use for article

ruby_notification_fac_patten.rb

class INotification
  def send
    raise NotImplementedError, "#{self.class} has not implemented method '#{__method__}'"
  end
  
  def body
    raise NotImplementedError, "#{self.class} has not implemented method '#{__method__}'"
  end
end

class EmailSender < INotification
  # override method
  def send
    call_email_api(body)
  end
  
  def body
    return '..... body .....'
  end
end

class PushNotiSender < INotification
  # override method
  def send
    call_firebase_api(body)
  end
  
  def body
    return '..... body .....'
  end
end

class SendNotiAdaptor
  def initialize(type: )
    @noti_type = type
  end
  
  def send
    @adapter = nil
    
    case @noti_type
    when 'email'
      @adapter = EmailSender.new
    when 'push'
      @adapter = PushNotiSender.new
    else
      raise ArgumentError, "not provided not type. please choose one of them"
    end
    
    client_caller(@adapter) if !@adapter.nil?
  end
  
  def client_caller(creator)
    creator.send
  end
end

SendNotiAdaptor.new(type: 'email').send
SendNotiAdaptor.new(type: 'push').send