/* This macro will be parsed as PHP code (see http://www.php.net)

The calculateshipping function is called every time a shipping calculation request is made by Shopify.

The function must return an array of available shipping options, otherwise no shipping options will be returned to your customers.
*/
function calculateshipping($DATA) {

	/* do not edit above this line */

	$_RATES = array();

	//calculate total weight
	$w = 0;
	$t = 0;
	foreach ($DATA['items'] as $i) {
		$w += $i['quantity']*$i['grams']/1000;
		$t += $i['quantity']*$i['price']/100;
	}
	$w = $w*2.20462; //in pounds

	$_SITEID = 'YOUR SITE ID';
	$_PASSWORD = 'YOUR PASSWORD';
	$_PAYMENTACCOUNTNUMBER = 'YOUR PAYMENT ACCOUNT NUMBER';

	$packages = array(
		array('weight'=>$w, 'length'=>5, 'width'=>5, 'height'=>5),
	);

	$foundDHL = false;
	$dhl = new DHLAPI($_SITEID,$_PASSWORD,$_PAYMENTACCOUNTNUMBER);
	$dhl->setOrigin($DATA['origin']['postal_code'],$DATA['origin']['country']);
	$dhl->setDestination($DATA['destination']['city'],$DATA['destination']['province'],$DATA['destination']['postal_code'],$DATA['destination']['country'],false);
	$r = $dhl->getRate($packages,'IMPERIAL',false);
	if ($r) {
		foreach ($r as $_r) {
			if ($_r['amount'] == 0) continue;
			$_r['name'] = trim(preg_replace('/nondoc/i','',$_r['name'])); //remove 'nondoc' from the names (optinal)
			if (preg_match('/medical|doc/i',$_r['name'])) continue; //filter out medical and doc rates (optional)

			$_RATES[] = array(
				"service_name" => $_r['name'],
				"service_code" => $_r['name'],
				"total_price" => $_r['amount']*100,
				"currency" => "USD",
			);

			$foundDHL = true;
		}
	}
	if (!$foundDHL) {
		//try again but send the order value for import taxes
		$r = $dhl->getRate($packages,'IMPERIAL',$t,'USD');
		if ($r) {
			foreach ($r as $_r) {
				if ($_r['amount'] == 0) continue;
				$_r['name'] = trim(preg_replace('/nondoc/i','',$_r['name'])); //remove 'nondoc' from the names (optinal)
				if (preg_match('/medical|doc/i',$_r['name'])) continue; //filter out medical and doc rates (optional)

				$_RATES[] = array(
					"service_name" => $_r['name'],
					"service_code" => $_r['name'],
					"total_price" => $_r['amount']*100,
					"currency" => "USD",
				);

				$foundDHL = true;
			}
		}
	}

	return $_RATES;

	/* do not edit below this line */

}