INSERT INTO app_settings(key, value_json, value_type, title, description, category)
VALUES
  ('vk_poster_app_id', '""'::jsonb, 'str', 'VK OAuth app id', 'VK application id used for user OAuth code flow.', 'VK Poster'),
  ('vk_poster_client_secret', '""'::jsonb, 'secret', 'VK OAuth client secret', 'Protected key from VK application settings. Used server-side to exchange code for user access token.', 'VK Poster')
ON CONFLICT (key) DO NOTHING;