jellyfin/MediaBrowser.Server.Implementations/TV/TVSeriesManager.cs

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C#
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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)
{
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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 };
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string presentationUniqueKey = null;
int? limit = null;
if (!string.IsNullOrWhiteSpace(request.SeriesId))
{
var series = _libraryManager.GetItemById(request.SeriesId);
if (series != null)
{
presentationUniqueKey = series.PresentationUniqueKey;
limit = 1;
}
}
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var items = _libraryManager.GetItemList(new InternalItemsQuery(user)
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{
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IncludeItemTypes = new[] { typeof(Series).Name },
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SortOrder = SortOrder.Ascending,
PresentationUniqueKey = presentationUniqueKey,
Limit = limit
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}, 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)
{
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var user = _userManager.GetUserById(request.UserId);
if (user == null)
{
throw new ArgumentException("User not found");
}
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string presentationUniqueKey = null;
int? limit = null;
if (!string.IsNullOrWhiteSpace(request.SeriesId))
{
var series = _libraryManager.GetItemById(request.SeriesId);
if (series != null)
{
presentationUniqueKey = series.PresentationUniqueKey;
limit = 1;
}
}
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var items = _libraryManager.GetItemList(new InternalItemsQuery(user)
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{
IncludeItemTypes = new[] { typeof(Series).Name },
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SortOrder = SortOrder.Ascending,
PresentationUniqueKey = presentationUniqueKey,
Limit = limit
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}, 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;
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return series
.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)))
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.OrderByDescending(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)
{
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var lastWatchedEpisode = _libraryManager.GetItemList(new InternalItemsQuery(user)
{
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AncestorWithPresentationUniqueKey = series.PresentationUniqueKey,
IncludeItemTypes = new[] { typeof(Episode).Name },
SortBy = new[] { ItemSortBy.SortName },
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SortOrder = SortOrder.Descending,
IsPlayed = true,
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Limit = 1,
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IsVirtualItem = false,
ParentIndexNumberNotEquals = 0
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}).FirstOrDefault();
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var firstUnwatchedEpisode = _libraryManager.GetItemList(new InternalItemsQuery(user)
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{
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AncestorWithPresentationUniqueKey = series.PresentationUniqueKey,
IncludeItemTypes = new[] { typeof(Episode).Name },
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SortBy = new[] { ItemSortBy.SortName },
SortOrder = SortOrder.Ascending,
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Limit = 1,
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IsPlayed = false,
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IsVirtualItem = false,
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ParentIndexNumberNotEquals = 0,
MinSortName = lastWatchedEpisode == null ? null : lastWatchedEpisode.SortName
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}).Cast<Episode>().FirstOrDefault();
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if (lastWatchedEpisode != null)
{
var userData = _userDataManager.GetUserData(user, lastWatchedEpisode);
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if (userData.LastPlayedDate.HasValue)
{
return new Tuple<Episode, DateTime, bool>(firstUnwatchedEpisode, userData.LastPlayedDate.Value, false);
}
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}
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// Return the first episode
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return new Tuple<Episode, DateTime, bool>(firstUnwatchedEpisode, DateTime.MinValue, true);
}
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
};
}
}
}