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jellyfin/MediaBrowser.Providers/ImageFromMediaLocationProvi...

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using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers
{
/// <summary>
/// Provides images for all types by looking for standard images - folder, backdrop, logo, etc.
/// </summary>
public class ImageFromMediaLocationProvider : BaseMetadataProvider
{
public ImageFromMediaLocationProvider(ILogManager logManager, IServerConfigurationManager configurationManager)
: base(logManager, configurationManager)
{
}
/// <summary>
/// Supportses the specified item.
/// </summary>
/// <param name="item">The item.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
public override bool Supports(BaseItem item)
{
return item.LocationType == LocationType.FileSystem && item.ResolveArgs.IsDirectory;
}
/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
public override MetadataProviderPriority Priority
{
get { return MetadataProviderPriority.First; }
}
/// <summary>
/// Returns true or false indicating if the provider should refresh when the contents of it's directory changes
/// </summary>
/// <value><c>true</c> if [refresh on file system stamp change]; otherwise, <c>false</c>.</value>
protected override bool RefreshOnFileSystemStampChange
{
get
{
return true;
}
}
/// <summary>
/// Fetches metadata and returns true or false indicating if any work that requires persistence was done
/// </summary>
/// <param name="item">The item.</param>
/// <param name="force">if set to <c>true</c> [force].</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{System.Boolean}.</returns>
public override Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
// Make sure current image paths still exist
ValidateImages(item);
cancellationToken.ThrowIfCancellationRequested();
// Make sure current backdrop paths still exist
ValidateBackdrops(item);
cancellationToken.ThrowIfCancellationRequested();
PopulateBaseItemImages(item);
SetLastRefreshed(item, DateTime.UtcNow);
return TrueTaskResult;
}
/// <summary>
/// Validates that images within the item are still on the file system
/// </summary>
/// <param name="item">The item.</param>
private void ValidateImages(BaseItem item)
{
// Only validate paths from the same directory - need to copy to a list because we are going to potentially modify the collection below
var deletedKeys = item.Images.ToList().Where(image =>
{
var path = image.Value;
return IsInMetaLocation(item, path) && item.ResolveArgs.GetMetaFileByPath(path) == null;
}).Select(i => i.Key).ToList();
// Now remove them from the dictionary
foreach (var key in deletedKeys)
{
item.Images.Remove(key);
}
}
/// <summary>
/// Validates that backdrops within the item are still on the file system
/// </summary>
/// <param name="item">The item.</param>
private void ValidateBackdrops(BaseItem item)
{
if (item.BackdropImagePaths == null)
{
return;
}
// Only validate paths from the same directory - need to copy to a list because we are going to potentially modify the collection below
var deletedImages = item.BackdropImagePaths.Where(path => IsInMetaLocation(item, path) && item.ResolveArgs.GetMetaFileByPath(path) == null).ToList();
// Now remove them from the dictionary
foreach (var path in deletedImages)
{
item.BackdropImagePaths.Remove(path);
}
}
/// <summary>
/// Determines whether [is in same directory] [the specified item].
/// </summary>
/// <param name="item">The item.</param>
/// <param name="path">The path.</param>
/// <returns><c>true</c> if [is in same directory] [the specified item]; otherwise, <c>false</c>.</returns>
private bool IsInMetaLocation(BaseItem item, string path)
{
return string.Equals(Path.GetDirectoryName(path), item.MetaLocation, StringComparison.OrdinalIgnoreCase);
}
/// <summary>
/// Gets the image.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="filenameWithoutExtension">The filename without extension.</param>
/// <returns>FileSystemInfo.</returns>
protected virtual FileSystemInfo GetImage(BaseItem item, string filenameWithoutExtension)
{
return BaseItem.SupportedImageExtensions.Select(i => item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.ResolveArgs.Path, filenameWithoutExtension + i))).FirstOrDefault(i => i != null);
}
/// <summary>
/// Fills in image paths based on files win the folder
/// </summary>
/// <param name="item">The item.</param>
private void PopulateBaseItemImages(BaseItem item)
{
// Primary Image
var image = GetImage(item, "folder") ??
GetImage(item, "poster") ??
GetImage(item, "cover") ??
GetImage(item, "default");
// Look for a file with the same name as the item
if (image == null)
{
var name = Path.GetFileNameWithoutExtension(item.Path);
if (!string.IsNullOrEmpty(name))
{
image = GetImage(item, name);
}
}
if (image != null)
{
item.SetImage(ImageType.Primary, image.FullName);
}
// Logo Image
image = GetImage(item, "logo");
if (image != null)
{
item.SetImage(ImageType.Logo, image.FullName);
}
// Banner Image
image = GetImage(item, "banner");
if (image != null)
{
item.SetImage(ImageType.Banner, image.FullName);
}
// Clearart
image = GetImage(item, "clearart");
if (image != null)
{
item.SetImage(ImageType.Art, image.FullName);
}
// Thumbnail Image
image = GetImage(item, "thumb");
if (image != null)
{
item.SetImage(ImageType.Thumb, image.FullName);
}
// Box Image
image = GetImage(item, "box");
if (image != null)
{
item.SetImage(ImageType.Box, image.FullName);
}
// BoxRear Image
image = GetImage(item, "boxrear");
if (image != null)
{
item.SetImage(ImageType.BoxRear, image.FullName);
}
// Thumbnail Image
image = GetImage(item, "menu");
if (image != null)
{
item.SetImage(ImageType.Menu, image.FullName);
}
// Backdrop Image
PopulateBackdrops(item);
// Screenshot Image
image = GetImage(item, "screenshot");
var screenshotFiles = new List<string>();
if (image != null)
{
screenshotFiles.Add(image.FullName);
}
var unfound = 0;
for (var i = 1; i <= 20; i++)
{
// Screenshot Image
image = GetImage(item, "screenshot" + i);
if (image != null)
{
screenshotFiles.Add(image.FullName);
}
else
{
unfound++;
if (unfound >= 3)
{
break;
}
}
}
if (screenshotFiles.Count > 0)
{
item.ScreenshotImagePaths = screenshotFiles;
}
}
/// <summary>
/// Populates the backdrops.
/// </summary>
/// <param name="item">The item.</param>
private void PopulateBackdrops(BaseItem item)
{
var backdropFiles = new List<string>();
PopulateBackdrops(item, backdropFiles, "backdrop", "backdrop");
// Support plex/xbmc conventions
PopulateBackdrops(item, backdropFiles, "fanart", "fanart-");
PopulateBackdrops(item, backdropFiles, "background", "background-");
if (backdropFiles.Count > 0)
{
item.BackdropImagePaths = backdropFiles;
}
}
/// <summary>
/// Populates the backdrops.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="backdropFiles">The backdrop files.</param>
/// <param name="filename">The filename.</param>
/// <param name="numberedSuffix">The numbered suffix.</param>
private void PopulateBackdrops(BaseItem item, List<string> backdropFiles, string filename, string numberedSuffix)
{
var image = GetImage(item, filename);
if (image != null)
{
backdropFiles.Add(image.FullName);
}
var unfound = 0;
for (var i = 1; i <= 20; i++)
{
// Backdrop Image
image = GetImage(item, numberedSuffix + i);
if (image != null)
{
backdropFiles.Add(image.FullName);
}
else
{
unfound++;
if (unfound >= 3)
{
break;
}
}
}
}
}
}