jellyfin/MediaBrowser.Providers/Manager/ImageSaver.cs
2014-01-28 20:47:47 -05:00

602 lines
23 KiB
C#

using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.Manager
{
/// <summary>
/// Class ImageSaver
/// </summary>
public class ImageSaver
{
private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
/// <summary>
/// The _config
/// </summary>
private readonly IServerConfigurationManager _config;
/// <summary>
/// The remote image cache
/// </summary>
private readonly FileSystemRepository _remoteImageCache;
/// <summary>
/// The _directory watchers
/// </summary>
private readonly ILibraryMonitor _libraryMonitor;
private readonly IFileSystem _fileSystem;
private readonly ILogger _logger;
/// <summary>
/// Initializes a new instance of the <see cref="ImageSaver"/> class.
/// </summary>
/// <param name="config">The config.</param>
/// <param name="libraryMonitor">The directory watchers.</param>
public ImageSaver(IServerConfigurationManager config, ILibraryMonitor libraryMonitor, IFileSystem fileSystem, ILogger logger)
{
_config = config;
_libraryMonitor = libraryMonitor;
_fileSystem = fileSystem;
_logger = logger;
_remoteImageCache = new FileSystemRepository(config.ApplicationPaths.DownloadedImagesDataPath);
}
/// <summary>
/// Saves the image.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="source">The source.</param>
/// <param name="mimeType">Type of the MIME.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <param name="sourceUrl">The source URL.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
/// <exception cref="System.ArgumentNullException">mimeType</exception>
public async Task SaveImage(BaseItem item, Stream source, string mimeType, ImageType type, int? imageIndex, string sourceUrl, CancellationToken cancellationToken)
{
if (string.IsNullOrEmpty(mimeType))
{
throw new ArgumentNullException("mimeType");
}
var saveLocally = item.IsSaveLocalMetadataEnabled() && item.Parent != null && !(item is Audio);
if (item is IItemByName || item is User)
{
saveLocally = true;
}
if (type != ImageType.Primary && item is Episode)
{
saveLocally = false;
}
var locationType = item.LocationType;
if (locationType == LocationType.Remote || locationType == LocationType.Virtual)
{
saveLocally = false;
var season = item as Season;
// If season is virtual under a physical series, save locally if using compatible convention
if (season != null && _config.Configuration.ImageSavingConvention == ImageSavingConvention.Compatible)
{
var series = season.Series;
if (series != null)
{
var seriesLocationType = series.LocationType;
if (seriesLocationType == LocationType.FileSystem || seriesLocationType == LocationType.Offline)
{
saveLocally = true;
}
}
}
}
if (type == ImageType.Backdrop && imageIndex == null)
{
imageIndex = item.BackdropImagePaths.Count;
}
else if (type == ImageType.Screenshot && imageIndex == null)
{
var hasScreenshots = (IHasScreenshots)item;
imageIndex = hasScreenshots.ScreenshotImagePaths.Count;
}
var index = imageIndex ?? 0;
var paths = GetSavePaths(item, type, imageIndex, mimeType, saveLocally);
// If there are more than one output paths, the stream will need to be seekable
if (paths.Length > 1 && !source.CanSeek)
{
var memoryStream = new MemoryStream();
using (source)
{
await source.CopyToAsync(memoryStream).ConfigureAwait(false);
}
memoryStream.Position = 0;
source = memoryStream;
}
var currentPath = GetCurrentImagePath(item, type, index);
using (source)
{
var isFirst = true;
foreach (var path in paths)
{
// Seek back to the beginning
if (!isFirst)
{
source.Position = 0;
}
await SaveImageToLocation(source, path, cancellationToken).ConfigureAwait(false);
isFirst = false;
}
}
// Set the path into the item
SetImagePath(item, type, imageIndex, paths[0], sourceUrl);
// Delete the current path
if (!string.IsNullOrEmpty(currentPath) && !paths.Contains(currentPath, StringComparer.OrdinalIgnoreCase))
{
_libraryMonitor.ReportFileSystemChangeBeginning(currentPath);
try
{
var currentFile = new FileInfo(currentPath);
// This will fail if the file is hidden
if (currentFile.Exists)
{
if ((currentFile.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden)
{
currentFile.Attributes &= ~FileAttributes.Hidden;
}
currentFile.Delete();
}
}
finally
{
_libraryMonitor.ReportFileSystemChangeComplete(currentPath, false);
}
}
}
/// <summary>
/// Saves the image to location.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="path">The path.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task SaveImageToLocation(Stream source, string path, CancellationToken cancellationToken)
{
_logger.Debug("Saving image to {0}", path);
var parentFolder = Path.GetDirectoryName(path);
_libraryMonitor.ReportFileSystemChangeBeginning(path);
_libraryMonitor.ReportFileSystemChangeBeginning(parentFolder);
try
{
Directory.CreateDirectory(Path.GetDirectoryName(path));
// If the file is currently hidden we'll have to remove that or the save will fail
var file = new FileInfo(path);
// This will fail if the file is hidden
if (file.Exists)
{
if ((file.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden)
{
file.Attributes &= ~FileAttributes.Hidden;
}
}
using (var fs = _fileSystem.GetFileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read, true))
{
await source.CopyToAsync(fs, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
}
}
finally
{
_libraryMonitor.ReportFileSystemChangeComplete(path, false);
_libraryMonitor.ReportFileSystemChangeComplete(parentFolder, false);
}
}
/// <summary>
/// Gets the save paths.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <param name="mimeType">Type of the MIME.</param>
/// <param name="saveLocally">if set to <c>true</c> [save locally].</param>
/// <returns>IEnumerable{System.String}.</returns>
private string[] GetSavePaths(BaseItem item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
{
if (_config.Configuration.ImageSavingConvention == ImageSavingConvention.Legacy || !saveLocally)
{
return new[] { GetStandardSavePath(item, type, imageIndex, mimeType, saveLocally) };
}
return GetCompatibleSavePaths(item, type, imageIndex, mimeType);
}
/// <summary>
/// Gets the current image path.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentNullException">
/// imageIndex
/// or
/// imageIndex
/// </exception>
private string GetCurrentImagePath(IHasImages item, ImageType type, int imageIndex)
{
return item.GetImagePath(type, imageIndex);
}
/// <summary>
/// Sets the image path.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <param name="path">The path.</param>
/// <param name="sourceUrl">The source URL.</param>
/// <exception cref="System.ArgumentNullException">imageIndex
/// or
/// imageIndex</exception>
private void SetImagePath(BaseItem item, ImageType type, int? imageIndex, string path, string sourceUrl)
{
switch (type)
{
case ImageType.Screenshot:
if (!imageIndex.HasValue)
{
throw new ArgumentNullException("imageIndex");
}
var hasScreenshots = (IHasScreenshots)item;
if (hasScreenshots.ScreenshotImagePaths.Count > imageIndex.Value)
{
hasScreenshots.ScreenshotImagePaths[imageIndex.Value] = path;
}
else if (!hasScreenshots.ScreenshotImagePaths.Contains(path, StringComparer.OrdinalIgnoreCase))
{
hasScreenshots.ScreenshotImagePaths.Add(path);
}
break;
case ImageType.Backdrop:
if (!imageIndex.HasValue)
{
throw new ArgumentNullException("imageIndex");
}
if (item.BackdropImagePaths.Count > imageIndex.Value)
{
item.BackdropImagePaths[imageIndex.Value] = path;
}
else if (!item.BackdropImagePaths.Contains(path, StringComparer.OrdinalIgnoreCase))
{
item.BackdropImagePaths.Add(path);
}
if (string.IsNullOrEmpty(sourceUrl))
{
item.RemoveImageSourceForPath(path);
}
else
{
item.AddImageSource(path, sourceUrl);
}
break;
default:
item.SetImagePath(type, path);
break;
}
}
/// <summary>
/// Gets the save path.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <param name="mimeType">Type of the MIME.</param>
/// <param name="saveLocally">if set to <c>true</c> [save locally].</param>
/// <returns>System.String.</returns>
/// <exception cref="System.ArgumentNullException">
/// imageIndex
/// or
/// imageIndex
/// </exception>
private string GetStandardSavePath(BaseItem item, ImageType type, int? imageIndex, string mimeType, bool saveLocally)
{
string filename;
switch (type)
{
case ImageType.Art:
filename = "clearart";
break;
case ImageType.BoxRear:
filename = "back";
break;
case ImageType.Disc:
filename = item is MusicAlbum ? "cdart" : "disc";
break;
case ImageType.Primary:
filename = item is Episode ? Path.GetFileNameWithoutExtension(item.Path) : "folder";
break;
case ImageType.Backdrop:
if (!imageIndex.HasValue)
{
throw new ArgumentNullException("imageIndex");
}
filename = GetBackdropSaveFilename(item.BackdropImagePaths, "backdrop", "backdrop", imageIndex.Value);
break;
case ImageType.Screenshot:
if (!imageIndex.HasValue)
{
throw new ArgumentNullException("imageIndex");
}
var hasScreenshots = (IHasScreenshots)item;
filename = GetBackdropSaveFilename(hasScreenshots.ScreenshotImagePaths, "screenshot", "screenshot", imageIndex.Value);
break;
default:
filename = type.ToString().ToLower();
break;
}
var extension = mimeType.Split('/').Last();
if (string.Equals(extension, "jpeg", StringComparison.OrdinalIgnoreCase))
{
extension = "jpg";
}
extension = "." + extension.ToLower();
string path = null;
if (saveLocally)
{
if (item.IsInMixedFolder && !(item is Episode))
{
path = GetSavePathForItemInMixedFolder(item, type, filename, extension);
}
if (string.IsNullOrEmpty(path))
{
path = Path.Combine(item.MetaLocation, filename + extension);
}
}
// None of the save local conditions passed, so store it in our internal folders
if (string.IsNullOrEmpty(path))
{
path = _remoteImageCache.GetResourcePath(item.GetType().FullName + item.Id, filename + extension);
}
return path;
}
private string GetBackdropSaveFilename(IEnumerable<string> images, string zeroIndexFilename, string numberedIndexPrefix, int index)
{
if (index == 0)
{
return zeroIndexFilename;
}
var filenames = images.Select(Path.GetFileNameWithoutExtension).ToList();
var current = index;
while (filenames.Contains(numberedIndexPrefix + current.ToString(UsCulture), StringComparer.OrdinalIgnoreCase))
{
current++;
}
return numberedIndexPrefix + current.ToString(UsCulture);
}
/// <summary>
/// Gets the compatible save paths.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageIndex">Index of the image.</param>
/// <param name="mimeType">Type of the MIME.</param>
/// <returns>IEnumerable{System.String}.</returns>
/// <exception cref="System.ArgumentNullException">imageIndex</exception>
private string[] GetCompatibleSavePaths(BaseItem item, ImageType type, int? imageIndex, string mimeType)
{
var season = item as Season;
var extension = mimeType.Split('/').Last();
if (string.Equals(extension, "jpeg", StringComparison.OrdinalIgnoreCase))
{
extension = "jpg";
}
extension = "." + extension.ToLower();
// Backdrop paths
if (type == ImageType.Backdrop)
{
if (!imageIndex.HasValue)
{
throw new ArgumentNullException("imageIndex");
}
if (imageIndex.Value == 0)
{
if (item.IsInMixedFolder)
{
return new[] { GetSavePathForItemInMixedFolder(item, type, "fanart", extension) };
}
if (season != null && item.IndexNumber.HasValue)
{
var seriesFolder = season.SeriesPath;
var seasonMarker = item.IndexNumber.Value == 0
? "-specials"
: item.IndexNumber.Value.ToString("00", UsCulture);
var imageFilename = "season" + seasonMarker + "-fanart" + extension;
return new[] { Path.Combine(seriesFolder, imageFilename) };
}
return new[]
{
Path.Combine(item.MetaLocation, "fanart" + extension)
};
}
var outputIndex = imageIndex.Value;
if (item.IsInMixedFolder)
{
return new[] { GetSavePathForItemInMixedFolder(item, type, "fanart" + outputIndex.ToString(UsCulture), extension) };
}
var extraFanartFilename = GetBackdropSaveFilename(item.BackdropImagePaths, "fanart", "fanart", outputIndex);
return new[]
{
Path.Combine(item.MetaLocation, "extrafanart", extraFanartFilename + extension),
Path.Combine(item.MetaLocation, "extrathumbs", "thumb" + outputIndex.ToString(UsCulture) + extension)
};
}
if (type == ImageType.Primary)
{
if (season != null && item.IndexNumber.HasValue)
{
var seriesFolder = season.SeriesPath;
var seasonMarker = item.IndexNumber.Value == 0
? "-specials"
: item.IndexNumber.Value.ToString("00", UsCulture);
var imageFilename = "season" + seasonMarker + "-poster" + extension;
return new[] { Path.Combine(seriesFolder, imageFilename) };
}
if (item is Episode)
{
var seasonFolder = Path.GetDirectoryName(item.Path);
var imageFilename = Path.GetFileNameWithoutExtension(item.Path) + "-thumb" + extension;
return new[] { Path.Combine(seasonFolder, imageFilename) };
}
if (item.IsInMixedFolder || item is MusicVideo)
{
return new[] { GetSavePathForItemInMixedFolder(item, type, string.Empty, extension) };
}
if (item is MusicAlbum || item is MusicArtist)
{
return new[] { Path.Combine(item.MetaLocation, "folder" + extension) };
}
return new[] { Path.Combine(item.MetaLocation, "poster" + extension) };
}
if (type == ImageType.Banner)
{
if (season != null && item.IndexNumber.HasValue)
{
var seriesFolder = season.SeriesPath;
var seasonMarker = item.IndexNumber.Value == 0
? "-specials"
: item.IndexNumber.Value.ToString("00", UsCulture);
var imageFilename = "season" + seasonMarker + "-banner" + extension;
return new[] { Path.Combine(seriesFolder, imageFilename) };
}
}
if (type == ImageType.Thumb)
{
if (season != null && item.IndexNumber.HasValue)
{
var seriesFolder = season.SeriesPath;
var seasonMarker = item.IndexNumber.Value == 0
? "-specials"
: item.IndexNumber.Value.ToString("00", UsCulture);
var imageFilename = "season" + seasonMarker + "-landscape" + extension;
return new[] { Path.Combine(seriesFolder, imageFilename) };
}
if (item.IsInMixedFolder)
{
return new[] { GetSavePathForItemInMixedFolder(item, type, "landscape", extension) };
}
return new[] { Path.Combine(item.MetaLocation, "landscape" + extension) };
}
// All other paths are the same
return new[] { GetStandardSavePath(item, type, imageIndex, mimeType, true) };
}
/// <summary>
/// Gets the save path for item in mixed folder.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="type">The type.</param>
/// <param name="imageFilename">The image filename.</param>
/// <param name="extension">The extension.</param>
/// <returns>System.String.</returns>
private string GetSavePathForItemInMixedFolder(IHasImages item, ImageType type, string imageFilename, string extension)
{
if (type == ImageType.Primary)
{
imageFilename = "poster";
}
var folder = Path.GetDirectoryName(item.Path);
return Path.Combine(folder, Path.GetFileNameWithoutExtension(item.Path) + "-" + imageFilename + extension);
}
}
}