serializer on accompanying course

Two new routes:

* `GET /{_locale}/person/api/1.0/accompanying-course/{parcours_id}/show.json`: get a json representation for a course
* `POST /{_locale}/person/api/1.0/accompanying-course/{parcours_id}/participation.json`:
add a particitipation to course. Usage:

    `curl -v --cookie "PHPSESSID=fed98aa23e40cb36e630f84155aea3bb;" -X
POST --data '{ "id": 481 }'
http://localhost:8001/fr/person/api/1.0/accompanying-course/270/participation.json`

    Will add the person with id "481" to the course.

src/Bundle/ChillPersonBundle/Privacy/AccompanyingPeriodPrivacyEvent.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Chill\PersonBundle\Privacy;
+
+/*
+ * Chill is a software for social workers
+ *
+ * Copyright (C) 2014-2015, Champs Libres Cooperative SCRLFS,
+ * <http://www.champs-libres.coop>, <info@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+use Symfony\Component\EventDispatcher\Event;
+use Chill\PersonBundle\Entity\Person;
+use Chill\PersonBundle\Entity\AccompanyingPeriod;
+
+class AccompanyingPeriodPrivacyEvent extends Event
+{
+    public const ACCOMPANYING_PERIOD_PRIVACY_EVENT = 'chill_person.accompanying_period_privacy_event';
+
+    protected AccompanyingPeriod $period;
+
+    protected array $args;
+
+    public function __construct($period, $args = [])
+    {
+        $this->period = $period;
+        $this->args = $args;
+    }
+
+    public function getPeriod(): AccompanyingPeriod
+    {
+        return $this->period;
+    }
+
+    public function getArgs(): array
+    {
+        return $this->args;
+    }
+}

src/Bundle/ChillPersonBundle/Privacy/PrivacyEventSubscriber.php

@@ -26,20 +26,21 @@ use Psr\Log\LoggerInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;
 use Chill\PersonBundle\Entity\Person;
+use Chill\PersonBundle\Privacy\AccompanyingPeriodPrivacyEvent;
 
 class PrivacyEventSubscriber implements EventSubscriberInterface
 {
-    
+
     /**
      * @var LoggerInterface
      */
     protected $logger;
-    
+
     /**
      * @var TokenStorageInterface
      */
     protected $token;
-    
+
     /**
      * PrivacyEventSubscriber constructor.
      *
@@ -50,40 +51,64 @@ class PrivacyEventSubscriber implements EventSubscriberInterface
         $this->logger = $logger;
         $this->token = $token;
     }
-    
+
     public static function getSubscribedEvents()
     {
-        return array(PrivacyEvent::PERSON_PRIVACY_EVENT => array(
-            array('onPrivacyEvent')
-        ));
+        return [
+            PrivacyEvent::PERSON_PRIVACY_EVENT => [
+                ['onPrivacyEvent']
+            ],
+            AccompanyingPeriodPrivacyEvent::ACCOMPANYING_PERIOD_PRIVACY_EVENT => [
+                ['onAccompanyingPeriodPrivacyEvent']
+            ]
+        ];
     }
-    
+
+    public function onAccompanyingPeriodPrivacyEvent(AccompanyingPeriodPrivacyEvent $event)
+    {
+        $involved = $this->getInvolved();
+        $involved['period_id'] = $event->getPeriod()->getId();
+        $involved['persons'] = $event->getPeriod()->getPersons()
+            ->map(function(Person $p) { return $p->getId(); })
+            ->toArray();
+
+        $this->logger->notice(
+            "[Privacy Event] An accompanying period has been viewed",
+            array_merge($involved, $event->getArgs())
+        );
+    }
+
     public function onPrivacyEvent(PrivacyEvent $event)
     {
-        $persons = array();
-        
+        $persons = [];
+
         if ($event->hasPersons() === true) {
             foreach ($event->getPersons() as $person) {
                 $persons[] = $person->getId();
             }
         }
 
-        $involved = array(
-            'by_user' => $this->token->getToken()->getUser()->getUsername(),
-            'by_user_id' => $this->token->getToken()->getUser()->getId(),
-            'person_id' => $event->getPerson()->getId(),
-        );
-        
+        $involved = $this->getInvolved();
+        $involved['person_id'] = $event->getPerson()->getId();
+
         if ($event->hasPersons()) {
             $involved['persons'] = \array_map(
-                function(Person $p) { return $p->getId(); }, 
+                function(Person $p) { return $p->getId(); },
                 $event->getPersons()
             );
         }
-        
+
         $this->logger->notice(
             "[Privacy Event] A Person Folder has been viewed",
             array_merge($involved, $event->getArgs())
         );
     }
-}
+
+    protected function getInvolved(): array
+    {
+        return [
+            'by_user' => $this->token->getToken()->getUser()->getUsername(),
+            'by_user_id' => $this->token->getToken()->getUser()->getId(),
+        ];
+    }
+}