Return quote_url through the API, don't render quotes more than 1 level deep

lib/pleroma/web/api_spec/schemas/status.ex

@@ -198,6 +198,12 @@ defmodule Pleroma.Web.ApiSpec.Schemas.Status do
             nullable: true,
             description: "Quoted status (if any)"
           },
+          quote_url: %Schema{
+            type: :string,
+            format: :uri,
+            nullable: true,
+            description: "URL of the quoted status"
+          },
           local: %Schema{
             type: :boolean,
             description: "`true` if the post was made on the local instance"

lib/pleroma/web/mastodon_api/views/status_view.ex

@@ -316,7 +316,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
 
     quote_post =
       if quote_activity do
-        quote_rendering_opts = Map.put(opts, :activity, quote_activity)
+        quote_rendering_opts = Map.merge(opts, %{activity: quote_activity, show_quote: false})
         render("show.json", quote_rendering_opts)
       else
         nil
@@ -431,6 +431,7 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
         context: object.data["context"],
         in_reply_to_account_acct: reply_to_user && reply_to_user.nickname,
         quote: quote_post,
+        quote_url: object.data["quoteUrl"],
         content: %{"text/plain" => content_plaintext},
         spoiler_text: %{"text/plain" => summary},
         expires_at: expires_at,
@@ -666,6 +667,10 @@ defmodule Pleroma.Web.MastodonAPI.StatusView do
     end
   end
 
+  def get_quote(_activity, %{show_quote: false}) do
+    nil
+  end
+
   def get_quote(activity, %{quoted_activities: quoted_activities}) do
     object = Object.normalize(activity, fetch: false)
     quoted_activities[object.data["quoteUrl"]]