railscasts.rb

require 'net/http'

require 'pry'

class RailscastsScanner
end
uri = URI("http://railscasts.com/episodes/407")
Net::HTTP.start uri.host, uri.port do |http|
  resp = http.head uri.path

  case resp.code
  when "404"
    raise "URL doesn't exist"
  when "302"
    url = resp['location']
    @name = File.basename url
    @name = "0#{@name}" if @name =~ /^\d{2}-.*/
  else
    raise "Unknown HTTP code #{resp.code}"
  end
end

sub_uid="41TjtXC14dnMq0aFyllyKw"

uri = URI("http://media.railscasts.com")
pro_path = "/assets/subscriptions/#{sub_uid}/videos/#{@name}.webm"
free_path = "/assets/episodes/videos/#{@name}.webm"

Net::HTTP.start uri.host, uri.port do |http|
  resp = http.head pro_path
  if resp.code == "200"
    puts "pro episode"
    exit
  end

  resp = http.head free_path
  if resp.code == "200"
    puts "free episode"
  end

  puts resp.code
end