Export: group accompanying period by person participating

src/Bundle/ChillPersonBundle/Export/Aggregator/AccompanyingCourseAggregators/PersonParticipatingAggregator.php

@@ -0,0 +1,78 @@
+<?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\Aggregator\AccompanyingCourseAggregators;
+
+use Chill\MainBundle\Export\AggregatorInterface;
+use Chill\PersonBundle\Export\Declarations;
+use Chill\PersonBundle\Export\Helper\LabelPersonHelper;
+use Doctrine\ORM\QueryBuilder;
+use Symfony\Component\Form\FormBuilderInterface;
+
+final readonly class PersonParticipatingAggregator implements AggregatorInterface
+{
+    private const KEY = 'acp_person_part_agg';
+
+    public function __construct(
+        private LabelPersonHelper $labelPersonHelper,
+    ) {
+    }
+
+    public function buildForm(FormBuilderInterface $builder)
+    {
+        // nothing to do here
+    }
+
+    public function getFormDefaultData(): array
+    {
+        return [];
+    }
+
+    public function getLabels($key, array $values, mixed $data)
+    {
+        return match ($key) {
+            self::KEY => $this->labelPersonHelper->getLabel($key, $values, 'export.aggregator.course.by-user.header'),
+            default => throw new \UnexpectedValueException('key not supported: '.$key),
+        };
+    }
+
+    public function getQueryKeys($data)
+    {
+        return [self::KEY];
+    }
+
+    public function getTitle()
+    {
+        return 'export.aggregator.course.by-user.title';
+    }
+
+    public function addRole(): ?string
+    {
+        return null;
+    }
+
+    public function alterQuery(QueryBuilder $qb, $data)
+    {
+        $k = self::KEY;
+
+        if (!in_array('acppart', $qb->getAllAliases(), true)) {
+            $qb->join('acp.participations', 'acppart');
+        }
+
+        $qb->addSelect("IDENTITY(acppart.person) AS {$k}")
+            ->addGroupBy($k);
+    }
+
+    public function applyOn()
+    {
+        return Declarations::ACP_TYPE;
+    }
+}