User: Add settings store to Info, AccountView

This is to provide a generic frontend settings storage mechanism for all kinds
of frontends.

lib/pleroma/user/info.ex

@@ -45,6 +45,7 @@ defmodule Pleroma.User.Info do
     field(:flavour, :string, default: nil)
     field(:mascot, :map, default: nil)
     field(:emoji, {:array, :map}, default: [])
+    field(:pleroma_settings_store, :map, default: %{})
 
     field(:notification_settings, :map,
       default: %{"remote" => true, "local" => true, "followers" => true, "follows" => true}

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

@@ -130,6 +130,7 @@ defp do_render("account.json", %{user: user} = opts) do
     |> maybe_put_role(user, opts[:for])
     |> maybe_put_settings(user, opts[:for], user_info)
     |> maybe_put_notification_settings(user, opts[:for])
+    |> maybe_put_settings_store(user, opts[:for], opts)
   end
 
   defp username_from_nickname(string) when is_binary(string) do
@@ -152,6 +153,15 @@ defp maybe_put_settings(
 
   defp maybe_put_settings(data, _, _, _), do: data
 
+  defp maybe_put_settings_store(data, %User{info: info, id: id}, %User{id: id}, %{
+         with_pleroma_settings: true
+       }) do
+    data
+    |> Kernel.put_in([:pleroma, :settings], info.pleroma_settings_store)
+  end
+
+  defp maybe_put_settings_store(data, _, _, _), do: data
+
   defp maybe_put_role(data, %User{info: %{show_role: true}} = user, _) do
     data
     |> Kernel.put_in([:pleroma, :is_admin], user.info.is_admin)

test/web/mastodon_api/account_view_test.exs

@@ -239,4 +239,19 @@ test "represent an embedded relationship" do
 
     assert expected == AccountView.render("account.json", %{user: user, for: other_user})
   end
+
+  test "returns the settings store if the requesting user is the represented user and it's requested specifically" do
+    user = insert(:user, %{info: %User.Info{pleroma_settings_store: %{fe: "test"}}})
+
+    result =
+      AccountView.render("account.json", %{user: user, for: user, with_pleroma_settings: true})
+
+    assert result.pleroma.settings == %{:fe => "test"}
+
+    result = AccountView.render("account.json", %{user: user, with_pleroma_settings: true})
+    assert result.pleroma[:settings] == nil
+
+    result = AccountView.render("account.json", %{user: user, for: user})
+    assert result.pleroma[:settings] == nil
+  end
 end