module PostSets
  class Base
    attr_accessor :page, :before_id, :count, :posts
  
    def initialize(options = {})
      @page = options[:page].to_i
      @before_id = options[:before_id]
      load_posts
    end
    
    def has_wiki?
      false
    end
  
    def use_sequential_paginator?
      !use_numbered_paginator?
    end
  
    def use_numbered_paginator?
      before_id.nil?
    end
  
    def load_posts
      raise NotImplementedError
    end
  
    def to_xml
      posts.to_xml
    end
  
    def to_json
      posts.to_json
    end
  
    def presenter
      @presnter ||= PostSetPresenter.new(self)
    end
  end
end