add average duration indicator calendar

src/Bundle/ChillCalendarBundle/Export/Export/StatAppointmentDuration.php

@@ -0,0 +1,103 @@
+<?php
+
+namespace Chill\CalendarBundle\Export\Export;
+
+use Chill\CalendarBundle\Export\Declarations;
+use Chill\CalendarBundle\Repository\CalendarRepository;
+use Chill\MainBundle\Export\ExportInterface;
+use Chill\MainBundle\Export\FormatterInterface;
+use Chill\MainBundle\Export\GroupedExportInterface;
+use Chill\PersonBundle\Security\Authorization\AccompanyingPeriodVoter;
+use Doctrine\ORM\Query;
+use Doctrine\ORM\QueryBuilder;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\Security\Core\Role\Role;
+
+class StatAppointmentDuration implements ExportInterface, GroupedExportInterface
+{
+
+    private CalendarRepository $calendarRepository;
+
+    public function __construct(
+        CalendarRepository $calendarRepository
+    ) {
+        $this->calendarRepository = $calendarRepository;
+    }
+
+    public function buildForm(FormBuilderInterface $builder): void
+    {
+        // no form needed
+    }
+
+    public function getTitle(): string
+    {
+        return 'Average appointment duration';
+    }
+
+    public function getAllowedFormattersTypes(): array
+    {
+        return [FormatterInterface::TYPE_TABULAR];
+    }
+
+    public function getDescription(): string
+    {
+        return 'Get the average of appointment duration according to various filters';
+    }
+
+    public function getLabels($key, array $values, $data)
+    {
+        if ('export_result' !== $key) {
+            throw new \LogicException("the key {$key} is not used by this export");
+        }
+
+        $labels = array_combine($values, $values);
+        $labels['_header'] = $this->getTitle();
+
+        return static function ($value) use ($labels) {
+            return $labels[$value];
+        };
+    }
+
+    public function getQueryKeys($data): array
+    {
+        return ['export_result'];
+    }
+
+    public function getResult($qb, $data)
+    {
+        return $qb->getQuery()->getResult(Query::HYDRATE_SCALAR);
+    }
+
+    public function getType(): string
+    {
+        return Declarations::CALENDAR_TYPE;
+    }
+
+    public function initiateQuery(array $requiredModifiers, array $acl, array $data = []): QueryBuilder
+    {
+        $qb = $this->calendarRepository->createQueryBuilder('cal');
+
+        $qb
+            ->select('AVG(cal.endDate - cal.startDate) AS export_result');
+
+        return $qb;
+    }
+
+    public function requiredRole(): Role
+    {
+        return new Role(AccompanyingPeriodVoter::STATS);
+    }
+
+    public function supportsModifiers(): array
+    {
+        return [
+            Declarations::CALENDAR_TYPE
+        ];
+    }
+
+    public function getGroup(): string
+    {
+        return 'Exports of calendar';
+    }
+
+}

src/Bundle/ChillCalendarBundle/Resources/config/services/exports.yaml

@@ -6,4 +6,11 @@ services:
     autowire: true
     autoconfigure: true
     tags:
-      - { name: chill.export, alias: count_appointments }
+      - { name: chill.export, alias: count_appointments }
+
+  chill.calendar.export.average_duration_appointments:
+    class: Chill\CalendarBundle\Export\Export\StatAppointmentDuration
+    autowire: true
+    autoconfigure: true
+    tags:
+      - { name: chill.export, alias: average_duration_appointments }

src/Bundle/ChillCalendarBundle/translations/messages.fr.yml

@@ -42,3 +42,5 @@ crud:
 # exports
 Exports of calendar: Exports des rendez-vous
 Count appointments: Nombre des rendez-vous
+Average appointment duration: Moyenne des durées des rendez-vous
+Get the average of appointment duration according to various filters: Calculer la moyenne des durées des rendez-vous