Add blob extensions

app/controllers/downloads_controller.rb

@@ -29,7 +29,7 @@ def track
   end
 
   def blob
-    @blob ||= ActiveStorage::Blob.find_by(key: params[:key])
+    @blob ||= ActiveStorage::Blob.find_by(key: params[:key].split(".").first)
   end
 
   def add_cache_header

app/models/application_record.rb

@@ -1,10 +1,10 @@
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 
-  def blob_url(attachment, variant: nil, placeholder: nil)
+  def blob_url(attachment, variant: nil, placeholder: nil, ext: nil)
     if attachment.attached?
       key = variant ? attachment.variant(variant).processed.key : attachment.blob.key
-      "#{App.content_base_url}/blob/#{key}"
+      "#{App.content_base_url}/blob/#{key}#{".#{ext}" if ext}"
     elsif placeholder
       "/placeholders/#{placeholder}"
     end

app/models/concerns/has_cover_art.rb

@@ -5,19 +5,21 @@ module HasCoverArt
 
   included do # rubocop:disable Metrics/BlockLength
     def cover_art_urls
-      {
-        large: blob_url(cover_art, placeholder: "cover-art-large.jpg"),
-        medium: blob_url(cover_art, variant: :medium, placeholder: "cover-art-medium.jpg"),
-        small: blob_url(cover_art, variant: :small, placeholder: "cover-art-small.jpg")
-      }
+      %i[large medium small].index_with do |size|
+        blob_url \
+          cover_art,
+          **(size == :large ? {} : { variant: size }),
+          placeholder: "cover-art-#{size}.jpg",
+          ext: :jpg
+      end
     end
 
     def album_cover_url
-      blob_url(album_cover, placeholder: "cover-art-large.jpg")
+      blob_url(album_cover, placeholder: "cover-art-large.jpg", ext: :jpg)
     end
 
     def album_zip_url
-      blob_url(album_zip)
+      blob_url(album_zip, ext: :zip)
     end
 
     def cover_art_path

app/models/track.rb

@@ -51,11 +51,11 @@ def generate_slug(force: false)
   end
 
   def mp3_url
-    blob_url(mp3_audio, placeholder: "audio.mp3")
+    blob_url(mp3_audio, placeholder: "audio.mp3", ext: :mp3)
   end
 
   def waveform_image_url
-    blob_url(png_waveform, placeholder: "waveform.png")
+    blob_url(png_waveform, placeholder: "waveform.png", ext: :png)
   end
 
   def urls