New: Get series images via the API (3rd party app support)

src/NzbDrone.Api/MediaCovers/MediaCoverModule.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using Nancy;
+using Nancy.Responses;
+using NzbDrone.Common;
+using NzbDrone.Common.Disk;
+using NzbDrone.Common.EnvironmentInfo;
+
+namespace NzbDrone.Api.MediaCovers
+{
+    public class MediaCoverModule : NzbDroneApiModule
+    {
+        private const string MEDIA_COVER_ROUTE = @"/(?<seriesId>\d+)/(?<filename>(.+)\.(jpg|png|gif))";
+
+        private readonly IAppFolderInfo _appFolderInfo;
+        private readonly IDiskProvider _diskProvider;
+
+        public MediaCoverModule(IAppFolderInfo appFolderInfo, IDiskProvider diskProvider) : base("MediaCover")
+        {
+            _appFolderInfo = appFolderInfo;
+            _diskProvider = diskProvider;
+
+            Get[MEDIA_COVER_ROUTE] = options => GetMediaCover(options.seriesId, options.filename);
+        }
+
+        private Response GetMediaCover(int seriesId, string filename)
+        {
+            var filePath = Path.Combine(_appFolderInfo.GetAppDataPath(), "MediaCover", seriesId.ToString(), filename);
+
+            if (!_diskProvider.FileExists(filePath))
+                return new NotFoundResponse();
+
+            return new StreamResponse(() => File.OpenRead(filePath), MimeTypes.GetMimeType(filePath));
+        }
+    }
+}

src/NzbDrone.Api/NzbDrone.Api.csproj

@@ -140,6 +140,7 @@
     <Compile Include="Health\HealthModule.cs" />
     <Compile Include="History\HistoryResource.cs" />
     <Compile Include="History\HistoryModule.cs" />
+    <Compile Include="MediaCovers\MediaCoverModule.cs" />
     <Compile Include="Metadata\MetadataResource.cs" />
     <Compile Include="Metadata\MetadataModule.cs" />
     <Compile Include="Notifications\NotificationSchemaModule.cs" />