either<BaseError, MediaItemScanResult<MusicVideo>>> AddMusicVideo(
+            TvContext dbContext,
+            Artist artist,
+            int libraryPathId,
+            string path)
+        {
+            try
+            {
+                var musicVideo = new MusicVideo
+                {
+                    ArtistId = artist.Id,
+                    LibraryPathId = libraryPathId,
+                    MediaVersions = new List<MediaVersion>
+                    {
+                        new()
+                        {
+                            MediaFiles = new List<MediaFile>
+                            {
+                                new() { Path = path }
+                            },
+                            Streams = new List<MediaStream>()
+                        }
+                    }
+                };
+
+                await dbContext.MusicVideos.AddAsync(musicVideo);
+                await dbContext.SaveChangesAsync();
+                await dbContext.Entry(musicVideo).Reference(m => m.LibraryPath).LoadAsync();
+                await dbContext.Entry(musicVideo.LibraryPath).Reference(lp => lp.Library).LoadAsync();
+                return new MediaItemScanResult<MusicVideo>(musicVideo) { IsAdded = true };
+            }
+            catch (Exception ex)
+            {
+                return BaseError.New(ex.Message);
+            }
+        }
     }
 }

ErsatzTV.Infrastructure/Data/Repositories/PlayoutRepository.cs

@@ -101,6 +101,9 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .Include(i => i.MediaItem)
                 .ThenInclude(mi => (mi as MusicVideo).MediaVersions)
                 .Include(i => i.MediaItem)
+                .ThenInclude(mi => (mi as MusicVideo).Artist)
+                .ThenInclude(mm => mm.ArtistMetadata)
+                .Include(i => i.MediaItem)
                 .ThenInclude(mi => (mi as Episode).EpisodeMetadata)
                 .ThenInclude(em => em.Artwork)
                 .Include(i => i.MediaItem)

ErsatzTV.Infrastructure/Data/Repositories/SearchRepository.cs

@@ -39,94 +39,51 @@ namespace ErsatzTV.Infrastructure.Data.Repositories
                 .ThenInclude(mm => mm.Tags)
                 .Include(mi => (mi as Movie).MovieMetadata)
                 .ThenInclude(mm => mm.Studios)
+                .Include(mi => (mi as Movie).MediaVersions)
+                .ThenInclude(mm => mm.Streams)
                 .Include(mi => (mi as Show).ShowMetadata)
                 .ThenInclude(mm => mm.Genres)
                 .Include(mi => (mi as Show).ShowMetadata)
                 .ThenInclude(mm => mm.Tags)
                 .Include(mi => (mi as Show).ShowMetadata)
                 .ThenInclude(mm => mm.Studios)
+                .Include(mi => (mi as MusicVideo).MusicVideoMetadata)
+                .ThenInclude(mm => mm.Genres)
+                .Include(mi => (mi as MusicVideo).MusicVideoMetadata)
+                .ThenInclude(mm => mm.Tags)
+                .Include(mi => (mi as MusicVideo).MusicVideoMetadata)
+                .ThenInclude(mm => mm.Studios)
+                .Include(mi => (mi as MusicVideo).MediaVersions)
+                .ThenInclude(mm => mm.Streams)
+                .Include(mi => (mi as Artist).ArtistMetadata)
+                .ThenInclude(mm => mm.Genres)
+                .Include(mi => (mi as Artist).ArtistMetadata)
+                .ThenInclude(mm => mm.Styles)
+                .Include(mi => (mi as Artist).ArtistMetadata)
+                .ThenInclude(mm => mm.Moods)
                 .OrderBy(mi => mi.Id)
                 .SingleOrDefaultAsync(mi => mi.Id == id)
                 .Map(Optional);
         }
 
-        public async Task<List<MediaItem>> SearchMediaItemsByTitle(string query)
-        {
-            List<int> ids = await _dbConnection.QueryAsync<int>(
-                    @"SELECT M.Id FROM Movie M
-                    INNER JOIN MovieMetadata MM on M.Id = MM.MovieId
-                    WHERE MM.Title LIKE @Query
-                    UNION
-                    SELECT S.Id FROM Show S
-                    INNER JOIN ShowMetadata SM on S.Id = SM.ShowId
-                    WHERE SM.Title LIKE @Query
-                    GROUP BY SM.Title, SM.Year",
-                    new { Query = $"%{query}%" })
-                .Map(results => results.ToList());
+        public Task<List<string>> GetLanguagesForShow(Show show) =>
+            _dbConnection.QueryAsync<string>(
+                @"SELECT DISTINCT Language
+                    FROM MediaStream
+                    INNER JOIN MediaVersion MV ON MediaStream.MediaVersionId = MV.Id
+                    INNER JOIN Episode E ON MV.EpisodeId = E.Id
+                    INNER JOIN Season S ON E.SeasonId = S.Id
+                    WHERE MediaStreamKind = 2 AND S.ShowId = @ShowId",
+                new { ShowId = show.Id }).Map(result => result.ToList());
 
-            await using TvContext context = _dbContextFactory.CreateDbContext();
-            return await context.MediaItems
-                .Filter(m => ids.Contains(m.Id))
-                .Include(m => (m as Movie).MovieMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .Include(m => (m as Show).ShowMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .OfType<MediaItem>()
-                .ToListAsync();
-        }
-
-        public async Task<List<MediaItem>> SearchMediaItemsByGenre(string genre)
-        {
-            List<int> ids = await _dbConnection.QueryAsync<int>(
-                    @"SELECT M.Id FROM Movie M
-                    INNER JOIN MovieMetadata MM on M.Id = MM.MovieId
-                    INNER JOIN Genre G on MM.Id = G.MovieMetadataId
-                    WHERE G.Name LIKE @Query
-                    UNION
-                    SELECT S.Id FROM Show S
-                    INNER JOIN ShowMetadata SM on S.Id = SM.ShowId
-                    INNER JOIN Genre G2 on SM.Id = G2.ShowMetadataId
-                    WHERE G2.Name LIKE @Query
-                    GROUP BY SM.Title, SM.Year",
-                    new { Query = genre })
-                .Map(results => results.ToList());
-
-            await using TvContext context = _dbContextFactory.CreateDbContext();
-            return await context.MediaItems
-                .Filter(m => ids.Contains(m.Id))
-                .Include(m => (m as Movie).MovieMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .Include(m => (m as Show).ShowMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .OfType<MediaItem>()
-                .ToListAsync();
-        }
-
-        public async Task<List<MediaItem>> SearchMediaItemsByTag(string tag)
-        {
-            List<int> ids = await _dbConnection.QueryAsync<int>(
-                    @"SELECT M.Id FROM Movie M
-                    INNER JOIN MovieMetadata MM on M.Id = MM.MovieId
-                    INNER JOIN Tag T on MM.Id = T.MovieMetadataId
-                    WHERE T.Name LIKE @Query
-                    UNION
-                    SELECT S.Id FROM Show S
-                    INNER JOIN ShowMetadata SM on S.Id = SM.ShowId
-                    INNER JOIN Tag T2 on SM.Id = T2.ShowMetadataId
-                    WHERE T2.Name LIKE @Query
-                    GROUP BY SM.Title, SM.Year",
-                    new { Query = tag })
-                .Map(results => results.ToList());
-
-            await using TvContext context = _dbContextFactory.CreateDbContext();
-            return await context.MediaItems
-                .Filter(m => ids.Contains(m.Id))
-                .Include(m => (m as Movie).MovieMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .Include(m => (m as Show).ShowMetadata)
-                .ThenInclude(mm => mm.Artwork)
-                .OfType<MediaItem>()
-                .ToListAsync();
-        }
+        public Task<List<string>> GetLanguagesForArtist(Artist artist) =>
+            _dbConnection.QueryAsync<string>(
+                @"SELECT DISTINCT Language
+                    FROM MediaStream
+                    INNER JOIN MediaVersion V ON MediaStream.MediaVersionId = V.Id
+                    INNER JOIN MusicVideo MV ON V.MusicVideoId = MV.Id
+                    INNER JOIN Artist A on MV.ArtistId = A.Id
+                    WHERE MediaStreamKind = 2 AND A.Id = @ArtistId",
+                new { ArtistId = artist.Id }).Map(result => result.ToList());
     }
 }