#!/usr/bin/env ruby

require "json"
require "crack"

myXML  = Crack::XML.parse(File.read( ARGV[0] ))
myJSON = myXML.to_json

vAPP = JSON.parse(myJSON)

def print_ovf_info(m)
  m["ovf:Item"].each do |item|
    if item["rasd:Description"] == "Hard disk"
      puts item["rasd:ElementName"]
      puts item["rasd:HostResource"]["vcloud:capacity"]
    end
    if item["rasd:Description"] == "Number of Virtual CPUs"
      puts item["rasd:ElementName"]
    end
    if item["rasd:Description"] == "Memory Size"
      puts item["rasd:ElementName"]
    end
  end
end


vAPP["VApp"]["Children"]["Vm"].each do |machine|
  if machine.is_a? Array
    machine.each do |m|
      if m.is_a? Hash
        if !m.keys.grep("ovf:System").empty?
          puts "System name = " + m["ovf:System"]["vssd:VirtualSystemIdentifier"]
          print_ovf_info(m)
          puts ","
        end
      end
    end
  else
    puts "System name = " + machine["GuestCustomizationSection"]["ComputerName"] if
    print_ovf_info(machine["ovf:VirtualHardwareSection"])
    puts ","
  end
end