jellyfin/MediaBrowser.Providers/Manager/ItemImageProvider.cs
Luke Pulverenti 034c0b95b2 3.0.5768.1
2015-10-17 11:05:12 -04:00

580 lines
22 KiB
C#

using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Net;
using MediaBrowser.Model.Providers;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Threading;
using System.Threading.Tasks;
using CommonIO;
using MediaBrowser.Model.MediaInfo;
namespace MediaBrowser.Providers.Manager
{
public class ItemImageProvider
{
private readonly ILogger _logger;
private readonly IProviderManager _providerManager;
private readonly IServerConfigurationManager _config;
private readonly IFileSystem _fileSystem;
public ItemImageProvider(ILogger logger, IProviderManager providerManager, IServerConfigurationManager config, IFileSystem fileSystem)
{
_logger = logger;
_providerManager = providerManager;
_config = config;
_fileSystem = fileSystem;
}
public bool ValidateImages(IHasImages item, IEnumerable<IImageProvider> providers, IDirectoryService directoryService)
{
var hasChanges = false;
if (!(item is Photo))
{
var images = providers.OfType<ILocalImageFileProvider>()
.SelectMany(i => i.GetImages(item, directoryService))
.ToList();
if (MergeImages(item, images))
{
hasChanges = true;
}
}
return hasChanges;
}
public async Task<RefreshResult> RefreshImages(IHasImages item, IEnumerable<IImageProvider> imageProviders, ImageRefreshOptions refreshOptions, MetadataOptions savedOptions, CancellationToken cancellationToken)
{
if (refreshOptions.IsReplacingImage(ImageType.Backdrop))
{
ClearImages(item, ImageType.Backdrop);
}
if (refreshOptions.IsReplacingImage(ImageType.Screenshot))
{
ClearImages(item, ImageType.Screenshot);
}
var result = new RefreshResult { UpdateType = ItemUpdateType.None };
var providers = imageProviders.ToList();
var providerIds = new List<Guid>();
// In order to avoid duplicates, only download these if there are none already
var backdropLimit = savedOptions.GetLimit(ImageType.Backdrop);
var screenshotLimit = savedOptions.GetLimit(ImageType.Screenshot);
var downloadedImages = new List<ImageType>();
foreach (var provider in providers)
{
var remoteProvider = provider as IRemoteImageProvider;
if (remoteProvider != null)
{
await RefreshFromProvider(item, remoteProvider, refreshOptions, savedOptions, backdropLimit, screenshotLimit, downloadedImages, result, cancellationToken).ConfigureAwait(false);
providerIds.Add(provider.GetType().FullName.GetMD5());
continue;
}
var dynamicImageProvider = provider as IDynamicImageProvider;
if (dynamicImageProvider != null)
{
await RefreshFromProvider(item, dynamicImageProvider, refreshOptions, savedOptions, downloadedImages, result, cancellationToken).ConfigureAwait(false);
providerIds.Add(provider.GetType().FullName.GetMD5());
}
}
result.Providers = providerIds;
return result;
}
/// <summary>
/// Refreshes from provider.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="provider">The provider.</param>
/// <param name="refreshOptions">The refresh options.</param>
/// <param name="savedOptions">The saved options.</param>
/// <param name="downloadedImages">The downloaded images.</param>
/// <param name="result">The result.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task RefreshFromProvider(IHasImages item,
IDynamicImageProvider provider,
ImageRefreshOptions refreshOptions,
MetadataOptions savedOptions,
ICollection<ImageType> downloadedImages,
RefreshResult result,
CancellationToken cancellationToken)
{
try
{
var images = provider.GetSupportedImages(item);
foreach (var imageType in images)
{
if (!IsEnabled(savedOptions, imageType, item)) continue;
if (!item.HasImage(imageType) || (refreshOptions.IsReplacingImage(imageType) && !downloadedImages.Contains(imageType)))
{
_logger.Debug("Running {0} for {1}", provider.GetType().Name, item.Path ?? item.Name);
var response = await provider.GetImage(item, imageType, cancellationToken).ConfigureAwait(false);
if (response.HasImage)
{
if (!string.IsNullOrEmpty(response.Path))
{
if (response.Protocol == MediaProtocol.Http)
{
_logger.Debug("Setting image url into item {0}", item.Id);
item.SetImage(new ItemImageInfo
{
Path = response.Path,
Type = imageType
}, 0);
}
else
{
var mimeType = MimeTypes.GetMimeType(response.Path);
var stream = _fileSystem.GetFileStream(response.Path, FileMode.Open, FileAccess.Read, FileShare.Read, true);
await _providerManager.SaveImage(item, stream, mimeType, imageType, null, response.InternalCacheKey, cancellationToken).ConfigureAwait(false);
}
}
else
{
var mimeType = "image/" + response.Format.ToString().ToLower();
await _providerManager.SaveImage(item, response.Stream, mimeType, imageType, null, response.InternalCacheKey, cancellationToken).ConfigureAwait(false);
}
downloadedImages.Add(imageType);
result.UpdateType = result.UpdateType | ItemUpdateType.ImageUpdate;
}
}
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
result.ErrorMessage = ex.Message;
_logger.ErrorException("Error in {0}", ex, provider.Name);
}
}
/// <summary>
/// Image types that are only one per item
/// </summary>
private readonly ImageType[] _singularImages =
{
ImageType.Primary,
ImageType.Art,
ImageType.Banner,
ImageType.Box,
ImageType.BoxRear,
ImageType.Disc,
ImageType.Logo,
ImageType.Menu,
ImageType.Thumb
};
/// <summary>
/// Determines if an item already contains the given images
/// </summary>
/// <param name="item">The item.</param>
/// <param name="images">The images.</param>
/// <param name="savedOptions">The saved options.</param>
/// <param name="backdropLimit">The backdrop limit.</param>
/// <param name="screenshotLimit">The screenshot limit.</param>
/// <returns><c>true</c> if the specified item contains images; otherwise, <c>false</c>.</returns>
private bool ContainsImages(IHasImages item, List<ImageType> images, MetadataOptions savedOptions, int backdropLimit, int screenshotLimit)
{
if (_singularImages.Any(i => images.Contains(i) && !item.HasImage(i) && savedOptions.GetLimit(i) > 0))
{
return false;
}
if (images.Contains(ImageType.Backdrop) && item.GetImages(ImageType.Backdrop).Count() < backdropLimit)
{
return false;
}
if (images.Contains(ImageType.Screenshot) && item.GetImages(ImageType.Screenshot).Count() < screenshotLimit)
{
return false;
}
return true;
}
/// <summary>
/// Refreshes from provider.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="provider">The provider.</param>
/// <param name="refreshOptions">The refresh options.</param>
/// <param name="savedOptions">The saved options.</param>
/// <param name="backdropLimit">The backdrop limit.</param>
/// <param name="screenshotLimit">The screenshot limit.</param>
/// <param name="downloadedImages">The downloaded images.</param>
/// <param name="result">The result.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task.</returns>
private async Task RefreshFromProvider(IHasImages item,
IRemoteImageProvider provider,
ImageRefreshOptions refreshOptions,
MetadataOptions savedOptions,
int backdropLimit,
int screenshotLimit,
ICollection<ImageType> downloadedImages,
RefreshResult result,
CancellationToken cancellationToken)
{
try
{
if (!item.SupportsRemoteImageDownloading)
{
return;
}
if (!refreshOptions.ReplaceAllImages &&
refreshOptions.ReplaceImages.Count == 0 &&
ContainsImages(item, provider.GetSupportedImages(item).ToList(), savedOptions, backdropLimit, screenshotLimit))
{
return;
}
_logger.Debug("Running {0} for {1}", provider.GetType().Name, item.Path ?? item.Name);
var images = await _providerManager.GetAvailableRemoteImages(item, new RemoteImageQuery
{
ProviderName = provider.Name,
IncludeAllLanguages = false,
IncludeDisabledProviders = false,
}, cancellationToken).ConfigureAwait(false);
var list = images.ToList();
int minWidth;
foreach (var imageType in _singularImages)
{
if (!IsEnabled(savedOptions, imageType, item)) continue;
if (!item.HasImage(imageType) || (refreshOptions.IsReplacingImage(imageType) && !downloadedImages.Contains(imageType)))
{
minWidth = savedOptions.GetMinWidth(imageType);
var downloaded = await DownloadImage(item, provider, result, list, minWidth, imageType, cancellationToken).ConfigureAwait(false);
if (downloaded)
{
downloadedImages.Add(imageType);
}
}
}
if (!item.LockedFields.Contains(MetadataFields.Backdrops))
{
minWidth = savedOptions.GetMinWidth(ImageType.Backdrop);
await DownloadBackdrops(item, ImageType.Backdrop, backdropLimit, provider, result, list, minWidth, cancellationToken).ConfigureAwait(false);
}
if (!item.LockedFields.Contains(MetadataFields.Screenshots))
{
var hasScreenshots = item as IHasScreenshots;
if (hasScreenshots != null)
{
minWidth = savedOptions.GetMinWidth(ImageType.Screenshot);
await DownloadBackdrops(item, ImageType.Screenshot, screenshotLimit, provider, result, list, minWidth, cancellationToken).ConfigureAwait(false);
}
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
result.ErrorMessage = ex.Message;
_logger.ErrorException("Error in {0}", ex, provider.Name);
}
}
private bool IsEnabled(MetadataOptions options, ImageType type, IHasImages item)
{
if (type == ImageType.Backdrop)
{
if (item.LockedFields.Contains(MetadataFields.Backdrops))
{
return false;
}
}
else if (type == ImageType.Screenshot)
{
if (item.LockedFields.Contains(MetadataFields.Screenshots))
{
return false;
}
}
else
{
if (item.LockedFields.Contains(MetadataFields.Images))
{
return false;
}
}
return options.IsEnabled(type);
}
private void ClearImages(IHasImages item, ImageType type)
{
var deleted = false;
foreach (var image in item.GetImages(type).ToList())
{
// Delete the source file
var currentFile = new FileInfo(image.Path);
// Deletion will fail if the file is hidden so remove the attribute first
if (currentFile.Exists)
{
if ((currentFile.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden)
{
currentFile.Attributes &= ~FileAttributes.Hidden;
}
_fileSystem.DeleteFile(currentFile.FullName);
deleted = true;
}
}
if (deleted)
{
item.ValidateImages(new DirectoryService(_logger, _fileSystem));
}
}
public bool MergeImages(IHasImages item, List<LocalImageInfo> images)
{
var changed = false;
foreach (var type in _singularImages)
{
var image = images.FirstOrDefault(i => i.Type == type);
if (image != null)
{
var currentImage = item.GetImageInfo(type, 0);
if (currentImage == null)
{
item.SetImagePath(type, image.FileInfo);
changed = true;
}
else if (!string.Equals(currentImage.Path, image.FileInfo.FullName, StringComparison.OrdinalIgnoreCase))
{
item.SetImagePath(type, image.FileInfo);
changed = true;
}
else
{
currentImage.DateModified = _fileSystem.GetLastWriteTimeUtc(image.FileInfo);
}
}
else
{
var existing = item.GetImageInfo(type, 0);
if (existing != null && !_fileSystem.FileExists(existing.Path))
{
item.RemoveImage(existing);
changed = true;
}
}
}
if (UpdateMultiImages(item, images, ImageType.Backdrop))
{
changed = true;
}
var hasScreenshots = item as IHasScreenshots;
if (hasScreenshots != null)
{
if (UpdateMultiImages(item, images, ImageType.Screenshot))
{
changed = true;
}
}
return changed;
}
private bool UpdateMultiImages(IHasImages item, List<LocalImageInfo> images, ImageType type)
{
var changed = false;
var newImages = images.Where(i => i.Type == type).ToList();
var newImageFileInfos = newImages
.Select(i => i.FileInfo)
.ToList();
if (item.AddImages(type, newImageFileInfos))
{
changed = true;
}
return changed;
}
private async Task<bool> DownloadImage(IHasImages item,
IRemoteImageProvider provider,
RefreshResult result,
IEnumerable<RemoteImageInfo> images,
int minWidth,
ImageType type,
CancellationToken cancellationToken)
{
foreach (var image in images.Where(i => i.Type == type))
{
if (image.Width.HasValue && image.Width.Value < minWidth)
{
continue;
}
var url = image.Url;
if (EnableImageStub(item, type))
{
SaveImageStub(item, type, url);
result.UpdateType = result.UpdateType | ItemUpdateType.ImageUpdate;
return true;
}
try
{
var response = await provider.GetImageResponse(url, cancellationToken).ConfigureAwait(false);
await _providerManager.SaveImage(item, response.Content, response.ContentType, type, null, cancellationToken).ConfigureAwait(false);
result.UpdateType = result.UpdateType | ItemUpdateType.ImageUpdate;
return true;
}
catch (HttpException ex)
{
// Sometimes providers send back bad url's. Just move to the next image
if (ex.StatusCode.HasValue && ex.StatusCode.Value == HttpStatusCode.NotFound)
{
continue;
}
break;
}
}
return false;
}
private bool EnableImageStub(IHasImages item, ImageType type)
{
if (item.LocationType == LocationType.Remote || item.LocationType == LocationType.Virtual)
{
return true;
}
return true;
}
private void SaveImageStub(IHasImages item, ImageType imageType, string url)
{
var newIndex = item.AllowsMultipleImages(imageType) ? item.GetImages(imageType).Count() : 0;
item.SetImage(new ItemImageInfo
{
Path = url,
Type = imageType
}, newIndex);
}
private async Task DownloadBackdrops(IHasImages item, ImageType imageType, int limit, IRemoteImageProvider provider, RefreshResult result, IEnumerable<RemoteImageInfo> images, int minWidth, CancellationToken cancellationToken)
{
foreach (var image in images.Where(i => i.Type == imageType))
{
if (item.GetImages(imageType).Count() >= limit)
{
break;
}
if (image.Width.HasValue && image.Width.Value < minWidth)
{
continue;
}
var url = image.Url;
if (EnableImageStub(item, imageType))
{
SaveImageStub(item, imageType, url);
result.UpdateType = result.UpdateType | ItemUpdateType.ImageUpdate;
return;
}
try
{
var response = await provider.GetImageResponse(url, cancellationToken).ConfigureAwait(false);
// If there's already an image of the same size, skip it
if (response.ContentLength.HasValue)
{
try
{
if (item.GetImages(imageType).Any(i => new FileInfo(i.Path).Length == response.ContentLength.Value))
{
response.Content.Dispose();
continue;
}
}
catch (IOException ex)
{
_logger.ErrorException("Error examining images", ex);
}
}
await _providerManager.SaveImage(item, response.Content, response.ContentType, imageType, null, cancellationToken).ConfigureAwait(false);
result.UpdateType = result.UpdateType | ItemUpdateType.ImageUpdate;
}
catch (HttpException ex)
{
// Sometimes providers send back bad url's. Just move onto the next image
if (ex.StatusCode.HasValue && ex.StatusCode.Value == HttpStatusCode.NotFound)
{
continue;
}
break;
}
}
}
}
}