979 lines
36 KiB
C#
979 lines
36 KiB
C#
using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.IO;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Localization;
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using MediaBrowser.Controller.Resolvers;
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using MediaBrowser.Controller.Sorting;
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using MediaBrowser.Model.Entities;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Controller.Entities
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{
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/// <summary>
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/// Class Folder
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/// </summary>
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public class Folder : BaseItem
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{
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/// <summary>
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/// Gets a value indicating whether this instance is folder.
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/// </summary>
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/// <value><c>true</c> if this instance is folder; otherwise, <c>false</c>.</value>
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[IgnoreDataMember]
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public override bool IsFolder
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{
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get
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{
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return true;
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}
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}
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/// <summary>
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/// Gets or sets a value indicating whether this instance is physical root.
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/// </summary>
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/// <value><c>true</c> if this instance is physical root; otherwise, <c>false</c>.</value>
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public bool IsPhysicalRoot { get; set; }
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/// <summary>
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/// Gets or sets a value indicating whether this instance is root.
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/// </summary>
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/// <value><c>true</c> if this instance is root; otherwise, <c>false</c>.</value>
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public bool IsRoot { get; set; }
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/// <summary>
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/// Gets a value indicating whether this instance is virtual folder.
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/// </summary>
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/// <value><c>true</c> if this instance is virtual folder; otherwise, <c>false</c>.</value>
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[IgnoreDataMember]
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public virtual bool IsVirtualFolder
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{
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get
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{
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return false;
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}
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}
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/// <summary>
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/// Return the id that should be used to key display prefs for this item.
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/// Default is based on the type for everything except actual generic folders.
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/// </summary>
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/// <value>The display prefs id.</value>
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[IgnoreDataMember]
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public virtual Guid DisplayPreferencesId
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{
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get
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{
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var thisType = GetType();
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return thisType == typeof(Folder) ? Id : thisType.FullName.GetMD5();
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}
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}
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/// <summary>
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/// The _display prefs
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/// </summary>
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private IEnumerable<DisplayPreferences> _displayPreferences;
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/// <summary>
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/// The _display prefs initialized
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/// </summary>
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private bool _displayPreferencesInitialized;
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/// <summary>
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/// The _display prefs sync lock
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/// </summary>
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private object _displayPreferencesSyncLock = new object();
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/// <summary>
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/// Gets the display prefs.
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/// </summary>
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/// <value>The display prefs.</value>
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[IgnoreDataMember]
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public IEnumerable<DisplayPreferences> DisplayPreferences
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{
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get
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{
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// Call ToList to exhaust the stream because we'll be iterating over this multiple times
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LazyInitializer.EnsureInitialized(ref _displayPreferences, ref _displayPreferencesInitialized, ref _displayPreferencesSyncLock, () => Kernel.Instance.DisplayPreferencesRepository.RetrieveDisplayPreferences(this).ToList());
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return _displayPreferences;
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}
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private set
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{
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_displayPreferences = value;
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if (value == null)
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{
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_displayPreferencesInitialized = false;
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}
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}
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}
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/// <summary>
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/// Gets the display prefs.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="createIfNull">if set to <c>true</c> [create if null].</param>
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/// <returns>DisplayPreferences.</returns>
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/// <exception cref="System.ArgumentNullException"></exception>
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public DisplayPreferences GetDisplayPreferences(User user, bool createIfNull)
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{
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if (user == null)
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{
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throw new ArgumentNullException();
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}
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if (DisplayPreferences == null)
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{
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if (!createIfNull)
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{
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return null;
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}
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AddOrUpdateDisplayPreferences(user, new DisplayPreferences { UserId = user.Id });
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}
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var data = DisplayPreferences.FirstOrDefault(u => u.UserId == user.Id);
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if (data == null && createIfNull)
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{
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data = new DisplayPreferences { UserId = user.Id };
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AddOrUpdateDisplayPreferences(user, data);
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}
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return data;
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}
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/// <summary>
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/// Adds the or update display prefs.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="data">The data.</param>
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/// <exception cref="System.ArgumentNullException"></exception>
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public void AddOrUpdateDisplayPreferences(User user, DisplayPreferences data)
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{
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if (user == null)
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{
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throw new ArgumentNullException();
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}
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if (data == null)
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{
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throw new ArgumentNullException();
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}
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data.UserId = user.Id;
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if (DisplayPreferences == null)
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{
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DisplayPreferences = new[] { data };
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}
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else
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{
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var list = DisplayPreferences.Where(u => u.UserId != user.Id).ToList();
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list.Add(data);
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DisplayPreferences = list;
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}
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}
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#region Indexing
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/// <summary>
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/// The _index by options
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/// </summary>
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private Dictionary<string, Func<User, IEnumerable<BaseItem>>> _indexByOptions;
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/// <summary>
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/// Dictionary of index options - consists of a display value and an indexing function
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/// which takes User as a parameter and returns an IEnum of BaseItem
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/// </summary>
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/// <value>The index by options.</value>
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[IgnoreDataMember]
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public Dictionary<string, Func<User, IEnumerable<BaseItem>>> IndexByOptions
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{
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get { return _indexByOptions ?? (_indexByOptions = GetIndexByOptions()); }
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}
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/// <summary>
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/// Returns the valid set of index by options for this folder type.
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/// Override or extend to modify.
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/// </summary>
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/// <returns>Dictionary{System.StringFunc{UserIEnumerable{BaseItem}}}.</returns>
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protected virtual Dictionary<string, Func<User, IEnumerable<BaseItem>>> GetIndexByOptions()
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{
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return new Dictionary<string, Func<User, IEnumerable<BaseItem>>> {
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{LocalizedStrings.Instance.GetString("NoneDispPref"), null},
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{LocalizedStrings.Instance.GetString("PerformerDispPref"), GetIndexByPerformer},
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{LocalizedStrings.Instance.GetString("GenreDispPref"), GetIndexByGenre},
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{LocalizedStrings.Instance.GetString("DirectorDispPref"), GetIndexByDirector},
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{LocalizedStrings.Instance.GetString("YearDispPref"), GetIndexByYear},
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{LocalizedStrings.Instance.GetString("OfficialRatingDispPref"), null},
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{LocalizedStrings.Instance.GetString("StudioDispPref"), GetIndexByStudio}
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};
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}
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/// <summary>
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/// Gets the index by actor.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByPerformer(User user)
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{
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return GetIndexByPerson(user, new List<string> { PersonType.Actor, PersonType.MusicArtist }, LocalizedStrings.Instance.GetString("PerformerDispPref"));
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}
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/// <summary>
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/// Gets the index by director.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByDirector(User user)
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{
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return GetIndexByPerson(user, new List<string> { PersonType.Director }, LocalizedStrings.Instance.GetString("DirectorDispPref"));
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}
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/// <summary>
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/// Gets the index by person.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="personTypes">The person types we should match on</param>
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/// <param name="indexName">Name of the index.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByPerson(User user, List<string> personTypes, string indexName)
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{
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// Even though this implementation means multiple iterations over the target list - it allows us to defer
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// the retrieval of the individual children for each index value until they are requested.
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using (new Profiler(indexName + " Index Build for " + Name, Logger))
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{
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// Put this in a local variable to avoid an implicitly captured closure
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var currentIndexName = indexName;
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var us = this;
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var candidates = RecursiveChildren.Where(i => i.IncludeInIndex && i.AllPeople != null).ToList();
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return candidates.AsParallel().SelectMany(i => i.AllPeople.Where(p => personTypes.Contains(p.Type))
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.Select(a => a.Name))
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.Distinct()
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.Select(i =>
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{
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try
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{
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return LibraryManager.GetPerson(i).Result;
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting person {0}", ex, i);
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return null;
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}
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catch (AggregateException ex)
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{
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Logger.ErrorException("Error getting person {0}", ex, i);
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return null;
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}
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})
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.Where(i => i != null)
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.Select(a => new IndexFolder(us, a,
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candidates.Where(i => i.AllPeople.Any(p => personTypes.Contains(p.Type) && p.Name.Equals(a.Name, StringComparison.OrdinalIgnoreCase))
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), currentIndexName));
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}
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}
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/// <summary>
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/// Gets the index by studio.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByStudio(User user)
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{
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// Even though this implementation means multiple iterations over the target list - it allows us to defer
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// the retrieval of the individual children for each index value until they are requested.
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using (new Profiler("Studio Index Build for " + Name, Logger))
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{
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var indexName = LocalizedStrings.Instance.GetString("StudioDispPref");
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var candidates = RecursiveChildren.Where(i => i.IncludeInIndex && i.Studios != null).ToList();
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return candidates.AsParallel().SelectMany(i => i.Studios)
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.Distinct()
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.Select(i =>
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{
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try
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{
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return LibraryManager.GetStudio(i).Result;
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting studio {0}", ex, i);
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return null;
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}
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catch (AggregateException ex)
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{
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Logger.ErrorException("Error getting studio {0}", ex, i);
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return null;
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}
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})
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.Where(i => i != null)
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.Select(ndx => new IndexFolder(this, ndx, candidates.Where(i => i.Studios.Any(s => s.Equals(ndx.Name, StringComparison.OrdinalIgnoreCase))), indexName));
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}
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}
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/// <summary>
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/// Gets the index by genre.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByGenre(User user)
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{
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// Even though this implementation means multiple iterations over the target list - it allows us to defer
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// the retrieval of the individual children for each index value until they are requested.
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using (new Profiler("Genre Index Build for " + Name, Logger))
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{
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var indexName = LocalizedStrings.Instance.GetString("GenreDispPref");
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//we need a copy of this so we don't double-recurse
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var candidates = RecursiveChildren.Where(i => i.IncludeInIndex && i.Genres != null).ToList();
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return candidates.AsParallel().SelectMany(i => i.Genres)
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.Distinct()
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.Select(i =>
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{
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try
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{
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return LibraryManager.GetGenre(i).Result;
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting genre {0}", ex, i);
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return null;
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}
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catch (AggregateException ex)
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{
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Logger.ErrorException("Error getting genre {0}", ex, i);
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return null;
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}
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})
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.Where(i => i != null)
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.Select(genre => new IndexFolder(this, genre, candidates.Where(i => i.Genres.Any(g => g.Equals(genre.Name, StringComparison.OrdinalIgnoreCase))), indexName)
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);
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}
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}
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/// <summary>
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/// Gets the index by year.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected IEnumerable<BaseItem> GetIndexByYear(User user)
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{
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// Even though this implementation means multiple iterations over the target list - it allows us to defer
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// the retrieval of the individual children for each index value until they are requested.
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using (new Profiler("Production Year Index Build for " + Name, Logger))
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{
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var indexName = LocalizedStrings.Instance.GetString("YearDispPref");
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//we need a copy of this so we don't double-recurse
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var candidates = RecursiveChildren.Where(i => i.IncludeInIndex && i.ProductionYear.HasValue).ToList();
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return candidates.AsParallel().Select(i => i.ProductionYear.Value)
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.Distinct()
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.Select(i =>
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{
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try
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{
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return LibraryManager.GetYear(i).Result;
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting year {0}", ex, i);
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return null;
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}
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catch (AggregateException ex)
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{
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Logger.ErrorException("Error getting year {0}", ex, i);
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return null;
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}
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})
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.Where(i => i != null)
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.Select(ndx => new IndexFolder(this, ndx, candidates.Where(i => i.ProductionYear == int.Parse(ndx.Name)), indexName));
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}
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}
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/// <summary>
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/// Returns the indexed children for this user from the cache. Caches them if not already there.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="indexBy">The index by.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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private IEnumerable<BaseItem> GetIndexedChildren(User user, string indexBy)
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{
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List<BaseItem> result;
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var cacheKey = user.Name + indexBy;
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IndexCache.TryGetValue(cacheKey, out result);
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if (result == null)
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{
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//not cached - cache it
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Func<User, IEnumerable<BaseItem>> indexing;
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IndexByOptions.TryGetValue(indexBy, out indexing);
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result = BuildIndex(indexBy, indexing, user);
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}
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return result;
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}
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/// <summary>
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/// Get the list of indexy by choices for this folder (localized).
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/// </summary>
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/// <value>The index by option strings.</value>
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[IgnoreDataMember]
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public IEnumerable<string> IndexByOptionStrings
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{
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get { return IndexByOptions.Keys; }
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}
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/// <summary>
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/// The index cache
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/// </summary>
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protected ConcurrentDictionary<string, List<BaseItem>> IndexCache = new ConcurrentDictionary<string, List<BaseItem>>(StringComparer.OrdinalIgnoreCase);
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/// <summary>
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/// Builds the index.
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/// </summary>
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/// <param name="indexKey">The index key.</param>
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/// <param name="indexFunction">The index function.</param>
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/// <param name="user">The user.</param>
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/// <returns>List{BaseItem}.</returns>
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protected virtual List<BaseItem> BuildIndex(string indexKey, Func<User, IEnumerable<BaseItem>> indexFunction, User user)
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{
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return indexFunction != null
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? IndexCache[user.Name + indexKey] = indexFunction(user).ToList()
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: null;
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}
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#endregion
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/// <summary>
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/// The children
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/// </summary>
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private ConcurrentBag<BaseItem> _children;
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/// <summary>
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/// The _children initialized
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/// </summary>
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private bool _childrenInitialized;
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/// <summary>
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/// The _children sync lock
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/// </summary>
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private object _childrenSyncLock = new object();
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/// <summary>
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/// Gets or sets the actual children.
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/// </summary>
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/// <value>The actual children.</value>
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protected virtual ConcurrentBag<BaseItem> ActualChildren
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{
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get
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{
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LazyInitializer.EnsureInitialized(ref _children, ref _childrenInitialized, ref _childrenSyncLock, LoadChildren);
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return _children;
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}
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private set
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{
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_children = value;
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if (value == null)
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{
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_childrenInitialized = false;
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}
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}
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}
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|
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/// <summary>
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/// thread-safe access to the actual children of this folder - without regard to user
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/// </summary>
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/// <value>The children.</value>
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[IgnoreDataMember]
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public ConcurrentBag<BaseItem> Children
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{
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get
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{
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return ActualChildren;
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}
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}
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/// <summary>
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/// thread-safe access to all recursive children of this folder - without regard to user
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/// </summary>
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/// <value>The recursive children.</value>
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[IgnoreDataMember]
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public IEnumerable<BaseItem> RecursiveChildren
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{
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get
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{
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foreach (var item in Children)
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{
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yield return item;
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|
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if (item.IsFolder)
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{
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var subFolder = (Folder)item;
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foreach (var subitem in subFolder.RecursiveChildren)
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{
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yield return subitem;
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}
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}
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}
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}
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}
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|
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/// <summary>
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/// Loads our children. Validation will occur externally.
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/// We want this sychronous.
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/// </summary>
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/// <returns>ConcurrentBag{BaseItem}.</returns>
|
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protected virtual ConcurrentBag<BaseItem> LoadChildren()
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{
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//just load our children from the repo - the library will be validated and maintained in other processes
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return new ConcurrentBag<BaseItem>(GetCachedChildren());
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}
|
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|
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/// <summary>
|
|
/// Gets or sets the current validation cancellation token source.
|
|
/// </summary>
|
|
/// <value>The current validation cancellation token source.</value>
|
|
private CancellationTokenSource CurrentValidationCancellationTokenSource { get; set; }
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|
|
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/// <summary>
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/// Validates that the children of the folder still exist
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/// </summary>
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/// <param name="progress">The progress.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="recursive">if set to <c>true</c> [recursive].</param>
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/// <returns>Task.</returns>
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public async Task ValidateChildren(IProgress<double> progress, CancellationToken cancellationToken, bool? recursive = null)
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{
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cancellationToken.ThrowIfCancellationRequested();
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// Cancel the current validation, if any
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if (CurrentValidationCancellationTokenSource != null)
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{
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CurrentValidationCancellationTokenSource.Cancel();
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}
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// Create an inner cancellation token. This can cancel all validations from this level on down,
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// but nothing above this
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var innerCancellationTokenSource = new CancellationTokenSource();
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try
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{
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CurrentValidationCancellationTokenSource = innerCancellationTokenSource;
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var linkedCancellationTokenSource = CancellationTokenSource.CreateLinkedTokenSource(innerCancellationTokenSource.Token, cancellationToken);
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await ValidateChildrenInternal(progress, linkedCancellationTokenSource.Token, recursive).ConfigureAwait(false);
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}
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catch (OperationCanceledException ex)
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{
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Logger.Info("ValidateChildren cancelled for " + Name);
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// If the outer cancelletion token in the cause for the cancellation, throw it
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if (cancellationToken.IsCancellationRequested && ex.CancellationToken == cancellationToken)
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{
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throw;
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}
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}
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finally
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{
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// Null out the token source
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if (CurrentValidationCancellationTokenSource == innerCancellationTokenSource)
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{
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CurrentValidationCancellationTokenSource = null;
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}
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innerCancellationTokenSource.Dispose();
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}
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}
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/// <summary>
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/// Compare our current children (presumably just read from the repo) with the current state of the file system and adjust for any changes
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/// ***Currently does not contain logic to maintain items that are unavailable in the file system***
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/// </summary>
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/// <param name="progress">The progress.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="recursive">if set to <c>true</c> [recursive].</param>
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/// <returns>Task.</returns>
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protected async virtual Task ValidateChildrenInternal(IProgress<double> progress, CancellationToken cancellationToken, bool? recursive = null)
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{
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// Nothing to do here
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if (LocationType != LocationType.FileSystem)
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{
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return;
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}
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cancellationToken.ThrowIfCancellationRequested();
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var changedArgs = new ChildrenChangedEventArgs(this);
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//get the current valid children from filesystem (or wherever)
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var nonCachedChildren = GetNonCachedChildren();
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if (nonCachedChildren == null) return; //nothing to validate
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progress.Report(5);
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//build a dictionary of the current children we have now by Id so we can compare quickly and easily
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var currentChildren = ActualChildren.ToDictionary(i => i.Id);
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//create a list for our validated children
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var validChildren = new ConcurrentBag<Tuple<BaseItem, bool>>();
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cancellationToken.ThrowIfCancellationRequested();
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Parallel.ForEach(nonCachedChildren, child =>
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{
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BaseItem currentChild;
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if (currentChildren.TryGetValue(child.Id, out currentChild))
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{
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currentChild.ResolveArgs = child.ResolveArgs;
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//existing item - check if it has changed
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if (currentChild.HasChanged(child))
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{
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EntityResolutionHelper.EnsureDates(currentChild, child.ResolveArgs);
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changedArgs.AddUpdatedItem(currentChild);
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validChildren.Add(new Tuple<BaseItem, bool>(currentChild, true));
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}
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else
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{
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validChildren.Add(new Tuple<BaseItem, bool>(currentChild, false));
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}
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}
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else
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{
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//brand new item - needs to be added
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changedArgs.AddNewItem(child);
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validChildren.Add(new Tuple<BaseItem, bool>(child, true));
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}
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});
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// If any items were added or removed....
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if (!changedArgs.ItemsAdded.IsEmpty || currentChildren.Count != validChildren.Count)
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{
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var newChildren = validChildren.Select(c => c.Item1).ToList();
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//that's all the new and changed ones - now see if there are any that are missing
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changedArgs.ItemsRemoved = currentChildren.Values.Except(newChildren).ToList();
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foreach (var item in changedArgs.ItemsRemoved)
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{
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Logger.Info("** " + item.Name + " Removed from library.");
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}
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var childrenReplaced = false;
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if (changedArgs.ItemsRemoved.Count > 0)
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{
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ActualChildren = new ConcurrentBag<BaseItem>(newChildren);
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childrenReplaced = true;
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}
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var saveTasks = new List<Task>();
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foreach (var item in changedArgs.ItemsAdded)
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{
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Logger.Info("** " + item.Name + " Added to library.");
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if (!childrenReplaced)
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{
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_children.Add(item);
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}
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saveTasks.Add(Kernel.Instance.ItemRepository.SaveItem(item, CancellationToken.None));
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}
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await Task.WhenAll(saveTasks).ConfigureAwait(false);
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//and save children in repo...
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Logger.Info("*** Saving " + newChildren.Count + " children for " + Name);
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await Kernel.Instance.ItemRepository.SaveChildren(Id, newChildren, CancellationToken.None).ConfigureAwait(false);
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}
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if (changedArgs.HasChange)
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{
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//force the indexes to rebuild next time
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IndexCache.Clear();
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//and fire event
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LibraryManager.ReportLibraryChanged(changedArgs);
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}
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progress.Report(15);
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cancellationToken.ThrowIfCancellationRequested();
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await RefreshChildren(validChildren, progress, cancellationToken, recursive).ConfigureAwait(false);
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progress.Report(100);
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}
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/// <summary>
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/// Refreshes the children.
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/// </summary>
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/// <param name="children">The children.</param>
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/// <param name="progress">The progress.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <param name="recursive">if set to <c>true</c> [recursive].</param>
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/// <returns>Task.</returns>
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private Task RefreshChildren(IEnumerable<Tuple<BaseItem, bool>> children, IProgress<double> progress, CancellationToken cancellationToken, bool? recursive)
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{
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var numComplete = 0;
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var list = children.ToList();
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var tasks = list.Select(tuple => Task.Run(async () =>
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{
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cancellationToken.ThrowIfCancellationRequested();
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var child = tuple.Item1;
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//refresh it
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await child.RefreshMetadata(cancellationToken, resetResolveArgs: child.IsFolder).ConfigureAwait(false);
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//and add it to our valid children
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//fire an added event...?
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//if it is a folder we need to validate its children as well
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// Refresh children if a folder and the item changed or recursive is set to true
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var refreshChildren = child.IsFolder && (tuple.Item2 || (recursive.HasValue && recursive.Value));
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if (refreshChildren)
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{
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// Don't refresh children if explicitly set to false
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if (recursive.HasValue && recursive.Value == false)
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{
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refreshChildren = false;
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}
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}
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if (refreshChildren)
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{
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cancellationToken.ThrowIfCancellationRequested();
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await ((Folder)child).ValidateChildren(new Progress<double> { }, cancellationToken, recursive: recursive).ConfigureAwait(false);
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}
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lock (progress)
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{
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numComplete++;
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double percent = numComplete;
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percent /= list.Count;
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progress.Report((85 * percent) + 15);
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}
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}));
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cancellationToken.ThrowIfCancellationRequested();
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return Task.WhenAll(tasks);
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}
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/// <summary>
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/// Get the children of this folder from the actual file system
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/// </summary>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected virtual IEnumerable<BaseItem> GetNonCachedChildren()
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{
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IEnumerable<WIN32_FIND_DATA> fileSystemChildren;
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try
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{
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fileSystemChildren = ResolveArgs.FileSystemChildren;
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting ResolveArgs for {0}", ex, Path);
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return new List<BaseItem> { };
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}
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return LibraryManager.ResolvePaths<BaseItem>(fileSystemChildren, this);
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}
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/// <summary>
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/// Get our children from the repo - stubbed for now
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/// </summary>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected virtual IEnumerable<BaseItem> GetCachedChildren()
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{
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return Kernel.Instance.ItemRepository.RetrieveChildren(this).Select(i => i is IByReferenceItem ? LibraryManager.GetOrAddByReferenceItem(i) : i);
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}
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/// <summary>
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/// Gets allowed children of an item
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="indexBy">The index by.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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/// <exception cref="System.ArgumentNullException"></exception>
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public virtual IEnumerable<BaseItem> GetChildren(User user, string indexBy = null)
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{
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if (user == null)
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{
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throw new ArgumentNullException();
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}
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//the true root should return our users root folder children
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if (IsPhysicalRoot) return user.RootFolder.GetChildren(user, indexBy);
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IEnumerable<BaseItem> result = null;
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if (!string.IsNullOrEmpty(indexBy))
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{
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result = GetIndexedChildren(user, indexBy);
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}
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// If indexed is false or the indexing function is null
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if (result == null)
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{
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result = ActualChildren.Where(c => c.IsVisible(user));
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}
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return result;
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}
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/// <summary>
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/// Gets allowed recursive children of an item
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/// </summary>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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/// <exception cref="System.ArgumentNullException"></exception>
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public IEnumerable<BaseItem> GetRecursiveChildren(User user)
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{
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if (user == null)
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{
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throw new ArgumentNullException();
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}
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foreach (var item in GetChildren(user))
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{
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yield return item;
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var subFolder = item as Folder;
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if (subFolder != null)
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{
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foreach (var subitem in subFolder.GetRecursiveChildren(user))
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{
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yield return subitem;
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}
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}
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}
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}
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/// <summary>
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/// Folders need to validate and refresh
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/// </summary>
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/// <returns>Task.</returns>
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public override async Task ChangedExternally()
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{
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await base.ChangedExternally().ConfigureAwait(false);
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var progress = new Progress<double> { };
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await ValidateChildren(progress, CancellationToken.None).ConfigureAwait(false);
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}
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/// <summary>
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/// Marks the item as either played or unplayed
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="wasPlayed">if set to <c>true</c> [was played].</param>
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/// <returns>Task.</returns>
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public override async Task SetPlayedStatus(User user, bool wasPlayed, IUserManager userManager)
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{
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await base.SetPlayedStatus(user, wasPlayed, userManager).ConfigureAwait(false);
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// Now sweep through recursively and update status
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var tasks = GetChildren(user).Select(c => c.SetPlayedStatus(user, wasPlayed, userManager));
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await Task.WhenAll(tasks).ConfigureAwait(false);
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}
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/// <summary>
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/// Finds an item by ID, recursively
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/// </summary>
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/// <param name="id">The id.</param>
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/// <param name="user">The user.</param>
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/// <returns>BaseItem.</returns>
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public override BaseItem FindItemById(Guid id, User user)
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{
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var result = base.FindItemById(id, user);
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if (result != null)
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{
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return result;
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}
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var children = user == null ? ActualChildren : GetChildren(user);
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foreach (var child in children)
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{
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result = child.FindItemById(id, user);
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if (result != null)
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{
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return result;
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}
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}
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return null;
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}
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/// <summary>
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/// Finds an item by path, recursively
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/// </summary>
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/// <param name="path">The path.</param>
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/// <returns>BaseItem.</returns>
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/// <exception cref="System.ArgumentNullException"></exception>
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public BaseItem FindByPath(string path)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException();
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}
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try
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{
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if (ResolveArgs.PhysicalLocations.Contains(path, StringComparer.OrdinalIgnoreCase))
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{
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return this;
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}
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting ResolveArgs for {0}", ex, Path);
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}
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//this should be functionally equivilent to what was here since it is IEnum and works on a thread-safe copy
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return RecursiveChildren.FirstOrDefault(i =>
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{
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try
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{
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return i.ResolveArgs.PhysicalLocations.Contains(path, StringComparer.OrdinalIgnoreCase);
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}
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catch (IOException ex)
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{
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Logger.ErrorException("Error getting ResolveArgs for {0}", ex, Path);
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return false;
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}
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});
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}
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}
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}
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