#
# 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 'whatever-dl/website'

class Ehow < Website

  VALID_EHOW_URL_REGEX = /^(http:\/\/)?(www.)?ehow\.com\/[a-z0-9\-_\.]+$/i

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


  def get_video_url()
    page_data = get_page_data(@url)
    filepath = parse_video_url(page_data)
    puts "FILEPATH: #{filepath}"
    return filepath
  end


  protected;

  def parse_video_url(page_data)
    # There's more than one JSON 'id' parameter floating around; we
    # only want the one that points to the video URL.
    #
    # In fact, there's more than one 'id' parameter pointing to a
    # video URL, but it looks like the highest-quality clips are
    # listed first so the first match should give us that.
    #
    video_url_regex = /id:[[:space:]]?'(http:\/\/[^']+)'/i
    matches = video_url_regex.match(page_data)

    if matches.nil? or (matches.length < 2)
      raise StandardError.new("Couldn't parse the 'id' JSON parameter.")
    else
      return matches[1]
    end
  end

end