stream-cinema/CinemaJellyfin/CinemaRootFolder.cs

using System;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using Jellyfin.Data.Enums;
using Jellyfin.Extensions;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using Microsoft.Extensions.Logging;
using CinemaLib.API;

namespace Jellyfin.Plugin.Cinema;

/// <summary>
/// Cinema root folder that is displayed identically to user-defined libraries.
/// </summary>
public abstract class CinemaRootFolder : CinemaFilterFolder, ICollectionFolder
{

	/// <summary>
	/// Gets the item type for <see cref="ICollectionFolder"/>. Shall be kept in
	/// sync with value for <see cref="CinemaFilterFolder.ClientType"/>
	/// </summary>
	public abstract CollectionType? CollectionType { get; }




	/*
		
			public Task<DynamicImageResponse> GetChannelImage(ImageType type, CancellationToken cancellationToken)
			{
					if (type == ImageType.Primary)
					{
							return Task.FromResult(new DynamicImageResponse { Path = "https://streamcinema.cz/assets/logo-iqdz28nk.png", Protocol = MediaProtocol.Http, HasImage = true });
					}

					return Task.FromResult(new DynamicImageResponse { HasImage = false });
			}

			public IEnumerable<ImageType> GetSupportedChannelImages()
			{
					return new List<ImageType> { ImageType.Primary };
			}


			#region IHasCacheKey Members

			public string GetCacheKey(string userId)
			{
					DateTimeOffset dto = LiveTvService.Instance.RecordingModificationTime;
					return $"{dto.ToUnixTimeSeconds()}-{_cacheKeyBase}";
			}

			#endregion

			#region ISupportsLatestMedia Members

			public async Task<IEnumerable<ChannelItemInfo>> GetLatestMedia(ChannelLatestMediaSearch request, CancellationToken cancellationToken)
			{
					var result = await GetChannelItems(new InternalChannelItemQuery(), _ => true, cancellationToken).ConfigureAwait(false);

					return result.Items.OrderByDescending(i => i.DateCreated ?? DateTime.MinValue);
			}

			#endregion

			#region IHasFolderAttributes Members

	#pragma warning disable CA1819
			public string[] Attributes => ["Recordings"];
	#pragma warning restore CA1819

			#endregion


			private static string GetResourceUrl(string fileName)
			{
					return "__plugin/" + fileName;
			}

			private void CleanCache(bool cleanAll = false)
			{
					if (!string.IsNullOrEmpty(_recordingCacheDirectory) && Directory.Exists(_recordingCacheDirectory))
					{
							string[] cachedJson = Directory.GetFiles(_recordingCacheDirectory, "*.json");
							_logger.LogInformation("Cleaning JSON cache {CacheDirectory} {FileCount}", _recordingCacheDirectory, cachedJson.Length);
							foreach (string fileName in cachedJson)
							{
									if (cleanAll || _fileSystem.GetLastWriteTimeUtc(fileName).Add(TimeSpan.FromHours(3)) <= DateTimeOffset.UtcNow)
									{
											_fileSystem.DeleteFile(fileName);
									}
							}
					}
			}


			public async Task<ChannelItemResult> GetChannelItems(InternalChannelItemQuery query, Func<MyRecordingInfo, bool> filter, CancellationToken cancellationToken)
			{
					await GetRecordingsAsync("GetChannelItems", cancellationToken);
					List<ChannelItemInfo> pluginItems = new List<ChannelItemInfo>();
					pluginItems.AddRange(_allRecordings.Where(filter).Select(ConvertToChannelItem));
					var result = new ChannelItemResult() { Items = pluginItems };

					return result;
			}

			private ChannelItemInfo ConvertToChannelItem(MyRecordingInfo item)
			{
					var path = string.IsNullOrEmpty(item.Path) ? item.Url : item.Path;

					var channelItem = new ChannelItemInfo
					{
							Name = string.IsNullOrEmpty(item.EpisodeTitle) ? item.Name : item.EpisodeTitle,
							SeriesName = !string.IsNullOrEmpty(item.EpisodeTitle) || item.IsSeries ? item.Name : null,
							StartDate = item.StartDate,
							EndDate = item.EndDate,
							OfficialRating = item.OfficialRating,
							CommunityRating = item.CommunityRating,
							ContentType = item.IsMovie ? ChannelMediaContentType.Movie : ChannelMediaContentType.Episode,
							Genres = item.Genres,
							ImageUrl = item.ImageUrl,
							Id = item.Id,
							ParentIndexNumber = item.SeasonNumber,
							IndexNumber = item.EpisodeNumber,
							MediaType = item.ChannelType == ChannelType.TV ? ChannelMediaType.Video : ChannelMediaType.Audio,
							MediaSources = new List<MediaSourceInfo>
							{
									new MediaSourceInfo
									{
											Path = path,
											Container = item.Status == RecordingStatus.InProgress ? "ts" : null,
											Protocol = path.StartsWith("http", StringComparison.OrdinalIgnoreCase) ? MediaProtocol.Http : MediaProtocol.File,
											BufferMs = 1000,
											AnalyzeDurationMs = 0,
											IsInfiniteStream = item.Status == RecordingStatus.InProgress,
											TranscodingContainer = "ts",
											RunTimeTicks = item.Status == RecordingStatus.InProgress ? null : (item.EndDate - item.StartDate).Ticks,
									}
							},
							PremiereDate = item.OriginalAirDate,
							ProductionYear = item.ProductionYear,
							Type = ChannelItemType.Media,
							DateModified = item.Status == RecordingStatus.InProgress ? DateTime.Now : Plugin.Instance.Configuration.RecordingModificationTime,
							Overview = item.Overview,
							IsLiveStream = item.Status != RecordingStatus.InProgress ? false : Plugin.Instance.Configuration.EnableInProgress,
							Etag = item.Status.ToString()
					};

					return channelItem;
			}

			private async Task<bool> GetRecordingsAsync(string name, CancellationToken cancellationToken)
			{
					var service = GetService();
					if (service is null || !service.IsActive)
					{
							return false;
					}

					if (_useCachedRecordings == false || service.FlagRecordingChange)
					{
							if (_pollInterval == -1)
							{
									var interval = TimeSpan.FromSeconds(Plugin.Instance.Configuration.PollInterval);
									_updateTimer = new Timer(OnUpdateTimerCallbackAsync, null, TimeSpan.FromMinutes(2), interval);
									if (_updateTimer != null)
									{
											_pollInterval = Plugin.Instance.Configuration.PollInterval;
									}
							}

							if (await _semaphore.WaitAsync(30000, cancellationToken))
							{
									try
									{
											_logger.LogDebug("{0} Reload cache", name);
											_allRecordings = await service.GetAllRecordingsAsync(cancellationToken).ConfigureAwait(false);
											int maxId = _allRecordings.Max(r => int.Parse(r.Id, CultureInfo.InvariantCulture));
											int inProcessCount = _allRecordings.Count(r => r.Status == RecordingStatus.InProgress);
											string keyBase = $"{maxId}-{inProcessCount}-{_allRecordings.Count()}";
											if (keyBase != _cacheKeyBase && !service.FlagRecordingChange)
											{
													_logger.LogDebug("External recording list change {0}", keyBase);
													CleanCache(true);
											}

											_cacheKeyBase = keyBase;
											_lastUpdate = DateTimeOffset.UtcNow;
											service.FlagRecordingChange = false;
											_useCachedRecordings = true;
									}
									catch (Exception)
									{
									}

									_semaphore.Release();
							}
					}

					return _useCachedRecordings;
			}

			private async void OnUpdateTimerCallbackAsync(object state)
			{
					LiveTvService service = LiveTvService.Instance;
					if (service is not null && service.IsActive)
					{
							var backendUpdate = await service.GetLastUpdate(_cancellationToken.Token).ConfigureAwait(false);
							if (backendUpdate > _lastUpdate)
							{
									_logger.LogDebug("Recordings reset {0}", backendUpdate);
									_useCachedRecordings = false;
									await GetRecordingsAsync("OnUpdateTimerCallbackAsync", _cancellationToken.Token);
							}
					}
			}*/
}