Feature: [activity][list] Fix list for activities and refactor list with an helper

src/Bundle/ChillPersonBundle/Export/Helper/LabelPersonHelper.php

@@ -0,0 +1,69 @@
+<?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\PersonBundle\Export\Helper;
+
+use Chill\PersonBundle\Repository\PersonRepository;
+use Chill\PersonBundle\Templating\Entity\PersonRenderInterface;
+use function count;
+use const SORT_NUMERIC;
+
+class LabelPersonHelper
+{
+    private PersonRenderInterface $personRender;
+
+    private PersonRepository $personRepository;
+
+    public function __construct(PersonRepository $personRepository, PersonRenderInterface $personRender)
+    {
+        $this->personRepository = $personRepository;
+        $this->personRender = $personRender;
+    }
+
+    public function getLabelMulti(string $key, array $values, string $header): callable
+    {
+        return function ($value) use ($header) {
+            if ('_header' === $value) {
+                return $header;
+            }
+
+            if (null === $value) {
+                return '';
+            }
+
+            $decoded = json_decode($value);
+
+            if (0 === count($decoded)) {
+                return '';
+            }
+
+            return
+                implode(
+                    '|',
+                    array_map(
+                        function (int $personId) {
+                            $person = $this->personRepository->find($personId);
+
+                            if (null === $person) {
+                                return '';
+                            }
+
+                            return $this->personRender->renderString($person, []);
+                        },
+                        array_unique(
+                            array_filter($decoded, static fn (?int $id) => null !== $id),
+                            SORT_NUMERIC
+                        )
+                    )
+                );
+        };
+    }
+}