Added code to compensate for yt-dlp bug

lib/pinchflat/metadata/metadata_parser.ex

@@ -54,10 +54,23 @@ defmodule Pinchflat.Metadata.MetadataParser do
       |> Enum.reverse()
       |> Enum.find_value(fn attrs -> attrs["filepath"] end)
 
+    if thumbnail_filepath do
+      # NOTE: whole ordeal needed due to a bug I found in yt-dlp
+      # https://github.com/yt-dlp/yt-dlp/issues/9445
+      # Can be reverted to remove this entire conditional once fixed
+      %{
+        thumbnail_filepath:
+          thumbnail_filepath
+          |> String.split(~r{\.}, include_captures: true)
+          |> List.insert_at(-3, "-thumb")
+          |> Enum.join()
+      }
+    else
       %{
         thumbnail_filepath: thumbnail_filepath
       }
     end
+  end
 
   defp parse_infojson_metadata(metadata) do
     %{

test/pinchflat/metadata/metadata_parser_test.exs

@@ -94,6 +94,15 @@ defmodule Pinchflat.Metadata.MetadataParserTest do
       assert String.ends_with?(result.thumbnail_filepath, ".webp")
     end
 
+    # NOTE: this can be removed once this bug is fixed
+    # https://github.com/yt-dlp/yt-dlp/issues/9445
+    # and the associated conditional in the parser is removed
+    test "automatically appends `-thumb` to the thumbnail filename", %{metadata: metadata} do
+      result = Parser.parse_for_media_item(metadata)
+
+      assert String.contains?(result.thumbnail_filepath, "-thumb.webp")
+    end
+
     test "doesn't freak out if the media has no thumbnails", %{metadata: metadata} do
       metadata = Map.put(metadata, "thumbnails", %{})