5 files changed, 17 insertions, 7 deletions
diff --git a/lib/pleroma/user.ex b/lib/pleroma/user.ex
index 06cdb42af..b69709db4 100644
--- a/lib/pleroma/user.ex
+++ b/lib/pleroma/user.ex
@@ -2031,6 +2031,15 @@ defmodule Pleroma.User do
     |> hd()
   end
 
+  def full_nickname(%User{} = user) do
+    if String.contains?(user.nickname, "@") do
+      user.nickname
+    else
+      %{host: host} = URI.parse(user.ap_id)
+      user.nickname <> "@" <> host
+    end
+  end
+
   def full_nickname(nickname_or_mention),
     do: String.trim_leading(nickname_or_mention, "@")
 
diff --git a/lib/pleroma/web/mastodon_api/views/account_view.ex b/lib/pleroma/web/mastodon_api/views/account_view.ex
index 63417142f..ac25aefdd 100644
--- a/lib/pleroma/web/mastodon_api/views/account_view.ex
+++ b/lib/pleroma/web/mastodon_api/views/account_view.ex
@@ -262,7 +262,9 @@ defmodule Pleroma.Web.MastodonAPI.AccountView do
         }
       },
 
-      # Pleroma extension
+      # Pleroma extensions
+      # Note: it's insecure to output :email but fully-qualified nickname may serve as safe stub
+      fqn: User.full_nickname(user),
       pleroma: %{
         ap_id: user.ap_id,
         also_known_as: user.also_known_as,
diff --git a/lib/pleroma/web/router.ex b/lib/pleroma/web/router.ex
index 7521f5dc3..2105d7e9e 100644
--- a/lib/pleroma/web/router.ex
+++ b/lib/pleroma/web/router.ex
@@ -320,6 +320,8 @@ defmodule Pleroma.Web.Router do
   end
 
   scope "/oauth", Pleroma.Web.OAuth do
+    # Note: use /api/v1/accounts/verify_credentials for userinfo of signed-in user
+
     get("/registration_details", OAuthController, :registration_details)
 
     post("/mfa/verify", MFAController, :verify, as: :mfa_verify)
diff --git a/lib/pleroma/web/templates/embed/show.html.eex b/lib/pleroma/web/templates/embed/show.html.eex
index 05a3f0ee3..092b52b70 100644
--- a/lib/pleroma/web/templates/embed/show.html.eex
+++ b/lib/pleroma/web/templates/embed/show.html.eex
@@ -6,7 +6,7 @@
       </div>
       <span class="display-name" style="padding-left: 0.5em;">
         <bdi><%= raw (@author.name |> Formatter.emojify(@author.emoji)) %></bdi>
-        <span class="nickname"><%= full_nickname(@author) %></span>
+        <span class="nickname">@<%= full_nickname(@author) %></span>
       </span>
     </a>
   </div>
diff --git a/lib/pleroma/web/views/embed_view.ex b/lib/pleroma/web/views/embed_view.ex
index cb7600adb..81e196730 100644
--- a/lib/pleroma/web/views/embed_view.ex
+++ b/lib/pleroma/web/views/embed_view.ex
@@ -17,6 +17,8 @@ defmodule Pleroma.Web.EmbedView do
 
   use Phoenix.HTML
 
+  defdelegate full_nickname(user), to: User
+
   @media_types ["image", "audio", "video"]
 
   defp fetch_media_type(%{"mediaType" => mediaType}) do
@@ -30,11 +32,6 @@ defmodule Pleroma.Web.EmbedView do
     )
   end
 
-  defp full_nickname(user) do
-    %{host: host} = URI.parse(user.ap_id)
-    "@" <> user.nickname <> "@" <> host
-  end
-
   defp status_title(%Activity{object: %Object{data: %{"name" => name}}}) when is_binary(name),
     do: name