module Devops
  module Model
    class StackTemplateEc2 < StackTemplateBase

      # In Amazon Cloudformation the template file must be stored on an Amazon S3 bucket.
      attr_accessor :template_url

      # types template_url: {type: String, empty: false}

      def initialize(attrs)
        self.template_url = attrs['template_url']
        super(attrs)
      end

      def to_hash_without_id
        super.merge(template_url: template_url)
      end

      def update_template_url
        self.template_url = generate_template_file_and_upload_to_storage(id, template_body)
      end

      class << self
        def create(attrs)
          model = super(attrs)
          model.update_template_url
          model
        end
      end

      private

        def generate_template_file_and_upload_to_storage(id, json)
          uniq_filename = "#{id}-#{SecureRandom.hex}.template"
          provider_instance.store_stack_template(uniq_filename, json)['url']
        end

    end
  end
end