1 files changed, 268 insertions, 0 deletions
diff --git a/Jellyfin.Api/Controllers/RemoteImageController.cs b/Jellyfin.Api/Controllers/RemoteImageController.cs
new file mode 100644
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+++ b/Jellyfin.Api/Controllers/RemoteImageController.cs
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+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.IO;
+using System.Linq;
+using System.Net.Mime;
+using System.Threading;
+using System.Threading.Tasks;
+using Jellyfin.Api.Constants;
+using MediaBrowser.Common.Extensions;
+using MediaBrowser.Common.Net;
+using MediaBrowser.Controller;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.Providers;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Net;
+using MediaBrowser.Model.Providers;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+
+namespace Jellyfin.Api.Controllers
+{
+    /// <summary>
+    /// Remote Images Controller.
+    /// </summary>
+    [Route("")]
+    public class RemoteImageController : BaseJellyfinApiController
+    {
+        private readonly IProviderManager _providerManager;
+        private readonly IServerApplicationPaths _applicationPaths;
+        private readonly IHttpClient _httpClient;
+        private readonly ILibraryManager _libraryManager;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="RemoteImageController"/> class.
+        /// </summary>
+        /// <param name="providerManager">Instance of the <see cref="IProviderManager"/> interface.</param>
+        /// <param name="applicationPaths">Instance of the <see cref="IServerApplicationPaths"/> interface.</param>
+        /// <param name="httpClient">Instance of the <see cref="IHttpClient"/> interface.</param>
+        /// <param name="libraryManager">Instance of the <see cref="ILibraryManager"/> interface.</param>
+        public RemoteImageController(
+            IProviderManager providerManager,
+            IServerApplicationPaths applicationPaths,
+            IHttpClient httpClient,
+            ILibraryManager libraryManager)
+        {
+            _providerManager = providerManager;
+            _applicationPaths = applicationPaths;
+            _httpClient = httpClient;
+            _libraryManager = libraryManager;
+        }
+
+        /// <summary>
+        /// Gets available remote images for an item.
+        /// </summary>
+        /// <param name="itemId">Item Id.</param>
+        /// <param name="type">The image type.</param>
+        /// <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="providerName">Optional. The image provider to use.</param>
+        /// <param name="includeAllLanguages">Optional. Include all languages.</param>
+        /// <response code="200">Remote Images returned.</response>
+        /// <response code="404">Item not found.</response>
+        /// <returns>Remote Image Result.</returns>
+        [HttpGet("Items/{itemId}/RemoteImages")]
+        [Authorize(Policy = Policies.DefaultAuthorization)]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        public async Task<ActionResult<RemoteImageResult>> GetRemoteImages(
+            [FromRoute] Guid itemId,
+            [FromQuery] ImageType? type,
+            [FromQuery] int? startIndex,
+            [FromQuery] int? limit,
+            [FromQuery] string? providerName,
+            [FromQuery] bool includeAllLanguages = false)
+        {
+            var item = _libraryManager.GetItemById(itemId);
+            if (item == null)
+            {
+                return NotFound();
+            }
+
+            var images = await _providerManager.GetAvailableRemoteImages(
+                    item,
+                    new RemoteImageQuery(providerName ?? string.Empty)
+                    {
+                        IncludeAllLanguages = includeAllLanguages,
+                        IncludeDisabledProviders = true,
+                        ImageType = type
+                    }, CancellationToken.None)
+                .ConfigureAwait(false);
+
+            var imageArray = images.ToArray();
+            var allProviders = _providerManager.GetRemoteImageProviderInfo(item);
+            if (type.HasValue)
+            {
+                allProviders = allProviders.Where(o => o.SupportedImages.Contains(type.Value));
+            }
+
+            var result = new RemoteImageResult
+            {
+                TotalRecordCount = imageArray.Length,
+                Providers = allProviders.Select(o => o.Name)
+                    .Distinct(StringComparer.OrdinalIgnoreCase)
+                    .ToArray()
+            };
+
+            if (startIndex.HasValue)
+            {
+                imageArray = imageArray.Skip(startIndex.Value).ToArray();
+            }
+
+            if (limit.HasValue)
+            {
+                imageArray = imageArray.Take(limit.Value).ToArray();
+            }
+
+            result.Images = imageArray;
+            return result;
+        }
+
+        /// <summary>
+        /// Gets available remote image providers for an item.
+        /// </summary>
+        /// <param name="itemId">Item Id.</param>
+        /// <response code="200">Returned remote image providers.</response>
+        /// <response code="404">Item not found.</response>
+        /// <returns>List of remote image providers.</returns>
+        [HttpGet("Items/{itemId}/RemoteImages/Providers")]
+        [Authorize(Policy = Policies.DefaultAuthorization)]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        public ActionResult<IEnumerable<ImageProviderInfo>> GetRemoteImageProviders([FromRoute] Guid itemId)
+        {
+            var item = _libraryManager.GetItemById(itemId);
+            if (item == null)
+            {
+                return NotFound();
+            }
+
+            return Ok(_providerManager.GetRemoteImageProviderInfo(item));
+        }
+
+        /// <summary>
+        /// Gets a remote image.
+        /// </summary>
+        /// <param name="imageUrl">The image url.</param>
+        /// <response code="200">Remote image returned.</response>
+        /// <response code="404">Remote image not found.</response>
+        /// <returns>Image Stream.</returns>
+        [HttpGet("Images/Remote")]
+        [Produces(MediaTypeNames.Application.Octet)]
+        [ProducesResponseType(StatusCodes.Status200OK)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        public async Task<ActionResult> GetRemoteImage([FromQuery, Required] string imageUrl)
+        {
+            var urlHash = imageUrl.GetMD5();
+            var pointerCachePath = GetFullCachePath(urlHash.ToString());
+
+            string? contentPath = null;
+            var hasFile = false;
+
+            try
+            {
+                contentPath = await System.IO.File.ReadAllTextAsync(pointerCachePath).ConfigureAwait(false);
+                if (System.IO.File.Exists(contentPath))
+                {
+                    hasFile = true;
+                }
+            }
+            catch (FileNotFoundException)
+            {
+                // The file isn't cached yet
+            }
+            catch (IOException)
+            {
+                // The file isn't cached yet
+            }
+
+            if (!hasFile)
+            {
+                await DownloadImage(imageUrl, urlHash, pointerCachePath).ConfigureAwait(false);
+                contentPath = await System.IO.File.ReadAllTextAsync(pointerCachePath).ConfigureAwait(false);
+            }
+
+            if (string.IsNullOrEmpty(contentPath))
+            {
+                return NotFound();
+            }
+
+            var contentType = MimeTypes.GetMimeType(contentPath);
+            return File(System.IO.File.OpenRead(contentPath), contentType);
+        }
+
+        /// <summary>
+        /// Downloads a remote image for an item.
+        /// </summary>
+        /// <param name="itemId">Item Id.</param>
+        /// <param name="type">The image type.</param>
+        /// <param name="imageUrl">The image url.</param>
+        /// <response code="204">Remote image downloaded.</response>
+        /// <response code="404">Remote image not found.</response>
+        /// <returns>Download status.</returns>
+        [HttpPost("Items/{itemId}/RemoteImages/Download")]
+        [Authorize(Policy = Policies.RequiresElevation)]
+        [ProducesResponseType(StatusCodes.Status204NoContent)]
+        [ProducesResponseType(StatusCodes.Status404NotFound)]
+        public async Task<ActionResult> DownloadRemoteImage(
+            [FromRoute] Guid itemId,
+            [FromQuery, Required] ImageType type,
+            [FromQuery] string? imageUrl)
+        {
+            var item = _libraryManager.GetItemById(itemId);
+            if (item == null)
+            {
+                return NotFound();
+            }
+
+            await _providerManager.SaveImage(item, imageUrl, type, null, CancellationToken.None)
+                .ConfigureAwait(false);
+
+            item.UpdateToRepository(ItemUpdateType.ImageUpdate, CancellationToken.None);
+            return NoContent();
+        }
+
+        /// <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(_applicationPaths.CachePath, "remote-images", filename.Substring(0, 1), filename);
+        }
+
+        /// <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);
+
+            Directory.CreateDirectory(Path.GetDirectoryName(fullCachePath));
+            await using (var stream = result.Content)
+            {
+                await using var fileStream = new FileStream(fullCachePath, FileMode.Create, FileAccess.Write, FileShare.Read, IODefaults.FileStreamBufferSize, true);
+                await stream.CopyToAsync(fileStream).ConfigureAwait(false);
+            }
+
+            Directory.CreateDirectory(Path.GetDirectoryName(pointerCachePath));
+            await System.IO.File.WriteAllTextAsync(pointerCachePath, fullCachePath, CancellationToken.None)
+                .ConfigureAwait(false);
+        }
+    }
+}