Remove Metadata.Utils.attachment_url/1

This was a wasteful shortcut to MediaProxy.preview_url/1 and we don't
always want the preview_url in the metadata anyway.

lib/pleroma/web/metadata/providers/open_graph.ex

@@ -4,6 +4,7 @@
 
 defmodule Pleroma.Web.Metadata.Providers.OpenGraph do
   alias Pleroma.User
+  alias Pleroma.Web.MediaProxy
   alias Pleroma.Web.Metadata
   alias Pleroma.Web.Metadata.Providers.Provider
   alias Pleroma.Web.Metadata.Utils
@@ -36,8 +37,7 @@ def build_tags(%{
     ] ++
       if attachments == [] or Metadata.activity_nsfw?(object) do
         [
-          {:meta, [property: "og:image", content: Utils.attachment_url(User.avatar_url(user))],
-           []},
+          {:meta, [property: "og:image", content: MediaProxy.preview_url(User.avatar_url(user))], []},
           {:meta, [property: "og:image:width", content: 150], []},
           {:meta, [property: "og:image:height", content: 150], []}
         ]
@@ -58,7 +58,7 @@ def build_tags(%{user: user}) do
         {:meta, [property: "og:url", content: user.uri || user.ap_id], []},
         {:meta, [property: "og:description", content: truncated_bio], []},
         {:meta, [property: "og:type", content: "article"], []},
-        {:meta, [property: "og:image", content: Utils.attachment_url(User.avatar_url(user))], []},
+        {:meta, [property: "og:image", content: MediaProxy.preview_url(User.avatar_url(user))], []},
         {:meta, [property: "og:image:width", content: 150], []},
         {:meta, [property: "og:image:height", content: 150], []}
       ]
@@ -74,13 +74,17 @@ defp build_attachments(%{data: %{"attachment" => attachments}}) do
           case Utils.fetch_media_type(@media_types, url["mediaType"]) do
             "audio" ->
               [
-                {:meta, [property: "og:audio", content: Utils.attachment_url(url["href"])], []}
+                {:meta, [property: "og:audio", content: MediaProxy.url(url["href"])], []}
                 | acc
               ]
 
+            # Not using preview_url for this. It saves bandwidth, but the image dimensions will be wrong.
+            # We generate it on the fly and have no way to capture or analyze the image to get the dimensions.
+            # This can be an issue for apps/FEs rendering images in timelines too, but you can get clever with
+            # the aspect ratio metadata as a workaround.
             "image" ->
               [
-                {:meta, [property: "og:image", content: Utils.attachment_url(url["href"])], []},
+                {:meta, [property: "og:image", content: MediaProxy.url(url["href"])], []},
                 {:meta, [property: "og:image:alt", content: attachment["name"]], []}
                 | acc
               ]
@@ -88,7 +92,7 @@ defp build_attachments(%{data: %{"attachment" => attachments}}) do
 
             "video" ->
               [
-                {:meta, [property: "og:video", content: Utils.attachment_url(url["href"])], []}
+                {:meta, [property: "og:video", content: MediaProxy.url(url["href"])], []}
                 | acc
               ]
               |> maybe_add_dimensions(url)

lib/pleroma/web/metadata/providers/twitter_card.ex

@@ -5,6 +5,7 @@
 
 defmodule Pleroma.Web.Metadata.Providers.TwitterCard do
   alias Pleroma.User
+  alias Pleroma.Web.MediaProxy
   alias Pleroma.Web.Metadata
   alias Pleroma.Web.Metadata.Providers.Provider
   alias Pleroma.Web.Metadata.Utils
@@ -48,7 +49,8 @@ defp title_tag(user) do
   end
 
   def image_tag(user) do
-    {:meta, [property: "twitter:image", content: Utils.attachment_url(User.avatar_url(user))], []}
+    {:meta, [property: "twitter:image", content: MediaProxy.preview_url(User.avatar_url(user))],
+     []}
   end
 
   defp build_attachments(id, %{data: %{"attachment" => attachments}}) do
@@ -65,13 +67,17 @@ defp build_attachments(id, %{data: %{"attachment" => attachments}}) do
                 | acc
               ]
 
+            # Not using preview_url for this. It saves bandwidth, but the image dimensions will be wrong.
+            # We generate it on the fly and have no way to capture or analyze the image to get the dimensions.
+            # This can be an issue for apps/FEs rendering images in timelines too, but you can get clever with
+            # the aspect ratio metadata as a workaround.
             "image" ->
               [
                 {:meta, [property: "twitter:card", content: "summary_large_image"], []},
                 {:meta,
                  [
                    property: "twitter:player",
-                   content: Utils.attachment_url(url["href"])
+                   content: MediaProxy.url(url["href"])
                  ], []}
                 | acc
               ]
@@ -87,7 +93,7 @@ defp build_attachments(id, %{data: %{"attachment" => attachments}}) do
                 {:meta, [property: "twitter:player", content: player_url(id)], []},
                 {:meta, [property: "twitter:player:width", content: "#{width}"], []},
                 {:meta, [property: "twitter:player:height", content: "#{height}"], []},
-                {:meta, [property: "twitter:player:stream", content: url["href"]], []},
+                {:meta, [property: "twitter:player:stream", content: MediaProxy.url(url["href"])], []},
                 {:meta,
                  [property: "twitter:player:stream:content_type", content: url["mediaType"]], []}
                 | acc

lib/pleroma/web/metadata/utils.ex

@@ -7,7 +7,6 @@ defmodule Pleroma.Web.Metadata.Utils do
   alias Pleroma.Emoji
   alias Pleroma.Formatter
   alias Pleroma.HTML
-  alias Pleroma.Web.MediaProxy
 
   def scrub_html_and_truncate(%{data: %{"content" => content}} = object) do
     content
@@ -38,10 +37,6 @@ def scrub_html(content) when is_binary(content) do
 
   def scrub_html(content), do: content
 
-  def attachment_url(url) do
-    MediaProxy.preview_url(url)
-  end
-
   def user_name_string(user) do
     "#{user.name} " <>
       if user.local do