Add ThirdPartyHasEmail validator

Introduce a new validator that ensures a third party has an email address, including the corresponding translation for error messaging and unit tests to verify its functionality.

src/Bundle/ChillThirdPartyBundle/Validator/ThirdPartyHasEmail.php

@@ -0,0 +1,31 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\ThirdPartyBundle\Validator;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * Add a constraint to check that the thirdparty has an email address.
+ */
+class ThirdPartyHasEmail extends Constraint
+{
+    public string $message = 'thirdParty.thirdParty_has_no_email';
+    public string $code = 'f2da71f8-818c-11ef-9f6a-3ba3597ab60b';
+
+    /**
+     * @return array<string>|string
+     */
+    public function getTargets(): array|string
+    {
+        return [self::PROPERTY_CONSTRAINT];
+    }
+}

src/Bundle/ChillThirdPartyBundle/Validator/ThirdPartyHasEmailValidator.php

@@ -0,0 +1,45 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\ThirdPartyBundle\Validator;
+
+use Chill\ThirdPartyBundle\Entity\ThirdParty;
+use Chill\ThirdPartyBundle\Templating\Entity\ThirdPartyRender;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+
+final class ThirdPartyHasEmailValidator extends ConstraintValidator
+{
+    public function __construct(private readonly ThirdPartyRender $thirdPartyRender) {}
+
+    public function validate($value, Constraint $constraint): void
+    {
+        if (!$constraint instanceof ThirdPartyHasEmail) {
+            throw new UnexpectedTypeException($constraint, ThirdPartyHasEmail::class);
+        }
+
+        if (null === $value) {
+            return;
+        }
+
+        if (!$value instanceof ThirdParty) {
+            throw new UnexpectedTypeException($value, ThirdParty::class);
+        }
+
+        if (null === $value->getEmail() || '' === $value->getEmail()) {
+            $this->context->buildViolation($constraint->message)
+                ->setParameter('{{ thirdParty }}', $this->thirdPartyRender->renderString($value, []))
+                ->setCode($constraint->code)
+                ->addViolation();
+        }
+    }
+}