more kodi artwork fixes (#360)

CHANGELOG.md

@@ -10,7 +10,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Allow adding smart collections to multi collections
 
 ### Fixed
-- Use fake image extension (`.jpg`) for artwork in M3U and XMLTV to make Kodi happy since it detects MIME type from URL
+- Fix loading artwork in Kodi
+  - Use fake image extension (`.jpg`) for artwork in M3U and XMLTV since Kodi detects MIME type from URL
+  - Enable HEAD requests for IPTV image paths since Kodi requires those
 
 ## [0.0.56-alpha] - 2021-09-10
 ### Added

ErsatzTV.Core/Iptv/ChannelGuide.cs

@@ -58,7 +58,7 @@ namespace ErsatzTV.Core.Iptv
                         .Filter(a => a.ArtworkKind == ArtworkKind.Logo)
                         .HeadOrNone()
                         .Match(
-                            artwork => $"{_scheme}://{_host}/iptv/logos/{artwork.Path}",
+                            artwork => $"{_scheme}://{_host}/iptv/logos/{artwork.Path}.jpg",
                             () => $"{_scheme}://{_host}/iptv/images/ersatztv-500.png");
                     xml.WriteAttributeString("src", logo);
                     xml.WriteEndElement(); // icon

ErsatzTV/Controllers/ArtworkController.cs

@@ -35,7 +35,9 @@ namespace ErsatzTV.Controllers
             _httpClientFactory = httpClientFactory;
         }
 
+        [HttpHead("/iptv/artwork/posters/{fileName}")]
         [HttpGet("/iptv/artwork/posters/{fileName}")]
+        [HttpHead("/iptv/artwork/posters/{fileName}.jpg")]
         [HttpGet("/iptv/artwork/posters/{fileName}.jpg")]
         [HttpGet("/artwork/posters/{fileName}")]
         public async Task<IActionResult> GetPoster(string fileName)
@@ -68,8 +70,10 @@ namespace ErsatzTV.Controllers
         }
 
 
+        [HttpHead("/iptv/artwork/posters/jellyfin/{*path}")]
         [HttpGet("/iptv/artwork/posters/jellyfin/{*path}")]
         [HttpGet("/artwork/posters/jellyfin/{*path}")]
+        [HttpHead("/iptv/artwork/thumbnails/jellyfin/{*path}")]
         [HttpGet("/iptv/artwork/thumbnails/jellyfin/{*path}")]
         [HttpGet("/artwork/thumbnails/jellyfin/{*path}")]
         [HttpGet("/artwork/fanart/jellyfin/{*path}")]
@@ -83,8 +87,10 @@ namespace ErsatzTV.Controllers
             return GetJellyfinArtwork(path);
         }
 
+        [HttpHead("/iptv/artwork/posters/emby/{*path}")]
         [HttpGet("/iptv/artwork/posters/emby/{*path}")]
         [HttpGet("/artwork/posters/emby/{*path}")]
+        [HttpHead("/iptv/artwork/thumbnails/emby/{*path}")]
         [HttpGet("/iptv/artwork/thumbnails/emby/{*path}")]
         [HttpGet("/artwork/thumbnails/emby/{*path}")]
         [HttpGet("/artwork/fanart/emby/{*path}")]
@@ -98,6 +104,7 @@ namespace ErsatzTV.Controllers
             return GetEmbyArtwork(path);
         }
 
+        [HttpHead("/iptv/artwork/posters/plex/{plexMediaSourceId}/{*path}")]
         [HttpGet("/iptv/artwork/posters/plex/{plexMediaSourceId}/{*path}")]
         [HttpGet("/artwork/posters/plex/{plexMediaSourceId}/{*path}")]
         public Task<IActionResult> GetPlexPoster(int plexMediaSourceId, string path) =>
@@ -117,7 +124,9 @@ namespace ErsatzTV.Controllers
                 plexMediaSourceId,
                 $"photo/:/transcode?url=/{path}&height=220&width=392&minSize=1&upscale=0");
 
+        [HttpHead("/iptv/artwork/thumbnails/{fileName}")]
         [HttpGet("/iptv/artwork/thumbnails/{fileName}")]
+        [HttpHead("/iptv/artwork/thumbnails/{fileName}.jpg")]
         [HttpGet("/iptv/artwork/thumbnails/{fileName}.jpg")]
         [HttpGet("/artwork/thumbnails/{fileName}")]
         public async Task<IActionResult> GetThumbnail(string fileName)

ErsatzTV/Controllers/IptvController.cs

@@ -71,6 +71,7 @@ namespace ErsatzTV.Controllers
                         error => BadRequest(error.Value)));
 
         [HttpGet("iptv/logos/{fileName}")]
+        [HttpHead("iptv/logos/{fileName}.jpg")]
         [HttpGet("iptv/logos/{fileName}.jpg")]
         public async Task<IActionResult> GetImage(string fileName)
         {