Add download rewrite for https://$artist.artstation.com/projects/$id.

app/logical/downloads/rewrite_strategies/art_station.rb

@@ -8,7 +8,7 @@ module Downloads
           if test_original(original_url)
             url = original_url
           end
-        elsif url =~ %r!https?://\w+\.artstation\.com/artwork/!
+        else
           url, headers = rewrite_html_url(url, headers)
         end
 
@@ -22,6 +22,8 @@ module Downloads
       end
 
       def rewrite_html_url(url, headers)
+        return [url, headers] unless Sources::Strategies::ArtStation.url_match?(url)
+
         source = Sources::Site.new(url)
         source.get
         [source.image_url, headers]

test/unit/downloads/art_station_test.rb

@@ -27,5 +27,18 @@ module Downloads
         assert_equal("https://cdna.artstation.com/p/assets/images/images/004/730/278/large/mendel-oh-dragonll.jpg", @download.source)
       end
     end
+
+    context "a download for a https://$artist.artstation.com/projects/$id page" do
+      setup do
+        @source = "https://dantewontdie.artstation.com/projects/YZK5q"
+        @tempfile = Tempfile.new("danbooru-test")
+        @download = Downloads::File.new(@source, @tempfile.path)
+        @download.download!
+      end
+
+      should "download the original image instead" do
+        assert_equal("https://cdna.artstation.com/p/assets/images/images/006/066/534/original/yinan-cui-reika.jpg?1495781565", @download.source)
+      end
+    end
   end
 end