/* 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();

	//put your origin address for various groups here - vendor name must match what's entered in Shopify (case sensitive)
	$origins = array(
		'Vendor 1' => array(
			'city' => 'Brooklyn',
			'province' => 'NY',
			'zip' => '11211',
			'country' => 'US',
			'ups_key' => 'XYZ123',
			'ups_userid' => 'UPSuserID',
			'ups_password' => 'UPSPassword',
			'ups_account' => '123456',
			'usps_username' => 'USPSusername',
			'usps_password' => 'USPSPassword',
			'usps_accounttype' => 'C',
			'fedex_account' => '56789',
			'fedex_meter' => 'Meter#',
			'fedex_key' => 'XYZ456',
			'fedex_password' => 'FXPassword',
		),
		'Vendor 2' => array(
			'city' => 'Los Angeles',
			'province' => 'CA',
			'zip' => '90001',
			'country' => 'US',
			'ups_key' => 'XYZ123',
			'ups_userid' => 'UPSuserID',
			'ups_password' => 'UPSPassword',
			'ups_account' => '123456',
			'usps_username' => 'USPSusername',
			'usps_password' => 'USPSPassword',
			'usps_accounttype' => 'C',
			'fedex_account' => '56789',
			'fedex_meter' => 'Meter#',
			'fedex_key' => 'XYZ456',
			'fedex_password' => 'FXPassword',
		),
	);

	$wGrouped = array();
	foreach ($DATA['items'] as $i) {
		//this is where you put your own logic to assign items to groups
		$group = $i['vendor'];
		if (!isset($wGrouped[$group])) $wGrouped[$group] = 0;
		$wGrouped[$group] += $i['quantity']*round($i['grams']/1000*2.20462,2);
	}

    $isresidential = true;
    if ($DATA['destination']['company_name'] !== null && $DATA['destination']['company_name'] != '') $isresidential = false;

	$ratesGrouped = array();
	foreach ($wGrouped as $group => $w) {
		$packages[] = array('length'=>12,'width'=>8.75,'height'=>6,'weight'=>($w+0.4125));

		$ups = new UPSAPI($origins[$group]['ups_userid'],$origins[$group]['ups_password'],$origins[$group]['ups_key'],$origins[$group]['ups_account']);
		$ups->getTransitTime = true;
		$ups->setOrigin($origins[$group]['city'],$origins[$group]['province'],$origins[$group]['zip'],$origins[$group]['country']);
		$ups->setDestination($DATA['destination']['city'],$DATA['destination']['province'],$DATA['destination']['postal_code'],$DATA['destination']['country'],$isresidential);
		$r = $ups->getRate($packages,'IMPERIAL');
		if ($r) {
			foreach ($r as $_r) {
				$ratesGrouped[$group]['UPS'.$_r['code']] = $_r;
			}
		}

		$usps = new USPSAPI($origins[$group]['usps_username'],$origins[$group]['usps_password'],$origins[$group]['usps_accounttype']);
		$usps->setOrigin($origins[$group]['zip']);
		$usps->setDestination($DATA['destination']['province'],$DATA['destination']['postal_code'],$DATA['destination']['country'],$isresidential);
		$r = $usps->getRate($packages);
		if ($r) {
			foreach ($r as $_r) {
				if (preg_match('/media|library|hold|legal|gift|metered|postcard|letter|select|envelope|flat|regional|holiday|parcel/i',$_r['name'])) continue;
				$_r['name'] = preg_replace('/ \d-Day/i','',$_r['name']);
				$ratesGrouped[$group]['USPS'.$_r['code']] = $_r;
			}
		}

		$fedex = new FedExAPI($origins[$group]['fedex_account'],$origins[$group]['fedex_meter'],$origins[$group]['fedex_key'],$origins[$group]['fedex_password']);
		$fedex->setOrigin($origins[$group]['province'],$origins[$group]['zip'],$origins[$group]['country']);
		$fedex->setDestination($DATA['destination']['province'],$DATA['destination']['postal_code'],$DATA['destination']['country'],$isresidential);
		$r = $fedex->getRate($packages,'IMPERIAL');
		if ($r) {
			foreach ($r as $_r) {
				$ratesGrouped[$group]['FEDEX'.$_r['code']] = $_r;
			}
		}
	}

	//merge like rates together
	$commonServices = null;
	foreach ($ratesGrouped as $s => $rates) {
		$thisRate = $rates;
		if ($commonServices === null) $commonServices = array_keys($rates);
		$commonServices = array_intersect($commonServices,array_keys($rates));
	}
	if ($commonServices !== null) {
		$allRates = array();
		foreach ($commonServices as $service) {
			$allRates[$service] = $thisRate[$service]; //copy all other values
			$allRates[$service]['amount'] = 0; //reset price
			foreach ($ratesGrouped as $s => $rates) {
				$allRates[$service]['amount'] += $rates[$service]['amount'];
			}
		}
		foreach ($allRates as $_r) {
			$_RATES[] = array(
				"service_name" => $_r['name'],
				"service_code" => $_r['name'],
				"total_price" => ($_r['amount'])*100, //in cents
				"currency" => "USD",
			);
		}
	}

    return $_RATES;

	/* do not edit below this line */

}