cancel reason aggregator + start of monthYearAggregator

src/Bundle/ChillCalendarBundle/Export/Aggregator/CancelReasonAggregator.php

@@ -0,0 +1,80 @@
+<?php
+
+namespace Chill\CalendarBundle\Export\Aggregator;
+
+use Chill\CalendarBundle\Export\Declarations;
+use Chill\CalendarBundle\Repository\CancelReasonRepository;
+use Chill\MainBundle\Export\AggregatorInterface;
+use Chill\MainBundle\Templating\TranslatableStringHelper;
+use Doctrine\ORM\QueryBuilder;
+use Symfony\Component\Form\FormBuilderInterface;
+
+class CancelReasonAggregator implements AggregatorInterface
+{
+    private CancelReasonRepository $cancelReasonRepository;
+
+    private TranslatableStringHelper $translatableStringHelper;
+
+    public function __construct(
+        CancelReasonRepository $cancelReasonRepository,
+        TranslatableStringHelper $translatableStringHelper
+    ) {
+        $this->cancelReasonRepository = $cancelReasonRepository;
+        $this->translatableStringHelper = $translatableStringHelper;
+    }
+
+    public function getLabels($key, array $values, $data): \Closure
+    {
+        return function($value): string {
+            if ($value === '_header') {
+                return 'Cancel reason';
+            }
+
+            $j = $this->cancelReasonRepository->find($value);
+
+            return $this->translatableStringHelper->localize(
+                $j->getName()
+            );
+        };
+    }
+
+    public function getQueryKeys($data): array
+    {
+        return ['cancel_reason_aggregator'];
+    }
+
+    public function buildForm(FormBuilderInterface $builder)
+    {
+        // no form
+    }
+
+    public function getTitle(): string
+    {
+        return 'Group by cancel reason';
+    }
+
+    public function addRole()
+    {
+        return null;
+    }
+
+    public function alterQuery(QueryBuilder $qb, $data)
+    {
+        $qb->join('cal.cancelReason', 'cr');
+
+        $qb->addSelect('IDENTITY(cal.cancelReason) as cancel_reason_aggregator');
+
+        $groupBy = $qb->getDQLPart('groupBy');
+
+        if (!empty($groupBy)) {
+            $qb->addGroupBy('cancel_reason_aggregator');
+        } else {
+            $qb->groupBy('cancel_reason_aggregator');
+        }
+    }
+
+    public function applyOn(): string
+    {
+        return Declarations::CALENDAR_TYPE;
+    }
+}