WWDC 2015 Video Downloader

wwdc2015.rb

require 'open-uri'
require 'nokogiri'
require 'yaml'
require 'mail'

WWDC_MAIN_URL="https://developer.apple.com/videos/wwdc/2015/"

def video_urls
  doc = Nokogiri::HTML(open(WWDC_MAIN_URL))

  videos = Array.new

  doc.xpath("//ul[contains(@class, 'list_videos')]/li/a").each do |video_url|
    url = video_url.xpath("@href").to_s
    videos << url
  end

  videos
end

def download_video_url(url)
  full_url = WWDC_MAIN_URL + url
  doc = Nokogiri::HTML(open(full_url))
  
  doc.xpath("//section[@class = 'col-25']/ul/li/a[text() = 'HD']/@href").each do |download_url|
    output = download_url.to_s.split("/").last.split("?").first
    system "wget #{download_url.to_s} -nc -O #{output}"
  end
end

video_urls.each do |url|
  download_video_url(url)
end