module Line
  module Bot
    module MessageBuilder
      class Message::Template < Message
        attr_accessor :alt_text, :template

        def initialize(alt_text: nil, template: nil)
          super 'template' do
            @alt_text = alt_text
            @template = template
            yield self if block_given?
          end
        end

        def self.required
          {
            'type' => String,
            'alt_text' => String,
            'template' => Template
          }
        end

        def to_h
          result = super
          result['template'] = template.to_h
          result
        end
      end
    end
  end
end