simple backend address validation

backend/app/plugins/wiaas/includes/class-wiaas-user.php

@@ -40,6 +40,9 @@ class Wiaas_User {
 
 		if (isset($request['deliveryAddress'])){
 			$received_address = json_decode($request['deliveryAddress']);
+			if (!self::validate_address($received_address)){
+				return false;
+			}
 			$profile_addresses = get_user_meta($customer->ID, 'profile_addresses', true) ?: [];
 			
 			if ($received_address->id){
@@ -84,6 +87,9 @@ class Wiaas_User {
 
 		if (isset($request['billingAddress'])){
 			$received_address = json_decode($request['billingAddress']);
+			if (!self::validate_address($received_address)){
+				return false;
+			}
 			$billing_addresses = get_user_meta($customer->ID, 'billing_addresses', true) ?: [];
 			
 			if ($received_address->id){
@@ -221,6 +227,25 @@ class Wiaas_User {
 
 	}
 
+	/**
+	 * Check if address is valid
+	 *
+	 * @param $address
+	 *
+	 * @return mixed
+	 */
+	private static function validate_address($address){
+		if (empty($address->city)){
+			return false;
+		}
+
+		if (empty($address->detailedAddress)){
+			return false;
+		}
+
+		return is_numeric($address->zipCode);
+	}
+
 
 }