Subtotal based discount (from filter)

Apply a discount based on subtotal using a filter.

add_filter('advanced_woo_discount_rules_line_item_subtotal', function($line_subtotal, $cart_item, $tax_display_type){
	if(class_exists('Wdr\App\Controllers\Configuration')){
		$product = isset($cart_item['data']) ? $cart_item['data'] : '';
		$config = new Wdr\App\Controllers\Configuration();
		if(!empty($product)){
			$calculate_discount_from = $config->getConfig('calculate_discount_from', 'sale_price');
			if($calculate_discount_from == 'sale_price'){
				$price = $product->get_sale_price();
				if(empty($price)){
					$price = $product->get_price();
				}
			}else{
				$price = $product->get_regular_price();
			}
			$product_quantity = isset($cart_item['quantity']) ? $cart_item['quantity'] : 0;
			if(!empty($product_quantity)){
				$line_subtotal =  $price * $product_quantity;
			}
		}
		
	}
	return $line_subtotal;
}, 10, 3);