FEP-2c59, add "webfinger" to user actor

Signed-off-by: marcin mikołajczak <git@mkljczk.pl>

changelog.d/fep-2c59.add

@@ -0,0 +1 @@
+Implement FEP-2c59, add "webfinger" to user actor

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -67,8 +67,13 @@ def render("service.json", %{user: user}) do
   def render("user.json", %{user: %User{nickname: nil} = user}),
     do: render("service.json", %{user: user})
 
-  def render("user.json", %{user: %User{nickname: "internal." <> _} = user}),
-    do: render("service.json", %{user: user}) |> Map.put("preferredUsername", user.nickname)
+  def render("user.json", %{user: %User{nickname: "internal." <> _} = user}) do
+    render("service.json", %{user: user})
+    |> Map.merge(%{
+      "preferredUsername" => user.nickname,
+      "webfinger" => "acct:#{User.full_nickname(user)}"
+    })
+  end
 
   def render("user.json", %{user: user}) do
     {:ok, _, public_key} = Keys.keys_from_pem(user.keys)
@@ -121,7 +126,8 @@ def render("user.json", %{user: user}) do
       "discoverable" => user.is_discoverable,
       "capabilities" => capabilities,
       "alsoKnownAs" => user.also_known_as,
-      "vcard:bday" => birthday
+      "vcard:bday" => birthday,
+      "webfinger" => "acct:#{User.full_nickname(user)}"
     }
     |> Map.merge(maybe_make_image(&User.avatar_url/2, "icon", user))
     |> Map.merge(maybe_make_image(&User.banner_url/2, "image", user))

priv/static/schemas/litepub-0.1.jsonld

@@ -2,6 +2,7 @@
     "@context": [
         "https://www.w3.org/ns/activitystreams",
         "https://w3id.org/security/v1",
+        "https://purl.archive.org/socialweb/webfinger",
         {
             "Emoji": "toot:Emoji",
             "Hashtag": "as:Hashtag",

test/pleroma/web/activity_pub/views/user_view_test.exs

@@ -91,6 +91,13 @@ test "renders AKAs" do
     assert %{"alsoKnownAs" => ^akas} = UserView.render("user.json", %{user: user})
   end
 
+  test "renders full nickname" do
+    clear_config([Pleroma.Web.WebFinger, :domain], "plemora.dev")
+
+    user = insert(:user, nickname: "user")
+    assert %{"webfinger" => "acct:user@plemora.dev"} = UserView.render("user.json", %{user: user})
+  end
+
   describe "endpoints" do
     test "local users have a usable endpoints structure" do
       user = insert(:user)