mirror of https://github.com/Jackett/Jackett
132 lines
4.2 KiB
C#
132 lines
4.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Threading.Tasks;
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using Jackett.Common.Models;
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using Jackett.Common.Services.Interfaces;
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using Jackett.Common.Utils;
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namespace Jackett.Common.Indexers.Meta
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{
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public interface IResultFilter
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{
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Task<IEnumerable<ReleaseInfo>> FilterResults(IEnumerable<ReleaseInfo> results);
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}
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public interface IResultFilterProvider
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{
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IEnumerable<IResultFilter> FiltersForQuery(TorznabQuery query);
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}
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public class ImdbTitleResultFilter : IResultFilter
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{
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public ImdbTitleResultFilter(IImdbResolver resolver, TorznabQuery query)
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{
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this.resolver = resolver;
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this.query = query;
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}
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public async Task<IEnumerable<ReleaseInfo>> FilterResults(IEnumerable<ReleaseInfo> results)
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{
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long? imdbId = null;
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try
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{
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var normalizedImdbId = String.Concat(query.ImdbID.Where(c => char.IsDigit(c)));
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imdbId = Int64.Parse(normalizedImdbId);
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}
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catch
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{
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}
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IEnumerable<ReleaseInfo> perfectResults;
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IEnumerable<ReleaseInfo> wrongResults;
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if (imdbId != null)
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{
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var resultsWithImdbId = results.Where(r => r.Imdb != null);
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wrongResults = resultsWithImdbId.Where(r => r.Imdb != imdbId);
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perfectResults = resultsWithImdbId.Where(r => r.Imdb == imdbId);
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}
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else
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{
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wrongResults = new ReleaseInfo[] { };
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perfectResults = new ReleaseInfo[] { };
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}
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var remainingResults = results.Except(wrongResults).Except(perfectResults);
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var titles = (await resolver.MovieForId(query.ImdbID.ToNonNull())).Title?.ToEnumerable() ?? Enumerable.Empty<string>();
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var strippedTitles = titles.Select(t => RemoveSpecialChars(t));
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var normalizedTitles = strippedTitles.SelectMany(t => GenerateTitleVariants(t));
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var titleFilteredResults = remainingResults.Where(r =>
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{
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// TODO Make it possible to configure case insensitivity
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var containsAnyTitle = normalizedTitles.Select(t => r.Title.ToLowerInvariant().Contains(t.ToLowerInvariant()));
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var isProbablyValidResult = containsAnyTitle.Any(b => b);
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return isProbablyValidResult;
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});
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var filteredResults = perfectResults.Concat(titleFilteredResults).Distinct();
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return filteredResults;
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}
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private static string RemoveSpecialChars(string title)
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{
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// TODO improve character replacement with invalid chars
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return title.Replace(":", "");
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}
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private static IEnumerable<string> GenerateTitleVariants(string title)
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{
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var delimiterVariants = new char[] { '.', '_' };
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var result = new List<string>();
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var replacedTitles = delimiterVariants.Select(c => title.Replace(' ', c));
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result.Add(title);
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result.AddRange(replacedTitles);
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return result;
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}
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private IImdbResolver resolver;
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private TorznabQuery query;
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}
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public class NoFilter : IResultFilter
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{
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public Task<IEnumerable<ReleaseInfo>> FilterResults(IEnumerable<ReleaseInfo> results)
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{
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return Task.FromResult(results);
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}
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}
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public class NoResultFilterProvider : IResultFilterProvider
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{
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public IEnumerable<IResultFilter> FiltersForQuery(TorznabQuery query)
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{
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return (new NoFilter()).ToEnumerable();
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}
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}
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public class ImdbTitleResultFilterProvider : IResultFilterProvider
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{
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public ImdbTitleResultFilterProvider(IImdbResolver resolver)
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{
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this.resolver = resolver;
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}
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public IEnumerable<IResultFilter> FiltersForQuery(TorznabQuery query)
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{
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IResultFilter filter = null;
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if (!query.IsImdbQuery)
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filter = new NoFilter();
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else
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filter = new ImdbTitleResultFilter(resolver, query);
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return filter.ToEnumerable();
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}
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private IImdbResolver resolver;
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}
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}
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