exports: add a new intensity aggregator

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

@@ -0,0 +1,96 @@
+<?php
+
+namespace Chill\PersonBundle\Export\Aggregator\AccompanyingCourseAggregators;
+
+use Chill\MainBundle\Export\AggregatorInterface;
+use Chill\PersonBundle\Export\Declarations;
+use Doctrine\ORM\QueryBuilder;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Contracts\Translation\TranslatorInterface;
+
+class IntensityAggregator implements AggregatorInterface
+{
+    private TranslatorInterface $translator;
+
+    public function __construct(
+        TranslatorInterface $translator
+    ) {
+        $this->translator = $translator;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getLabels($key, array $values, $data)
+    {
+        return function ($value): string {
+            if ($value === '_header') {
+                return 'Intensity';
+            }
+            switch ($value) {
+                case 'occasional':
+                    return $this->translator->trans('is occasional');
+                case 'regular':
+                    return $this->translator->trans('is regular');
+                default:
+                    throw new LogicException(sprintf('The value %s is not valid', $value));
+            }
+        };
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getQueryKeys($data): array
+    {
+        return ['intensity_aggregator'];
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function buildForm(FormBuilderInterface $builder)
+    {
+        // no form
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function getTitle(): string
+    {
+        return 'Group by intensity';
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function addRole()
+    {
+        return null;
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function alterQuery(QueryBuilder $qb, $data)
+    {
+        $qb->addSelect('acp.intensity AS intensity_aggregator');
+
+        $groupBy = $qb->getDQLPart('groupBy');
+
+        if (!empty($groupBy)) {
+            $qb->addGroupBy('intensity_aggregator');
+        } else {
+            $qb->groupBy('intensity_aggregator');
+        }
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function applyOn(): string
+    {
+        return Declarations::ACP_TYPE;
+    }
+}