jellyfin-server/MediaBrowser.Server.Implementations/Library/Validators/ArtistsValidator.cs
2013-11-21 15:48:26 -05:00

190 lines
6.2 KiB
C#

using MediaBrowser.Common.Progress;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Library.Validators
{
/// <summary>
/// Class ArtistsValidator
/// </summary>
public class ArtistsValidator
{
/// <summary>
/// The _library manager
/// </summary>
private readonly ILibraryManager _libraryManager;
/// <summary>
/// The _user manager
/// </summary>
private readonly IUserManager _userManager;
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// Initializes a new instance of the <see cref="ArtistsPostScanTask" /> class.
/// </summary>
/// <param name="libraryManager">The library manager.</param>
/// <param name="userManager">The user manager.</param>
/// <param name="logger">The logger.</param>
public ArtistsValidator(ILibraryManager libraryManager, IUserManager userManager, ILogger logger)
{
_libraryManager = libraryManager;
_userManager = userManager;
_logger = logger;
}
/// <summary>
/// Runs the specified progress.
/// </summary>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
public async Task Run(IProgress<double> progress, CancellationToken cancellationToken)
{
var allItems = _libraryManager.RootFolder.GetRecursiveChildren();
var allSongs = allItems.OfType<Audio>().ToList();
var innerProgress = new ActionableProgress<double>();
innerProgress.RegisterAction(pct => progress.Report(pct * .8));
var allArtists = await GetAllArtists(allSongs, cancellationToken, innerProgress).ConfigureAwait(false);
progress.Report(80);
var numComplete = 0;
var userLibraries = _userManager.Users
.Select(i => new Tuple<Guid, List<IHasArtist>>(i.Id, i.RootFolder.GetRecursiveChildren(i).OfType<IHasArtist>().ToList()))
.ToList();
var numArtists = allArtists.Count;
foreach (var artist in allArtists)
{
cancellationToken.ThrowIfCancellationRequested();
// Only do this for artists accessed by name. Folder-based artists use ArtistInfoFromSongsProvider
if (artist.IsAccessedByName && !artist.LockedFields.Contains(MetadataFields.Genres))
{
// Avoid implicitly captured closure
var artist1 = artist;
artist.Genres = allSongs.Where(i => i.HasArtist(artist1.Name))
.SelectMany(i => i.Genres)
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
// Populate counts of items
//SetItemCounts(artist, null, allItems.OfType<IHasArtist>());
foreach (var lib in userLibraries)
{
SetItemCounts(artist, lib.Item1, lib.Item2);
}
numComplete++;
double percent = numComplete;
percent /= numArtists;
percent *= 20;
progress.Report(80 + percent);
}
progress.Report(100);
}
/// <summary>
/// Sets the item counts.
/// </summary>
/// <param name="artist">The artist.</param>
/// <param name="userId">The user id.</param>
/// <param name="allItems">All items.</param>
private void SetItemCounts(MusicArtist artist, Guid? userId, IEnumerable<IHasArtist> allItems)
{
var name = artist.Name;
var items = allItems
.Where(i => i.HasArtist(name))
.ToList();
var counts = new ItemByNameCounts
{
TotalCount = items.Count,
SongCount = items.OfType<Audio>().Count(),
AlbumCount = items.OfType<MusicAlbum>().Count(),
MusicVideoCount = items.OfType<MusicVideo>().Count()
};
if (userId.HasValue)
{
artist.UserItemCounts[userId.Value] = counts;
}
}
/// <summary>
/// Gets all artists.
/// </summary>
/// <param name="allSongs">All songs.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="progress">The progress.</param>
/// <returns>Task{Artist[]}.</returns>
private async Task<List<MusicArtist>> GetAllArtists(IEnumerable<Audio> allSongs, CancellationToken cancellationToken, IProgress<double> progress)
{
var allArtists = _libraryManager.GetAllArtists(allSongs)
.ToList();
var returnArtists = new List<MusicArtist>(allArtists.Count);
var numComplete = 0;
var numArtists = allArtists.Count;
foreach (var artist in allArtists)
{
cancellationToken.ThrowIfCancellationRequested();
try
{
var artistItem = _libraryManager.GetArtist(artist);
await artistItem.RefreshMetadata(cancellationToken).ConfigureAwait(false);
returnArtists.Add(artistItem);
}
catch (IOException ex)
{
_logger.ErrorException("Error validating Artist {0}", ex, artist);
}
// Update progress
numComplete++;
double percent = numComplete;
percent /= numArtists;
progress.Report(100 * percent);
}
return returnArtists;
}
}
}