fizzy/app/models/notification/default_payload.rb

class Notification::DefaultPayload
  attr_reader :notification

  delegate :card, to: :notification

  def initialize(notification)
    @notification = notification
  end

  def to_h
    { title: title, body: body, url: url }
  end

  private
    def title
      "New notification"
    end

    def body
      "You have a new notification"
    end

    def url
      notifications_url
    end

    def card_url(card)
      Rails.application.routes.url_helpers.card_url(card, **url_options)
    end

    def notifications_url
      Rails.application.routes.url_helpers.notifications_url(**url_options)
    end

    def url_options
      base_options = Rails.application.routes.default_url_options.presence ||
        Rails.application.config.action_mailer.default_url_options ||
        {}
      base_options.merge(script_name: notification.account.slug)
    end
end