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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.TV;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using System;
using System.Collections.Generic;
using System.Linq;
namespace MediaBrowser.Server.Implementations.TV
{
public class TVSeriesManager : ITVSeriesManager
{
private readonly IUserManager _userManager;
private readonly IUserDataManager _userDataManager;
private readonly ILibraryManager _libraryManager;
public TVSeriesManager(IUserManager userManager, IUserDataManager userDataManager, ILibraryManager libraryManager)
{
_userManager = userManager;
_userDataManager = userDataManager;
_libraryManager = libraryManager;
}
public QueryResult<BaseItem> GetNextUp(NextUpQuery request)
{
var user = _userManager.GetUserById(request.UserId);
if (user == null)
{
throw new ArgumentException("User not found");
}
var parentIds = string.IsNullOrEmpty(request.ParentId)
? new string[] { }
: new[] { request.ParentId };
var items = _libraryManager.GetItems(new InternalItemsQuery(user)
{
IncludeItemTypes = new[] { typeof(Series).Name },
SortOrder = SortOrder.Ascending
}, user, parentIds).Cast<Series>();
// Avoid implicitly captured closure
var episodes = GetNextUpEpisodes(request, user, items);
return GetResult(episodes, null, request);
}
public QueryResult<BaseItem> GetNextUp(NextUpQuery request, IEnumerable<Folder> parentsFolders)
{
var user = _userManager.GetUserById(request.UserId);
if (user == null)
{
throw new ArgumentException("User not found");
}
var items = _libraryManager.GetItems(new InternalItemsQuery(user)
{
IncludeItemTypes = new[] { typeof(Series).Name },
SortOrder = SortOrder.Ascending
}, user, parentsFolders.Select(i => i.Id.ToString("N"))).Cast<Series>();
// Avoid implicitly captured closure
var episodes = GetNextUpEpisodes(request, user, items);
return GetResult(episodes, null, request);
}
public IEnumerable<Episode> GetNextUpEpisodes(NextUpQuery request, User user, IEnumerable<Series> series)
{
// Avoid implicitly captured closure
var currentUser = user;
return FilterSeries(request, series)
.AsParallel()
.Select(i => GetNextUp(i, currentUser))
// Include if an episode was found, and either the series is not unwatched or the specific series was requested
.Where(i => i.Item1 != null && (!i.Item3 || !string.IsNullOrWhiteSpace(request.SeriesId)))
.OrderByDescending(i =>
{
var episode = i.Item1;
var seriesUserData = _userDataManager.GetUserData(user.Id, episode.Series.GetUserDataKey());
if (seriesUserData.IsFavorite)
{
return 2;
}
if (seriesUserData.Likes.HasValue)
{
return seriesUserData.Likes.Value ? 1 : -1;
}
return 0;
})
.ThenByDescending(i => i.Item2)
.ThenByDescending(i => i.Item1.PremiereDate ?? DateTime.MinValue)
.Select(i => i.Item1);
}
/// <summary>
/// Gets the next up.
/// </summary>
/// <param name="series">The series.</param>
/// <param name="user">The user.</param>
/// <returns>Task{Episode}.</returns>
private Tuple<Episode, DateTime, bool> GetNextUp(Series series, User user)
{
// Get them in display order, then reverse
var allEpisodes = series.GetSeasons(user, true, true)
.Where(i => !i.IndexNumber.HasValue || i.IndexNumber.Value != 0)
.SelectMany(i => i.GetEpisodes(user))
.Reverse()
.ToList();
Episode lastWatched = null;
var lastWatchedDate = DateTime.MinValue;
Episode nextUp = null;
var includeMissing = user.Configuration.DisplayMissingEpisodes;
// Go back starting with the most recent episodes
foreach (var episode in allEpisodes)
{
var userData = _userDataManager.GetUserData(user.Id, episode.GetUserDataKey());
if (userData.Played)
{
if (lastWatched != null || nextUp == null)
{
break;
}
lastWatched = episode;
lastWatchedDate = userData.LastPlayedDate ?? DateTime.MinValue;
}
else
{
if (!episode.IsVirtualUnaired && (!episode.IsMissingEpisode || includeMissing))
{
nextUp = episode;
}
}
}
if (lastWatched != null)
{
return new Tuple<Episode, DateTime, bool>(nextUp, lastWatchedDate, false);
}
var firstEpisode = allEpisodes.LastOrDefault(i => !i.IsVirtualUnaired && (!i.IsMissingEpisode || includeMissing) && !i.IsPlayed(user));
// Return the first episode
return new Tuple<Episode, DateTime, bool>(firstEpisode, DateTime.MinValue, true);
}
private IEnumerable<Series> FilterSeries(NextUpQuery request, IEnumerable<Series> items)
{
if (!string.IsNullOrWhiteSpace(request.SeriesId))
{
var id = new Guid(request.SeriesId);
items = items.Where(i => i.Id == id);
}
return items;
}
private QueryResult<BaseItem> GetResult(IEnumerable<BaseItem> items, int? totalRecordLimit, NextUpQuery query)
{
var itemsArray = totalRecordLimit.HasValue ? items.Take(totalRecordLimit.Value).ToArray() : items.ToArray();
var totalCount = itemsArray.Length;
if (query.Limit.HasValue)
{
itemsArray = itemsArray.Skip(query.StartIndex ?? 0).Take(query.Limit.Value).ToArray();
}
else if (query.StartIndex.HasValue)
{
itemsArray = itemsArray.Skip(query.StartIndex.Value).ToArray();
}
return new QueryResult<BaseItem>
{
TotalRecordCount = totalCount,
Items = itemsArray
};
}
}
}
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