require "resource_support/aws/aws_plural_resource_mixin"
require "resource_support/aws/aws_backend_base"
require "aws-sdk-cloudtrail"

class AwsCloudTrailTrails < Inspec.resource(1)
  name "aws_cloudtrail_trails"
  desc "Verifies settings for AWS CloudTrail Trails in bulk"
  example <<~EXAMPLE
    describe aws_cloudtrail_trails do
      it { should exist }
    end
  EXAMPLE
  supports platform: "aws"

  include AwsPluralResourceMixin

  def validate_params(resource_params)
    unless resource_params.empty?
      raise ArgumentError, "aws_cloudtrail_trails does not accept resource parameters."
    end

    resource_params
  end

  # Underlying FilterTable implementation.
  filter = FilterTable.create
  filter.register_custom_matcher(:exists?) { |x| !x.entries.empty? }
  filter.register_column(:trail_arns, field: :trail_arn)
  filter.register_column(:names, field: :name)
  filter.install_filter_methods_on_resource(self, :table)

  def to_s
    "CloudTrail Trails"
  end

  def fetch_from_api
    backend = BackendFactory.create(inspec_runner)
    @table = backend.describe_trails({}).to_h[:trail_list]
  end

  class Backend
    class AwsClientApi < AwsBackendBase
      AwsCloudTrailTrails::BackendFactory.set_default_backend(self)
      self.aws_client_class = Aws::CloudTrail::Client

      def describe_trails(query)
        aws_service_client.describe_trails(query)
      end
    end
  end
end