class Protobuf::Generators::ServiceGenerator

def compile
  run_once(:compile) do
    print_class(descriptor.name, :service) do
      print OptionGenerator.new(descriptor.options, current_indent).to_s if descriptor.options
      descriptor.method.each do |method_descriptor|
        print_method(method_descriptor)
      end
    end
  end
end

def print_method(method_descriptor)
  request_klass = modulize(method_descriptor.input_type)
  response_klass = modulize(method_descriptor.output_type)
  name = ENV.key?('PB_USE_RAW_RPC_NAMES') ? method_descriptor.name : method_descriptor.name.underscore
  options = {}
  if method_descriptor.options
    method_descriptor.options.each_field do |field_option|
      option_value = method_descriptor.options[field_option.name]
      next unless method_descriptor.options.field?(field_option.name)
      options[field_option.fully_qualified_name] = serialize_value(option_value)
    end
  end
  rpc = "rpc :#{name}, #{request_klass}, #{response_klass}"
  if options.empty?
    puts rpc
    return
  end
  puts rpc + " do"
  options.each do |option_name, value|
    indent { puts "set_option #{option_name.inspect}, #{value}" }
  end
  puts "end"
end