jellyfin-server/MediaBrowser.Controller/Kernel.cs
2012-08-12 00:03:19 -04:00

452 lines
15 KiB
C#

using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Common.Kernel;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Events;
using MediaBrowser.Controller.IO;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Resolvers;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Progress;
using MediaBrowser.Model.Users;
namespace MediaBrowser.Controller
{
public class Kernel : BaseKernel<ServerConfiguration>
{
public static Kernel Instance { get; private set; }
public ItemController ItemController { get; private set; }
public IEnumerable<User> Users { get; private set; }
public Folder RootFolder { get; private set; }
private DirectoryWatchers DirectoryWatchers { get; set; }
private string MediaRootFolderPath
{
get
{
return ApplicationPaths.RootFolderPath;
}
}
/// <summary>
/// Gets the list of currently registered entity resolvers
/// </summary>
[ImportMany(typeof(IBaseItemResolver))]
public IEnumerable<IBaseItemResolver> EntityResolvers { get; private set; }
/// <summary>
/// Creates a kernal based on a Data path, which is akin to our current programdata path
/// </summary>
public Kernel()
: base()
{
Instance = this;
ItemController = new ItemController();
DirectoryWatchers = new DirectoryWatchers();
ItemController.PreBeginResolvePath += ItemController_PreBeginResolvePath;
ItemController.BeginResolvePath += ItemController_BeginResolvePath;
}
public override void Init(IProgress<TaskProgress> progress)
{
base.Init(progress);
progress.Report(new TaskProgress() { Description = "Loading Users", PercentComplete = 15 });
ReloadUsers();
progress.Report(new TaskProgress() { Description = "Loading Media Library", PercentComplete = 20 });
ReloadRoot();
progress.Report(new TaskProgress() { Description = "Loading Complete", PercentComplete = 100 });
}
protected override void OnComposablePartsLoaded()
{
List<IBaseItemResolver> resolvers = EntityResolvers.ToList();
// Add the internal resolvers
resolvers.Add(new VideoResolver());
resolvers.Add(new AudioResolver());
resolvers.Add(new FolderResolver());
EntityResolvers = resolvers;
// The base class will start up all the plugins
base.OnComposablePartsLoaded();
}
/// <summary>
/// Fires when a path is about to be resolved, but before child folders and files
/// have been collected from the file system.
/// This gives us a chance to cancel it if needed, resulting in the path being ignored
/// </summary>
void ItemController_PreBeginResolvePath(object sender, PreBeginResolveEventArgs e)
{
if (e.IsHidden || e.IsSystemFile)
{
// Ignore hidden files and folders
e.Cancel = true;
}
else if (Path.GetFileName(e.Path).Equals("trailers", StringComparison.OrdinalIgnoreCase))
{
// Ignore any folders named "trailers"
e.Cancel = true;
}
}
/// <summary>
/// Fires when a path is about to be resolved, but after child folders and files
/// This gives us a chance to cancel it if needed, resulting in the path being ignored
/// </summary>
void ItemController_BeginResolvePath(object sender, ItemResolveEventArgs e)
{
if (e.IsFolder)
{
if (e.ContainsFile(".ignore"))
{
// Ignore any folders containing a file called .ignore
e.Cancel = true;
}
}
}
private void ReloadUsers()
{
Users = GetAllUsers();
}
/// <summary>
/// Reloads the root media folder
/// </summary>
public void ReloadRoot()
{
if (!Directory.Exists(MediaRootFolderPath))
{
Directory.CreateDirectory(MediaRootFolderPath);
}
DirectoryWatchers.Stop();
RootFolder = ItemController.GetItem(MediaRootFolderPath) as Folder;
DirectoryWatchers.Start();
}
private static MD5CryptoServiceProvider md5Provider = new MD5CryptoServiceProvider();
public static Guid GetMD5(string str)
{
lock (md5Provider)
{
return new Guid(md5Provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
}
}
public UserConfiguration GetUserConfiguration(Guid userId)
{
return Configuration.DefaultUserConfiguration;
}
public void ReloadItem(BaseItem item)
{
Folder folder = item as Folder;
if (folder != null && folder.IsRoot)
{
ReloadRoot();
}
else
{
if (!Directory.Exists(item.Path) && !File.Exists(item.Path))
{
ReloadItem(item.Parent);
return;
}
BaseItem newItem = ItemController.GetItem(item.Parent, item.Path);
List<BaseItem> children = item.Parent.Children.ToList();
int index = children.IndexOf(item);
children.RemoveAt(index);
children.Insert(index, newItem);
item.Parent.Children = children.ToArray();
}
}
/// <summary>
/// Finds a library item by Id
/// </summary>
public BaseItem GetItemById(Guid id)
{
if (id == Guid.Empty)
{
return RootFolder;
}
return RootFolder.FindById(id);
}
/// <summary>
/// Determines if an item is allowed for a given user
/// </summary>
public bool IsParentalAllowed(BaseItem item, Guid userId)
{
// not yet implemented
return true;
}
/// <summary>
/// Gets allowed children of an item
/// </summary>
public IEnumerable<BaseItem> GetParentalAllowedChildren(Folder folder, Guid userId)
{
return folder.Children.Where(i => IsParentalAllowed(i, userId));
}
/// <summary>
/// Gets allowed recursive children of an item
/// </summary>
public IEnumerable<BaseItem> GetParentalAllowedRecursiveChildren(Folder folder, Guid userId)
{
foreach (var item in GetParentalAllowedChildren(folder, userId))
{
yield return item;
var subFolder = item as Folder;
if (subFolder != null)
{
foreach (var subitem in GetParentalAllowedRecursiveChildren(subFolder, userId))
{
yield return subitem;
}
}
}
}
/// <summary>
/// Gets user data for an item, if there is any
/// </summary>
public UserItemData GetUserItemData(Guid userId, Guid itemId)
{
User user = Users.First(u => u.Id == userId);
if (user.ItemData.ContainsKey(itemId))
{
return user.ItemData[itemId];
}
return null;
}
/// <summary>
/// Gets all recently added items (recursive) within a folder, based on configuration and parental settings
/// </summary>
public IEnumerable<BaseItem> GetRecentlyAddedItems(Folder parent, Guid userId)
{
DateTime now = DateTime.Now;
UserConfiguration config = GetUserConfiguration(userId);
return GetParentalAllowedRecursiveChildren(parent, userId).Where(i => !(i is Folder) && (now - i.DateCreated).TotalDays < config.RecentItemDays);
}
/// <summary>
/// Gets all recently added unplayed items (recursive) within a folder, based on configuration and parental settings
/// </summary>
public IEnumerable<BaseItem> GetRecentlyAddedUnplayedItems(Folder parent, Guid userId)
{
return GetRecentlyAddedItems(parent, userId).Where(i =>
{
var userdata = GetUserItemData(userId, i.Id);
return userdata == null || userdata.PlayCount == 0;
});
}
/// <summary>
/// Gets all in-progress items (recursive) within a folder
/// </summary>
public IEnumerable<BaseItem> GetInProgressItems(Folder parent, Guid userId)
{
return GetParentalAllowedRecursiveChildren(parent, userId).Where(i =>
{
if (i is Folder)
{
return false;
}
var userdata = GetUserItemData(userId, i.Id);
return userdata != null && userdata.PlaybackPosition.Ticks > 0;
});
}
/// <summary>
/// Finds all recursive items within a top-level parent that contain the given studio and are allowed for the current user
/// </summary>
public IEnumerable<BaseItem> GetItemsWithStudio(Folder parent, string studio, Guid userId)
{
return GetParentalAllowedRecursiveChildren(parent, userId).Where(f => f.Studios != null && f.Studios.Any(s => s.Equals(studio, StringComparison.OrdinalIgnoreCase)));
}
/// <summary>
/// Finds all recursive items within a top-level parent that contain the given genre and are allowed for the current user
/// </summary>
public IEnumerable<BaseItem> GetItemsWithGenre(Folder parent, string genre, Guid userId)
{
return GetParentalAllowedRecursiveChildren(parent, userId).Where(f => f.Genres != null && f.Genres.Any(s => s.Equals(genre, StringComparison.OrdinalIgnoreCase)));
}
/// <summary>
/// Finds all recursive items within a top-level parent that contain the given person and are allowed for the current user
/// </summary>
public IEnumerable<BaseItem> GetItemsWithPerson(Folder parent, string personName, Guid userId)
{
return GetParentalAllowedRecursiveChildren(parent, userId).Where(f => f.People != null && f.People.Any(s => s.Name.Equals(personName, StringComparison.OrdinalIgnoreCase)));
}
/// <summary>
/// Gets all studios from all recursive children of a folder
/// The CategoryInfo class is used to keep track of the number of times each studio appears
/// </summary>
public IEnumerable<CategoryInfo<Studio>> GetAllStudios(Folder parent, Guid userId)
{
Dictionary<string, int> data = new Dictionary<string, int>();
// Get all the allowed recursive children
IEnumerable<BaseItem> allItems = Kernel.Instance.GetParentalAllowedRecursiveChildren(parent, userId);
foreach (var item in allItems)
{
// Add each studio from the item to the data dictionary
// If the studio already exists, increment the count
if (item.Studios == null)
{
continue;
}
foreach (string val in item.Studios)
{
if (!data.ContainsKey(val))
{
data.Add(val, 1);
}
else
{
data[val]++;
}
}
}
// Now go through the dictionary and create a Category for each studio
List<CategoryInfo<Studio>> list = new List<CategoryInfo<Studio>>();
foreach (string key in data.Keys)
{
// Get the original entity so that we can also supply the PrimaryImagePath
Studio entity = Kernel.Instance.ItemController.GetStudio(key);
if (entity != null)
{
list.Add(new CategoryInfo<Studio>()
{
Item = entity,
ItemCount = data[key]
});
}
}
return list;
}
/// <summary>
/// Gets all genres from all recursive children of a folder
/// The CategoryInfo class is used to keep track of the number of times each genres appears
/// </summary>
public IEnumerable<CategoryInfo<Genre>> GetAllGenres(Folder parent, Guid userId)
{
Dictionary<string, int> data = new Dictionary<string, int>();
// Get all the allowed recursive children
IEnumerable<BaseItem> allItems = Kernel.Instance.GetParentalAllowedRecursiveChildren(parent, userId);
foreach (var item in allItems)
{
// Add each genre from the item to the data dictionary
// If the genre already exists, increment the count
if (item.Genres == null)
{
continue;
}
foreach (string val in item.Genres)
{
if (!data.ContainsKey(val))
{
data.Add(val, 1);
}
else
{
data[val]++;
}
}
}
// Now go through the dictionary and create a Category for each genre
List<CategoryInfo<Genre>> list = new List<CategoryInfo<Genre>>();
foreach (string key in data.Keys)
{
// Get the original entity so that we can also supply the PrimaryImagePath
Genre entity = Kernel.Instance.ItemController.GetGenre(key);
if (entity != null)
{
list.Add(new CategoryInfo<Genre>()
{
Item = entity,
ItemCount = data[key]
});
}
}
return list;
}
/// <summary>
/// Gets all users within the system
/// </summary>
private IEnumerable<User> GetAllUsers()
{
List<User> list = new List<User>();
// Return a dummy user for now since all calls to get items requre a userId
User user = new User();
user.Name = "Default User";
user.Id = Guid.NewGuid();
list.Add(user);
return list;
}
}
}