+
+       /**
+        * Delete event
+        *
+        * @param string $calendar The calendar mail
+        * @param Event $event The google event instance
+        * @return void
+        */
+       function delete(string $calendar, Event $event): int {
+               //Get cache events
+               $cacheEvents = $this->item->get();
+
+               //Get event id
+               $eid = $event->getId();
+
+               //Delete the event
+               $this->service->events->delete($calendar, $eid);
+
+               //Set sid
+               $sid = intval(substr($event->getId(), strlen($this->prefix)));
+
+               //Remove from events and cache events
+               unset($cacheEvents[$sid]);
+
+               //Set cache events
+               $this->item->set($cacheEvents);
+
+               //Save cache item
+               $this->cache->saveDeferred($this->item);
+
+               //Return session id
+               return $sid;
+       }
+
+       /**
+        * Fill event
+        *
+        * TODO: add domain based/calendar mail specific templates ?
+        *
+        * @param array $session The session instance
+        * @param ?Event $event The event instance
+        * @return Event The filled event
+        */
+       function fill(array $session, ?Event $event = null): Event {
+               //Init private properties
+               $private = [
+                       'id' => $session['id'],
+                       'domain' => $this->domain,
+                       'updated' => $session['modified']->format(\DateTime::ISO8601)
+               ];
+
+               //Init shared properties
+               //TODO: validate for constraints here ??? https://developers.google.com/calendar/api/guides/extended-properties
+               //TODO: drop shared as unused ???
+               $shared = [
+                       'gps' => $session['l_latitude'].','.$session['l_longitude']
+               ];
+
+               //Init source
+               $source = new EventSource(
+                       [
+                               'title' => $this->translator->trans('%dance% %id% by %pseudonym%', ['%id%' => $session['id'], '%dance%' => $this->translator->trans($session['ad_name'].' '.lcfirst($session['ad_type'])), '%pseudonym%' => $session['au_pseudonym']]).' '.$this->translator->trans('at '.$session['l_title']),
+                               'url' => $this->router->generate('rapsysair_session_view', ['id' => $session['id'], 'location' => $this->slugger->slug($this->translator->trans($session['l_title'])), 'dance' => $this->slugger->slug($this->translator->trans($session['ad_name'].' '.lcfirst($session['ad_type']))), 'user' => $this->slugger->slug($session['au_pseudonym'])], UrlGeneratorInterface::ABSOLUTE_URL)
+                       ]
+               );
+
+               //Init location
+               $description = 'Emplacement :'."\n".$this->translator->trans($session['l_description']);
+               $shared['location'] = strip_tags($this->translator->trans($session['l_description']));
+
+               //Add description when available
+               if(!empty($session['p_description'])) {
+                       $description .= "\n\n".'Description :'."\n".strip_tags(preg_replace('!<a href="([^"]+)"(?: title="[^"]+")?'.'>([^<]+)</a>!', '\1', $this->markdown->convert(strip_tags($session['p_description']))));
+                       $shared['description'] = $this->markdown->convert(strip_tags($session['p_description']));
+               }
+
+               //Add class when available
+               if (!empty($session['p_class'])) {
+                       $description .= "\n\n".'Classe :'."\n".$session['p_class'];
+                       $shared['class'] = $session['p_class'];
+               }
+
+               //Add contact when available
+               if (!empty($session['p_contact'])) {
+                       $description .= "\n\n".'Contact :'."\n".$session['p_contact'];
+                       $shared['contact'] = $session['p_contact'];
+               }
+
+               //Add donate when available
+               if (!empty($session['p_donate'])) {
+                       $description .= "\n\n".'Contribuer :'."\n".$session['p_donate'];
+                       $shared['donate'] = $session['p_donate'];
+               }
+
+               //Add link when available
+               if (!empty($session['p_link'])) {
+                       $description .= "\n\n".'Site :'."\n".$session['p_link'];
+                       $shared['link'] = $session['p_link'];
+               }
+
+               //Add profile when available
+               if (!empty($session['p_profile'])) {
+                       $description .= "\n\n".'Réseau social :'."\n".$session['p_profile'];
+                       $shared['profile'] = $session['p_profile'];
+               }
+
+               //Set properties
+               $properties = new EventExtendedProperties(
+                       [
+                               //Set private property
+                               'private' => $private,
+                               //Set shared property
+                               'shared' => $shared
+                       ]
+               );
+
+               //Without event
+               if ($event === null) {
+                       //Init event
+                       $event = new Event(
+                               [
+                                       //Id must match /^[a-v0-9]{5,}$/
+                                       //XXX: see https://developers.google.com/calendar/api/v3/reference/events/insert#id
+                                       'id' => $this->prefix.$session['id'],
+                                       'summary' => $source->getTitle(),
+                                       'description' => $description,
+                                       'status' => empty($session['a_canceled'])?'confirmed':'cancelled',
+                                       'location' => implode(' ', [$session['l_address'], $session['l_zipcode'], $session['l_city']]),
+                                       'source' => $source,
+                                       'extendedProperties' => $properties,
+                                       //TODO: colorId ?
+                                       //TODO: attendees[] ?
+                                       'start' => [
+                                               'dateTime' => $session['start']->format(\DateTime::ISO8601)
+                                       ],
+                                       'end' => [
+                                               'dateTime' => $session['stop']->format(\DateTime::ISO8601)
+                                       ]
+                               ]
+                       );
+               //With event
+               } else {
+                       //Set summary
+                       $event->setSummary($source->getTitle());
+
+                       //Set description
+                       $event->setDescription($description);
+
+                       //Set status
+                       $event->setStatus(empty($session['a_canceled'])?'confirmed':'cancelled');
+
+                       //Set location
+                       $event->setLocation(implode(' ', [$session['l_address'], $session['l_zipcode'], $session['l_city']]));
+
+                       //Get source
+                       #$eventSource = $event->getSource();
+
+                       //Update source title
+                       #$eventSource->setTitle($source->getTitle());
+
+                       //Update source url
+                       #$eventSource->setUrl($source->getUrl());
+
+                       //Set source
+                       $event->setSource($source);
+
+                       //Get extended properties
+                       #$extendedProperties = $event->getExtendedProperties();
+
+                       //Update private
+                       #$extendedProperties->setPrivate($properties->getPrivate());
+
+                       //Update shared
+                       #$extendedProperties->setShared($properties->getShared());
+
+                       //Set properties
+                       $event->setExtendedProperties($properties);
+
+                       //TODO: colorId ?
+                       //TODO: attendees[] ?
+
+                       //Set start
+                       $start = $event->getStart();
+
+                       //Update start datetime
+                       $start->setDateTime($session['start']->format(\DateTime::ISO8601));
+
+                       //Set end
+                       $end = $event->getEnd();
+
+                       //Update stop datetime
+                       $end->setDateTime($session['stop']->format(\DateTime::ISO8601));
+               }
+
+               //Return event
+               return $event;
+       }
+
+       /**
+        * Insert event
+        *
+        * @param string $calendar The calendar mail
+        * @param array $session The session instance
+        * @return void
+        */
+       function insert(string $calendar, array $session): void {
+               //Get event
+               $event = $this->fill($session);
+
+               //Get cache events
+               $cacheEvents = $this->item->get();
+
+               //Insert in cache event
+               $cacheEvents[$session['id']] = $this->service->events->insert($calendar, $event);
+
+               //Set cache events
+               $this->item->set($cacheEvents);
+
+               //Save cache item
+               $this->cache->saveDeferred($this->item);
+       }
+
+       /**
+        * Update event
+        *
+        * @param string $calendar The calendar mail
+        * @param Event $event The google event instance
+        * @param array $session The session instance
+        * @return int The session id
+        */
+       function update(string $calendar, Event $event, array $session): int {
+               //Get event
+               $event = $this->fill($session, $event);
+
+               //Get cache events
+               $cacheEvents = $this->item->get();
+
+               //Update in cache events
+               $cacheEvents[$session['id']] = $this->service->events->update($calendar, $event->getId(), $event);
+
+               //Set cache events
+               $this->item->set($cacheEvents);
+
+               //Save cache item
+               $this->cache->saveDeferred($this->item);
+
+               //Return session id
+               return $session['id'];
+       }