rework emby collection scanning (#1205)

* optimize emby collection scan frequency

* add button to sync emby collections

* update changelog

* fix scanning; add progress indicator

ErsatzTV/Services/ScannerService.cs

@@ -59,6 +59,9 @@ public class ScannerService : BackgroundService
                         case ISynchronizeEmbyLibraryById synchronizeEmbyLibraryById:
                             requestTask = SynchronizeEmbyLibrary(synchronizeEmbyLibraryById, cancellationToken);
                             break;
+                        case SynchronizeEmbyCollections synchronizeEmbyCollections:
+                            requestTask = SynchronizeEmbyCollections(synchronizeEmbyCollections, cancellationToken);
+                            break;
                         case IScanLocalLibrary scanLocalLibrary:
                             requestTask = SynchronizeLocalLibrary(scanLocalLibrary, cancellationToken);
                             break;
@@ -274,5 +277,34 @@ public class ScannerService : BackgroundService
             entityLocker.UnlockLibrary(request.EmbyLibraryId);
         }
     }
+
+    private async Task SynchronizeEmbyCollections(
+        SynchronizeEmbyCollections request,
+        CancellationToken cancellationToken)
+    {
+        using IServiceScope scope = _serviceScopeFactory.CreateScope();
+        IMediator mediator = scope.ServiceProvider.GetRequiredService<IMediator>();
+        IEntityLocker entityLocker = scope.ServiceProvider.GetRequiredService<IEntityLocker>();
+
+        Either<BaseError, Unit> result = await mediator.Send(request, cancellationToken);
+        result.BiIter(
+            _ => _logger.LogDebug("Done synchronizing emby collections"),
+            error =>
+            {
+                if (error is ScanIsNotRequired)
+                {
+                    _logger.LogDebug("Scan is not required for emby collections at this time");
+                }
+                else
+                {
+                    _logger.LogWarning("Unable to synchronize emby collections: {Error}", error.Value);
+                }
+            });
+        
+        if (entityLocker.AreEmbyCollectionsLocked())
+        {
+            entityLocker.UnlockEmbyCollections();
+        }
+    }
 }
 

ErsatzTV/Services/SchedulerService.cs

@@ -236,8 +236,12 @@ public class SchedulerService : BackgroundService
         using IServiceScope scope = _serviceScopeFactory.CreateScope();
         TvContext dbContext = scope.ServiceProvider.GetRequiredService<TvContext>();
 
+        var mediaSourceIds = new System.Collections.Generic.HashSet<int>();
+        
         foreach (EmbyLibrary library in dbContext.EmbyLibraries.Filter(l => l.ShouldSyncItems))
         {
+            mediaSourceIds.Add(library.MediaSourceId);
+            
             if (_entityLocker.LockLibrary(library.Id))
             {
                 await _scannerWorkerChannel.WriteAsync(
@@ -245,6 +249,13 @@ public class SchedulerService : BackgroundService
                     cancellationToken);
             }
         }
+
+        foreach (int mediaSourceId in mediaSourceIds)
+        {
+            await _scannerWorkerChannel.WriteAsync(
+                new SynchronizeEmbyCollections(mediaSourceId, false),
+                cancellationToken);
+        }
     }
 
     private async Task MatchTraktLists(CancellationToken cancellationToken)