+class SessionController extends AbstractController {
+       /**
+        * Edit session
+        *
+        * @desc Persist session and all required dependencies in database
+        *
+        * @param Request $request The request instance
+        *
+        * @return Response The rendered view or redirection
+        *
+        * @throws \RuntimeException When user has not at least guest role
+        */
+       public function edit(Request $request, $id): Response {
+               //Prevent non-guest to access here
+               $this->denyAccessUnlessGranted('ROLE_GUEST', null, $this->translator->trans('Unable to access this page without role %role%!', ['%role%' => $this->translator->trans('Guest')]));
+
+               //Reject non post requests
+               if (!$request->isMethod('POST')) {
+                       throw new \RuntimeException('Request method MUST be POST');
+               }
+
+               //Get doctrine
+               $doctrine = $this->getDoctrine();
+
+               //Set locale
+               $locale = $request->getLocale();
+
+               //Fetch session
+               $session = $doctrine->getRepository(Session::class)->fetchOneById($id, $locale);
+
+               //Check if
+               if (
+                       //we are admin
+                       !$this->isGranted('ROLE_ADMIN') &&
+                       //or attributed user
+                       $this->getUser()->getId() != $session['au_id'] &&
+                       //or application without attributed user
+                       $session['au_id'] !== null && !in_array($this->getUser()->getId(), explode("\n", $session['sau_id']))
+               ) {
+                       //Prevent non admin and non attributed user access
+                       throw $this->createAccessDeniedException();
+               }
+
+               //Set now
+               $now = new \DateTime('now');
+
+               //Create SessionType form
+               $form = $this->createForm('Rapsys\AirBundle\Form\SessionType', null, [
+                       //Set the action
+                       'action' => $this->generateUrl('rapsys_air_session_edit', [ 'id' => $id ]),
+                       //Set the form attribute
+                       'attr' => [],
+                       //Set admin
+                       'admin' => $this->isGranted('ROLE_ADMIN'),
+                       //Set default user to current
+                       'user' => $this->getUser()->getId(),
+                       //Set date
+                       'date' => $session['date'],
+                       //Set begin
+                       'begin' => $session['begin'],
+                       //Set length
+                       'length' => $session['length'],
+                       //Set raincancel
+                       'raincancel' => ($this->isGranted('ROLE_ADMIN') || $this->getUser()->getId() == $session['au_id']) && $session['rainfall'] >= 2,
+                       //Set cancel
+                       'cancel' => $this->isGranted('ROLE_ADMIN') || in_array($this->getUser()->getId(), explode("\n", $session['sau_id'])),
+                       //Set modify
+                       'modify' => $this->isGranted('ROLE_ADMIN') || $this->getUser()->getId() == $session['au_id'] && $session['stop'] >= $now && $this->isGranted('ROLE_REGULAR'),
+                       //Set move
+                       'move' => $this->isGranted('ROLE_ADMIN') || $this->getUser()->getId() == $session['au_id'] && $session['stop'] >= $now && $this->isGranted('ROLE_SENIOR'),
+                       //Set attribute
+                       'attribute' => $this->isGranted('ROLE_ADMIN') && $session['locked'] === null,
+                       //Set session
+                       'session' => $session['id']
+               ]);
+
+               //Refill the fields in case of invalid form
+               $form->handleRequest($request);
+
+               //Handle invalid data
+               if (!$form->isSubmitted() || !$form->isValid()) {
+                       //Set page
+                       $this->context['title'] = $this->translator->trans(!empty($session['au_id'])?'Session %id% by %pseudonym%':'Session %id%', ['%id%' => $id, '%pseudonym%' => $session['au_pseudonym']]);
+
+                       //Set facebook title
+                       $this->context['facebook']['metas']['og:title'] = $this->context['title'].' '.$this->translator->trans('at '.$session['l_title']);
+
+                       //Set section
+                       $this->context['section'] = $this->translator->trans($session['l_title']);
+
+                       //Set localization date formater
+                       $intl = new \IntlDateFormatter($locale, \IntlDateFormatter::GREGORIAN, \IntlDateFormatter::SHORT);
+
+                       //Set description
+                       $this->context['description'] = $this->translator->trans('Outdoor Argentine Tango session the %date%', [ '%date%' => $intl->format($session['start']) ]);
+
+                       //Set localization date formater
+                       $intlDate = new \IntlDateFormatter($locale, \IntlDateFormatter::TRADITIONAL, \IntlDateFormatter::NONE);
+
+                       //Set localization time formater
+                       $intlTime = new \IntlDateFormatter($locale, \IntlDateFormatter::NONE, \IntlDateFormatter::SHORT);
+
+                       //Set facebook image
+                       $this->context['facebook'] += [
+                               'texts' => [
+                                       $session['au_pseudonym'] => [
+                                               'font' => 'irishgrover',
+                                               'size' => 110
+                                       ],
+                                       ucfirst($intlDate->format($session['start']))."\n".$this->translator->trans('From %start% to %stop%', ['%start%' => $intlTime->format($session['start']), '%stop%' => $intlTime->format($session['stop'])]) => [
+                                               'align' => 'left'
+                                       ],
+                                       $this->translator->trans('at '.$session['l_title']) => [
+                                               'align' => 'right',
+                                               'font' => 'labelleaurore',
+                                               'size' => 75
+                                       ]
+                               ],
+                               'updated' => $session['updated']->format('U')
+                       ];
+
+                       //Add session in context
+                       $this->context['session'] = [
+                               'id' => $id,
+                               'title' => $this->translator->trans('Session %id%', ['%id%' => $id]),
+                               'location' => [
+                                       'id' => $session['l_id'],
+                                       'at' => $this->translator->trans('at '.$session['l_title'])
+                               ]
+                       ];
+
+                       //Render the view
+                       return $this->render('@RapsysAir/session/edit.html.twig', ['form' => $form->createView()]+$this->context);
+               }
+
+               //Get manager
+               $manager = $doctrine->getManager();
+
+               //Get data
+               $data = $form->getData();
+
+               //Fetch session
+               $session = $doctrine->getRepository(Session::class)->findOneById($id);
+
+               //Set user
+               $user = $this->getUser();
+
+               //Replace with requested user for admin
+               if ($this->isGranted('ROLE_ADMIN') && !empty($data['user'])) {
+                       $user = $doctrine->getRepository(User::class)->findOneById($data['user']);
+               }
+
+               //Set datetime
+               $datetime = new \DateTime('now');
+
+               //Set canceled time at start minus one day
+               $canceled = (clone $session->getStart())->sub(new \DateInterval('P1D'));
+
+               //Set action
+               $action = [
+                       'raincancel' => $form->has('raincancel') && $form->get('raincancel')->isClicked(),
+                       'modify' => $form->has('modify') && $form->get('modify')->isClicked(),
+                       'move' => $form->has('move') && $form->get('move')->isClicked(),
+                       'cancel' => $form->has('cancel') && $form->get('cancel')->isClicked(),
+                       'forcecancel' => $form->has('forcecancel') && $form->get('forcecancel')->isClicked(),
+                       'attribute' => $form->has('attribute') && $form->get('attribute')->isClicked(),
+                       'autoattribute' => $form->has('autoattribute') && $form->get('autoattribute')->isClicked(),
+                       'lock' => $form->has('lock') && $form->get('lock')->isClicked(),
+               ];
+
+               //With raincancel and application and (rainfall or admin)
+               if ($action['raincancel'] && ($application = $session->getApplication()) && ($session->getRainfall() >= 2 || $this->isGranted('ROLE_ADMIN'))) {
+                       //Cancel application at start minus one day
+                       $application->setCanceled($canceled);
+
+                       //Update time
+                       $application->setUpdated($datetime);
+
+                       //Insufficient rainfall
+                       //XXX: is admin
+                       if ($session->getRainfall() < 2) {
+                               //Set score
+                               //XXX: magic cheat score 42
+                               $application->setScore(42);
+                       }
+
+                       //Queue application save
+                       $manager->persist($application);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Application %id% updated', ['%id%' => $application->getId()]));
+
+                       //Update time
+                       $session->setUpdated($datetime);
+
+                       //Queue session save
+                       $manager->persist($session);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+               //With modify
+               } elseif ($action['modify']) {
+                       //With admin
+                       if ($this->isGranted('ROLE_ADMIN')) {
+                               //Set date
+                               $session->setDate($data['date']);
+                       }
+
+                       //Set begin
+                       $session->setBegin($data['begin']);
+
+                       //Set length
+                       $session->setLength($data['length']);
+
+                       //Update time
+                       $session->setUpdated($datetime);
+
+                       //Queue session save
+                       $manager->persist($session);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+               //With move
+               } elseif ($action['move']) {
+                       //Set location
+                       $session->setLocation($doctrine->getRepository(Location::class)->findOneById($data['location']));
+
+                       //Update time
+                       $session->setUpdated($datetime);
+
+                       //Queue session save
+                       $manager->persist($session);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+               //With cancel or forcecancel
+               } elseif ($action['cancel'] || $action['forcecancel']) {
+                       //Get application
+                       $application = $doctrine->getRepository(Application::class)->findOneBySessionUser($session, $user);
+
+                       //Not already canceled
+                       if ($application->getCanceled() === null) {
+                               //Cancel application
+                               $application->setCanceled($datetime);
+
+                               //Check if application is session application and (canceled 24h before start or forcecancel (as admin))
+                               #if ($session->getApplication() == $application && ($datetime < $canceled || $action['forcecancel'])) {
+                               if ($session->getApplication() == $application && $action['forcecancel']) {
+                                       //Set score
+                                       //XXX: magic cheat score 42
+                                       $application->setScore(42);
+
+                                       //Unattribute session
+                                       $session->setApplication(null);
+
+                                       //Update time
+                                       $session->setUpdated($datetime);
+
+                                       //Queue session save
+                                       $manager->persist($session);
+
+                                       //Add notice in flash message
+                                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+                               }
+                       //Already canceled
+                       } else {
+                               //Uncancel application
+                               $application->setCanceled(null);
+                       }
+
+                       //Update time
+                       $application->setUpdated($datetime);
+
+                       //Queue application save
+                       $manager->persist($application);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Application %id% updated', ['%id%' => $application->getId()]));
+               //With attribute
+               } elseif ($action['attribute']) {
+                       //Get application
+                       $application = $doctrine->getRepository(Application::class)->findOneBySessionUser($session, $user);
+
+                       //Already canceled
+                       if ($application->getCanceled() !== null) {
+                               //Uncancel application
+                               $application->setCanceled(null);
+                       }
+
+                       //Set score
+                       //XXX: magic cheat score 42
+                       $application->setScore(42);
+
+                       //Update time
+                       $application->setUpdated($datetime);
+
+                       //Queue application save
+                       $manager->persist($application);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Application %id% updated', ['%id%' => $application->getId()]));
+
+                       //Unattribute session
+                       $session->setApplication($application);
+
+                       //Update time
+                       $session->setUpdated($datetime);
+
+                       //Queue session save
+                       $manager->persist($session);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+               //With autoattribute
+               } elseif ($action['autoattribute']) {
+                       //Get best application
+                       //XXX: best application may not issue result while grace time or bad behaviour
+                       if (!empty($application = $doctrine->getRepository(Session::class)->findBestApplicationById($id))) {
+                               //Attribute session
+                               $session->setApplication($application);
+
+                               //Update time
+                               $session->setUpdated($datetime);
+
+                               //Queue session save
+                               $manager->persist($session);
+
+                               //Add notice in flash message
+                               $this->addFlash('notice', $this->translator->trans('Session %id% auto attributed', ['%id%' => $id]));
+                       //No application
+                       } else {
+                               //Add warning in flash message
+                               $this->addFlash('warning', $this->translator->trans('Session %id% not auto attributed', ['%id%' => $id]));
+                       }
+               //With lock
+               } elseif ($action['lock']) {
+                       //Already locked
+                       if ($session->getLocked() !== null) {
+                               //Set uncanceled
+                               $canceled = null;
+
+                               //Unlock session
+                               $session->setLocked(null);
+                       //Not locked
+                       } else {
+                               //Get application
+                               if ($application = $session->getApplication()) {
+                                       //Set score
+                                       //XXX: magic cheat score 42
+                                       $application->setScore(42);
+
+                                       //Update time
+                                       $application->setUpdated($datetime);
+
+                                       //Queue application save
+                                       $manager->persist($application);
+
+                                       //Add notice in flash message
+                                       $this->addFlash('notice', $this->translator->trans('Application %id% updated', ['%id%' => $application->getId()]));
+                               }
+
+                               //Unattribute session
+                               $session->setApplication(null);
+
+                               //Lock session
+                               $session->setLocked($datetime);
+                       }
+
+                       //Update time
+                       $session->setUpdated($datetime);
+
+                       //Queue session save
+                       $manager->persist($session);
+
+                       //Add notice in flash message
+                       $this->addFlash('notice', $this->translator->trans('Session %id% updated', ['%id%' => $id]));
+               //Unknown action
+               } else {
+                       //Add warning in flash message
+                       $this->addFlash('warning', $this->translator->trans('Session %id% not updated', ['%id%' => $id]));
+               }
+
+               //Flush to get the ids
+               $manager->flush();
+
+               //Extract and process referer
+               if ($referer = $request->headers->get('referer')) {
+                       //Create referer request instance
+                       $req = Request::create($referer);
+
+                       //Get referer path
+                       $path = $req->getPathInfo();
+
+                       //Get referer query string
+                       $query = $req->getQueryString();
+
+                       //Remove script name
+                       $path = str_replace($request->getScriptName(), '', $path);
+
+                       //Try with referer path
+                       try {
+                               //Save old context
+                               $oldContext = $this->router->getContext();
+
+                               //Force clean context
+                               //XXX: prevent MethodNotAllowedException because current context method is POST in onevendor/symfony/routing/Matcher/Dumper/CompiledUrlMatcherTrait.php+42
+                               $this->router->setContext(new RequestContext());
+
+                               //Retrieve route matching path
+                               $route = $this->router->match($path);
+
+                               //Reset context
+                               $this->router->setContext($oldContext);
+
+                               //Clear old context
+                               unset($oldContext);
+
+                               //Extract name
+                               $name = $route['_route'];
+
+                               //Remove route and controller from route defaults
+                               unset($route['_route'], $route['_controller']);
+
+                               //Generate url
+                               return $this->redirectToRoute($name, $route);
+                       //No route matched
+                       } catch(MethodNotAllowedException|ResourceNotFoundException $e) {
+                               //Unset referer to fallback to default route
+                               unset($referer);
+                       }
+               }
+
+               //Redirect to cleanup the form
+               return $this->redirectToRoute('rapsys_air_session_view', ['id' => $id]);
+       }
+
+       /**
+        * List all sessions
+        *
+        * @desc Display all sessions with an application or login form
+        *
+        * @param Request $request The request instance
+        *
+        * @return Response The rendered view
+        */
+       public function index(Request $request): Response {
+               //Fetch doctrine
+               $doctrine = $this->getDoctrine();
+
+               //Set section
+               $section = $this->translator->trans('Sessions');
+
+               //Set description
+               $this->context['description'] = $this->translator->trans('Libre Air session list');
+
+               //Set keywords
+               $this->context['keywords'] = [
+                       $this->translator->trans('sessions'),
+                       $this->translator->trans('session list'),
+                       $this->translator->trans('listing'),
+                       $this->translator->trans('Libre Air')
+               ];
+
+               //Set title
+               $title = $this->translator->trans($this->config['site']['title']).' - '.$section;
+
+               //Compute period
+               $period = new \DatePeriod(
+                       //Start from first monday of week
+                       new \DateTime('Monday this week'),
+                       //Iterate on each day
+                       new \DateInterval('P1D'),
+                       //End with next sunday and 4 weeks
+                       new \DateTime(
+                               $this->isGranted('IS_AUTHENTICATED_REMEMBERED')?'Monday this week + 3 week':'Monday this week + 2 week'
+                       )
+               );
+
+               //Fetch calendar
+               //TODO: highlight with current session route parameter
+               $calendar = $doctrine->getRepository(Session::class)->fetchCalendarByDatePeriod($this->translator, $period, null, $request->get('session'), !$this->isGranted('IS_AUTHENTICATED_REMEMBERED'), $request->getLocale());
+
+               //Fetch locations
+               //XXX: we want to display all active locations anyway
+               $locations = $doctrine->getRepository(Location::class)->findTranslatedSortedByPeriod($this->translator, $period);
+
+               //Render the view
+               return $this->render('@RapsysAir/session/index.html.twig', ['title' => $title, 'section' => $section, 'calendar' => $calendar, 'locations' => $locations]+$this->context);
+       }
+
+       /**
+        * List all sessions for tango argentin
+        *
+        * @desc Display all sessions in tango argentin json format
+        *
+        * @todo Drop it if unused by tangoargentin ???
+        *
+        * @param Request $request The request instance
+        *
+        * @return Response The rendered view or redirection
+        */
+       public function tangoargentin(Request $request): Response {
+               //Fetch doctrine
+               $doctrine = $this->getDoctrine();
+
+               //Compute period
+               $period = new \DatePeriod(
+                       //Start from first monday of week
+                       new \DateTime('today'),
+                       //Iterate on each day
+                       new \DateInterval('P1D'),
+                       //End with next sunday and 4 weeks
+                       new \DateTime('+2 week')
+               );
+
+               //Retrieve events to update
+               $sessions = $doctrine->getRepository(Session::class)->fetchAllByDatePeriod($period, $request->getLocale());
+
+               //Init return array
+               $ret = [];
+
+               //Iterate on sessions
+               foreach($sessions as $sessionId => $session) {
+                       //Set title
+                       $title = $session['au_pseudonym'].' '.$this->translator->trans('at '.$session['l_title']);
+
+                       //Use Transliterator if available
+                       if (class_exists('Transliterator')) {
+                               $trans = \Transliterator::create('Any-Latin; Latin-ASCII; Upper()');
+                               $title = $trans->transliterate($title);
+                       } else {
+                               $title = strtoupper($title);
+                       }
+
+                       //Set rate
+                       $rate = 'Au chapeau';
+
+                       //Without hat
+                       if ($session['p_hat'] === null) {
+                               //Set rate
+                               $rate = 'Gratuit';
+
+                               //With rate
+                               if ($session['p_rate'] !== null) {
+                                       //Set rate
+                                       $rate = $session['p_rate'].' €';
+                               }
+                       //With hat
+                       } else {
+                               //With rate
+                               if ($session['p_rate'] !== null) {
+                                       //Set rate
+                                       $rate .= ', idéalement '.$session['p_rate'].' €';
+                               }
+                       }
+
+                       //Store session data
+                       $ret[$sessionId] = [
+                               'start' => $session['start']->format(\DateTime::ISO8601),
+                               'stop' => $session['start']->format(\DateTime::ISO8601),
+                               'title' => $title,
+                               'short' => $session['p_short'],
+                               'rate' => $rate,
+                               'location' => implode(' ', [$session['l_address'], $session['l_zipcode'], $session['l_city']]),
+                               'status' => (empty($session['a_canceled']) && empty($session['locked']))?'confirmed':'cancelled',
+                               'updated' => $session['updated']->format(\DateTime::ISO8601),
+                               'organizer' => $session['au_forename'],
+                               'source' => $this->router->generate('rapsys_air_session_view', ['id' => $sessionId], UrlGeneratorInterface::ABSOLUTE_URL)
+                       ];
+               }
+
+               //Set response
+               $response = new Response(json_encode($ret));
+
+               //Set header
+               $response->headers->set('Content-Type', 'application/json');
+
+               //Send response
+               return $response;
+       }
+