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using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Audio;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Querying;
using MediaBrowser.Model.Search;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Extensions;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Extensions;
namespace Emby.Server.Implementations.Library
{
/// <summary>
/// </summary>
public class SearchEngine : ISearchEngine
{
private readonly ILibraryManager _libraryManager;
private readonly IUserManager _userManager;
private readonly ILogger _logger;
public SearchEngine(ILogManager logManager, ILibraryManager libraryManager, IUserManager userManager)
{
_libraryManager = libraryManager;
_userManager = userManager;
_logger = logManager.GetLogger("SearchEngine");
}
public QueryResult<SearchHintInfo> GetSearchHints(SearchQuery query)
{
User user = null;
if (query.UserId.Equals(Guid.Empty))
{
}
else
{
user = _userManager.GetUserById(query.UserId);
}
var results = GetSearchHints(query, user);
var totalRecordCount = results.Count;
if (query.StartIndex.HasValue)
{
results = results.Skip(query.StartIndex.Value).ToList();
}
if (query.Limit.HasValue)
{
results = results.Take(query.Limit.Value).ToList();
}
return new QueryResult<SearchHintInfo>
{
TotalRecordCount = totalRecordCount,
Items = results.ToArray()
};
}
private void AddIfMissing(List<string> list, string value)
{
if (!list.Contains(value, StringComparer.OrdinalIgnoreCase))
{
list.Add(value);
}
}
/// <summary>
/// Gets the search hints.
/// </summary>
/// <param name="query">The query.</param>
/// <param name="user">The user.</param>
/// <returns>IEnumerable{SearchHintResult}.</returns>
/// <exception cref="System.ArgumentNullException">searchTerm</exception>
private List<SearchHintInfo> GetSearchHints(SearchQuery query, User user)
{
var searchTerm = query.SearchTerm;
if (string.IsNullOrEmpty(searchTerm))
{
throw new ArgumentNullException("searchTerm");
}
searchTerm = searchTerm.Trim().RemoveDiacritics();
var excludeItemTypes = query.ExcludeItemTypes.ToList();
var includeItemTypes = (query.IncludeItemTypes ?? Array.Empty<string>()).ToList();
excludeItemTypes.Add(typeof(Year).Name);
excludeItemTypes.Add(typeof(Folder).Name);
if (query.IncludeGenres && (includeItemTypes.Count == 0 || includeItemTypes.Contains("Genre", StringComparer.OrdinalIgnoreCase)))
{
if (!query.IncludeMedia)
{
AddIfMissing(includeItemTypes, typeof(Genre).Name);
AddIfMissing(includeItemTypes, typeof(GameGenre).Name);
AddIfMissing(includeItemTypes, typeof(MusicGenre).Name);
}
}
else
{
AddIfMissing(excludeItemTypes, typeof(Genre).Name);
AddIfMissing(excludeItemTypes, typeof(GameGenre).Name);
AddIfMissing(excludeItemTypes, typeof(MusicGenre).Name);
}
if (query.IncludePeople && (includeItemTypes.Count == 0 || includeItemTypes.Contains("People", StringComparer.OrdinalIgnoreCase) || includeItemTypes.Contains("Person", StringComparer.OrdinalIgnoreCase)))
{
if (!query.IncludeMedia)
{
AddIfMissing(includeItemTypes, typeof(Person).Name);
}
}
else
{
AddIfMissing(excludeItemTypes, typeof(Person).Name);
}
if (query.IncludeStudios && (includeItemTypes.Count == 0 || includeItemTypes.Contains("Studio", StringComparer.OrdinalIgnoreCase)))
{
if (!query.IncludeMedia)
{
AddIfMissing(includeItemTypes, typeof(Studio).Name);
}
}
else
{
AddIfMissing(excludeItemTypes, typeof(Studio).Name);
}
if (query.IncludeArtists && (includeItemTypes.Count == 0 || includeItemTypes.Contains("MusicArtist", StringComparer.OrdinalIgnoreCase)))
{
if (!query.IncludeMedia)
{
AddIfMissing(includeItemTypes, typeof(MusicArtist).Name);
}
}
else
{
AddIfMissing(excludeItemTypes, typeof(MusicArtist).Name);
}
AddIfMissing(excludeItemTypes, typeof(CollectionFolder).Name);
AddIfMissing(excludeItemTypes, typeof(Folder).Name);
var mediaTypes = query.MediaTypes.ToList();
if (includeItemTypes.Count > 0)
{
excludeItemTypes.Clear();
mediaTypes.Clear();
}
var searchQuery = new InternalItemsQuery(user)
{
SearchTerm = searchTerm,
ExcludeItemTypes = excludeItemTypes.ToArray(),
IncludeItemTypes = includeItemTypes.ToArray(),
Limit = query.Limit,
IncludeItemsByName = string.IsNullOrEmpty(query.ParentId),
ParentId = string.IsNullOrEmpty(query.ParentId) ? Guid.Empty : new Guid(query.ParentId),
OrderBy = new[] { new ValueTuple<string, SortOrder>(ItemSortBy.SortName, SortOrder.Ascending) },
Recursive = true,
IsKids = query.IsKids,
IsMovie = query.IsMovie,
IsNews = query.IsNews,
IsSeries = query.IsSeries,
IsSports = query.IsSports,
MediaTypes = mediaTypes.ToArray(),
DtoOptions = new DtoOptions
{
Fields = new ItemFields[]
{
ItemFields.AirTime,
ItemFields.DateCreated,
ItemFields.ChannelInfo,
ItemFields.ParentId
}
}
};
List<BaseItem> mediaItems;
if (searchQuery.IncludeItemTypes.Length == 1 && string.Equals(searchQuery.IncludeItemTypes[0], "MusicArtist", StringComparison.OrdinalIgnoreCase))
{
if (!searchQuery.ParentId.Equals(Guid.Empty))
{
searchQuery.AncestorIds = new[] { searchQuery.ParentId };
}
searchQuery.ParentId = Guid.Empty;
searchQuery.IncludeItemsByName = true;
searchQuery.IncludeItemTypes = Array.Empty<string>();
mediaItems = _libraryManager.GetAllArtists(searchQuery).Items.Select(i => i.Item1).ToList();
}
else
{
mediaItems = _libraryManager.GetItemList(searchQuery);
}
return mediaItems.Select(i => new SearchHintInfo
{
Item = i
}).ToList();
}
}
}
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