#
# 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
#

require 'src/website'

class Liveleak < Website

  VALID_LIVELEAK_URL_REGEX = /^(http:\/\/)?(www\.)?liveleak\.com\/view\?i=.+$/

  def self.owns_url?(url)
    return url =~ VALID_LIVELEAK_URL_REGEX
  end


  def get_video_url()
    page_data = self.get_page_data(@url)
    embed_tag = parse_embed_tag(page_data)
    playlist_data = self.get_page_data(playlist_url(embed_tag))

    return parse_location_from_playlist(playlist_data)
  end


  protected;

  def parse_embed_tag(page_data)
    embed_tag_regex = /file_embed_tag%3D([[:alnum:]]+)%/
    matches = embed_tag_regex.match(page_data)

    if matches.nil? or matches.length < 2
      return StandardError.new("Couldn't parse the video's embed_tag.")
    end

    return matches[1]
  end


  def playlist_url(embed_tag)
    return "http://www.liveleak.com/playlist_new.php?file_embed_tag=#{embed_tag}"
  end


  def parse_location_from_playlist(xml_data)
    file_path_regex = /<location>(.*?)<\/location>/
    matches = file_path_regex.match(xml_data)

    if matches.nil?
      raise StandardError.new("Couldn't parse the <location> tag from the playlist XML file.")
    end

    return matches[1]
  end

end