Edited to download ios screencast file too. - Downloads all DAS screencasts, forked from eMxyzptlk

das_download.rb

#! /usr/bin/env ruby
# usage: 
# $ das_download.rb email password [download_directory]
 
require 'mechanize'
# gem 'mechanize-progressbar'
 
email    = ARGV[0] or raise('Please provide the email address for your account')
password = ARGV[1] or raise('Please provide the password for your account')
path     = (ARGV[2] || './').gsub /\//,''
 
download = lambda do |url, file|
  agent = Mechanize.new
  agent.get 'https://www.destroyallsoftware.com/screencasts/users/sign_in'
  form  = agent.page.forms.first
  form['user[email]']    = email
  form['user[password]'] = password
  form.submit
  agent.pluggable_parser.default = Mechanize::Download
  agent.get(url).save(file)
end
 
agent = Mechanize.new
agent.get 'https://www.destroyallsoftware.com/screencasts/catalog'
screencasts = agent.page.search('li.screencast').reverse
 
screencasts.each_with_index do |screencast, index|
  title = screencast.search('a').first.text
  to_go = "#{screencasts.size - index} to go"

  2.times do |file_ind|
    css_selector = (file_ind == 0) ? ".download_link > a:first-child" : ".download_link > a:nth-child(2)"
    file_postfix = (file_ind == 0) ? "" : "_ios"
    
    url = screencast.search(css_selector).first['href']
    file = "#{path}/#{"%04d" % (index + 1)}-#{title.gsub(/\.|:|,/, '').gsub(/\/|\s/, '-').downcase}#{file_postfix}.mov"
    if File.exists? file
      puts "Skipping #{title} #{[file]} - #{to_go}"
    else
      puts "Downloading #{title} #{[file]} - #{to_go}"
      download[url, file]
    end
  end
end