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Sonarr/NzbDrone.Core/Providers/Feed/FeedProviderBase.cs

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using System.ServiceModel.Syndication;
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using System.Xml;
using NLog;
using NzbDrone.Core.Model;
using NzbDrone.Core.Providers.Core;
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namespace NzbDrone.Core.Providers.Feed
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{
public abstract class FeedProviderBase
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{
protected readonly ISeriesProvider _seriesProvider;
protected readonly ISeasonProvider _seasonProvider;
protected readonly IEpisodeProvider _episodeProvider;
protected readonly IConfigProvider _configProvider;
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private readonly IHttpProvider _httpProvider;
protected static readonly Logger Logger = LogManager.GetCurrentClassLogger();
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public FeedProviderBase(ISeriesProvider seriesProvider, ISeasonProvider seasonProvider,
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IEpisodeProvider episodeProvider, IConfigProvider configProvider, IHttpProvider httpProvider)
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{
_seriesProvider = seriesProvider;
_seasonProvider = seasonProvider;
_episodeProvider = episodeProvider;
_configProvider = configProvider;
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_httpProvider = httpProvider;
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}
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/// <summary>
/// Gets the source URL for the feed
/// </summary>
protected abstract string[] URL { get; }
/// <summary>
/// Gets the name for this feed
/// </summary>
protected abstract string Name { get; }
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/// <summary>
/// Generates direct link to download an NZB
/// </summary>
/// <param name="item">RSS Feed item to generate the link for</param>
/// <returns>Download link URL</returns>
protected abstract string NzbDownloadUrl(SyndicationItem item);
/// <summary>
/// Parses the RSS feed item and.
/// </summary>
/// <param name="item">RSS feed item to parse</param>
/// <returns>Detailed episode info</returns>
protected EpisodeParseResult ParseFeed(SyndicationItem item)
{
var episodeParseResult = Parser.ParseEpisodeInfo(item.Title.Text);
if (episodeParseResult == null) return null;
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var seriesInfo = _seriesProvider.FindSeries(episodeParseResult.SeriesTitle);
if (seriesInfo != null)
{
episodeParseResult.SeriesId = seriesInfo.SeriesId;
episodeParseResult.SeriesTitle = seriesInfo.Title;
return episodeParseResult;
}
Logger.Debug("Unable to map {0} to any of series in database", episodeParseResult.SeriesTitle);
return null;
}
/// <summary>
/// Fetches RSS feed and process each news item.
/// </summary>
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public void Fetch()
{
Logger.Info("Fetching feeds from " + Name);
foreach (var url in URL)
{
Logger.Debug("Downloading RSS " + url);
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var feed = SyndicationFeed.Load(_httpProvider.DownloadXml(url)).Items;
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foreach (var item in feed)
{
ProcessItem(item);
}
}
Logger.Info("Finished processing feeds from " + Name);
}
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private void ProcessItem(SyndicationItem feedItem)
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{
Logger.Info("Processing RSS feed item " + feedItem.Title.Text);
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var parseResult = ParseFeed(feedItem);
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if (parseResult != null)
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{
if (!_seriesProvider.IsMonitored(parseResult.SeriesId))
{
Logger.Debug("{0} is present in the DB but not tracked. skipping.", parseResult.SeriesTitle);
}
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if (!_seriesProvider.QualityWanted(parseResult.SeriesId, parseResult.Quality))
{
Logger.Debug("Post doesn't meet the quality requirements [{0}]. skipping.", parseResult.Quality);
}
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if (_seasonProvider.IsIgnored(parseResult.SeriesId, parseResult.SeasonNumber))
{
Logger.Debug("Season {0} is currently set to ignore. skipping.", parseResult.SeasonNumber);
}
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if (!_episodeProvider.IsNeeded(parseResult))
{
Logger.Debug("Episode {0} is not needed. skipping.", parseResult);
}
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}
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}
}
}