class ArtistUrl < ActiveRecord::Base
  before_save :normalize
  validates_presence_of :url
  belongs_to :artist

  def self.normalize(url)
    if url.nil?
      nil
    else
      url = url.gsub(/^https:\/\//, "http://")
      url = url.gsub(/^http:\/\/blog\d+\.fc2/, "http://blog.fc2")
      url = url.gsub(/^http:\/\/blog-imgs-\d+\.fc2/, "http://blog.fc2")
      url = url.gsub(/^http:\/\/blog-imgs-\d+-\w+\.fc2/, "http://blog.fc2")
      url = url.gsub(/^http:\/\/img\d+\.pixiv\.net/, "http://img.pixiv.net")
      url = url.gsub(/^http:\/\/i\d+\.pixiv\.net\/img\d+/, "http://img.pixiv.net")
      url = url.gsub(/\/+\Z/, "")
      url + "/"
    end
  end

  def self.normalize_for_search(url)
    if url =~ /\.\w+\Z/ && url =~ /\w\/\w/
      url = File.dirname(url)
    end

    url = url.gsub(/^https:\/\//, "http://")
    url = url.gsub(/^http:\/\/blog\d+\.fc2/, "http://blog*.fc2")
    url = url.gsub(/^http:\/\/blog-imgs-\d+\.fc2/, "http://blog*.fc2")
    url = url.gsub(/^http:\/\/blog-imgs-\d+-\w+\.fc2/, "http://blog*.fc2")
    url = url.gsub(/^http:\/\/img\d+\.pixiv\.net/, "http://img*.pixiv.net")
    url = url.gsub(/^http:\/\/i\d+\.pixiv\.net\/img\d+/, "http://*.pixiv.net/img*")
  end

  def normalize
    self.normalized_url = self.class.normalize(url)
  end

  def to_s
    url
  end
end