Lidarr/NzbDrone.Core/Indexers/IndexerService.cs

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using System;
using System.Collections.Generic;
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using System.Linq;
using NLog;
using NzbDrone.Common.Messaging;
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using NzbDrone.Core.Lifecycle;
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namespace NzbDrone.Core.Indexers
{
public class Indexer
{
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public int Id { get; set; }
public string Name { get; set; }
public bool Enable { get; set; }
public IIndexerSetting Settings { get; set; }
public IIndexer Instance { get; set; }
}
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public interface IIndexerService
{
List<Indexer> All();
List<IIndexer> GetAvailableIndexers();
Indexer Get(string name);
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}
public class IndexerService : IIndexerService, IHandle<ApplicationStartedEvent>
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{
private readonly IIndexerRepository _indexerRepository;
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private readonly Logger _logger;
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private readonly List<IIndexer> _indexers;
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public IndexerService(IIndexerRepository indexerRepository, IEnumerable<IIndexer> indexers, Logger logger)
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{
_indexerRepository = indexerRepository;
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_logger = logger;
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_indexers = indexers.ToList();
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}
public List<Indexer> All()
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{
return _indexerRepository.All().Select(ToIndexer).ToList();
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}
public List<IIndexer> GetAvailableIndexers()
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{
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return All().Where(c => c.Enable && c.Settings.IsValid).Select(c => c.Instance).ToList();
}
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public Indexer Get(string name)
{
return ToIndexer(_indexerRepository.Get(name));
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}
private Indexer ToIndexer(IndexerDefinition definition)
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{
var indexer = new Indexer();
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indexer.Id = definition.Id;
indexer.Enable = definition.Enable;
indexer.Instance = GetInstance(definition);
indexer.Name = definition.Name;
if (indexer.Instance.GetType().GetMethod("ImportSettingsFromJson") != null)
{
indexer.Settings = ((dynamic)indexer.Instance).ImportSettingsFromJson(definition.Settings);
}
else
{
indexer.Settings = NullSetting.Instance;
}
return indexer;
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}
private IIndexer GetInstance(IndexerDefinition indexerDefinition)
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{
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var type = _indexers.Single(c => c.GetType().Name.Equals(indexerDefinition.Implementation, StringComparison.InvariantCultureIgnoreCase)).GetType();
var instance = (IIndexer)Activator.CreateInstance(type);
instance.InstanceDefinition = indexerDefinition;
return instance;
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}
public void Handle(ApplicationStartedEvent message)
{
_logger.Debug("Initializing indexers. Count {0}", _indexers.Count);
if (!All().Any())
{
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var definitions = _indexers.SelectMany(indexer => indexer.DefaultDefinitions);
_indexerRepository.InsertMany(definitions.ToList());
}
}
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}
}