add external json playout type for dizquetv interop (#1539)

* add external json playout

* basic local playback works

* fallback to streaming from plex

* update external json file

* update changelog

CHANGELOG.md

@@ -13,6 +13,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
     - `None`: no change to scheduling behavior - all groups (shows and artists) will be shuffled/ordered together
     - `Ordered Groups`: each time this item is scheduled, the entire `Duration` or `Multiple` will be filled with a single group, and the groups will rotate in a fixed order
     - `Shuffled Groups`: each time this item is scheduled, the entire `Duration` or `Multiple` will be filled with a single group, and the groups will rotate in a shuffled order
+- Add new playout type `External Json`
+  - Use this playout type when you want to manage the channel schedule using DizqueTV
+  - You must point ErsatzTV to the channel number json file from DizqueTV, e.g. `channels/1.json`
+  - For playback, ErsatzTV will first check for the appropriate media file file locally
+    - If found, ErsatzTV will run ffprobe to get statistics immediately before streaming from disk
+  - When local files are unavailable, ErsatzTV must be logged into the same Plex server as DizqueTV
+    - ErsatzTV will ask Plex for statistics immediately before streaming from Plex
+  - **Note: XMLTV GUIDE DATA IS NOT YET SUPPORTED FOR THIS PLAYOUT TYPE** 
 
 ### Fixed
 - Fix error loading path replacements when using MySql

ErsatzTV.Application/Playouts/Commands/BuildPlayoutHandler.cs

@@ -115,7 +115,7 @@ public class BuildPlayoutHandler : IRequestHandler<BuildPlayout, Either<BaseErro
     private static Validation<BaseError, Playout> DiscardAttemptsMustBeValid(Playout playout)
     {
         foreach (ProgramScheduleItemDuration item in
-                 playout.ProgramSchedule.Items.OfType<ProgramScheduleItemDuration>())
+                 playout.ProgramSchedule?.Items.OfType<ProgramScheduleItemDuration>() ?? [])
         {
             item.DiscardToFillAttempts = item.PlaybackOrder switch
             {

ErsatzTV.Application/Playouts/Commands/CreateExternalJsonPlayoutHandler.cs

@@ -0,0 +1,91 @@
+using System.Threading.Channels;
+using ErsatzTV.Application.Channels;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Metadata;
+using ErsatzTV.Core.Scheduling;
+using ErsatzTV.Infrastructure.Data;
+using ErsatzTV.Infrastructure.Extensions;
+using Microsoft.EntityFrameworkCore;
+using Channel = ErsatzTV.Core.Domain.Channel;
+
+namespace ErsatzTV.Application.Playouts;
+
+public class CreateExternalJsonPlayoutHandler
+    : IRequestHandler<CreateExternalJsonPlayout, Either<BaseError, CreatePlayoutResponse>>
+{
+    private readonly ILocalFileSystem _localFileSystem;
+    private readonly ChannelWriter<IBackgroundServiceRequest> _channel;
+    private readonly IDbContextFactory<TvContext> _dbContextFactory;
+
+    public CreateExternalJsonPlayoutHandler(
+        ILocalFileSystem localFileSystem,
+        ChannelWriter<IBackgroundServiceRequest> channel,
+        IDbContextFactory<TvContext> dbContextFactory)
+    {
+        _localFileSystem = localFileSystem;
+        _channel = channel;
+        _dbContextFactory = dbContextFactory;
+    }
+    
+    public async Task<Either<BaseError, CreatePlayoutResponse>> Handle(
+        CreateExternalJsonPlayout request,
+        CancellationToken cancellationToken)
+    {
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+        Validation<BaseError, Playout> validation = await Validate(dbContext, request);
+        return await validation.Apply(playout => PersistPlayout(dbContext, playout));
+    }
+
+    private async Task<CreatePlayoutResponse> PersistPlayout(TvContext dbContext, Playout playout)
+    {
+        await dbContext.Playouts.AddAsync(playout);
+        await dbContext.SaveChangesAsync();
+        await _channel.WriteAsync(new BuildPlayout(playout.Id, PlayoutBuildMode.Reset));
+        await _channel.WriteAsync(new RefreshChannelList());
+        return new CreatePlayoutResponse(playout.Id);
+    }
+
+    private async Task<Validation<BaseError, Playout>> Validate(
+        TvContext dbContext,
+        CreateExternalJsonPlayout request) =>
+        (await ValidateChannel(dbContext, request), ValidateExternalJsonFile(request), ValidatePlayoutType(request))
+        .Apply(
+            (channel, externalJsonFile, playoutType) => new Playout
+            {
+                ChannelId = channel.Id,
+                ExternalJsonFile = externalJsonFile,
+                ProgramSchedulePlayoutType = playoutType
+            });
+
+    private static Task<Validation<BaseError, Channel>> ValidateChannel(
+        TvContext dbContext,
+        CreateExternalJsonPlayout createExternalJsonPlayout) =>
+        dbContext.Channels
+            .Include(c => c.Playouts)
+            .SelectOneAsync(c => c.Id, c => c.Id == createExternalJsonPlayout.ChannelId)
+            .Map(o => o.ToValidation<BaseError>("Channel does not exist"))
+            .BindT(ChannelMustNotHavePlayouts);
+
+    private static Validation<BaseError, Channel> ChannelMustNotHavePlayouts(Channel channel) =>
+        Optional(channel.Playouts.Count)
+            .Filter(count => count == 0)
+            .Map(_ => channel)
+            .ToValidation<BaseError>("Channel already has one playout");
+
+    private Validation<BaseError, string> ValidateExternalJsonFile(CreateExternalJsonPlayout request)
+    {
+        if (!_localFileSystem.FileExists(request.ExternalJsonFile))
+        {
+            return BaseError.New("External Json File does not exist!");
+        }
+
+        return request.ExternalJsonFile;
+    }
+
+    private static Validation<BaseError, ProgramSchedulePlayoutType> ValidatePlayoutType(
+        CreateExternalJsonPlayout createExternalJsonPlayout) =>
+        Optional(createExternalJsonPlayout.ProgramSchedulePlayoutType)
+            .Filter(playoutType => playoutType == ProgramSchedulePlayoutType.ExternalJson)
+            .ToValidation<BaseError>("[ProgramSchedulePlayoutType] must be ExternalJson");
+}

ErsatzTV.Application/Playouts/Commands/CreateFloodPlayoutHandler.cs

@@ -10,12 +10,12 @@ using Channel = ErsatzTV.Core.Domain.Channel;
 
 namespace ErsatzTV.Application.Playouts;
 
-public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseError, CreatePlayoutResponse>>
+public class CreateFloodPlayoutHandler : IRequestHandler<CreateFloodPlayout, Either<BaseError, CreatePlayoutResponse>>
 {
     private readonly ChannelWriter<IBackgroundServiceRequest> _channel;
     private readonly IDbContextFactory<TvContext> _dbContextFactory;
 
-    public CreatePlayoutHandler(
+    public CreateFloodPlayoutHandler(
         ChannelWriter<IBackgroundServiceRequest> channel,
         IDbContextFactory<TvContext> dbContextFactory)
     {
@@ -24,12 +24,12 @@ public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseEr
     }
 
     public async Task<Either<BaseError, CreatePlayoutResponse>> Handle(
-        CreatePlayout request,
+        CreateFloodPlayout request,
         CancellationToken cancellationToken)
     {
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, Playout> validation = await Validate(dbContext, request);
-        return await LanguageExtensions.Apply(validation, playout => PersistPlayout(dbContext, playout));
+        return await validation.Apply(playout => PersistPlayout(dbContext, playout));
     }
 
     private async Task<CreatePlayoutResponse> PersistPlayout(TvContext dbContext, Playout playout)
@@ -41,7 +41,7 @@ public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseEr
         return new CreatePlayoutResponse(playout.Id);
     }
 
-    private static async Task<Validation<BaseError, Playout>> Validate(TvContext dbContext, CreatePlayout request) =>
+    private static async Task<Validation<BaseError, Playout>> Validate(TvContext dbContext, CreateFloodPlayout request) =>
         (await ValidateChannel(dbContext, request), await ValidateProgramSchedule(dbContext, request),
             ValidatePlayoutType(request))
         .Apply(
@@ -54,10 +54,10 @@ public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseEr
 
     private static Task<Validation<BaseError, Channel>> ValidateChannel(
         TvContext dbContext,
-        CreatePlayout createPlayout) =>
+        CreateFloodPlayout createFloodPlayout) =>
         dbContext.Channels
             .Include(c => c.Playouts)
-            .SelectOneAsync(c => c.Id, c => c.Id == createPlayout.ChannelId)
+            .SelectOneAsync(c => c.Id, c => c.Id == createFloodPlayout.ChannelId)
             .Map(o => o.ToValidation<BaseError>("Channel does not exist"))
             .BindT(ChannelMustNotHavePlayouts);
 
@@ -69,10 +69,10 @@ public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseEr
 
     private static Task<Validation<BaseError, ProgramSchedule>> ValidateProgramSchedule(
         TvContext dbContext,
-        CreatePlayout createPlayout) =>
+        CreateFloodPlayout createFloodPlayout) =>
         dbContext.ProgramSchedules
             .Include(ps => ps.Items)
-            .SelectOneAsync(ps => ps.Id, ps => ps.Id == createPlayout.ProgramScheduleId)
+            .SelectOneAsync(ps => ps.Id, ps => ps.Id == createFloodPlayout.ProgramScheduleId)
             .Map(o => o.ToValidation<BaseError>("Program schedule does not exist"))
             .BindT(ProgramScheduleMustHaveItems);
 
@@ -83,8 +83,8 @@ public class CreatePlayoutHandler : IRequestHandler<CreatePlayout, Either<BaseEr
             .ToValidation<BaseError>("Program schedule must have items");
 
     private static Validation<BaseError, ProgramSchedulePlayoutType> ValidatePlayoutType(
-        CreatePlayout createPlayout) =>
-        Optional(createPlayout.ProgramSchedulePlayoutType)
+        CreateFloodPlayout createFloodPlayout) =>
+        Optional(createFloodPlayout.ProgramSchedulePlayoutType)
             .Filter(playoutType => playoutType != ProgramSchedulePlayoutType.None)
             .ToValidation<BaseError>("[ProgramSchedulePlayoutType] must not be None");
 }

ErsatzTV.Application/Playouts/Commands/CreatePlayout.cs

@@ -3,7 +3,11 @@ using ErsatzTV.Core.Domain;
 
 namespace ErsatzTV.Application.Playouts;
 
-public record CreatePlayout(
-    int ChannelId,
-    int ProgramScheduleId,
-    ProgramSchedulePlayoutType ProgramSchedulePlayoutType) : IRequest<Either<BaseError, CreatePlayoutResponse>>;
+public record CreatePlayout(int ChannelId, ProgramSchedulePlayoutType ProgramSchedulePlayoutType)
+    : IRequest<Either<BaseError, CreatePlayoutResponse>>;
+
+public record CreateFloodPlayout(int ChannelId, int ProgramScheduleId)
+    : CreatePlayout(ChannelId, ProgramSchedulePlayoutType.Flood);
+
+public record CreateExternalJsonPlayout(int ChannelId, string ExternalJsonFile)
+    : CreatePlayout(ChannelId, ProgramSchedulePlayoutType.ExternalJson);

ErsatzTV.Application/Playouts/Commands/UpdateExternalJsonPlayout.cs

@@ -0,0 +1,6 @@
+using ErsatzTV.Core;
+
+namespace ErsatzTV.Application.Playouts;
+
+public record UpdateExternalJsonPlayout(int PlayoutId, string ExternalJsonFile)
+    : IRequest<Either<BaseError, PlayoutNameViewModel>>;

ErsatzTV.Application/Playouts/Commands/UpdateExternalJsonPlayoutHandler.cs

@@ -0,0 +1,54 @@
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Infrastructure.Data;
+using ErsatzTV.Infrastructure.Extensions;
+using Microsoft.EntityFrameworkCore;
+
+namespace ErsatzTV.Application.Playouts;
+
+public class UpdateExternalJsonPlayoutHandler : IRequestHandler<UpdateExternalJsonPlayout, Either<BaseError, PlayoutNameViewModel>>
+{
+    private readonly IDbContextFactory<TvContext> _dbContextFactory;
+
+    public UpdateExternalJsonPlayoutHandler(IDbContextFactory<TvContext> dbContextFactory) =>
+        _dbContextFactory = dbContextFactory;
+
+    public async Task<Either<BaseError, PlayoutNameViewModel>> Handle(
+        UpdateExternalJsonPlayout request,
+        CancellationToken cancellationToken)
+    {
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
+        Validation<BaseError, Playout> validation = await Validate(dbContext, request);
+        return await validation.Apply(playout => ApplyUpdateRequest(dbContext, request, playout));
+    }
+
+    private static async Task<PlayoutNameViewModel> ApplyUpdateRequest(
+        TvContext dbContext,
+        UpdateExternalJsonPlayout request,
+        Playout playout)
+    {
+        playout.ExternalJsonFile = request.ExternalJsonFile;
+        
+        await dbContext.SaveChangesAsync();
+
+        return new PlayoutNameViewModel(
+            playout.Id,
+            playout.ProgramSchedulePlayoutType,
+            playout.Channel.Name,
+            playout.Channel.Number,
+            playout.ProgramSchedule?.Name ?? string.Empty,
+            playout.ExternalJsonFile,
+            Optional(playout.DailyRebuildTime));
+    }
+
+    private static Task<Validation<BaseError, Playout>> Validate(TvContext dbContext, UpdateExternalJsonPlayout request) =>
+        PlayoutMustExist(dbContext, request);
+
+    private static Task<Validation<BaseError, Playout>> PlayoutMustExist(
+        TvContext dbContext,
+        UpdateExternalJsonPlayout updatePlayout) =>
+        dbContext.Playouts
+            .Include(p => p.Channel)
+            .SelectOneAsync(p => p.Id, p => p.Id == updatePlayout.PlayoutId)
+            .Map(o => o.ToValidation<BaseError>("Playout does not exist."));
+}

ErsatzTV.Application/Playouts/Commands/UpdatePlayoutHandler.cs

@@ -17,7 +17,7 @@ public class UpdatePlayoutHandler : IRequestHandler<UpdatePlayout, Either<BaseEr
         UpdatePlayout request,
         CancellationToken cancellationToken)
     {
-        await using TvContext dbContext = _dbContextFactory.CreateDbContext();
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
         Validation<BaseError, Playout> validation = await Validate(dbContext, request);
         return await validation.Apply(playout => ApplyUpdateRequest(dbContext, request, playout));
     }
@@ -38,9 +38,11 @@ public class UpdatePlayoutHandler : IRequestHandler<UpdatePlayout, Either<BaseEr
 
         return new PlayoutNameViewModel(
             playout.Id,
+            playout.ProgramSchedulePlayoutType,
             playout.Channel.Name,
             playout.Channel.Number,
-            playout.ProgramSchedule.Name,
+            playout.ProgramSchedule?.Name ?? string.Empty,
+            playout.ExternalJsonFile,
             Optional(playout.DailyRebuildTime));
     }
 

ErsatzTV.Application/Playouts/PlayoutNameViewModel.cs

@@ -1,8 +1,12 @@
-namespace ErsatzTV.Application.Playouts;
+using ErsatzTV.Core.Domain;
+
+namespace ErsatzTV.Application.Playouts;
 
 public record PlayoutNameViewModel(
     int PlayoutId,
+    ProgramSchedulePlayoutType PlayoutType,
     string ChannelName,
     string ChannelNumber,
     string ScheduleName,
+    string ExternalJsonFile,
     Option<TimeSpan> DailyRebuildTime);

ErsatzTV.Application/Playouts/Queries/GetAllPlayoutsHandler.cs

@@ -16,13 +16,17 @@ public class GetAllPlayoutsHandler : IRequestHandler<GetAllPlayouts, List<Playou
     {
         await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync(cancellationToken);
         return await dbContext.Playouts
-            .Filter(p => p.Channel != null && p.ProgramSchedule != null)
+            .AsNoTracking()
+            .Include(p => p.ProgramSchedule)
+            .Filter(p => p.Channel != null)
             .Map(
                 p => new PlayoutNameViewModel(
                     p.Id,
+                    p.ProgramSchedulePlayoutType,
                     p.Channel.Name,
                     p.Channel.Number,
-                    p.ProgramSchedule.Name,
+                    p.ProgramScheduleId == null ? string.Empty : p.ProgramSchedule.Name,
+                    p.ExternalJsonFile,
                     Optional(p.DailyRebuildTime)))
             .ToListAsync(cancellationToken);
     }

ErsatzTV.Application/Streaming/Queries/GetPlayoutItemProcessByChannelNumberHandler.cs

@@ -13,6 +13,7 @@ using ErsatzTV.Core.Interfaces.Jellyfin;
 using ErsatzTV.Core.Interfaces.Metadata;
 using ErsatzTV.Core.Interfaces.Plex;
 using ErsatzTV.Core.Interfaces.Repositories;
+using ErsatzTV.Core.Interfaces.Streaming;
 using ErsatzTV.Core.Scheduling;
 using ErsatzTV.Infrastructure.Data;
 using ErsatzTV.Infrastructure.Extensions;
@@ -28,6 +29,7 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
     private readonly IFFmpegProcessService _ffmpegProcessService;
     private readonly IJellyfinPathReplacementService _jellyfinPathReplacementService;
     private readonly ILocalFileSystem _localFileSystem;
+    private readonly IExternalJsonPlayoutItemProvider _externalJsonPlayoutItemProvider;
     private readonly ILogger<GetPlayoutItemProcessByChannelNumberHandler> _logger;
     private readonly IMediaCollectionRepository _mediaCollectionRepository;
     private readonly IMusicVideoCreditsGenerator _musicVideoCreditsGenerator;
@@ -39,6 +41,7 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
         IDbContextFactory<TvContext> dbContextFactory,
         IFFmpegProcessService ffmpegProcessService,
         ILocalFileSystem localFileSystem,
+        IExternalJsonPlayoutItemProvider externalJsonPlayoutItemProvider,
         IPlexPathReplacementService plexPathReplacementService,
         IJellyfinPathReplacementService jellyfinPathReplacementService,
         IEmbyPathReplacementService embyPathReplacementService,
@@ -52,6 +55,7 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
     {
         _ffmpegProcessService = ffmpegProcessService;
         _localFileSystem = localFileSystem;
+        _externalJsonPlayoutItemProvider = externalJsonPlayoutItemProvider;
         _plexPathReplacementService = plexPathReplacementService;
         _jellyfinPathReplacementService = jellyfinPathReplacementService;
         _embyPathReplacementService = embyPathReplacementService;
@@ -140,6 +144,15 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
             .Map(o => o.ToEither<BaseError>(new UnableToLocatePlayoutItem()))
             .BindT(item => ValidatePlayoutItemPath(dbContext, item));
         
+        if (maybePlayoutItem.LeftAsEnumerable().Any(e => e is UnableToLocatePlayoutItem))
+        {
+            maybePlayoutItem = await _externalJsonPlayoutItemProvider.CheckForExternalJson(
+                channel,
+                now,
+                ffmpegPath,
+                ffprobePath);
+        }
+        
         if (maybePlayoutItem.LeftAsEnumerable().Any(e => e is UnableToLocatePlayoutItem))
         {
             maybePlayoutItem = await CheckForFallbackFiller(dbContext, channel, now);
@@ -557,6 +570,4 @@ public class GetPlayoutItemProcessByChannelNumberHandler : FFmpegProcessHandler<
             _ => path
         };
     }
-
-    private sealed record PlayoutItemWithPath(PlayoutItem PlayoutItem, string Path);
 }

ErsatzTV.Core/Domain/Playout.cs

@@ -5,8 +5,9 @@ public class Playout
     public int Id { get; set; }
     public int ChannelId { get; set; }
     public Channel Channel { get; set; }
-    public int ProgramScheduleId { get; set; }
+    public int? ProgramScheduleId { get; set; }
     public ProgramSchedule ProgramSchedule { get; set; }
+    public string ExternalJsonFile { get; set; }
     public List<ProgramScheduleAlternate> ProgramScheduleAlternates { get; set; }
     public ProgramSchedulePlayoutType ProgramSchedulePlayoutType { get; set; }
     public List<PlayoutItem> Items { get; set; }

ErsatzTV.Core/Domain/PlayoutItemWithPath.cs

@@ -0,0 +1,3 @@
+namespace ErsatzTV.Core.Domain;
+
+public sealed record PlayoutItemWithPath(PlayoutItem PlayoutItem, string Path);

ErsatzTV.Core/Domain/ProgramSchedulePlayoutType.cs

@@ -3,6 +3,7 @@
 public enum ProgramSchedulePlayoutType
 {
     None = 0,
-    Flood,
-    Daily
+    Flood = 1,
+
+    ExternalJson = 20
 }

ErsatzTV.Core/Interfaces/Plex/IPlexServerApiClient.cs

@@ -52,13 +52,13 @@ public interface IPlexServerApiClient
         PlexServerAuthToken token);
 
     Task<Either<BaseError, Tuple<MovieMetadata, MediaVersion>>> GetMovieMetadataAndStatistics(
-        PlexLibrary library,
+        int plexMediaSourceId,
         string key,
         PlexConnection connection,
         PlexServerAuthToken token);
 
     Task<Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>>> GetEpisodeMetadataAndStatistics(
-        PlexLibrary library,
+        int plexMediaSourceId,
         string key,
         PlexConnection connection,
         PlexServerAuthToken token);

ErsatzTV.Core/Interfaces/Streaming/IExternalJsonPlayoutItemProvider.cs

@@ -0,0 +1,12 @@
+using ErsatzTV.Core.Domain;
+
+namespace ErsatzTV.Core.Interfaces.Streaming;
+
+public interface IExternalJsonPlayoutItemProvider
+{
+    Task<Either<BaseError, PlayoutItemWithPath>> CheckForExternalJson(
+        Channel channel,
+        DateTimeOffset now,
+        string ffmpegPath,
+        string ffprobePath);
+}

ErsatzTV.Core/Scheduling/PlayoutBuilder.cs

@@ -43,6 +43,16 @@ public class PlayoutBuilder : IPlayoutBuilder
 
     public async Task<Playout> Build(Playout playout, PlayoutBuildMode mode, CancellationToken cancellationToken)
     {
+        if (playout.ProgramSchedulePlayoutType is ProgramSchedulePlayoutType.ExternalJson)
+        {
+            _logger.LogDebug(
+                "Skipping external json playout build on channel {Number} - {Name}",
+                playout.Channel.Number,
+                playout.Channel.Name);
+
+            return playout;
+        }
+        
         foreach (PlayoutParameters parameters in await Validate(playout))
         {
             // for testing purposes

ErsatzTV.Core/Streaming/ExternalJsonChannel.cs

@@ -0,0 +1,11 @@
+using Newtonsoft.Json;
+
+namespace ErsatzTV.Core.Streaming;
+
+public class ExternalJsonChannel
+{
+    [JsonProperty("startTime")]
+    public string StartTime { get; set; }
+
+    public ExternalJsonProgram[] Programs { get; set; }
+}

ErsatzTV.Core/Streaming/ExternalJsonProgram.cs

@@ -0,0 +1,39 @@
+using Newtonsoft.Json;
+
+namespace ErsatzTV.Core.Streaming;
+
+public class ExternalJsonProgram
+{
+    [JsonProperty("title")]
+    public string Title { get; set; }
+    
+    [JsonProperty("showTitle")]
+    public string ShowTitle { get; set; }
+    
+    [JsonProperty("season")]
+    public int Season { get; set; }
+    
+    [JsonProperty("episode")]
+    public int Episode { get; set; }
+
+    [JsonProperty("key")]
+    public string Key { get; set; }
+    
+    [JsonProperty("ratingKey")]
+    public string RatingKey { get; set; }
+    
+    [JsonProperty("type")]
+    public string Type { get; set; }
+    
+    [JsonProperty("duration")]
+    public int Duration { get; set; }
+    
+    [JsonProperty("plexFile")]
+    public string PlexFile { get; set; }
+    
+    [JsonProperty("file")]
+    public string File { get; set; }
+    
+    [JsonProperty("serverKey")]
+    public string ServerKey { get; set; }
+}

ErsatzTV.Infrastructure.Sqlite/Migrations/20240108202019_AddExternalJsonPlayout.cs

@@ -0,0 +1,46 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ErsatzTV.Infrastructure.Sqlite.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddExternalJsonPlayout : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.AlterColumn<int>(
+                name: "ProgramScheduleId",
+                table: "Playout",
+                type: "INTEGER",
+                nullable: true,
+                oldClrType: typeof(int),
+                oldType: "INTEGER");
+
+            migrationBuilder.AddColumn<string>(
+                name: "ExternalJsonFile",
+                table: "Playout",
+                type: "TEXT",
+                nullable: true);
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropColumn(
+                name: "ExternalJsonFile",
+                table: "Playout");
+
+            migrationBuilder.AlterColumn<int>(
+                name: "ProgramScheduleId",
+                table: "Playout",
+                type: "INTEGER",
+                nullable: false,
+                defaultValue: 0,
+                oldClrType: typeof(int),
+                oldType: "INTEGER",
+                oldNullable: true);
+        }
+    }
+}

ErsatzTV.Infrastructure.Sqlite/Migrations/TvContextModelSnapshot.cs

@@ -1411,7 +1411,10 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                     b.Property<TimeSpan?>("DailyRebuildTime")
                         .HasColumnType("TEXT");
 
-                    b.Property<int>("ProgramScheduleId")
+                    b.Property<string>("ExternalJsonFile")
+                        .HasColumnType("TEXT");
+
+                    b.Property<int?>("ProgramScheduleId")
                         .HasColumnType("INTEGER");
 
                     b.Property<int>("ProgramSchedulePlayoutType")
@@ -3321,8 +3324,7 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                     b.HasOne("ErsatzTV.Core.Domain.ProgramSchedule", "ProgramSchedule")
                         .WithMany("Playouts")
                         .HasForeignKey("ProgramScheduleId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .OnDelete(DeleteBehavior.Cascade);
 
                     b.OwnsOne("ErsatzTV.Core.Domain.PlayoutAnchor", "Anchor", b1 =>
                         {
@@ -3590,8 +3592,7 @@ namespace ErsatzTV.Infrastructure.Sqlite.Migrations
                     b.HasOne("ErsatzTV.Core.Domain.ProgramSchedule", "ProgramSchedule")
                         .WithMany("Items")
                         .HasForeignKey("ProgramScheduleId")
-                        .OnDelete(DeleteBehavior.Cascade)
-                        .IsRequired();
+                        .OnDelete(DeleteBehavior.Cascade);
 
                     b.HasOne("ErsatzTV.Core.Domain.SmartCollection", "SmartCollection")
                         .WithMany()

ErsatzTV.Infrastructure/Data/Configurations/ProgramScheduleConfiguration.cs

@@ -16,7 +16,8 @@ public class ProgramScheduleConfiguration : IEntityTypeConfiguration<ProgramSche
         builder.HasMany(ps => ps.Items)
             .WithOne(i => i.ProgramSchedule)
             .HasForeignKey(i => i.ProgramScheduleId)
-            .OnDelete(DeleteBehavior.Cascade);
+            .OnDelete(DeleteBehavior.Cascade)
+            .IsRequired(false);
 
         builder.HasMany(ps => ps.Playouts)
             .WithOne(p => p.ProgramSchedule)

ErsatzTV.Infrastructure/Plex/PlexServerApiClient.cs

@@ -211,7 +211,7 @@ public class PlexServerApiClient : IPlexServerApiClient
     }
 
     public async Task<Either<BaseError, Tuple<MovieMetadata, MediaVersion>>> GetMovieMetadataAndStatistics(
-        PlexLibrary library,
+        int plexMediaSourceId,
         string key,
         PlexConnection connection,
         PlexServerAuthToken token)
@@ -231,7 +231,7 @@ public class PlexServerApiClient : IPlexServerApiClient
                     Option<MediaVersion> maybeVersion = ProjectToMediaVersion(response.Metadata);
                     return maybeVersion.Match<Either<BaseError, Tuple<MovieMetadata, MediaVersion>>>(
                         version => Tuple(
-                            ProjectToMovieMetadata(version, response.Metadata, library.MediaSourceId),
+                            ProjectToMovieMetadata(version, response.Metadata, plexMediaSourceId),
                             version),
                         () => BaseError.New("Unable to locate metadata"));
                 },
@@ -244,7 +244,7 @@ public class PlexServerApiClient : IPlexServerApiClient
     }
 
     public async Task<Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>>> GetEpisodeMetadataAndStatistics(
-        PlexLibrary library,
+        int plexMediaSourceId,
         string key,
         PlexConnection connection,
         PlexServerAuthToken token)
@@ -264,7 +264,7 @@ public class PlexServerApiClient : IPlexServerApiClient
                     Option<MediaVersion> maybeVersion = ProjectToMediaVersion(response.Metadata);
                     return maybeVersion.Match<Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>>>(
                         version => Tuple(
-                            ProjectToEpisodeMetadata(version, response.Metadata, library.MediaSourceId),
+                            ProjectToEpisodeMetadata(version, response.Metadata, plexMediaSourceId),
                             version),
                         () => BaseError.New("Unable to locate metadata"));
                 },

ErsatzTV.Scanner/Application/Streaming/ExternalJsonPlayoutItemProvider.cs

@@ -0,0 +1,302 @@
+using System.Globalization;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Domain.Filler;
+using ErsatzTV.Core.Errors;
+using ErsatzTV.Core.Interfaces.Metadata;
+using ErsatzTV.Core.Interfaces.Plex;
+using ErsatzTV.Core.Interfaces.Streaming;
+using ErsatzTV.Core.Plex;
+using ErsatzTV.Core.Streaming;
+using ErsatzTV.Infrastructure.Data;
+using ErsatzTV.Infrastructure.Extensions;
+using ErsatzTV.Scanner.Core.Interfaces.Metadata;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Newtonsoft.Json;
+
+namespace ErsatzTV.Scanner.Application.Streaming;
+
+public class ExternalJsonPlayoutItemProvider : IExternalJsonPlayoutItemProvider
+{
+    private readonly IDbContextFactory<TvContext> _dbContextFactory;
+    private readonly ILocalFileSystem _localFileSystem;
+    private readonly IPlexPathReplacementService _plexPathReplacementService;
+    private readonly IPlexServerApiClient _plexServerApiClient;
+    private readonly IPlexSecretStore _plexSecretStore;
+    private readonly ILocalStatisticsProvider _localStatisticsProvider;
+    private readonly ILogger<ExternalJsonPlayoutItemProvider> _logger;
+
+    public ExternalJsonPlayoutItemProvider(
+        IDbContextFactory<TvContext> dbContextFactory,
+        ILocalFileSystem localFileSystem,
+        IPlexPathReplacementService plexPathReplacementService,
+        IPlexServerApiClient plexServerApiClient,
+        IPlexSecretStore plexSecretStore,
+        ILocalStatisticsProvider localStatisticsProvider,
+        ILogger<ExternalJsonPlayoutItemProvider> logger)
+    {
+        _dbContextFactory = dbContextFactory;
+        _localFileSystem = localFileSystem;
+        _plexPathReplacementService = plexPathReplacementService;
+        _plexServerApiClient = plexServerApiClient;
+        _plexSecretStore = plexSecretStore;
+        _localStatisticsProvider = localStatisticsProvider;
+        _logger = logger;
+    }
+
+    public async Task<Either<BaseError, PlayoutItemWithPath>> CheckForExternalJson(
+        Channel channel,
+        DateTimeOffset now,
+        string ffmpegPath,
+        string ffprobePath)
+    {
+        await using TvContext dbContext = await _dbContextFactory.CreateDbContextAsync();
+        
+        Option<Playout> maybePlayout = await dbContext.Playouts
+            .AsNoTracking()
+            .SelectOneAsync(p => p.ChannelId, p => p.ChannelId == channel.Id);
+
+        foreach (Playout playout in maybePlayout)
+        {
+            // playout must be external json
+            if (playout.ProgramSchedulePlayoutType == ProgramSchedulePlayoutType.ExternalJson)
+            {
+                // json file must exist
+                if (_localFileSystem.FileExists(playout.ExternalJsonFile))
+                {
+                    return await GetExternalJsonPlayoutItem(dbContext, playout, now, ffmpegPath, ffprobePath);
+                }
+
+                _logger.LogWarning(
+                    "Unable to locate external json file {File} for channel {Number} - {Name}",
+                    playout.ExternalJsonFile,
+                    channel.Number,
+                    channel.Name);
+            }
+        }
+
+        return new UnableToLocatePlayoutItem();
+    }
+    
+    private async Task<Either<BaseError, PlayoutItemWithPath>> GetExternalJsonPlayoutItem(
+        TvContext dbContext,
+        Playout playout,
+        DateTimeOffset now,
+        string ffmpegPath,
+        string ffprobePath)
+    {
+        Option<ExternalJsonChannel> maybeChannel = JsonConvert.DeserializeObject<ExternalJsonChannel>(
+            await File.ReadAllTextAsync(playout.ExternalJsonFile));
+
+        // must deserialize channel from json
+        foreach (ExternalJsonChannel channel in maybeChannel)
+        {
+            // TODO: null start time should log and throw
+            
+            DateTimeOffset startTime = DateTimeOffset.Parse(
+                channel.StartTime ?? string.Empty,
+                CultureInfo.InvariantCulture,
+                DateTimeStyles.AssumeUniversal).ToLocalTime();
+
+            //_logger.LogDebug("external json start time: {StartTime}", startTime);
+
+            foreach (ExternalJsonProgram program in channel.Programs)
+            {
+                int milliseconds = program.Duration;
+                DateTimeOffset nextStart = startTime + TimeSpan.FromMilliseconds(milliseconds);
+                if (nextStart > now)
+                {
+                    //_logger.LogDebug("should play program {@Program}", program);
+                    return await BuildPlayoutItem(dbContext, startTime, program, ffmpegPath, ffprobePath);
+                }
+
+                startTime = nextStart;
+            }
+        }
+
+        return new UnableToLocatePlayoutItem();
+    }
+
+    private async Task<Either<BaseError, PlayoutItemWithPath>> BuildPlayoutItem(
+        TvContext dbContext,
+        DateTimeOffset startTime,
+        ExternalJsonProgram program,
+        string ffmpegPath,
+        string ffprobePath)
+    {
+        // find any library path from the appropriate plex server
+        List<LibraryPath> maybeLibraryPath = await dbContext.LibraryPaths
+            .Filter(lp => ((PlexMediaSource)((PlexLibrary)lp.Library).MediaSource).ServerName == program.ServerKey)
+            .OrderBy(lp => lp.Id)
+            .Take(1)
+            .ToListAsync();
+
+        foreach (LibraryPath libraryPath in maybeLibraryPath.HeadOrNone())
+        {
+            string localPath = await _plexPathReplacementService.GetReplacementPlexPath(
+                libraryPath.Id,
+                program.File);
+
+            if (_localFileSystem.FileExists(localPath))
+            {
+                return await StreamLocally(startTime, program, ffmpegPath, ffprobePath, localPath);
+            }
+
+            return await StreamRemotely(dbContext, startTime, program);
+        }
+        
+        return new UnableToLocatePlayoutItem();
+    }
+
+    private async Task<Either<BaseError, PlayoutItemWithPath>> StreamLocally(
+        DateTimeOffset startTime,
+        ExternalJsonProgram program,
+        string ffmpegPath,
+        string ffprobePath,
+        string localPath)
+    {
+        // ffprobe on demand
+        Either<BaseError, MediaVersion> maybeMediaVersion =
+            await _localStatisticsProvider.GetStatistics(ffmpegPath, ffprobePath, localPath);
+
+        foreach (MediaVersion mediaVersion in maybeMediaVersion.RightToSeq())
+        {
+            // build playout item
+            var episode = new Episode
+            {
+                MediaVersions = [mediaVersion],
+                EpisodeMetadata =
+                [
+                    new EpisodeMetadata
+                    {
+                        EpisodeNumber = program.Episode,
+                        Title = program.Title,
+                    },
+                ],
+                Season = new Season
+                {
+                    SeasonNumber = program.Season,
+                    Show = new Show
+                    {
+                        ShowMetadata =
+                        [
+                            new ShowMetadata
+                            {
+                                Title = program.ShowTitle
+                            }
+                        ]
+                    }
+                }
+            };
+
+            return new PlayoutItemWithPath(GetPlayoutItem(startTime, episode, program), localPath);
+        }
+
+        return new UnableToLocatePlayoutItem();
+    }
+    
+    private async Task<Either<BaseError, PlayoutItemWithPath>> StreamRemotely(
+        TvContext dbContext,
+        DateTimeOffset startTime,
+        ExternalJsonProgram program)
+    {
+        Option<PlexMediaSource> maybeServer = await dbContext.PlexMediaSources
+            .Include(pms => pms.Connections)
+            .SelectOneAsync(pms => pms.ServerName, pms => pms.ServerName == program.ServerKey);
+        
+        foreach (PlexMediaSource server in maybeServer)
+        {
+            Option<PlexConnection> maybeConnection = server.Connections.SingleOrDefault(c => c.IsActive);
+            foreach (PlexConnection connection in maybeConnection)
+            {
+                Option<PlexServerAuthToken> maybeToken =
+                    await _plexSecretStore.GetServerAuthToken(server.ClientIdentifier);
+
+                foreach (PlexServerAuthToken token in maybeToken)
+                {
+                    MediaItem mediaItem = program.Type switch
+                    {
+                        "episode" => await GetPlexEpisode(server, connection, token, program),
+                        _ => await GetPlexMovie(server, connection, token, program)
+                    };
+
+                    return new PlayoutItemWithPath(
+                        GetPlayoutItem(startTime, mediaItem, program),
+                        $"http://localhost:{Settings.ListenPort}/media/plex/{server.Id}/{program.PlexFile}");
+                }
+            }
+        }
+
+        // TODO: log errors?
+        return new UnableToLocatePlayoutItem();
+    }
+
+    private async Task<MediaItem> GetPlexEpisode(
+        PlexMediaSource plexMediaSource,
+        PlexConnection connection,
+        PlexServerAuthToken token,
+        ExternalJsonProgram program)
+    {
+        Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>> maybeStatistics =
+            await _plexServerApiClient.GetEpisodeMetadataAndStatistics(
+                plexMediaSource.Id,
+                program.RatingKey,
+                connection,
+                token);
+
+        foreach (Tuple<EpisodeMetadata, MediaVersion> result in maybeStatistics.RightToSeq())
+        {
+            return new PlexEpisode
+            {
+                EpisodeMetadata = [result.Item1],
+                MediaVersions = [result.Item2]
+            };
+        }
+
+        throw new NotSupportedException();
+    }
+
+    private async Task<MediaItem> GetPlexMovie(
+        PlexMediaSource plexMediaSource,
+        PlexConnection connection,
+        PlexServerAuthToken token,
+        ExternalJsonProgram program)
+    {
+        Either<BaseError, Tuple<MovieMetadata, MediaVersion>> maybeStatistics =
+            await _plexServerApiClient.GetMovieMetadataAndStatistics(
+                plexMediaSource.Id,
+                program.RatingKey,
+                connection,
+                token);
+
+        foreach (Tuple<MovieMetadata, MediaVersion> result in maybeStatistics.RightToSeq())
+        {
+            return new PlexMovie
+            {
+                MovieMetadata = [result.Item1],
+                MediaVersions = [result.Item2]
+            };
+        }
+
+        throw new NotSupportedException();
+    }
+
+    private static PlayoutItem GetPlayoutItem(
+        DateTimeOffset startTime,
+        MediaItem mediaItem,
+        ExternalJsonProgram program) =>
+        new()
+        {
+            Start = startTime.UtcDateTime,
+            Finish = startTime.AddMilliseconds(program.Duration).UtcDateTime,
+            FillerKind = FillerKind.None,
+            ChapterTitle = null,
+            GuideFinish = null,
+            GuideGroup = 0,
+            CustomTitle = null,
+            InPoint = TimeSpan.Zero,
+            OutPoint = TimeSpan.FromMilliseconds(program.Duration),
+            MediaItem = mediaItem
+        };
+}

ErsatzTV.Scanner/Core/Interfaces/Metadata/ILocalStatisticsProvider.cs

@@ -5,13 +5,9 @@ namespace ErsatzTV.Scanner.Core.Interfaces.Metadata;
 
 public interface ILocalStatisticsProvider
 {
-    Task<Either<BaseError, bool>> RefreshStatistics(string ffmpegPath, string ffprobePath, MediaItem mediaItem);
+    Task<Either<BaseError, MediaVersion>> GetStatistics(string ffmpegPath, string ffprobePath, string path);
     
-    Task<Either<BaseError, bool>> RefreshStatistics(
-        string ffmpegPath,
-        string ffprobePath,
-        MediaItem mediaItem,
-        string mediaItemPath);
+    Task<Either<BaseError, bool>> RefreshStatistics(string ffmpegPath, string ffprobePath, MediaItem mediaItem);
 
     Task<Either<BaseError, Dictionary<string, string>>> GetSongTags(string ffprobePath, MediaItem mediaItem);
 }

ErsatzTV.Scanner/Core/Metadata/LocalFolderScanner.cs

@@ -32,7 +32,7 @@ public abstract class LocalFolderScanner
 
     public static readonly ImmutableHashSet<string> ImageFileExtensions = new[]
     {
-        "jpg", "jpeg", "png", "gif", "tbn"
+        "jpg", "jpeg", "png", "gif", "tbn", "webp"
     }.ToImmutableHashSet(StringComparer.OrdinalIgnoreCase);
 
     public static readonly ImmutableHashSet<string> ExtraFiles = new[]

ErsatzTV.Scanner/Core/Metadata/LocalStatisticsProvider.cs

@@ -36,46 +36,23 @@ public class LocalStatisticsProvider : ILocalStatisticsProvider
         _logger = logger;
     }
 
-    public async Task<Either<BaseError, bool>> RefreshStatistics(
-        string ffmpegPath,
-        string ffprobePath,
-        MediaItem mediaItem)
-    {
-        try
-        {
-            string filePath = mediaItem.GetHeadVersion().MediaFiles.Head().Path;
-            return await RefreshStatistics(ffmpegPath, ffprobePath, mediaItem, filePath);
-        }
-        catch (Exception ex)
+    public async Task<Either<BaseError, MediaVersion>> GetStatistics(string ffmpegPath, string ffprobePath, string path)
     {
-            _logger.LogWarning(ex, "Failed to refresh statistics for media item {Id}", mediaItem.Id);
-            _client.Notify(ex);
-            return BaseError.New(ex.Message);
-        }
+        Either<BaseError, FFprobe> maybeProbe = await GetProbeOutput(ffprobePath, path);
+        return maybeProbe.Match(
+            ffprobe => ProjectToMediaVersion(path, ffprobe),
+            Left<BaseError, MediaVersion>);
     }
 
     public async Task<Either<BaseError, bool>> RefreshStatistics(
         string ffmpegPath,
         string ffprobePath,
-        MediaItem mediaItem,
-        string mediaItemPath)
+        MediaItem mediaItem)
     {
         try
         {
-            Either<BaseError, FFprobe> maybeProbe = await GetProbeOutput(ffprobePath, mediaItemPath);
-            return await maybeProbe.Match(
-                async ffprobe =>
-                {
-                    MediaVersion version = ProjectToMediaVersion(mediaItemPath, ffprobe);
-                    if (version.Duration.TotalSeconds < 1)
-                    {
-                        await AnalyzeDuration(ffmpegPath, mediaItemPath, version);
-                    }
-
-                    bool result = await ApplyVersionUpdate(mediaItem, version, mediaItemPath);
-                    return Right<BaseError, bool>(result);
-                },
-                error => Task.FromResult(Left<BaseError, bool>(error)));
+            string filePath = mediaItem.GetHeadVersion().MediaFiles.Head().Path;
+            return await RefreshStatistics(ffmpegPath, ffprobePath, mediaItem, filePath);
         }
         catch (Exception ex)
         {
@@ -201,6 +178,37 @@ public class LocalStatisticsProvider : ILocalStatisticsProvider
         return BaseError.New("BUG - this should never happen");
     }
 
+    private async Task<Either<BaseError, bool>> RefreshStatistics(
+        string ffmpegPath,
+        string ffprobePath,
+        MediaItem mediaItem,
+        string mediaItemPath)
+    {
+        try
+        {
+            Either<BaseError, FFprobe> maybeProbe = await GetProbeOutput(ffprobePath, mediaItemPath);
+            return await maybeProbe.Match(
+                async ffprobe =>
+                {
+                    MediaVersion version = ProjectToMediaVersion(mediaItemPath, ffprobe);
+                    if (version.Duration.TotalSeconds < 1)
+                    {
+                        await AnalyzeDuration(ffmpegPath, mediaItemPath, version);
+                    }
+
+                    bool result = await ApplyVersionUpdate(mediaItem, version, mediaItemPath);
+                    return Right<BaseError, bool>(result);
+                },
+                error => Task.FromResult(Left<BaseError, bool>(error)));
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Failed to refresh statistics for media item {Id}", mediaItem.Id);
+            _client.Notify(ex);
+            return BaseError.New(ex.Message);
+        }
+    }
+
     private async Task<bool> ApplyVersionUpdate(MediaItem mediaItem, MediaVersion version, string filePath)
     {
         MediaVersion mediaItemVersion = mediaItem.GetHeadVersion();

ErsatzTV.Scanner/Core/Metadata/OtherVideoFolderScanner.cs

@@ -150,6 +150,7 @@ public class OtherVideoFolderScanner : LocalFolderScanner, IOtherVideoFolderScan
                         .GetOrAdd(libraryPath, file)
                         .BindT(video => UpdateStatistics(video, ffmpegPath, ffprobePath))
                         .BindT(UpdateMetadata)
+                        .BindT(video => UpdateThumbnail(video, cancellationToken))
                         .BindT(UpdateSubtitles)
                         .BindT(FlagNormal);
 
@@ -168,7 +169,7 @@ public class OtherVideoFolderScanner : LocalFolderScanner, IOtherVideoFolderScan
                                     libraryPath.LibraryId,
                                     null,
                                     null,
-                                    new[] { result.Item.Id },
+                                    [result.Item.Id],
                                     Array.Empty<int>()),
                                 cancellationToken);
                         }
@@ -286,4 +287,37 @@ public class OtherVideoFolderScanner : LocalFolderScanner, IOtherVideoFolderScan
             return BaseError.New(ex.ToString());
         }
     }
+    
+    private async Task<Either<BaseError, MediaItemScanResult<OtherVideo>>> UpdateThumbnail(
+        MediaItemScanResult<OtherVideo> result,
+        CancellationToken cancellationToken)
+    {
+        try
+        {
+            OtherVideo otherVideo = result.Item;
+
+            Option<string> maybeThumbnail = LocateThumbnail(otherVideo);
+            foreach (string thumbnailFile in maybeThumbnail)
+            {
+                OtherVideoMetadata metadata = otherVideo.OtherVideoMetadata.Head();
+                await RefreshArtwork(thumbnailFile, metadata, ArtworkKind.Thumbnail, None, None, cancellationToken);
+            }
+
+            return result;
+        }
+        catch (Exception ex)
+        {
+            _client.Notify(ex);
+            return BaseError.New(ex.ToString());
+        }
+    }
+    
+    private Option<string> LocateThumbnail(OtherVideo otherVideo)
+    {
+        string path = otherVideo.MediaVersions.Head().MediaFiles.Head().Path;
+        return ImageFileExtensions
+            .Map(ext => Path.ChangeExtension(path, ext))
+            .Filter(f => _localFileSystem.FileExists(f))
+            .HeadOrNone();
+    }
 }

ErsatzTV.Scanner/Core/Plex/PlexMovieLibraryScanner.cs

@@ -125,7 +125,7 @@ public class PlexMovieLibraryScanner :
 
         Either<BaseError, MediaVersion> maybeVersion =
             await _plexServerApiClient.GetMovieMetadataAndStatistics(
-                    library,
+                    library.MediaSourceId,
                     incoming.Key.Split("/").Last(),
                     connectionParameters.Connection,
                     connectionParameters.Token)
@@ -149,7 +149,7 @@ public class PlexMovieLibraryScanner :
 
         Either<BaseError, Tuple<MovieMetadata, MediaVersion>> maybeResult =
             await _plexServerApiClient.GetMovieMetadataAndStatistics(
-                library,
+                library.MediaSourceId,
                 incoming.Key.Split("/").Last(),
                 connectionParameters.Connection,
                 connectionParameters.Token);

ErsatzTV.Scanner/Core/Plex/PlexTelevisionLibraryScanner.cs

@@ -237,7 +237,7 @@ public class PlexTelevisionLibraryScanner :
         {
             Either<BaseError, EpisodeMetadata> maybeMetadata =
                 await _plexServerApiClient.GetEpisodeMetadataAndStatistics(
-                        library,
+                        library.MediaSourceId,
                         incoming.Key.Split("/").Last(),
                         connectionParameters.Connection,
                         connectionParameters.Token)
@@ -264,7 +264,7 @@ public class PlexTelevisionLibraryScanner :
 
         Either<BaseError, MediaVersion> maybeVersion =
             await _plexServerApiClient.GetEpisodeMetadataAndStatistics(
-                    library,
+                    library.MediaSourceId,
                     incoming.Key.Split("/").Last(),
                     connectionParameters.Connection,
                     connectionParameters.Token)
@@ -288,7 +288,7 @@ public class PlexTelevisionLibraryScanner :
 
         Either<BaseError, Tuple<EpisodeMetadata, MediaVersion>> maybeResult =
             await _plexServerApiClient.GetEpisodeMetadataAndStatistics(
-                library,
+                library.MediaSourceId,
                 incoming.Key.Split("/").Last(),
                 connectionParameters.Connection,
                 connectionParameters.Token);

ErsatzTV.Scanner/Program.cs

@@ -13,6 +13,7 @@ using ErsatzTV.Core.Interfaces.Plex;
 using ErsatzTV.Core.Interfaces.Repositories;
 using ErsatzTV.Core.Interfaces.Repositories.Caching;
 using ErsatzTV.Core.Interfaces.Search;
+using ErsatzTV.Core.Interfaces.Streaming;
 using ErsatzTV.Core.Jellyfin;
 using ErsatzTV.Core.Metadata;
 using ErsatzTV.Core.Plex;
@@ -27,6 +28,7 @@ using ErsatzTV.Infrastructure.Plex;
 using ErsatzTV.Infrastructure.Runtime;
 using ErsatzTV.Infrastructure.Search;
 using ErsatzTV.Infrastructure.Sqlite.Data;
+using ErsatzTV.Scanner.Application.Streaming;
 using ErsatzTV.Scanner.Core.Emby;
 using ErsatzTV.Scanner.Core.FFmpeg;
 using ErsatzTV.Scanner.Core.Interfaces.FFmpeg;

ErsatzTV/Pages/PlayoutEditor.razor

@@ -1,4 +1,5 @@
 @page "/playouts/add"
+@page "/playouts/add/{kind}"
 @using ErsatzTV.Application.Channels
 @using ErsatzTV.Application.ProgramSchedules
 @implements IDisposable
@@ -8,9 +9,17 @@
 @inject IMediator _mediator
 
 <MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="pt-8">
+    <MudText Typo="Typo.h4" Class="mb-4">
+        @if (Kind == "externaljson")
+        {
+            <span>Add External Json Playout</span>
+        }
+        else
+        {
+            <span>Add Playout</span>
+        }
+    </MudText>
     <div style="max-width: 400px;">
-        <MudText Typo="Typo.h4" Class="mb-4">Add Playout</MudText>
-
         <EditForm EditContext="_editContext" OnSubmit="@HandleSubmitAsync">
             <FluentValidationValidator/>
             <MudCard>
@@ -26,6 +35,12 @@
                             </MudSelectItem>
                         }
                     </MudSelect>
+                    @if (Kind == "externaljson")
+                    {
+                        <MudTextField Label="External Json File" @bind-Value="_model.ExternalJsonFile" For="@(() => _model.ExternalJsonFile)" />
+                    }
+                    else
+                    {
                         <MudSelect Class="mt-3"
                                    T="ProgramScheduleViewModel"
                                    Label="Schedule"
@@ -35,6 +50,7 @@
                                 <MudSelectItem Value="@schedule">@schedule.Name</MudSelectItem>
                             }
                         </MudSelect>
+                    }
                 </MudCardContent>
                 <MudCardActions>
                     <MudButton ButtonType="ButtonType.Submit" Variant="Variant.Filled" Color="Color.Primary">
@@ -50,12 +66,15 @@
     private readonly CancellationTokenSource _cts = new();
 
     private readonly PlayoutEditViewModel _model = new();
-    private List<ChannelViewModel> _channels = new();
-    private List<ProgramScheduleViewModel> _programSchedules = new();
+    private List<ChannelViewModel> _channels = [];
+    private List<ProgramScheduleViewModel> _programSchedules = [];
 
     private EditContext _editContext;
     private ValidationMessageStore _messageStore;
     
+    [Parameter]
+    public string Kind { get; set; }
+
     public void Dispose()
     {
         _cts.Cancel();
@@ -64,11 +83,17 @@
 
     protected override async Task OnParametersSetAsync()
     {
+        _model.Kind = Kind;
+        
         _channels = await _mediator.Send(new GetAllChannels(), _cts.Token)
             .Map(list => list.OrderBy(vm => decimal.Parse(vm.Number)).ToList());
+
+        if (Kind != "externaljson")
+        {
             _programSchedules = await _mediator.Send(new GetAllProgramSchedules(), _cts.Token)
                 .Map(list => list.OrderBy(vm => vm.Name).ToList());
         }
+    }
 
     protected override void OnInitialized()
     {

ErsatzTV/Pages/Playouts.razor

@@ -9,9 +9,14 @@
 @inject IEntityLocker EntityLocker;
 
 <MudContainer MaxWidth="MaxWidth.ExtraLarge" Class="pt-8">
+    <div>
         <MudButton Variant="Variant.Filled" Color="Color.Primary" Link="playouts/add">
             Add Playout
         </MudButton>
+        <MudButton Class="ml-3" Variant="Variant.Filled" Color="Color.Primary" Link="playouts/add/externaljson">
+            Add External Json Playout
+        </MudButton>
+    </div>
     <MudTable Hover="true"
               Dense="true"
               Class="mt-4"
@@ -53,6 +58,8 @@
                             <MudProgressCircular Color="Color.Primary" Size="Size.Small" Indeterminate="true"/>
                         }
                     </div>
+                    @if (context.PlayoutType == ProgramSchedulePlayoutType.Flood)
+                    {
                         <MudTooltip Text="Edit Alternate Schedules">
                             <MudIconButton Icon="@Icons.Material.Filled.EditCalendar"
                                            Disabled="@EntityLocker.IsPlayoutLocked(context.PlayoutId)"
@@ -71,6 +78,24 @@
                                            OnClick="@(_ => ScheduleReset(context))">
                             </MudIconButton>
                         </MudTooltip>
+                    }
+                    else if (context.PlayoutType == ProgramSchedulePlayoutType.ExternalJson)
+                    {
+                        <MudTooltip Text="Edit External Json File">
+                            <MudIconButton Icon="@Icons.Material.Filled.Edit"
+                                           Disabled="@EntityLocker.IsPlayoutLocked(context.PlayoutId)"
+                                           OnClick="@(_ => EditExternalJsonFile(context))">
+                            </MudIconButton>
+                        </MudTooltip>
+                        <div style="width: 48px"></div>
+                        <div style="width: 48px"></div>
+                    }
+                    else
+                    {
+                        <div style="width: 48px"></div>
+                        <div style="width: 48px"></div>
+                        <div style="width: 48px"></div>
+                    }
                     <MudTooltip Text="Delete Playout">
                         <MudIconButton Icon="@Icons.Material.Filled.Delete"
                                        Disabled="@EntityLocker.IsPlayoutLocked(context.PlayoutId)"
@@ -164,13 +189,34 @@
 
     private async Task PlayoutSelected(PlayoutNameViewModel playout)
     {
-        _selectedPlayoutId = playout.PlayoutId;
+        // only show details for flood playouts
+        _selectedPlayoutId = playout.PlayoutType == ProgramSchedulePlayoutType.Flood ? playout.PlayoutId : null;
+
         if (_detailTable != null)
         {
             await _detailTable.ReloadServerData();
         }
     }
 
+    private async Task EditExternalJsonFile(PlayoutNameViewModel playout)
+    {
+        var parameters = new DialogParameters { { "ExternalJsonFile", $"{playout.ExternalJsonFile}" } };
+        var options = new DialogOptions { CloseButton = true, MaxWidth = MaxWidth.Large };
+
+        IDialogReference dialog = await Dialog.ShowAsync<EditExternalJsonFileDialog>("Edit External Json File", parameters, options);
+        DialogResult result = await dialog.Result;
+        if (!result.Canceled)
+        {
+            await Mediator.Send(new UpdateExternalJsonPlayout(playout.PlayoutId, result.Data as string ?? playout.ExternalJsonFile), _cts.Token);
+            if (_table != null)
+            {
+                await _table.ReloadServerData();
+            }
+
+            _selectedPlayoutId = null;
+        }
+    }
+
     private async Task DeletePlayout(PlayoutNameViewModel playout)
     {
         var parameters = new DialogParameters { { "EntityType", "playout" }, { "EntityName", $"{playout.ScheduleName} on {playout.ChannelNumber} - {playout.ChannelName}" } };

ErsatzTV/Shared/EditExternalJsonFileDialog.razor

@@ -0,0 +1,45 @@
+@implements IDisposable
+
+<MudDialog>
+    <DialogContent>
+        <MudContainer Class="mb-6">
+            <MudText>
+                Edit the playout's external json file
+            </MudText>
+        </MudContainer>
+        <MudTextField Label="External Json File" @bind-Value="_externalJsonFile" />
+    </DialogContent>
+    <DialogActions>
+        <MudButton OnClick="Cancel" ButtonType="ButtonType.Reset">Cancel</MudButton>
+        <MudButton Color="Color.Primary" Variant="Variant.Filled" Disabled="@(string.IsNullOrWhiteSpace(_externalJsonFile))" OnClick="Submit">
+            Save Changes
+        </MudButton>
+    </DialogActions>
+</MudDialog>
+
+@code {
+    private readonly CancellationTokenSource _cts = new();
+
+    [Parameter]
+    public string ExternalJsonFile { get; set; }
+
+    [CascadingParameter]
+    MudDialogInstance MudDialog { get; set; }
+
+    private string _externalJsonFile;
+
+    public void Dispose()
+    {
+        _cts.Cancel();
+        _cts.Dispose();
+    }
+
+    protected override void OnParametersSet()
+    {
+        _externalJsonFile = ExternalJsonFile;
+    }
+    
+    private void Submit() => MudDialog.Close(DialogResult.Ok(_externalJsonFile));
+
+    private void Cancel() => MudDialog.Cancel();
+}

ErsatzTV/Startup.cs

@@ -27,6 +27,7 @@ using ErsatzTV.Core.Interfaces.Repositories.Caching;
 using ErsatzTV.Core.Interfaces.Scheduling;
 using ErsatzTV.Core.Interfaces.Scripting;
 using ErsatzTV.Core.Interfaces.Search;
+using ErsatzTV.Core.Interfaces.Streaming;
 using ErsatzTV.Core.Interfaces.Trakt;
 using ErsatzTV.Core.Jellyfin;
 using ErsatzTV.Core.Metadata;
@@ -56,6 +57,9 @@ using ErsatzTV.Infrastructure.Scripting;
 using ErsatzTV.Infrastructure.Search;
 using ErsatzTV.Infrastructure.Sqlite.Data;
 using ErsatzTV.Infrastructure.Trakt;
+using ErsatzTV.Scanner.Application.Streaming;
+using ErsatzTV.Scanner.Core.Interfaces.Metadata;
+using ErsatzTV.Scanner.Core.Metadata;
 using ErsatzTV.Serialization;
 using ErsatzTV.Services;
 using ErsatzTV.Services.RunOnce;
@@ -645,6 +649,8 @@ public class Startup
         services.AddScoped<IArtworkRepository, ArtworkRepository>();
         services.AddScoped<IFFmpegLocator, FFmpegLocator>();
         services.AddScoped<IFallbackMetadataProvider, FallbackMetadataProvider>();
+        services.AddScoped<ILocalStatisticsProvider, LocalStatisticsProvider>();
+        services.AddScoped<IExternalJsonPlayoutItemProvider, ExternalJsonPlayoutItemProvider>();
         services.AddScoped<IPlayoutBuilder, PlayoutBuilder>();
         services.AddScoped<IImageCache, ImageCache>();
         services.AddScoped<ILocalFileSystem, LocalFileSystem>();

ErsatzTV/Validators/PlayoutEditViewModelValidator.cs

@@ -8,6 +8,7 @@ public class PlayoutEditViewModelValidator : AbstractValidator<PlayoutEditViewMo
     public PlayoutEditViewModelValidator()
     {
         RuleFor(p => p.Channel).NotNull();
-        RuleFor(p => p.ProgramSchedule).NotNull();
+        RuleFor(p => p.ProgramSchedule).NotNull().When(p => p.Kind != "externaljson");
+        RuleFor(p => p.ExternalJsonFile).NotNull().When(p => p.Kind == "externaljson");
     }
 }

ErsatzTV/ViewModels/PlayoutEditViewModel.cs

@@ -1,15 +1,17 @@
 using ErsatzTV.Application.Channels;
 using ErsatzTV.Application.Playouts;
 using ErsatzTV.Application.ProgramSchedules;
-using ErsatzTV.Core.Domain;
 
 namespace ErsatzTV.ViewModels;
 
 public class PlayoutEditViewModel
 {
+    public string Kind { get; set; }
     public ChannelViewModel Channel { get; set; }
     public ProgramScheduleViewModel ProgramSchedule { get; set; }
+    public string ExternalJsonFile { get; set; }
 
-    public CreatePlayout ToCreate() =>
-        new(Channel.Id, ProgramSchedule.Id, ProgramSchedulePlayoutType.Flood);
+    public CreatePlayout ToCreate() => Kind == "externaljson"
+        ? new CreateExternalJsonPlayout(Channel.Id, ExternalJsonFile)
+        : new CreateFloodPlayout(Channel.Id, ProgramSchedule.Id);
 }