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jellyfin/MediaBrowser.Providers/Manager/ProviderManager.cs

831 lines
31 KiB

using MediaBrowser.Common.IO;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Entities.TV;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Configuration;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Providers;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.Manager
{
/// <summary>
/// Class ProviderManager
/// </summary>
public class ProviderManager : IProviderManager
{
/// <summary>
/// The _logger
/// </summary>
private readonly ILogger _logger;
/// <summary>
/// The _HTTP client
/// </summary>
private readonly IHttpClient _httpClient;
/// <summary>
/// The _directory watchers
/// </summary>
private readonly ILibraryMonitor _libraryMonitor;
/// <summary>
/// Gets or sets the configuration manager.
/// </summary>
/// <value>The configuration manager.</value>
private IServerConfigurationManager ConfigurationManager { get; set; }
private IImageProvider[] ImageProviders { get; set; }
private readonly IFileSystem _fileSystem;
private IMetadataService[] _metadataServices = { };
private IItemIdentityProvider[] _identityProviders = { };
private IItemIdentityConverter[] _identityConverters = { };
private IMetadataProvider[] _metadataProviders = { };
private IEnumerable<IMetadataSaver> _savers;
private IImageSaver[] _imageSavers;
private IExternalId[] _externalIds;
/// <summary>
/// Initializes a new instance of the <see cref="ProviderManager" /> class.
/// </summary>
/// <param name="httpClient">The HTTP client.</param>
/// <param name="configurationManager">The configuration manager.</param>
/// <param name="libraryMonitor">The directory watchers.</param>
/// <param name="logManager">The log manager.</param>
/// <param name="fileSystem">The file system.</param>
public ProviderManager(IHttpClient httpClient, IServerConfigurationManager configurationManager, ILibraryMonitor libraryMonitor, ILogManager logManager, IFileSystem fileSystem)
{
_logger = logManager.GetLogger("ProviderManager");
_httpClient = httpClient;
ConfigurationManager = configurationManager;
_libraryMonitor = libraryMonitor;
_fileSystem = fileSystem;
}
/// <summary>
/// Adds the metadata providers.
/// </summary>
/// <param name="imageProviders">The image providers.</param>
/// <param name="metadataServices">The metadata services.</param>
/// <param name="identityProviders">The identity providers.</param>
/// <param name="identityConverters">The identity converters.</param>
/// <param name="metadataProviders">The metadata providers.</param>
/// <param name="metadataSavers">The metadata savers.</param>
/// <param name="imageSavers">The image savers.</param>
/// <param name="externalIds">The external ids.</param>
public void AddParts(IEnumerable<IImageProvider> imageProviders, IEnumerable<IMetadataService> metadataServices,
IEnumerable<IItemIdentityProvider> identityProviders, IEnumerable<IItemIdentityConverter> identityConverters,
IEnumerable<IMetadataProvider> metadataProviders, IEnumerable<IMetadataSaver> metadataSavers,
IEnumerable<IImageSaver> imageSavers, IEnumerable<IExternalId> externalIds)
{
ImageProviders = imageProviders.ToArray();
_metadataServices = metadataServices.OrderBy(i => i.Order).ToArray();
_identityProviders = identityProviders.ToArray();
_identityConverters = identityConverters.ToArray();
_metadataProviders = metadataProviders.ToArray();
_savers = metadataSavers.ToArray();
_imageSavers = imageSavers.ToArray();
_externalIds = externalIds.OrderBy(i => i.Name).ToArray();
}
public Task RefreshMetadata(IHasMetadata item, MetadataRefreshOptions options, CancellationToken cancellationToken)
{
var service = _metadataServices.FirstOrDefault(i => i.CanRefresh(item));
if (service != null)
{
return service.RefreshMetadata(item, options, cancellationToken);
}
_logger.Error("Unable to find a metadata service for item of type " + item.GetType().Name);
return Task.FromResult(true);
}
public async Task SaveImage(IHasImages item, string url, SemaphoreSlim resourcePool, ImageType type, int? imageIndex, CancellationToken cancellationToken)
{
var response = await _httpClient.GetResponse(new HttpRequestOptions
{
CancellationToken = cancellationToken,
ResourcePool = resourcePool,
Url = url
}).ConfigureAwait(false);
await SaveImage(item, response.Content, response.ContentType, type, imageIndex, cancellationToken)
.ConfigureAwait(false);
}
public Task SaveImage(IHasImages item, Stream source, string mimeType, ImageType type, int? imageIndex, CancellationToken cancellationToken)
{
return new ImageSaver(ConfigurationManager, _libraryMonitor, _fileSystem, _logger).SaveImage(item, source, mimeType, type, imageIndex, cancellationToken);
}
public async Task<IEnumerable<RemoteImageInfo>> GetAvailableRemoteImages(IHasImages item, RemoteImageQuery query, CancellationToken cancellationToken)
{
var providers = GetRemoteImageProviders(item, query.IncludeDisabledProviders);
if (!string.IsNullOrEmpty(query.ProviderName))
{
var providerName = query.ProviderName;
providers = providers.Where(i => string.Equals(i.Name, providerName, StringComparison.OrdinalIgnoreCase));
}
var preferredLanguage = item.GetPreferredMetadataLanguage();
var languages = new List<string>();
if (!query.IncludeAllLanguages && !string.IsNullOrWhiteSpace(preferredLanguage))
{
languages.Add(preferredLanguage);
}
var tasks = providers.Select(i => GetImages(item, cancellationToken, i, languages, query.ImageType));
var results = await Task.WhenAll(tasks).ConfigureAwait(false);
var images = results.SelectMany(i => i);
return images;
}
/// <summary>
/// Gets the images.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="provider">The provider.</param>
/// <param name="preferredLanguages">The preferred languages.</param>
/// <param name="type">The type.</param>
/// <returns>Task{IEnumerable{RemoteImageInfo}}.</returns>
private async Task<IEnumerable<RemoteImageInfo>> GetImages(IHasImages item, CancellationToken cancellationToken, IRemoteImageProvider provider, List<string> preferredLanguages, ImageType? type = null)
{
try
{
var result = await provider.GetImages(item, cancellationToken).ConfigureAwait(false);
if (type.HasValue)
{
result = result.Where(i => i.Type == type.Value);
}
if (preferredLanguages.Count > 0)
{
result = result.Where(i => string.IsNullOrEmpty(i.Language) ||
preferredLanguages.Contains(i.Language, StringComparer.OrdinalIgnoreCase) ||
string.Equals(i.Language, "en", StringComparison.OrdinalIgnoreCase));
}
return result;
}
catch (OperationCanceledException)
{
return new List<RemoteImageInfo>();
}
catch (Exception ex)
{
_logger.ErrorException("{0} failed in GetImageInfos for type {1}", ex, provider.GetType().Name, item.GetType().Name);
return new List<RemoteImageInfo>();
}
}
/// <summary>
/// Gets the supported image providers.
/// </summary>
/// <param name="item">The item.</param>
/// <returns>IEnumerable{IImageProvider}.</returns>
public IEnumerable<ImageProviderInfo> GetRemoteImageProviderInfo(IHasImages item)
{
return GetRemoteImageProviders(item, true).Select(i => new ImageProviderInfo
{
Name = i.Name,
SupportedImages = i.GetSupportedImages(item).ToList()
});
}
public IEnumerable<IImageProvider> GetImageProviders(IHasImages item)
{
return GetImageProviders(item, GetMetadataOptions(item), false);
}
private IEnumerable<IImageProvider> GetImageProviders(IHasImages item, MetadataOptions options, bool includeDisabled)
{
// Avoid implicitly captured closure
var currentOptions = options;
return ImageProviders.Where(i => CanRefresh(i, item, options, includeDisabled))
.OrderBy(i =>
{
// See if there's a user-defined order
if (!(i is ILocalImageProvider))
{
var index = Array.IndexOf(currentOptions.ImageFetcherOrder, i.Name);
if (index != -1)
{
return index;
}
}
// Not configured. Just return some high number to put it at the end.
return 100;
})
.ThenBy(GetOrder);
}
public IEnumerable<IMetadataProvider<T>> GetMetadataProviders<T>(IHasMetadata item)
where T : IHasMetadata
{
var options = GetMetadataOptions(item);
return GetMetadataProvidersInternal<T>(item, options, false);
}
private IEnumerable<IMetadataProvider<T>> GetMetadataProvidersInternal<T>(IHasMetadata item, MetadataOptions options, bool includeDisabled)
where T : IHasMetadata
{
// Avoid implicitly captured closure
var currentOptions = options;
return _metadataProviders.OfType<IMetadataProvider<T>>()
.Where(i => CanRefresh(i, item, currentOptions, includeDisabled))
.OrderBy(i => GetConfiguredOrder(i, options))
.ThenBy(GetDefaultOrder);
}
public IEnumerable<IItemIdentityProvider<TLookupInfo, TIdentity>> GetItemIdentityProviders<TLookupInfo, TIdentity>()
where TLookupInfo : ItemLookupInfo
where TIdentity : IItemIdentity
{
return _identityProviders.OfType<IItemIdentityProvider<TLookupInfo, TIdentity>>();
}
public IEnumerable<IItemIdentityConverter<TIdentity>> GetItemIdentityConverters<TIdentity>()
where TIdentity : IItemIdentity
{
return _identityConverters.OfType<IItemIdentityConverter<TIdentity>>();
}
private IEnumerable<IRemoteImageProvider> GetRemoteImageProviders(IHasImages item, bool includeDisabled)
{
var options = GetMetadataOptions(item);
return GetImageProviders(item, options, includeDisabled).OfType<IRemoteImageProvider>();
}
private bool CanRefresh(IMetadataProvider provider, IHasMetadata item, MetadataOptions options, bool includeDisabled)
{
if (!includeDisabled)
{
// If locked only allow local providers
if (item.IsLocked && !(provider is ILocalMetadataProvider) && !(provider is IForcedProvider))
{
return false;
}
if (provider is IRemoteMetadataProvider)
{
if (!ConfigurationManager.Configuration.EnableInternetProviders)
{
return false;
}
if (Array.IndexOf(options.DisabledMetadataFetchers, provider.Name) != -1)
{
return false;
}
}
}
if (!item.SupportsLocalMetadata && provider is ILocalMetadataProvider)
{
return false;
}
// If this restriction is ever lifted, movie xml providers will have to be updated to prevent owned items like trailers from reading those files
if (item.IsOwnedItem)
{
if (provider is ILocalMetadataProvider || provider is IRemoteMetadataProvider)
{
return false;
}
}
return true;
}
private bool CanRefresh(IImageProvider provider, IHasImages item, MetadataOptions options, bool includeDisabled)
{
if (!includeDisabled)
{
// If locked only allow local providers
if (item.IsLocked && !(provider is ILocalImageProvider))
{
return false;
}
if (provider is IRemoteImageProvider || provider is IDynamicImageProvider)
{
if (Array.IndexOf(options.DisabledImageFetchers, provider.Name) != -1)
{
return false;
}
if (provider is IRemoteImageProvider)
{
if (!ConfigurationManager.Configuration.EnableInternetProviders)
{
return false;
}
}
}
}
try
{
return provider.Supports(item);
}
catch (Exception ex)
{
_logger.ErrorException("{0} failed in Supports for type {1}", ex, provider.GetType().Name, item.GetType().Name);
return false;
}
}
/// <summary>
/// Gets the order.
/// </summary>
/// <param name="provider">The provider.</param>
/// <returns>System.Int32.</returns>
private int GetOrder(IImageProvider provider)
{
var hasOrder = provider as IHasOrder;
if (hasOrder == null)
{
return 0;
}
return hasOrder.Order;
}
private int GetConfiguredOrder(IMetadataProvider provider, MetadataOptions options)
{
// See if there's a user-defined order
if (provider is ILocalMetadataProvider)
{
var index = Array.IndexOf(options.LocalMetadataReaderOrder, provider.Name);
if (index != -1)
{
return index;
}
}
// See if there's a user-defined order
if (provider is IRemoteMetadataProvider)
{
var index = Array.IndexOf(options.MetadataFetcherOrder, provider.Name);
if (index != -1)
{
return index;
}
}
// Not configured. Just return some high number to put it at the end.
return 100;
}
private int GetDefaultOrder(IMetadataProvider provider)
{
var hasOrder = provider as IHasOrder;
if (hasOrder != null)
{
return hasOrder.Order;
}
return 0;
}
public IEnumerable<MetadataPluginSummary> GetAllMetadataPlugins()
{
var list = new List<MetadataPluginSummary>
{
GetPluginSummary<Game>(),
GetPluginSummary<GameSystem>(),
GetPluginSummary<Movie>(),
GetPluginSummary<Trailer>(),
GetPluginSummary<BoxSet>(),
GetPluginSummary<Book>(),
GetPluginSummary<Series>(),
GetPluginSummary<Season>(),
GetPluginSummary<Episode>(),
GetPluginSummary<Person>(),
GetPluginSummary<MusicAlbum>(),
GetPluginSummary<MusicArtist>(),
GetPluginSummary<Audio>(),
GetPluginSummary<Genre>(),
GetPluginSummary<Studio>(),
GetPluginSummary<GameGenre>(),
GetPluginSummary<MusicGenre>(),
GetPluginSummary<MusicVideo>(),
GetPluginSummary<Video>(),
GetPluginSummary<LiveTvChannel>(),
GetPluginSummary<LiveTvProgram>(),
GetPluginSummary<LiveTvVideoRecording>(),
GetPluginSummary<LiveTvAudioRecording>()
};
return list;
}
private MetadataPluginSummary GetPluginSummary<T>()
where T : BaseItem, new()
{
// Give it a dummy path just so that it looks like a file system item
var dummy = new T()
{
Path = "C:\\",
// Dummy this up to fool the local trailer check
Parent = new Folder()
};
var options = GetMetadataOptions(dummy);
var summary = new MetadataPluginSummary
{
ItemType = typeof(T).Name
};
var imageProviders = GetImageProviders(dummy, options, true).ToList();
AddMetadataPlugins(summary.Plugins, dummy, options);
AddImagePlugins(summary.Plugins, dummy, imageProviders);
var supportedImageTypes = imageProviders.OfType<IRemoteImageProvider>()
.SelectMany(i => i.GetSupportedImages(dummy))
.ToList();
supportedImageTypes.AddRange(imageProviders.OfType<IDynamicImageProvider>()
.SelectMany(i => i.GetSupportedImages(dummy)));
summary.SupportedImageTypes = supportedImageTypes.Distinct().ToList();
return summary;
}
private void AddMetadataPlugins<T>(List<MetadataPlugin> list, T item, MetadataOptions options)
where T : IHasMetadata
{
var providers = GetMetadataProvidersInternal<T>(item, options, true).ToList();
// Locals
list.AddRange(providers.Where(i => (i is ILocalMetadataProvider)).Select(i => new MetadataPlugin
{
Name = i.Name,
Type = MetadataPluginType.LocalMetadataProvider
}));
if (ConfigurationManager.Configuration.EnableInternetProviders)
{
// Fetchers
list.AddRange(providers.Where(i => (i is IRemoteMetadataProvider)).Select(i => new MetadataPlugin
{
Name = i.Name,
Type = MetadataPluginType.MetadataFetcher
}));
}
if (item.IsSaveLocalMetadataEnabled())
{
// Savers
list.AddRange(_savers.Where(i => IsSaverEnabledForItem(i, item, ItemUpdateType.MetadataEdit, true)).OrderBy(i => i.Name).Select(i => new MetadataPlugin
{
Name = i.Name,
Type = MetadataPluginType.MetadataSaver
}));
}
}
private void AddImagePlugins<T>(List<MetadataPlugin> list, T item, List<IImageProvider> imageProviders)
where T : IHasImages
{
// Locals
list.AddRange(imageProviders.Where(i => (i is ILocalImageProvider)).Select(i => new MetadataPlugin
{
Name = i.Name,
Type = MetadataPluginType.LocalImageProvider
}));
var enableInternet = ConfigurationManager.Configuration.EnableInternetProviders;
// Fetchers
list.AddRange(imageProviders.Where(i => i is IDynamicImageProvider || (enableInternet && i is IRemoteImageProvider)).Select(i => new MetadataPlugin
{
Name = i.Name,
Type = MetadataPluginType.ImageFetcher
}));
}
public MetadataOptions GetMetadataOptions(IHasImages item)
{
var type = item.GetType().Name;
return ConfigurationManager.Configuration.MetadataOptions
.FirstOrDefault(i => string.Equals(i.ItemType, type, StringComparison.OrdinalIgnoreCase)) ??
new MetadataOptions();
}
private readonly ConcurrentDictionary<string, SemaphoreSlim> _fileLocks = new ConcurrentDictionary<string, SemaphoreSlim>();
/// <summary>
/// Saves the metadata.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="updateType">Type of the update.</param>
/// <returns>Task.</returns>
public Task SaveMetadata(IHasMetadata item, ItemUpdateType updateType)
{
return SaveMetadata(item, updateType, _savers);
}
/// <summary>
/// Saves the metadata.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="updateType">Type of the update.</param>
/// <param name="savers">The savers.</param>
/// <returns>Task.</returns>
public Task SaveMetadata(IHasMetadata item, ItemUpdateType updateType, IEnumerable<string> savers)
{
return SaveMetadata(item, updateType, _savers.Where(i => savers.Contains(i.Name, StringComparer.OrdinalIgnoreCase)));
}
/// <summary>
/// Saves the metadata.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="updateType">Type of the update.</param>
/// <param name="savers">The savers.</param>
/// <returns>Task.</returns>
private async Task SaveMetadata(IHasMetadata item, ItemUpdateType updateType, IEnumerable<IMetadataSaver> savers)
{
foreach (var saver in savers.Where(i => IsSaverEnabledForItem(i, item, updateType, false)))
{
_logger.Debug("Saving {0} to {1}.", item.Path ?? item.Name, saver.Name);
var fileSaver = saver as IMetadataFileSaver;
if (fileSaver != null)
{
string path = null;
try
{
path = fileSaver.GetSavePath(item);
}
catch (Exception ex)
{
_logger.ErrorException("Error in {0} GetSavePath", ex, saver.Name);
continue;
}
var semaphore = _fileLocks.GetOrAdd(path, key => new SemaphoreSlim(1, 1));
await semaphore.WaitAsync().ConfigureAwait(false);
try
{
_libraryMonitor.ReportFileSystemChangeBeginning(path);
saver.Save(item, CancellationToken.None);
}
catch (Exception ex)
{
_logger.ErrorException("Error in metadata saver", ex);
}
finally
{
_libraryMonitor.ReportFileSystemChangeComplete(path, false);
semaphore.Release();
}
}
else
{
try
{
saver.Save(item, CancellationToken.None);
}
catch (Exception ex)
{
_logger.ErrorException("Error in metadata saver", ex);
}
}
}
}
/// <summary>
/// Determines whether [is saver enabled for item] [the specified saver].
/// </summary>
/// <param name="saver">The saver.</param>
/// <param name="item">The item.</param>
/// <param name="updateType">Type of the update.</param>
/// <param name="includeDisabled">if set to <c>true</c> [include disabled].</param>
/// <returns><c>true</c> if [is saver enabled for item] [the specified saver]; otherwise, <c>false</c>.</returns>
private bool IsSaverEnabledForItem(IMetadataSaver saver, IHasMetadata item, ItemUpdateType updateType, bool includeDisabled)
{
var options = GetMetadataOptions(item);
try
{
var isEnabledFor = saver.IsEnabledFor(item, updateType);
if (!includeDisabled)
{
if (options.DisabledMetadataSavers.Contains(saver.Name, StringComparer.OrdinalIgnoreCase))
{
return false;
}
if (!item.IsSaveLocalMetadataEnabled())
{
if (updateType >= ItemUpdateType.MetadataEdit)
{
var fileSaver = saver as IMetadataFileSaver;
// Manual edit occurred
// Even if save local is off, save locally anyway if the metadata file already exists
if (fileSaver == null || !isEnabledFor || !File.Exists(fileSaver.GetSavePath(item)))
{
return false;
}
}
else
{
// Manual edit did not occur
// Since local metadata saving is disabled, consider it disabled
return false;
}
}
}
return isEnabledFor;
}
catch (Exception ex)
{
_logger.ErrorException("Error in {0}.IsEnabledFor", ex, saver.Name);
return false;
}
}
public async Task<IEnumerable<RemoteSearchResult>> GetRemoteSearchResults<TItemType, TLookupType>(RemoteSearchQuery<TLookupType> searchInfo,
CancellationToken cancellationToken)
where TItemType : BaseItem, new()
where TLookupType : ItemLookupInfo
{
// Give it a dummy path just so that it looks like a file system item
var dummy = new TItemType
{
Path = "C:\\",
// Dummy this up to fool the local trailer check
Parent = new Folder()
};
var options = GetMetadataOptions(dummy);
var providers = GetMetadataProvidersInternal<TItemType>(dummy, options, searchInfo.IncludeDisabledProviders)
.OfType<IRemoteSearchProvider<TLookupType>>();
if (!string.IsNullOrEmpty(searchInfo.SearchProviderName))
{
providers = providers.Where(i => string.Equals(i.Name, searchInfo.SearchProviderName, StringComparison.OrdinalIgnoreCase));
}
if (string.IsNullOrWhiteSpace(searchInfo.SearchInfo.MetadataLanguage))
{
searchInfo.SearchInfo.MetadataLanguage = ConfigurationManager.Configuration.PreferredMetadataLanguage;
}
if (string.IsNullOrWhiteSpace(searchInfo.SearchInfo.MetadataCountryCode))
{
searchInfo.SearchInfo.MetadataCountryCode = ConfigurationManager.Configuration.MetadataCountryCode;
}
foreach (var provider in providers)
{
var results = await GetSearchResults(provider, searchInfo.SearchInfo, cancellationToken).ConfigureAwait(false);
var list = results.ToList();
if (list.Count > 0)
{
return list.Take(10);
}
}
// Nothing found
return new List<RemoteSearchResult>();
}
private async Task<IEnumerable<RemoteSearchResult>> GetSearchResults<TLookupType>(IRemoteSearchProvider<TLookupType> provider, TLookupType searchInfo,
CancellationToken cancellationToken)
where TLookupType : ItemLookupInfo
{
var results = await provider.GetSearchResults(searchInfo, cancellationToken).ConfigureAwait(false);
var list = results.ToList();
foreach (var item in list)
{
item.SearchProviderName = provider.Name;
}
return list;
}
public Task<HttpResponseInfo> GetSearchImage(string providerName, string url, CancellationToken cancellationToken)
{
var provider = _metadataProviders.OfType<IRemoteSearchProvider>().FirstOrDefault(i => string.Equals(i.Name, providerName, StringComparison.OrdinalIgnoreCase));
if (provider == null)
{
throw new ArgumentException("Search provider not found.");
}
return provider.GetImageResponse(url, cancellationToken);
}
public IEnumerable<IExternalId> GetExternalIds(IHasProviderIds item)
{
return _externalIds.Where(i =>
{
try
{
return i.Supports(item);
}
catch (Exception ex)
{
_logger.ErrorException("Error in {0}.Suports", ex, i.GetType().Name);
return false;
}
});
}
public IEnumerable<ExternalUrl> GetExternalUrls(IHasProviderIds item)
{
return GetExternalIds(item)
.Select(i =>
{
if (string.IsNullOrEmpty(i.UrlFormatString))
{
return null;
}
var value = item.GetProviderId(i.Key);
if (string.IsNullOrEmpty(value))
{
return null;
}
return new ExternalUrl
{
Name = i.Name,
Url = string.Format(i.UrlFormatString, value)
};
}).Where(i => i != null);
}
public IEnumerable<ExternalIdInfo> GetExternalIdInfos(IHasProviderIds item)
{
return GetExternalIds(item)
.Select(i => new ExternalIdInfo
{
Name = i.Name,
Key = i.Key,
UrlFormatString = i.UrlFormatString
});
}
}
}