300, //7 days * 24 hours * 60 minutes * 60 seconds[7 * 24 * 60 * 60,]
    'display' => __( '5 Minutely', 'text-domain' )
  );
  return $schedules;
}
add_action( 'call_mustek_stock_updater', 'call_mustek_stock_updater_callback' );
function call_mustek_stock_updater_callback(){
	$url     = "https://api.mustek.co.za/Customer/ItemsStock.ashx?CustomerToken=8C6381DB-D817-A319";
	$csvData = file_get_contents($url);
	$lines   = explode(PHP_EOL, $csvData);
	$array   = array();
	foreach ($lines as $line) {
	    $array[] = str_getcsv($line);
	}
	$i = 0; 
	foreach ($array as $items) {
		if($i != 0){
		/*	print_r($items);*/
			$product = get_mustek_product_by_sku( $items[0] );
			if(is_object($product)){
				$quantity = $product->get_stock_quantity('view');
				$newstock = $items[2];
				if((int) $quantity != (int) $newstock )
				{
					wc_update_product_stock($product, $newstock);
				}
			}
		}
		$i++; 
	}
}
/*Helper Function to get Product by SKU*/
function get_mustek_product_by_sku( $sku ) {
  global $wpdb;
  $product_id = $wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta WHERE meta_key='wpcf-mustek_sku' AND meta_value='%s' LIMIT 1", $sku ) );
  if ( $product_id ) return wc_get_product( $product_id );
  return null;
}