#
# Copyright Michael Orlitzky
#
# http://michael.orlitzky.com/
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# http://www.fsf.org/licensing/licenses/gpl.html
#

# This class keeps track of all its subclasses
# We use this to loop through every "website" in an
# attempt to determine to which site a URL belongs.
class Website
  def self.inherited(subclass)
    if superclass.respond_to? :inherited
      superclass.inherited(subclass)
    end

    # Every time we're subclassed, add the new
    # subclass to our list of subclasses.
    @subclasses ||= []
    @subclasses << subclass
  end

  def self.subclasses
    @subclasses
  end

  # This should be overridden in any class that wants
  # to claim ownership of a URL.
  def self.owns_url?(url)
    return false
  end

  # Same here. We want to default to nil unless overridden.
  def get_video_url(url)
    return nil
  end
end