discourse/lib/site_settings/yaml_loader.rb

module SiteSettings; end

class SiteSettings::YamlLoader
  def initialize(file)
    @file = file
  end

  def load
    yaml = YAML.load_file(@file)
    yaml.each_key do |category|
      yaml[category].each do |setting_name, hash|
        if hash.is_a?(Hash)
          # Get default value for the site setting:
          value = hash.delete('default')
          if value.is_a?(Hash)
            raise Discourse::Deprecation, "Site setting per env is no longer supported. Error setting: #{setting_name}"
          end

          if hash['hidden']&.is_a?(Hash)
            raise Discourse::Deprecation, "Hidden site setting per env is no longer supported. Error setting: #{setting_name}"
          end

          yield category, setting_name, value, hash.deep_symbolize_keys!
        else
          # Simplest case. site_setting_name: 'default value'
          yield category, setting_name, hash, {}
        end
      end
    end
  end
end