class Jets::Resource::Config::ConfigRule

def config_rule_logical_id
  "{namespace}_config_rule"
end

def config_rule_name
  app_class = @app_class.underscore.gsub(/_rule$/,'')
  ns = namespace
  ns = nil if ns == false # for compact
  [ns, "#{app_class}_#{@meth}"].compact.join('_').dasherize
end

def definition
  base = {
    config_rule_logical_id => {
      type: "AWS::Config::ConfigRule",
      properties: definition_properties
    }
  }
  # Explicitly set depends_on to help with CloudFormation random race condition.
  # Seems to be a new CloudFormation and AWS Config resource issue.
  if definition_properties[:source][:owner] == 'CUSTOM_LAMBDA'
    base[config_rule_logical_id][:depends_on] = "{namespace}Permission"
  end
  base
end

def definition_properties
  {
    config_rule_name: config_rule_name,
    source: {
      owner: "CUSTOM_LAMBDA",
      source_identifier: "!GetAtt {namespace}LambdaFunction.Arn",
      source_details: [
        {
          event_source: "aws.config",
          message_type: "ConfigurationItemChangeNotification"
        },
        {
          event_source: "aws.config",
          message_type: "OversizedConfigurationItemChangeNotification"
        }
      ]
    },
  }.deep_merge(@props)
end

def initialize(app_class, meth, props={})
  @app_class = app_class.to_s
  @meth = meth
  @props = props # associated_properties from dsl.rb
end

def namespace
  namespace = nil
  klass = @app_class.constantize
  while klass != Jets::Lambda::Functions
    namespace = klass.rule_namespace
    break if namespace or namespace == false
    klass = klass.superclass
  end
  if namespace.nil?
    Jets.config.project_namespace
  else
    namespace
  end
end