using System.Net; using MediaBrowser.Common.Net; 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 { /// /// 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; } /// /// Initializes a new instance of the class. /// /// The json serializer. /// The HTTP client. /// The Log manager /// jsonSerializer public LastfmBaseProvider(IJsonSerializer jsonSerializer, IHttpClient httpClient, ILogManager logManager) : base(logManager) { if (jsonSerializer == null) { throw new ArgumentNullException("jsonSerializer"); } if (httpClient == null) { throw new ArgumentNullException("httpClient"); } JsonSerializer = jsonSerializer; HttpClient = httpClient; } /// /// 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; } } /// /// If we save locally, refresh if they delete something /// protected override bool RefreshOnFileSystemStampChange { get { return Kernel.Instance.Configuration.SaveLocalMeta; } } protected const string RootUrl = @"http://ws.audioscrobbler.com/2.0/"; protected static string ApiKey = "7b76553c3eb1d341d642755aecc40a33"; protected override bool NeedsRefreshInternal(BaseItem item, BaseProviderInfo providerInfo) { if (item.DontFetchMeta) return false; if (Kernel.Instance.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 (Kernel.Instance.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 < Kernel.Instance.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: " + Kernel.Instance.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 (!Kernel.Instance.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; } /// /// Determines whether [has local meta] [the specified item]. /// /// The item. /// true if [has local meta] [the specified item]; otherwise, false. private bool HasLocalMeta(BaseItem item) { return item.ResolveArgs.ContainsMetaFileByName(LocalMetaFileName); } /// /// Fetches the items data. /// /// The item. /// /// Task. protected abstract Task FetchData(BaseItem item, CancellationToken cancellationToken); /// /// Encodes an URL. /// /// The name. /// System.String. protected static string UrlEncode(string name) { return WebUtility.UrlEncode(name); } } }