class UsernameCheckerService def check_username(username, email) if username && username.length > 0 validator = UsernameValidator.new(username) if !validator.valid_format? { errors: validator.errors } else check_username_availability(username, email) end end end def check_username_availability(username, email) if User.username_available?(username) { available: true, is_developer: is_developer?(email) } else { available: false, suggestion: UserNameSuggester.suggest(username) } end end def is_developer?(value) Rails.configuration.respond_to?(:developer_emails) && Rails.configuration.developer_emails.include?(value) end def self.is_developer?(email) UsernameCheckerService.new.is_developer?(email) end end