WIP: Implement profile validation

src/Validator/Constraints/BankAccount.php

@@ -0,0 +1,23 @@
+<?php
+
+namespace App\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+#[\Attribute]
+class BankAccount extends Constraint
+{
+    public string $message = 'Die Bankverbindung ist unvollständig';
+
+    public function __construct(string $message = null, array $groups = null, $payload = null)
+    {
+        parent::__construct([], $groups, $payload);
+
+        $this->message = $message ?? $this->message;
+    }
+
+    public function getTargets(): string
+    {
+        return Constraint::CLASS_CONSTRAINT;
+    }
+}

src/Validator/Constraints/BankAccountValidator.php

@@ -0,0 +1,36 @@
+<?php
+
+namespace App\Validator\Constraints;
+
+use App\Entity\Embeddable\BankAccount as BankAccountEntity;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+class BankAccountValidator extends ConstraintValidator
+{
+    public function validate(mixed $value, Constraint $constraint): void
+    {
+        if (!$value instanceof BankAccountEntity) {
+            throw new UnexpectedTypeException($value, BankAccountEntity::class);
+        }
+
+        if (!$constraint instanceof BankAccount) {
+            throw new UnexpectedTypeException($constraint, BankAccount::class);
+        }
+
+        $isIncomplete = null === $value->getIban()
+            || null === $value->getBic()
+            || null === $value->getBank()
+            || null === $value->getHolder()
+        ;
+
+        if ($isIncomplete) {
+            $this->context
+                ->buildViolation($constraint->message)
+                ->atPath('iban')
+                ->addViolation()
+            ;
+        }
+    }
+}