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#!/usr/bin/env php
<?php

if (!isset($argv[1])) {
  echo 'Magento extension key is required. Example usage: php '. $argv[0]. ' <Magento Connect 2.0 extension key>'. PHP_EOL;
  exit(-1);
}

$mage_module_key = $argv[1];
$mage_module_name = basename($mage_module_key);

$releases_url = $mage_module_key. '/releases.xml';
$releases = simplexml_load_file($releases_url);

$versions = array();
foreach ($releases as $release) {
  $versions[] = (string) $release->v;
}

asort($versions);
$latest_version = array_pop($versions);

$download_url = sprintf('%s/%s/%s-%s.tgz', $mage_module_key, $latest_version, $mage_module_name, $latest_version);
exec('wget '. $download_url);