fix attachment links

lib/something_erlang/awful_api/thread.ex

@@ -111,7 +111,11 @@ defmodule SomethingErlang.AwfulApi.Thread do
     if class == "sa-smilie" do
       {"img", attrs, []}
     else
-      t_attrs = List.keyreplace(attrs, "class", 0, {"class", "img-responsive"})
+      t_attrs =
+        attrs
+        |> fix_attachment_links()
+        |> List.keyreplace("class", 0, {"class", "img-responsive"})
+
       {"img", [{"loading", "lazy"} | t_attrs], []}
     end
   end
@@ -194,4 +198,15 @@ defmodule SomethingErlang.AwfulApi.Thread do
             {"src", src}
           ], []}
        ]}
+
+  defp fix_attachment_links(attrs) do
+    {"src", src} = List.keyfind(attrs, "src", 0)
+
+    if String.starts_with?(src, "attachment.php") do
+      List.keyreplace(attrs, "src", 0, {"src", "https://forums.somethingawful.com/" <> src})
+      |> List.keydelete("alt", 0)
+    else
+      attrs
+    end
+  end
 end