Format code, expose instance configuration related to birth dates

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

config/description.exs

@@ -966,7 +966,8 @@
       %{
         key: :birth_date_min_age,
         type: :integer,
-        description: "Min age for users to create account. Only makes sense if birth date is required."
+        description:
+          "Min age for users to create account. Only makes sense if birth date is required."
       }
     ]
   },

lib/pleroma/user.ex

@@ -157,7 +157,6 @@ defmodule Pleroma.User do
     field(:birth_date, :date)
     field(:hide_birth_date, :boolean, default: false)
 
-
     embeds_one(
       :notification_settings,
       Pleroma.User.NotificationSetting,

lib/pleroma/web/api_spec/operations/account_operation.ex

@@ -549,7 +549,7 @@ defp create_request do
           nullable: true,
           description: "User's birth date",
           format: :date
-        },
+        }
       },
       example: %{
         "username" => "cofe",

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

@@ -47,7 +47,7 @@ defmodule Pleroma.Web.ApiSpec.Schemas.Account do
             description: "whether the user allows automatically follow moved following accounts"
           },
           background_image: %Schema{type: :string, nullable: true, format: :uri},
-          birth_date: %Schema{type: :string, format: :date},
+          birth_date: %Schema{type: :string, nullable: true, format: :date},
           chat_token: %Schema{type: :string},
           is_confirmed: %Schema{
             type: :boolean,

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

@@ -46,7 +46,9 @@ def render("show.json", _) do
           federation: federation(),
           fields_limits: fields_limits(),
           post_formats: Config.get([:instance, :allowed_post_formats]),
-          privileged_staff: Config.get([:instance, :privileged_staff])
+          privileged_staff: Config.get([:instance, :privileged_staff]),
+          birth_date_required: Config.get([:instance, :birth_date_required]),
+          birth_date_min_age: Config.get([:instance, :birth_date_min_age])
         },
         stats: %{mau: Pleroma.User.active_user_count()},
         vapid_public_key: Keyword.get(Pleroma.Web.Push.vapid_config(), :public_key)

test/pleroma/web/mastodon_api/views/account_view_test.exs

@@ -79,6 +79,7 @@ test "Represent a user account" do
         ap_id: user.ap_id,
         also_known_as: ["https://shitposter.zone/users/shp"],
         background_image: "https://example.com/images/asuka_hospital.png",
+        birth_date: nil,
         favicon: nil,
         is_confirmed: true,
         tags: [],
@@ -181,6 +182,7 @@ test "Represent a Service(bot) account" do
         ap_id: user.ap_id,
         also_known_as: [],
         background_image: nil,
+        birth_date: nil,
         favicon: nil,
         is_confirmed: true,
         tags: [],