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using System;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using Jellyfin.Api.Constants;
using Jellyfin.Api.Extensions;
using Jellyfin.Api.Helpers;
using Jellyfin.Api.ModelBinders;
using Jellyfin.Data.Entities;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Querying;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Genre = MediaBrowser.Controller.Entities.Genre;
namespace Jellyfin.Api.Controllers
{
/// <summary>
/// The genres controller.
/// </summary>
[Authorize(Policy = Policies.DefaultAuthorization)]
public class GenresController : BaseJellyfinApiController
{
private readonly IUserManager _userManager;
private readonly ILibraryManager _libraryManager;
private readonly IDtoService _dtoService;
/// <summary>
/// Initializes a new instance of the <see cref="GenresController"/> class.
/// </summary>
/// <param name="userManager">Instance of the <see cref="IUserManager"/> interface.</param>
/// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
/// <param name="dtoService">Instance of the <see cref="IDtoService"/> interface.</param>
public GenresController(
IUserManager userManager,
ILibraryManager libraryManager,
IDtoService dtoService)
{
_userManager = userManager;
_libraryManager = libraryManager;
_dtoService = dtoService;
}
/// <summary>
/// Gets all genres from a given item, folder, or the entire library.
/// </summary>
/// <param name="startIndex">Optional. The record index to start at. All items with a lower index will be dropped from the results.</param>
/// <param name="limit">Optional. The maximum number of records to return.</param>
/// <param name="searchTerm">The search term.</param>
/// <param name="parentId">Specify this to localize the search to a specific item or folder. Omit to use the root.</param>
/// <param name="fields">Optional. Specify additional fields of information to return in the output.</param>
/// <param name="excludeItemTypes">Optional. If specified, results will be filtered out based on item type. This allows multiple, comma delimited.</param>
/// <param name="includeItemTypes">Optional. If specified, results will be filtered in based on item type. This allows multiple, comma delimited.</param>
/// <param name="isFavorite">Optional filter by items that are marked as favorite, or not.</param>
/// <param name="imageTypeLimit">Optional, the max number of images to return, per image type.</param>
/// <param name="enableImageTypes">Optional. The image types to include in the output.</param>
/// <param name="userId">User id.</param>
/// <param name="nameStartsWithOrGreater">Optional filter by items whose name is sorted equally or greater than a given input string.</param>
/// <param name="nameStartsWith">Optional filter by items whose name is sorted equally than a given input string.</param>
/// <param name="nameLessThan">Optional filter by items whose name is equally or lesser than a given input string.</param>
/// <param name="enableImages">Optional, include image information in output.</param>
/// <param name="enableTotalRecordCount">Optional. Include total record count.</param>
/// <response code="200">Genres returned.</response>
/// <returns>An <see cref="OkResult"/> containing the queryresult of genres.</returns>
[HttpGet]
[ProducesResponseType(StatusCodes.Status200OK)]
public ActionResult<QueryResult<BaseItemDto>> GetGenres(
[FromQuery] int? startIndex,
[FromQuery] int? limit,
[FromQuery] string? searchTerm,
[FromQuery] string? parentId,
[FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ItemFields[] fields,
[FromQuery] string? excludeItemTypes,
[FromQuery] string? includeItemTypes,
[FromQuery] bool? isFavorite,
[FromQuery] int? imageTypeLimit,
[FromQuery, ModelBinder(typeof(CommaDelimitedArrayModelBinder))] ImageType[] enableImageTypes,
[FromQuery] Guid? userId,
[FromQuery] string? nameStartsWithOrGreater,
[FromQuery] string? nameStartsWith,
[FromQuery] string? nameLessThan,
[FromQuery] bool? enableImages = true,
[FromQuery] bool enableTotalRecordCount = true)
{
var dtoOptions = new DtoOptions { Fields = fields }
.AddClientFields(Request)
.AddAdditionalDtoOptions(enableImages, false, imageTypeLimit, enableImageTypes);
User? user = userId.HasValue && userId != Guid.Empty ? _userManager.GetUserById(userId.Value) : null;
var parentItem = _libraryManager.GetParentItem(parentId, userId);
var query = new InternalItemsQuery(user)
{
ExcludeItemTypes = RequestHelpers.Split(excludeItemTypes, ',', true),
IncludeItemTypes = RequestHelpers.Split(includeItemTypes, ',', true),
StartIndex = startIndex,
Limit = limit,
IsFavorite = isFavorite,
NameLessThan = nameLessThan,
NameStartsWith = nameStartsWith,
NameStartsWithOrGreater = nameStartsWithOrGreater,
DtoOptions = dtoOptions,
SearchTerm = searchTerm,
EnableTotalRecordCount = enableTotalRecordCount
};
if (!string.IsNullOrWhiteSpace(parentId))
{
if (parentItem is Folder)
{
query.AncestorIds = new[] { new Guid(parentId) };
}
else
{
query.ItemIds = new[] { new Guid(parentId) };
}
}
QueryResult<(BaseItem, ItemCounts)> result;
if (parentItem is ICollectionFolder parentCollectionFolder
&& (string.Equals(parentCollectionFolder.CollectionType, CollectionType.Music, StringComparison.Ordinal)
|| string.Equals(parentCollectionFolder.CollectionType, CollectionType.MusicVideos, StringComparison.Ordinal)))
{
result = _libraryManager.GetMusicGenres(query);
}
else
{
result = _libraryManager.GetGenres(query);
}
var shouldIncludeItemTypes = !string.IsNullOrEmpty(includeItemTypes);
return RequestHelpers.CreateQueryResult(result, dtoOptions, _dtoService, shouldIncludeItemTypes, user);
}
/// <summary>
/// Gets a genre, by name.
/// </summary>
/// <param name="genreName">The genre name.</param>
/// <param name="userId">The user id.</param>
/// <response code="200">Genres returned.</response>
/// <returns>An <see cref="OkResult"/> containing the genre.</returns>
[HttpGet("{genreName}")]
[ProducesResponseType(StatusCodes.Status200OK)]
public ActionResult<BaseItemDto> GetGenre([FromRoute, Required] string genreName, [FromQuery] Guid? userId)
{
var dtoOptions = new DtoOptions()
.AddClientFields(Request);
Genre item = new Genre();
if (genreName.IndexOf(BaseItem.SlugChar, StringComparison.OrdinalIgnoreCase) != -1)
{
var result = GetItemFromSlugName<Genre>(_libraryManager, genreName, dtoOptions);
if (result != null)
{
item = result;
}
}
else
{
item = _libraryManager.GetGenre(genreName);
}
if (userId.HasValue && !userId.Equals(Guid.Empty))
{
var user = _userManager.GetUserById(userId.Value);
return _dtoService.GetBaseItemDto(item, dtoOptions, user);
}
return _dtoService.GetBaseItemDto(item, dtoOptions);
}
private T GetItemFromSlugName<T>(ILibraryManager libraryManager, string name, DtoOptions dtoOptions)
where T : BaseItem, new()
{
var result = libraryManager.GetItemList(new InternalItemsQuery
{
Name = name.Replace(BaseItem.SlugChar, '&'),
IncludeItemTypes = new[] { typeof(T).Name },
DtoOptions = dtoOptions
}).OfType<T>().FirstOrDefault();
result ??= libraryManager.GetItemList(new InternalItemsQuery
{
Name = name.Replace(BaseItem.SlugChar, '/'),
IncludeItemTypes = new[] { typeof(T).Name },
DtoOptions = dtoOptions
}).OfType<T>().FirstOrDefault();
result ??= libraryManager.GetItemList(new InternalItemsQuery
{
Name = name.Replace(BaseItem.SlugChar, '?'),
IncludeItemTypes = new[] { typeof(T).Name },
DtoOptions = dtoOptions
}).OfType<T>().FirstOrDefault();
return result;
}
}
}
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