<?php
ini_set('memory_limit', '4096M');
ini_set('max_execution_time', 0);
include('www/config/config.inc.php');

$date_current = new DateTime('2015-04-21');
$date_end = new DateTime('2015-04-29');

$export_total = fopen('export_avril.csv', 'w');
$headers = array(
	'Id cart',
	'Name',
	'Total',
	'Carrier',
	'Date'
);

fputcsv($export_total, $headers, ';');

while ($date_current <= $date_end) {
	$file = fopen('tmp/export-'.$date_current->format('Y-m-d').'.csv', 'w');
	$batch = 50;

	$i = 0;
	$data = '';
	foreach (  Db::getInstance()->executeS('
			SELECT CONCAT(c.lastname," ",  c.firstname) as name, ca.name carrier, a.id_cart, a.id_customer, a.id_currency, a.date_add
			FROM ps_cart a
			LEFT JOIN `ps_customer` c ON (c.`id_customer` = a.`id_customer`)
			LEFT JOIN `ps_carrier` ca ON (ca.`id_carrier` = a.`id_carrier`)
			WHERE a.date_add >= "'.$date_current->format('Y-m-d').' 00:00:00"
			AND a.date_add <= "'.$date_current->format('Y-m-d').' 23:59:59"
		') as $key =>  $cart) {

		$cartObj = new Cart($cart['id_cart']);
		$data.= $cart['id_cart'].';'.$cart['name'].';'.$cartObj->getOrderTotal().';'.$cart['carrier'].';'.$cart['date_add']."\n";
		$i++;
		if($i % $batch == 0) {
			writeFile($file, $data);
			$data = '';
			$i = 0;
		}
	}
	writeFile($file, $data);

	fwrite($export_total, file_get_contents('tmp/export-'.$date_current->format('Y-m-d').'.csv') );
	fclose($file);
	unlink('tmp/export-'.$date_current->format('Y-m-d').'.csv');
	$date_current->add(new DateInterval('P1D'));
}

fclose($export_total);

function writeFile($file, $data) {
	fwrite($file, $data);
}