from util.config.validators import BaseValidator, ConfigValidationException

class AppTokenAuthValidator(BaseValidator):
  name = "apptoken-auth"

  @classmethod
  def validate(cls, config, user, user_password):
    if config.get('AUTHENTICATION_TYPE', 'Database') != 'AppToken':
      return

    # Ensure that app tokens are enabled, as they are required.
    if not config.get('FEATURE_APP_SPECIFIC_TOKENS', False):
      msg = 'Application token support must be enabled to use External Application Token auth'
      raise ConfigValidationException(msg)

    # Ensure that direct login is disabled.
    if config.get('FEATURE_DIRECT_LOGIN', True):
      msg = 'Direct login must be disabled to use External Application Token auth'
      raise ConfigValidationException(msg)