rails--rails/activejob/lib/rails/generators/job/job_generator.rb

require 'rails/generators/named_base'

module Rails # :nodoc:
  module Generators # :nodoc:
    class JobGenerator < Rails::Generators::NamedBase # :nodoc:
      desc 'This generator creates an active job file at app/jobs'

      class_option :queue, type: :string, default: 'default', desc: 'The queue name for the generated job'

      check_class_collision suffix: 'Job'

      hook_for :test_framework

      def self.default_generator_root
        File.dirname(__FILE__)
      end

      def create_job_file
        template 'job.rb', File.join('app/jobs', class_path, "#{file_name}_job.rb")

        in_root do
          if self.behavior == :invoke && !File.exist?(application_job_file_name)
            template 'application_job.rb', application_job_file_name
          end
        end
      end

      private
        def application_job_file_name
           @application_job_file_name ||= if mountable_engine?
             "app/jobs/#{namespaced_path}/application_job.rb"
           else
             'app/jobs/application_job.rb'
           end
        end
    end
  end
end