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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using ServiceStack.ServiceHost;
using System;
using System.Linq;
namespace MediaBrowser.Api
{
[Route("/Albums/{Id}/Similar", "GET")]
[Api(Description = "Finds albums similar to a given album.")]
public class GetSimilarAlbums : BaseGetSimilarItems
{
}
public class AlbumsService : BaseApiService
{
/// <summary>
/// The _user manager
/// </summary>
private readonly IUserManager _userManager;
/// <summary>
/// The _user data repository
/// </summary>
private readonly IUserDataRepository _userDataRepository;
/// <summary>
/// The _library manager
/// </summary>
private readonly ILibraryManager _libraryManager;
private readonly IItemRepository _itemRepo;
public AlbumsService(IUserManager userManager, IUserDataRepository userDataRepository, ILibraryManager libraryManager, IItemRepository itemRepo)
{
_userManager = userManager;
_userDataRepository = userDataRepository;
_libraryManager = libraryManager;
_itemRepo = itemRepo;
}
/// <summary>
/// Gets the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public object Get(GetSimilarAlbums request)
{
var result = SimilarItemsHelper.GetSimilarItems(_userManager,
_itemRepo,
_libraryManager,
_userDataRepository,
Logger,
request, item => item is MusicAlbum,
GetAlbumSimilarityScore);
return ToOptimizedResult(result);
}
/// <summary>
/// Gets the album similarity score.
/// </summary>
/// <param name="item1">The item1.</param>
/// <param name="item2">The item2.</param>
/// <returns>System.Int32.</returns>
private int GetAlbumSimilarityScore(BaseItem item1, BaseItem item2)
{
var points = SimilarItemsHelper.GetSimiliarityScore(item1, item2);
var album1 = (MusicAlbum)item1;
var album2 = (MusicAlbum)item2;
var artists1 = album1.RecursiveChildren
.OfType<Audio>()
.SelectMany(i => new[] { i.AlbumArtist, i.Artist })
.Where(i => !string.IsNullOrEmpty(i))
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
var artists2 = album2.RecursiveChildren
.OfType<Audio>()
.SelectMany(i => new[] { i.AlbumArtist, i.Artist })
.Where(i => !string.IsNullOrEmpty(i))
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
return points + artists1.Where(i => artists2.Contains(i, StringComparer.OrdinalIgnoreCase)).Sum(i => 5);
}
}
}
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