Complete market overview card editing

modules/erp/kontakte/service.php

@@ -188,6 +188,38 @@ function get_contact_options(PDO $pdo): array
     );
 }
 
+function update_contact_details(PDO $pdo, int $contactId, array $input): array
+{
+    if ($contactId <= 0) {
+        throw new InvalidArgumentException('contact_person_id muss positiv sein.');
+    }
+
+    $sets = [];
+    $params = [':id' => $contactId];
+    foreach (['email', 'phone'] as $field) {
+        if (array_key_exists($field, $input)) {
+            $sets[] = $field . ' = :' . $field;
+            $value = trim((string) ($input[$field] ?? ''));
+            $params[':' . $field] = $value !== '' ? $value : null;
+        }
+    }
+    if ($sets === []) {
+        throw new InvalidArgumentException('Keine änderbaren Kontaktdaten übergeben.');
+    }
+
+    $sets[] = 'updated_at = NOW()';
+    $stmt = $pdo->prepare(
+        'UPDATE contact SET ' . implode(', ', $sets) . ' WHERE id = :id
+         RETURNING id, party_id, first_name, last_name, email, phone, position_title'
+    );
+    $stmt->execute($params);
+    $contact = $stmt->fetch();
+    if (!is_array($contact)) {
+        throw new RuntimeException('Kontaktperson nicht gefunden.');
+    }
+    return $contact;
+}
+
 function create_manufacturer(PDO $pdo, string $name, ?string $email = null, ?string $phone = null): array
 {
     $name = trim($name);