proxy jellyfin and emby artwork for xmltv (#210)

* fix xmltv artwork for jf and emby * proxy jellyfin and emby artwork for xmltv
2021-05-25 15:15:15 -05:00
parent f9427cac99
commit c9e20e28df
16 changed files with 348 additions and 19 deletions
@@ -0,0 +1,4 @@
+namespace ErsatzTV.Application.Jellyfin
+{
+    public record JellyfinConnectionParametersViewModel(string Address);
+}
@@ -0,0 +1,8 @@
+using ErsatzTV.Core;
+using LanguageExt;
+using MediatR;
+
+namespace ErsatzTV.Application.Jellyfin.Queries
+{
+    public record GetJellyfinConnectionParameters : IRequest<Either<BaseError, JellyfinConnectionParametersViewModel>>;
+}
@@ -0,0 +1,73 @@
+using System;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using ErsatzTV.Core;
+using ErsatzTV.Core.Domain;
+using ErsatzTV.Core.Interfaces.Repositories;
+using LanguageExt;
+using MediatR;
+using Microsoft.Extensions.Caching.Memory;
+
+namespace ErsatzTV.Application.Jellyfin.Queries
+{
+    public class GetJellyfinConnectionParametersHandler : IRequestHandler<GetJellyfinConnectionParameters,
+        Either<BaseError, JellyfinConnectionParametersViewModel>>
+    {
+        private readonly IMediaSourceRepository _mediaSourceRepository;
+        private readonly IMemoryCache _memoryCache;
+
+        public GetJellyfinConnectionParametersHandler(
+            IMemoryCache memoryCache,
+            IMediaSourceRepository mediaSourceRepository)
+        {
+            _memoryCache = memoryCache;
+            _mediaSourceRepository = mediaSourceRepository;
+        }
+
+        public async Task<Either<BaseError, JellyfinConnectionParametersViewModel>> Handle(
+            GetJellyfinConnectionParameters request,
+            CancellationToken cancellationToken)
+        {
+            if (_memoryCache.TryGetValue(request, out JellyfinConnectionParametersViewModel parameters))
+            {
+                return parameters;
+            }
+
+            Either<BaseError, JellyfinConnectionParametersViewModel> maybeParameters =
+                await Validate()
+                    .MapT(cp => new JellyfinConnectionParametersViewModel(cp.ActiveConnection.Address))
+                    .Map(v => v.ToEither<JellyfinConnectionParametersViewModel>());
+
+            return maybeParameters.Match(
+                p =>
+                {
+                    _memoryCache.Set(request, p, TimeSpan.FromHours(1));
+                    return maybeParameters;
+                },
+                error => error);
+        }
+
+        private Task<Validation<BaseError, ConnectionParameters>> Validate() =>
+            JellyfinMediaSourceMustExist()
+                .BindT(MediaSourceMustHaveActiveConnection);
+
+        private Task<Validation<BaseError, JellyfinMediaSource>> JellyfinMediaSourceMustExist() =>
+            _mediaSourceRepository.GetAllJellyfin().Map(list => list.HeadOrNone())
+                .Map(
+                    v => v.ToValidation<BaseError>(
+                        "Jellyfin media source does not exist."));
+
+        private Validation<BaseError, ConnectionParameters> MediaSourceMustHaveActiveConnection(
+            JellyfinMediaSource jellyfinMediaSource)
+        {
+            Option<JellyfinConnection> maybeConnection = jellyfinMediaSource.Connections.FirstOrDefault();
+            return maybeConnection.Map(connection => new ConnectionParameters(jellyfinMediaSource, connection))
+                .ToValidation<BaseError>("Jellyfin media source requires an active connection");
+        }
+
+        private record ConnectionParameters(
+            JellyfinMediaSource JellyfinMediaSource,
+            JellyfinConnection ActiveConnection);
+    }
+}