Migrate from embedded covers to assets

lib/music_library_web/controllers/artist_controller.ex

@@ -31,11 +31,11 @@ defmodule MusicLibraryWeb.ArtistController do
     |> send_resp(304, "")
   end
 
-  defp respond_with_cache(conn, cover_data, etag) do
+  defp respond_with_cache(conn, image_data, etag) do
     conn
     |> put_resp_content_type("image/jpeg", "utf-8")
     |> put_resp_header("cache-control", "public, max-age=#{@cache_duration}")
     |> put_resp_header("etag", etag)
-    |> send_resp(200, cover_data)
+    |> send_resp(200, image_data)
   end
 end

lib/music_library_web/controllers/collection_json.ex

@@ -19,8 +19,8 @@ defmodule MusicLibraryWeb.CollectionJSON do
       id: record.id,
       artists: Enum.map(record.artists, & &1.name),
       title: record.title,
-      cover_url: url(~p"/api/covers/#{record.id}?#{[vsn: record.cover_hash]}"),
-      thumb_url: url(~p"/api/covers/#{record.id}?#{[vsn: record.cover_hash, size: 480]}")
+      cover_url: url(~p"/api/covers/#{record.cover_hash}"),
+      thumb_url: url(~p"/api/covers/#{record.cover_hash}?#{[size: 480]}")
     }
   end
 end

lib/music_library_web/controllers/cover_controller.ex

@@ -2,6 +2,7 @@ defmodule MusicLibraryWeb.CoverController do
   use MusicLibraryWeb, :controller
 
   alias MusicLibrary.Assets
+  alias MusicLibrary.Assets.Asset
   alias MusicLibrary.Records.Cover
 
   # 1 year in seconds
@@ -15,7 +16,7 @@ defmodule MusicLibraryWeb.CoverController do
       %{content: content} ->
         # TODO: find a way to cache computation, or pre-compute thumb and store it
         {:ok, thumb_data} = Cover.resize(content, String.to_integer(size))
-        hash = Cover.hash(thumb_data)
+        hash = Asset.hash(thumb_data)
 
         case get_req_header(conn, "if-none-match") do
           [^hash] -> extend_cache(conn)
@@ -57,11 +58,11 @@ defmodule MusicLibraryWeb.CoverController do
     |> send_resp(200, asset.content)
   end
 
-  defp respond_with_cache(conn, cover_data, etag) do
+  defp respond_with_cache(conn, data, etag) do
     conn
     |> put_resp_content_type("image/jpeg", "utf-8")
     |> put_resp_header("cache-control", "public, max-age=#{@cache_duration}")
     |> put_resp_header("etag", etag)
-    |> send_resp(200, cover_data)
+    |> send_resp(200, data)
   end
 end