jellyfin-server/MediaBrowser.Api/Images/RemoteImageService.cs
2018-09-12 19:26:21 +02:00

294 lines
11 KiB
C#

using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Net;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Providers;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.IO;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Services;
namespace MediaBrowser.Api.Images
{
public class BaseRemoteImageRequest : IReturn<RemoteImageResult>
{
[ApiMember(Name = "Type", Description = "The image type", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
public ImageType? Type { get; set; }
/// <summary>
/// Skips over a given number of items within the results. Use for paging.
/// </summary>
/// <value>The start index.</value>
[ApiMember(Name = "StartIndex", Description = "Optional. The record index to start at. All items with a lower index will be dropped from the results.", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
public int? StartIndex { get; set; }
/// <summary>
/// The maximum number of items to return
/// </summary>
/// <value>The limit.</value>
[ApiMember(Name = "Limit", Description = "Optional. The maximum number of records to return", IsRequired = false, DataType = "int", ParameterType = "query", Verb = "GET")]
public int? Limit { get; set; }
[ApiMember(Name = "ProviderName", Description = "Optional. The image provider to use", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET")]
public string ProviderName { get; set; }
[ApiMember(Name = "IncludeAllLanguages", Description = "Optional.", IsRequired = false, DataType = "bool", ParameterType = "query", Verb = "GET")]
public bool IncludeAllLanguages { get; set; }
}
[Route("/Items/{Id}/RemoteImages", "GET", Summary = "Gets available remote images for an item")]
[Authenticated]
public class GetRemoteImages : BaseRemoteImageRequest
{
/// <summary>
/// Gets or sets the id.
/// </summary>
/// <value>The id.</value>
[ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "GET")]
public string Id { get; set; }
}
[Route("/Items/{Id}/RemoteImages/Providers", "GET", Summary = "Gets available remote image providers for an item")]
[Authenticated]
public class GetRemoteImageProviders : IReturn<List<ImageProviderInfo>>
{
/// <summary>
/// Gets or sets the id.
/// </summary>
/// <value>The id.</value>
[ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "GET")]
public string Id { get; set; }
}
public class BaseDownloadRemoteImage : IReturnVoid
{
[ApiMember(Name = "Type", Description = "The image type", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "GET,POST")]
public ImageType Type { get; set; }
[ApiMember(Name = "ProviderName", Description = "The image provider", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET,POST")]
public string ProviderName { get; set; }
[ApiMember(Name = "ImageUrl", Description = "The image url", IsRequired = false, DataType = "string", ParameterType = "query", Verb = "GET,POST")]
public string ImageUrl { get; set; }
}
[Route("/Items/{Id}/RemoteImages/Download", "POST", Summary = "Downloads a remote image for an item")]
[Authenticated(Roles = "Admin")]
public class DownloadRemoteImage : BaseDownloadRemoteImage
{
/// <summary>
/// Gets or sets the id.
/// </summary>
/// <value>The id.</value>
[ApiMember(Name = "Id", Description = "Item Id", IsRequired = true, DataType = "string", ParameterType = "path", Verb = "POST")]
public string Id { get; set; }
}
[Route("/Images/Remote", "GET", Summary = "Gets a remote image")]
public class GetRemoteImage
{
[ApiMember(Name = "ImageUrl", Description = "The image url", IsRequired = true, DataType = "string", ParameterType = "query", Verb = "GET")]
public string ImageUrl { get; set; }
}
public class RemoteImageService : BaseApiService
{
private readonly IProviderManager _providerManager;
private readonly IServerApplicationPaths _appPaths;
private readonly IHttpClient _httpClient;
private readonly IFileSystem _fileSystem;
private readonly IDtoService _dtoService;
private readonly ILibraryManager _libraryManager;
public RemoteImageService(IProviderManager providerManager, IDtoService dtoService, IServerApplicationPaths appPaths, IHttpClient httpClient, IFileSystem fileSystem, ILibraryManager libraryManager)
{
_providerManager = providerManager;
_dtoService = dtoService;
_appPaths = appPaths;
_httpClient = httpClient;
_fileSystem = fileSystem;
_libraryManager = libraryManager;
}
public object Get(GetRemoteImageProviders request)
{
var item = _libraryManager.GetItemById(request.Id);
var result = GetImageProviders(item);
return ToOptimizedResult(result);
}
private List<ImageProviderInfo> GetImageProviders(BaseItem item)
{
return _providerManager.GetRemoteImageProviderInfo(item).ToList();
}
public async Task<object> Get(GetRemoteImages request)
{
var item = _libraryManager.GetItemById(request.Id);
var images = await _providerManager.GetAvailableRemoteImages(item, new RemoteImageQuery
{
ProviderName = request.ProviderName,
IncludeAllLanguages = request.IncludeAllLanguages,
IncludeDisabledProviders = true,
ImageType = request.Type
}, CancellationToken.None).ConfigureAwait(false);
var imagesList = images.ToArray();
var allProviders = _providerManager.GetRemoteImageProviderInfo(item);
if (request.Type.HasValue)
{
allProviders = allProviders.Where(i => i.SupportedImages.Contains(request.Type.Value));
}
var result = new RemoteImageResult
{
TotalRecordCount = imagesList.Length,
Providers = allProviders.Select(i => i.Name)
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToArray()
};
if (request.StartIndex.HasValue)
{
imagesList = imagesList.Skip(request.StartIndex.Value)
.ToArray();
}
if (request.Limit.HasValue)
{
imagesList = imagesList.Take(request.Limit.Value)
.ToArray();
}
result.Images = imagesList;
return result;
}
/// <summary>
/// Posts the specified request.
/// </summary>
/// <param name="request">The request.</param>
public Task Post(DownloadRemoteImage request)
{
var item = _libraryManager.GetItemById(request.Id);
return DownloadRemoteImage(item, request);
}
/// <summary>
/// Downloads the remote image.
/// </summary>
/// <param name="item">The item.</param>
/// <param name="request">The request.</param>
/// <returns>Task.</returns>
private async Task DownloadRemoteImage(BaseItem item, BaseDownloadRemoteImage request)
{
await _providerManager.SaveImage(item, request.ImageUrl, request.Type, null, CancellationToken.None).ConfigureAwait(false);
item.UpdateToRepository(ItemUpdateType.ImageUpdate, CancellationToken.None);
}
/// <summary>
/// Gets the specified request.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>System.Object.</returns>
public async Task<object> Get(GetRemoteImage request)
{
var urlHash = request.ImageUrl.GetMD5();
var pointerCachePath = GetFullCachePath(urlHash.ToString());
string contentPath;
try
{
contentPath = _fileSystem.ReadAllText(pointerCachePath);
if (_fileSystem.FileExists(contentPath))
{
return await ResultFactory.GetStaticFileResult(Request, contentPath).ConfigureAwait(false);
}
}
catch (FileNotFoundException)
{
// Means the file isn't cached yet
}
catch (IOException)
{
// Means the file isn't cached yet
}
await DownloadImage(request.ImageUrl, urlHash, pointerCachePath).ConfigureAwait(false);
// Read the pointer file again
contentPath = _fileSystem.ReadAllText(pointerCachePath);
return await ResultFactory.GetStaticFileResult(Request, contentPath).ConfigureAwait(false);
}
/// <summary>
/// Downloads the image.
/// </summary>
/// <param name="url">The URL.</param>
/// <param name="urlHash">The URL hash.</param>
/// <param name="pointerCachePath">The pointer cache path.</param>
/// <returns>Task.</returns>
private async Task DownloadImage(string url, Guid urlHash, string pointerCachePath)
{
using (var result = await _httpClient.GetResponse(new HttpRequestOptions
{
Url = url,
BufferContent = false
}).ConfigureAwait(false))
{
var ext = result.ContentType.Split('/').Last();
var fullCachePath = GetFullCachePath(urlHash + "." + ext);
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(fullCachePath));
using (var stream = result.Content)
{
using (var filestream = _fileSystem.GetFileStream(fullCachePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, true))
{
await stream.CopyToAsync(filestream).ConfigureAwait(false);
}
}
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(pointerCachePath));
_fileSystem.WriteAllText(pointerCachePath, fullCachePath);
}
}
/// <summary>
/// Gets the full cache path.
/// </summary>
/// <param name="filename">The filename.</param>
/// <returns>System.String.</returns>
private string GetFullCachePath(string filename)
{
return Path.Combine(_appPaths.CachePath, "remote-images", filename.Substring(0, 1), filename);
}
}
}