using System.Collections.Generic; using System.Net; using MediaBrowser.Common.Net; using MediaBrowser.Controller.Configuration; using MediaBrowser.Controller.Entities; using MediaBrowser.Model.Entities; using MediaBrowser.Model.Logging; using System; using System.Threading; using System.Threading.Tasks; using MediaBrowser.Model.Serialization; namespace MediaBrowser.Controller.Providers.Music { class LastfmProviderException : ApplicationException { public LastfmProviderException(string msg) : base(msg) { } } /// /// Class MovieDbProvider /// public abstract class LastfmBaseProvider : BaseMetadataProvider { protected static readonly SemaphoreSlim LastfmResourcePool = new SemaphoreSlim(5, 5); /// /// Initializes a new instance of the class. /// /// The json serializer. /// The HTTP client. /// The log manager. /// The configuration manager. /// jsonSerializer protected LastfmBaseProvider(IJsonSerializer jsonSerializer, IHttpClient httpClient, ILogManager logManager, IServerConfigurationManager configurationManager) : base(logManager, configurationManager) { if (jsonSerializer == null) { throw new ArgumentNullException("jsonSerializer"); } if (httpClient == null) { throw new ArgumentNullException("httpClient"); } JsonSerializer = jsonSerializer; HttpClient = httpClient; } /// /// Gets the json serializer. /// /// The json serializer. protected IJsonSerializer JsonSerializer { get; private set; } /// /// Gets the HTTP client. /// /// The HTTP client. protected IHttpClient HttpClient { get; private set; } /// /// The name of the local json meta file for this item type /// protected string LocalMetaFileName { get; set; } /// /// If we save locally, refresh if they delete something /// protected override bool RefreshOnFileSystemStampChange { get { return ConfigurationManager.Configuration.SaveLocalMeta; } } /// /// Gets the priority. /// /// The priority. public override MetadataProviderPriority Priority { get { return MetadataProviderPriority.Second; } } /// /// Gets a value indicating whether [requires internet]. /// /// true if [requires internet]; otherwise, false. public override bool RequiresInternet { get { return true; } } protected const string RootUrl = @"http://ws.audioscrobbler.com/2.0/?"; protected static string ApiKey = "7b76553c3eb1d341d642755aecc40a33"; /// /// Determines whether [has local meta] [the specified item]. /// /// The item. /// true if [has local meta] [the specified item]; otherwise, false. protected bool HasLocalMeta(BaseItem item) { return item.ResolveArgs.ContainsMetaFileByName(LocalMetaFileName); } /// /// Fetches the items data. /// /// The item. /// /// Task. protected virtual async Task FetchData(BaseItem item, CancellationToken cancellationToken) { var id = item.GetProviderId(MetadataProviders.Musicbrainz) ?? await FindId(item, cancellationToken).ConfigureAwait(false); if (id != null) { Logger.Debug("LastfmProvider - getting info for {0}", item.Name); cancellationToken.ThrowIfCancellationRequested(); item.SetProviderId(MetadataProviders.Musicbrainz, id); await FetchLastfmData(item, id, cancellationToken).ConfigureAwait(false); } else { Logger.Info("LastfmProvider could not find " + item.Name + ". Check name on Last.fm."); } } protected abstract Task FindId(BaseItem item, CancellationToken cancellationToken); protected abstract Task FetchLastfmData(BaseItem item, string id, CancellationToken cancellationToken); /// /// Encodes an URL. /// /// The name. /// System.String. protected static string UrlEncode(string name) { return WebUtility.UrlEncode(name); } protected override bool NeedsRefreshInternal(BaseItem item, BaseProviderInfo providerInfo) { if (item.DontFetchMeta) return false; if (ConfigurationManager.Configuration.SaveLocalMeta && HasFileSystemStampChanged(item, providerInfo)) { //If they deleted something from file system, chances are, this item was mis-identified the first time item.SetProviderId(MetadataProviders.Musicbrainz, null); Logger.Debug("LastfmProvider reports file system stamp change..."); return true; } if (providerInfo.LastRefreshStatus == ProviderRefreshStatus.CompletedWithErrors) { Logger.Debug("LastfmProvider for {0} - last attempt had errors. Will try again.", item.Path); return true; } var downloadDate = providerInfo.LastRefreshed; if (ConfigurationManager.Configuration.MetadataRefreshDays == -1 && downloadDate != DateTime.MinValue) { return false; } if (DateTime.Today.Subtract(item.DateCreated).TotalDays > 180 && downloadDate != DateTime.MinValue) return false; // don't trigger a refresh data for item that are more than 6 months old and have been refreshed before if (DateTime.Today.Subtract(downloadDate).TotalDays < ConfigurationManager.Configuration.MetadataRefreshDays) // only refresh every n days return false; Logger.Debug("LastfmProvider - " + item.Name + " needs refresh. Download date: " + downloadDate + " item created date: " + item.DateCreated + " Check for Update age: " + ConfigurationManager.Configuration.MetadataRefreshDays); return true; } /// /// Fetches metadata and returns true or false indicating if any work that requires persistence was done /// /// The item. /// if set to true [force]. /// The cancellation token /// Task{System.Boolean}. protected override async Task FetchAsyncInternal(BaseItem item, bool force, CancellationToken cancellationToken) { if (item.DontFetchMeta) { Logger.Info("LastfmProvider - Not fetching because requested to ignore " + item.Name); return false; } cancellationToken.ThrowIfCancellationRequested(); if (!ConfigurationManager.Configuration.SaveLocalMeta || !HasLocalMeta(item) || (force && !HasLocalMeta(item))) { try { await FetchData(item, cancellationToken).ConfigureAwait(false); SetLastRefreshed(item, DateTime.UtcNow); } catch (LastfmProviderException) { SetLastRefreshed(item, DateTime.UtcNow, ProviderRefreshStatus.CompletedWithErrors); } return true; } Logger.Debug("LastfmProvider not fetching because local meta exists for " + item.Name); SetLastRefreshed(item, DateTime.UtcNow); return true; } } #region Result Objects public class LastfmStats { public string listeners { get; set; } public string playcount { get; set; } } public class LastfmTag { public string name { get; set; } public string url { get; set; } } public class LastfmTags { public List tag { get; set; } } public class LastfmFormationInfo { public string yearfrom { get; set; } public string yearto { get; set; } } public class LastFmBio { public string published { get; set; } public string summary { get; set; } public string content { get; set; } public string placeformed { get; set; } public string yearformed { get; set; } public List formationlist { get; set; } } public class LastfmArtist { public string name { get; set; } public string mbid { get; set; } public string url { get; set; } public string streamable { get; set; } public string ontour { get; set; } public LastfmStats stats { get; set; } public List similar { get; set; } public LastfmTags tags { get; set; } public LastFmBio bio { get; set; } } public class LastfmAlbum { public string name { get; set; } public string artist { get; set; } public string id { get; set; } public string mbid { get; set; } public string releasedate { get; set; } public int listeners { get; set; } public int playcount { get; set; } public LastfmTags toptags { get; set; } public LastFmBio wiki { get; set; } } public class LastfmGetAlbumResult { public LastfmAlbum album { get; set; } } public class LastfmGetArtistResult { public LastfmArtist artist { get; set; } } public class Artistmatches { public List artist { get; set; } } public class LastfmArtistSearchResult { public Artistmatches artistmatches { get; set; } } public class LastfmArtistSearchResults { public LastfmArtistSearchResult results { get; set; } } #endregion }