Check for duplicates when adding items to a playlist
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@ -189,41 +189,45 @@ namespace Emby.Server.Implementations.Playlists
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private void AddToPlaylistInternal(string playlistId, IEnumerable<Guid> itemIds, User user, DtoOptions options)
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{
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var playlist = _libraryManager.GetItemById(playlistId) as Playlist;
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if (playlist == null)
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{
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throw new ArgumentException("No Playlist exists with the supplied Id");
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}
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var list = new List<LinkedChild>();
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// Retrieve the existing playlist
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var playlist = _libraryManager.GetItemById(playlistId) as Playlist
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?? throw new ArgumentException("No Playlist exists with Id " + playlistId);
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// Retrieve all the items to be added to the playlist
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var items = GetPlaylistItems(itemIds, playlist.MediaType, user, options)
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.Where(i => i.SupportsAddingToPlaylist)
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.ToList();
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foreach (var item in items)
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// Remove duplicates from the new items to be added
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var existingIds = playlist.LinkedChildren.Select(c => c.ItemId).ToHashSet();
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var uniqueItems = items
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.Where(i => !existingIds.Contains(i.Id))
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.GroupBy(i => i.Id)
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.Select(group => group.First())
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.ToList();
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// Log duplicates that have been ignored, if any
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if (uniqueItems.Count != items.Count)
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{
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list.Add(LinkedChild.Create(item));
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var numDuplicates = items.Count - uniqueItems.Count;
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_logger.LogWarning("Ignored adding {DuplicateCount} duplicate items to playlist {PlaylistName}.", numDuplicates, playlist.Name);
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}
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var newList = playlist.LinkedChildren.ToList();
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newList.AddRange(list);
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playlist.LinkedChildren = newList.ToArray();
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// Update the playlist in the repository
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var linkedItems = uniqueItems.Select(i => LinkedChild.Create(i));
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playlist.LinkedChildren = playlist.LinkedChildren.Concat(linkedItems).ToArray();
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playlist.UpdateToRepository(ItemUpdateType.MetadataEdit, CancellationToken.None);
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// Update the playlist on disk
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if (playlist.IsFile)
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{
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SavePlaylistFile(playlist);
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}
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// Refresh playlist metadata
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_providerManager.QueueRefresh(
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playlist.Id,
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new MetadataRefreshOptions(new DirectoryService(_fileSystem))
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{
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ForceSave = true
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},
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new MetadataRefreshOptions(new DirectoryService(_fileSystem)) { ForceSave = true },
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RefreshPriority.High);
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}
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