using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using NLog;
using Ninject;
using NzbDrone.Core.Model;
using NzbDrone.Core.Model.Notification;
using NzbDrone.Core.Providers.DecisionEngine;
using NzbDrone.Core.Repository;
namespace NzbDrone.Core.Providers
{
public class SearchProvider
{
//Season and Episode Searching
private readonly EpisodeProvider _episodeProvider;
private readonly DownloadProvider _downloadProvider;
private readonly SeriesProvider _seriesProvider;
private readonly IndexerProvider _indexerProvider;
private readonly SceneMappingProvider _sceneMappingProvider;
private readonly UpgradePossibleSpecification _upgradePossibleSpecification;
private readonly AllowedDownloadSpecification _allowedDownloadSpecification;
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
[Inject]
public SearchProvider(EpisodeProvider episodeProvider, DownloadProvider downloadProvider, SeriesProvider seriesProvider,
IndexerProvider indexerProvider, SceneMappingProvider sceneMappingProvider,
UpgradePossibleSpecification upgradePossibleSpecification, AllowedDownloadSpecification allowedDownloadSpecification)
{
_episodeProvider = episodeProvider;
_downloadProvider = downloadProvider;
_seriesProvider = seriesProvider;
_indexerProvider = indexerProvider;
_sceneMappingProvider = sceneMappingProvider;
_upgradePossibleSpecification = upgradePossibleSpecification;
_allowedDownloadSpecification = allowedDownloadSpecification;
}
public SearchProvider()
{
}
public virtual bool SeasonSearch(ProgressNotification notification, int seriesId, int seasonNumber)
{
var series = _seriesProvider.GetSeries(seriesId);
if (series == null)
{
Logger.Error("Unable to find an series {0} in database", seriesId);
return false;
}
//Return false if the series is a daily series (we only support individual episode searching
if (series.IsDaily)
return false;
notification.CurrentMessage = String.Format("Searching for {0} Season {1}", series.Title, seasonNumber);
var reports = PerformSearch(notification, series, seasonNumber);
Logger.Debug("Finished searching all indexers. Total {0}", reports.Count);
if (reports.Count == 0)
return false;
Logger.Debug("Getting episodes from database for series: {0} and season: {1}", seriesId, seasonNumber);
var episodeNumbers = _episodeProvider.GetEpisodeNumbersBySeason(seriesId, seasonNumber);
if (episodeNumbers == null || episodeNumbers.Count == 0)
{
Logger.Warn("No episodes in database found for series: {0} and season: {1}.", seriesId, seasonNumber);
return false;
}
notification.CurrentMessage = "Processing search results";
reports.Where(p => p.FullSeason && p.SeasonNumber == seasonNumber).ToList().ForEach(
e => e.EpisodeNumbers = episodeNumbers.ToList()
);
var downloadedEpisodes = ProcessSearchResults(notification, reports, series, seasonNumber);
downloadedEpisodes.Sort();
episodeNumbers.ToList().Sort();
//Returns true if the list of downloaded episodes matches the list of episode numbers
//(either a full season release was grabbed or all individual episodes)
return (downloadedEpisodes.SequenceEqual(episodeNumbers));
}
public virtual List<int> PartialSeasonSearch(ProgressNotification notification, int seriesId, int seasonNumber)
{
//This method will search for episodes in a season in groups of 10 episodes S01E0, S01E1, S01E2, etc
var series = _seriesProvider.GetSeries(seriesId);
if (series == null)
{
Logger.Error("Unable to find an series {0} in database", seriesId);
return new List<int>();
}
//Return empty list if the series is a daily series (we only support individual episode searching
if (series.IsDaily)
return new List<int>();
notification.CurrentMessage = String.Format("Searching for {0} Season {1}", series.Title, seasonNumber);
var episodes = _episodeProvider.GetEpisodesBySeason(seriesId, seasonNumber);
var reports = PerformSearch(notification, series, seasonNumber, episodes);
Logger.Debug("Finished searching all indexers. Total {0}", reports.Count);
if (reports.Count == 0)
return new List<int>();
notification.CurrentMessage = "Processing search results";
return ProcessSearchResults(notification, reports, series, seasonNumber);
}
public virtual bool EpisodeSearch(ProgressNotification notification, int episodeId)
{
var episode = _episodeProvider.GetEpisode(episodeId);
if (episode == null)
{
Logger.Error("Unable to find an episode {0} in database", episodeId);
return false;
}
//Check to see if an upgrade is possible before attempting
if (!_upgradePossibleSpecification.IsSatisfiedBy(episode))
{
Logger.Info("Search for {0} was aborted, file in disk meets or exceeds Profile's Cutoff", episode);
notification.CurrentMessage = String.Format("Skipping search for {0}, file you have is already at cutoff", episode);
return false;
}
notification.CurrentMessage = "Looking for " + episode;
if (episode.Series.IsDaily && !episode.AirDate.HasValue)
{
Logger.Warn("AirDate is not Valid for: {0}", episode);
return false;
}
var reports = PerformSearch(notification, episode.Series, episode.SeasonNumber, new List<Episode> { episode });
Logger.Debug("Finished searching all indexers. Total {0}", reports.Count);
notification.CurrentMessage = "Processing search results";
if (!episode.Series.IsDaily && ProcessSearchResults(notification, reports, episode.Series, episode.SeasonNumber, episode.EpisodeNumber).Count == 1)
return true;
if (episode.Series.IsDaily && ProcessSearchResults(notification, reports, episode.Series, episode.AirDate.Value))
return true;
Logger.Warn("Unable to find {0} in any of indexers.", episode);
if (reports.Any())
{
notification.CurrentMessage = String.Format("Sorry, couldn't find {0} in a non-sucky quality. (by your standards)", episode);
}
else
{
notification.CurrentMessage = String.Format("Sorry, couldn't find you {0} in any of indexers.", episode);
}
return false;
}
public List<EpisodeParseResult> PerformSearch(ProgressNotification notification, Series series, int seasonNumber, IList<Episode> episodes = null)
{
//If single episode, do a single episode search, if full season then do a full season search, otherwise, do a partial search
var indexers = _indexerProvider.GetEnabledIndexers();
var reports = new List<EpisodeParseResult>();
var title = _sceneMappingProvider.GetSceneName(series.SeriesId);
if (string.IsNullOrWhiteSpace(title))
{
title = series.Title;
}
foreach (var indexer in indexers)
{
try
{
if (episodes == null)
reports.AddRange(indexer.FetchSeason(title, seasonNumber));
//Treat as single episode
else if (episodes.Count == 1)
{
if (!series.IsDaily)
reports.AddRange(indexer.FetchEpisode(title, seasonNumber, episodes.First().EpisodeNumber));
//Daily Episode
else
reports.AddRange(indexer.FetchDailyEpisode(title, episodes.First().AirDate.Value));
}
//Treat as Partial Season
else
{
var prefixes = GetEpisodeNumberPrefixes(episodes.Select(s => s.EpisodeNumber));
foreach (var episodePrefix in prefixes)
{
reports.AddRange(indexer.FetchPartialSeason(title, seasonNumber, episodePrefix));
}
}
}
catch (Exception e)
{
Logger.ErrorException("An error has occurred while fetching items from " + indexer.Name, e);
}
}
return reports;
}
public List<int> ProcessSearchResults(ProgressNotification notification, IEnumerable<EpisodeParseResult> reports, Series series, int seasonNumber, int? episodeNumber = null)
{
var successes = new List<int>();
foreach (var episodeParseResult in reports.OrderByDescending(c => c.Quality))
{
try
{
Logger.Trace("Analysing report " + episodeParseResult);
//Get the matching series
episodeParseResult.Series = _seriesProvider.FindSeries(episodeParseResult.CleanTitle);
//If series is null or doesn't match the series we're looking for return
if (episodeParseResult.Series == null || episodeParseResult.Series.SeriesId != series.SeriesId)
{
Logger.Trace("Unexpected series for search: {0}. Skipping.", episodeParseResult.CleanTitle);
continue;
}
//If SeasonNumber doesn't match or episode is not in the in the list in the parse result, skip the report.
if (episodeParseResult.SeasonNumber != seasonNumber)
{
Logger.Trace("Season number does not match searched season number, skipping.");
continue;
}
//If the EpisodeNumber was passed in and it is not contained in the parseResult, skip the report.
if (episodeNumber.HasValue && !episodeParseResult.EpisodeNumbers.Contains(episodeNumber.Value))
{
Logger.Trace("Searched episode number is not contained in post, skipping.");
continue;
}
//Make sure we haven't already downloaded a report with this episodenumber, if we have, skip the report.
if (successes.Intersect(episodeParseResult.EpisodeNumbers).Any())
{
Logger.Trace("Episode has already been downloaded in this search, skipping.");
continue;
}
if (_allowedDownloadSpecification.IsSatisfiedBy(episodeParseResult))
{
Logger.Debug("Found '{0}'. Adding to download queue.", episodeParseResult);
try
{
if (_downloadProvider.DownloadReport(episodeParseResult))
{
notification.CurrentMessage =
String.Format("{0} - S{1:00}E{2:00} {3} Added to download queue",
episodeParseResult.Series.Title, episodeParseResult.SeasonNumber,
episodeParseResult.EpisodeNumbers[0], episodeParseResult.Quality);
//Add the list of episode numbers from this release
successes.AddRange(episodeParseResult.EpisodeNumbers);
}
}
catch (Exception e)
{
Logger.ErrorException("Unable to add report to download queue." + episodeParseResult, e);
notification.CurrentMessage = String.Format("Unable to add report to download queue. {0}", episodeParseResult);
}
}
}
catch (Exception e)
{
Logger.ErrorException("An error has occurred while processing parse result items from " + episodeParseResult, e);
}
}
return successes;
}
public bool ProcessSearchResults(ProgressNotification notification, IEnumerable<EpisodeParseResult> reports, Series series, DateTime airDate)
{
foreach (var episodeParseResult in reports.OrderByDescending(c => c.Quality))
{
try
{
Logger.Trace("Analysing report " + episodeParseResult);
//Get the matching series
episodeParseResult.Series = _seriesProvider.FindSeries(episodeParseResult.CleanTitle);
//If series is null or doesn't match the series we're looking for return
if (episodeParseResult.Series == null || episodeParseResult.Series.SeriesId != series.SeriesId)
continue;
//If parse result doesn't have an air date or it doesn't match passed in airdate, skip the report.
if (!episodeParseResult.AirDate.HasValue || episodeParseResult.AirDate.Value.Date != airDate.Date)
continue;
if (_allowedDownloadSpecification.IsSatisfiedBy(episodeParseResult))
{
Logger.Debug("Found '{0}'. Adding to download queue.", episodeParseResult);
try
{
if (_downloadProvider.DownloadReport(episodeParseResult))
{
notification.CurrentMessage =
String.Format("{0} - {1} {2} Added to download queue",
episodeParseResult.Series.Title, episodeParseResult.AirDate.Value.ToShortDateString(), episodeParseResult.Quality);
return true;
}
}
catch (Exception e)
{
Logger.ErrorException("Unable to add report to download queue." + episodeParseResult, e);
notification.CurrentMessage = String.Format("Unable to add report to download queue. {0}", episodeParseResult);
}
}
}
catch (Exception e)
{
Logger.ErrorException("An error has occurred while processing parse result items from " + episodeParseResult, e);
}
}
return false;
}
private List<int> GetEpisodeNumberPrefixes(IEnumerable<int> episodeNumbers)
{
var results = new List<int>();
foreach (var i in episodeNumbers)
{
results.Add(i / 10);
}
return results.Distinct().ToList();
}
}
}