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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.Entities;
using MediaBrowser.Model.Progress;
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 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.FindItemById(id);
}
/// <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.Parse("5d1cf7fce25943b790d140095457a42b");
list.Add(user);
return list;
}
}
}
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