jellyfin/MediaBrowser.Api/TvShowsService.cs

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using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Persistence;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Querying;
using ServiceStack.ServiceHost;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
namespace MediaBrowser.Api
{
/// <summary>
/// Class GetNextUpEpisodes
/// </summary>
[Route("/Shows/NextUp", "GET")]
[Api(("Gets a list of currently installed plugins"))]
public class GetNextUpEpisodes : IReturn<ItemsResult>
{
/// <summary>
/// Gets or sets the user id.
/// </summary>
/// <value>The user id.</value>
[ApiMember(Name = "UserId", Description = "User Id", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "GET")]
public Guid UserId { get; set; }
/// <summary>
/// Skips over a given number of items within the results. Use for paging.
/// </summary>
/// <value>The start index.</value>
[ApiMember(Name = "StartIndex", Description = "Optional. The record index to start at. All items with a lower index will be dropped from the results.", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
public int? StartIndex { get; set; }
/// <summary>
/// The maximum number of items to return
/// </summary>
/// <value>The limit.</value>
[ApiMember(Name = "Limit", Description = "Optional. The maximum number of records to return", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
public int? Limit { get; set; }
/// <summary>
/// Fields to return within the items, in addition to basic information
/// </summary>
/// <value>The fields.</value>
[ApiMember(Name = "Fields", Description = "Optional. Specify additional fields of information to return in the output. This allows multiple, comma delimeted. Options: AudioInfo, Budget, Chapters, DateCreated, DisplayMediaType, DisplayPreferences, EndDate, Genres, HomePageUrl, ItemCounts, IndexOptions, Locations, MediaStreams, Overview, OverviewHtml, ParentId, Path, People, ProviderIds, PrimaryImageAspectRatio, Revenue, SeriesInfo, SortName, Studios, Taglines, TrailerUrls, UserData", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET", AllowMultiple = true)]
public string Fields { get; set; }
/// <summary>
/// Gets the item fields.
/// </summary>
/// <returns>IEnumerable{ItemFields}.</returns>
public IEnumerable<ItemFields> GetItemFields()
{
var val = Fields;
if (string.IsNullOrEmpty(val))
{
return new ItemFields[] { };
}
return val.Split(',').Select(v => (ItemFields)Enum.Parse(typeof(ItemFields), v, true));
}
}
/// <summary>
/// Class TvShowsService
/// </summary>
public class TvShowsService : 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;
/// <summary>
/// Initializes a new instance of the <see cref="TvShowsService" /> class.
/// </summary>
/// <param name="userManager">The user manager.</param>
/// <param name="userDataRepository">The user data repository.</param>
/// <param name="libraryManager">The library manager.</param>
public TvShowsService(IUserManager userManager, IUserDataRepository userDataRepository, ILibraryManager libraryManager)
{
_userManager = userManager;
_userDataRepository = userDataRepository;
_libraryManager = libraryManager;
}
/// <summary>
/// Gets the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public object Get(GetNextUpEpisodes request)
{
var result = GetNextUpEpisodes(request).Result;
return ToOptimizedResult(result);
}
/// <summary>
/// Gets the next up episodes.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>Task{ItemsResult}.</returns>
private async Task<ItemsResult> GetNextUpEpisodes(GetNextUpEpisodes request)
{
var user = _userManager.GetUserById(request.UserId);
var tasks = user.RootFolder
.GetRecursiveChildren(user)
.OfType<Series>()
.AsParallel()
.Select(i => GetNextUp(i, user));
var itemsArray = await Task.WhenAll(tasks).ConfigureAwait(false);
itemsArray = itemsArray
.Where(i => i.Item1 != null)
.OrderByDescending(i =>
{
var seriesUserData =
_userDataRepository.GetUserData(user.Id, i.Item1.Series.GetUserDataKey()).Result;
if (seriesUserData.IsFavorite)
{
return 2;
}
if (seriesUserData.Likes.HasValue)
{
return seriesUserData.Likes.Value ? 1 : -1;
}
return 0;
})
.ThenByDescending(i => i.Item1.PremiereDate ?? DateTime.MinValue)
.ToArray();
var pagedItems = ApplyPaging(request, itemsArray.Select(i => i.Item1));
var fields = request.GetItemFields().ToList();
var returnItems = await GetItemDtos(pagedItems, user, fields).ConfigureAwait(false);
return new ItemsResult
{
TotalRecordCount = itemsArray.Length,
Items = returnItems
};
}
/// <summary>
/// Gets the next up.
/// </summary>
/// <param name="series">The series.</param>
/// <param name="user">The user.</param>
/// <returns>Task{Episode}.</returns>
private async Task<Tuple<Episode,DateTime>> GetNextUp(Series series, User user)
{
var allEpisodes = series.GetRecursiveChildren(user)
.OfType<Episode>()
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.OrderByDescending(i => i.PremiereDate ?? DateTime.MinValue)
.ThenByDescending(i => i.IndexNumber ?? 0)
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.ToList();
Episode lastWatched = null;
var lastWatchedDate = DateTime.MinValue;
Episode nextUp = null;
// Go back starting with the most recent episodes
foreach (var episode in allEpisodes)
{
var userData = await _userDataRepository.GetUserData(user.Id, episode.GetUserDataKey()).ConfigureAwait(false);
if (userData.Played)
{
if (lastWatched != null || nextUp == null)
{
break;
}
lastWatched = episode;
lastWatchedDate = userData.LastPlayedDate ?? DateTime.MinValue;
}
else
{
nextUp = episode;
}
}
if (lastWatched != null)
{
return new Tuple<Episode, DateTime>(nextUp, lastWatchedDate);
}
return new Tuple<Episode, DateTime>(null, lastWatchedDate);
}
/// <summary>
/// Gets the item dtos.
/// </summary>
/// <param name="pagedItems">The paged items.</param>
/// <param name="user">The user.</param>
/// <param name="fields">The fields.</param>
/// <returns>Task.</returns>
private Task<BaseItemDto[]> GetItemDtos(IEnumerable<BaseItem> pagedItems, User user, List<ItemFields> fields)
{
var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userDataRepository);
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return Task.WhenAll(pagedItems.Select(i => dtoBuilder.GetBaseItemDto(i, fields, user)));
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}
/// <summary>
/// Applies the paging.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="items">The items.</param>
/// <returns>IEnumerable{BaseItem}.</returns>
private IEnumerable<BaseItem> ApplyPaging(GetNextUpEpisodes request, IEnumerable<BaseItem> items)
{
// Start at
if (request.StartIndex.HasValue)
{
items = items.Skip(request.StartIndex.Value);
}
// Return limit
if (request.Limit.HasValue)
{
items = items.Take(request.Limit.Value);
}
return items;
}
}
}