nextcloud / server

apps/dav/lib/CalDAV/Schedule/IMipPlugin.php

Indentation +627 added lines, -627 removed lines

@@ -72,194 +72,194 @@ 
  */
 class IMipPlugin extends SabreIMipPlugin {
 
-	/** @var string */
-	private $userId;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var IMailer */
-	private $mailer;
-
-	/** @var ILogger */
-	private $logger;
-
-	/** @var ITimeFactory */
-	private $timeFactory;
-
-	/** @var L10NFactory */
-	private $l10nFactory;
-
-	/** @var IURLGenerator */
-	private $urlGenerator;
-
-	/** @var ISecureRandom */
-	private $random;
-
-	/** @var IDBConnection */
-	private $db;
-
-	/** @var Defaults */
-	private $defaults;
-
-	/** @var IUserManager */
-	private $userManager;
-
-	public const MAX_DATE = '2038-01-01';
-
-	public const METHOD_REQUEST = 'request';
-	public const METHOD_REPLY = 'reply';
-	public const METHOD_CANCEL = 'cancel';
-	public const IMIP_INDENT = 15; // Enough for the length of all body bullet items, in all languages
-
-	/**
-	 * @param IConfig $config
-	 * @param IMailer $mailer
-	 * @param ILogger $logger
-	 * @param ITimeFactory $timeFactory
-	 * @param L10NFactory $l10nFactory
-	 * @param IUrlGenerator $urlGenerator
-	 * @param Defaults $defaults
-	 * @param ISecureRandom $random
-	 * @param IDBConnection $db
-	 * @param string $userId
-	 */
-	public function __construct(IConfig $config, IMailer $mailer, ILogger $logger,
-								ITimeFactory $timeFactory, L10NFactory $l10nFactory,
-								IURLGenerator $urlGenerator, Defaults $defaults,
-								ISecureRandom $random, IDBConnection $db, IUserManager $userManager,
-								$userId) {
-		parent::__construct('');
-		$this->userId = $userId;
-		$this->config = $config;
-		$this->mailer = $mailer;
-		$this->logger = $logger;
-		$this->timeFactory = $timeFactory;
-		$this->l10nFactory = $l10nFactory;
-		$this->urlGenerator = $urlGenerator;
-		$this->random = $random;
-		$this->db = $db;
-		$this->defaults = $defaults;
-		$this->userManager = $userManager;
-	}
-
-	/**
-	 * Event handler for the 'schedule' event.
-	 *
-	 * @param Message $iTipMessage
-	 * @return void
-	 */
-	public function schedule(Message $iTipMessage) {
-
-		// Not sending any emails if the system considers the update
-		// insignificant.
-		if (!$iTipMessage->significantChange) {
-			if (!$iTipMessage->scheduleStatus) {
-				$iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
-			}
-			return;
-		}
-
-		$summary = $iTipMessage->message->VEVENT->SUMMARY;
-
-		if (parse_url($iTipMessage->sender, PHP_URL_SCHEME) !== 'mailto') {
-			return;
-		}
-
-		if (parse_url($iTipMessage->recipient, PHP_URL_SCHEME) !== 'mailto') {
-			return;
-		}
-
-		// don't send out mails for events that already took place
-		$lastOccurrence = $this->getLastOccurrence($iTipMessage->message);
-		$currentTime = $this->timeFactory->getTime();
-		if ($lastOccurrence < $currentTime) {
-			return;
-		}
-
-		// Strip off mailto:
-		$sender = substr($iTipMessage->sender, 7);
-		$recipient = substr($iTipMessage->recipient, 7);
-		if ($recipient === false || !$this->mailer->validateMailAddress($recipient)) {
-			// Nothing to send if the recipient doesn't have a valid email address
-			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
-			return;
-		}
-
-		$senderName = $iTipMessage->senderName ?: null;
-		$recipientName = $iTipMessage->recipientName ?: null;
-
-		if ($senderName === null || empty(trim($senderName))) {
-			$user = $this->userManager->get($this->userId);
-			if ($user) {
-				// getDisplayName automatically uses the uid
-				// if no display-name is set
-				$senderName = $user->getDisplayName();
-			}
-		}
-
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-
-		$attendee = $this->getCurrentAttendee($iTipMessage);
-		$defaultLang = $this->l10nFactory->findLanguage();
-		$lang = $this->getAttendeeLangOrDefault($defaultLang, $attendee);
-		$l10n = $this->l10nFactory->get('dav', $lang);
-
-		$meetingAttendeeName = $recipientName ?: $recipient;
-		$meetingInviteeName = $senderName ?: $sender;
-
-		$meetingTitle = $vevent->SUMMARY;
-		$meetingDescription = $vevent->DESCRIPTION;
-
-
-		$meetingUrl = $vevent->URL;
-		$meetingLocation = $vevent->LOCATION;
-
-		$defaultVal = '--';
-
-		$method = self::METHOD_REQUEST;
-		switch (strtolower($iTipMessage->method)) {
-			case self::METHOD_REPLY:
-				$method = self::METHOD_REPLY;
-				break;
-			case self::METHOD_CANCEL:
-				$method = self::METHOD_CANCEL;
-				break;
-		}
-
-		$data = [
-			'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
-			'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
-			'meeting_title' => (string)$meetingTitle ?: $defaultVal,
-			'meeting_description' => (string)$meetingDescription ?: $defaultVal,
-			'meeting_url' => (string)$meetingUrl ?: $defaultVal,
-		];
-
-		$fromEMail = Util::getDefaultEmailAddress('invitations-noreply');
-		$fromName = $l10n->t('%1$s via %2$s', [$senderName, $this->defaults->getName()]);
-
-		$message = $this->mailer->createMessage()
-			->setFrom([$fromEMail => $fromName])
-			->setTo([$recipient => $recipientName]);
-
-		if ($sender !== false) {
-			$message->setReplyTo([$sender => $senderName]);
-		}
-
-		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
-		$template->addHeader();
-
-		$summary = ((string) $summary !== '') ? (string) $summary : $l10n->t('Untitled event');
-
-		$this->addSubjectAndHeading($template, $l10n, $method, $summary);
-		$this->addBulletList($template, $l10n, $vevent);
-
-
-		// Only add response buttons to invitation requests: Fix Issue #11230
-		if (($method == self::METHOD_REQUEST) && $this->getAttendeeRSVP($attendee)) {
+    /** @var string */
+    private $userId;
+
+    /** @var IConfig */
+    private $config;
+
+    /** @var IMailer */
+    private $mailer;
+
+    /** @var ILogger */
+    private $logger;
+
+    /** @var ITimeFactory */
+    private $timeFactory;
+
+    /** @var L10NFactory */
+    private $l10nFactory;
+
+    /** @var IURLGenerator */
+    private $urlGenerator;
+
+    /** @var ISecureRandom */
+    private $random;
+
+    /** @var IDBConnection */
+    private $db;
+
+    /** @var Defaults */
+    private $defaults;
+
+    /** @var IUserManager */
+    private $userManager;
+
+    public const MAX_DATE = '2038-01-01';
+
+    public const METHOD_REQUEST = 'request';
+    public const METHOD_REPLY = 'reply';
+    public const METHOD_CANCEL = 'cancel';
+    public const IMIP_INDENT = 15; // Enough for the length of all body bullet items, in all languages
+
+    /**
+     * @param IConfig $config
+     * @param IMailer $mailer
+     * @param ILogger $logger
+     * @param ITimeFactory $timeFactory
+     * @param L10NFactory $l10nFactory
+     * @param IUrlGenerator $urlGenerator
+     * @param Defaults $defaults
+     * @param ISecureRandom $random
+     * @param IDBConnection $db
+     * @param string $userId
+     */
+    public function __construct(IConfig $config, IMailer $mailer, ILogger $logger,
+                                ITimeFactory $timeFactory, L10NFactory $l10nFactory,
+                                IURLGenerator $urlGenerator, Defaults $defaults,
+                                ISecureRandom $random, IDBConnection $db, IUserManager $userManager,
+                                $userId) {
+        parent::__construct('');
+        $this->userId = $userId;
+        $this->config = $config;
+        $this->mailer = $mailer;
+        $this->logger = $logger;
+        $this->timeFactory = $timeFactory;
+        $this->l10nFactory = $l10nFactory;
+        $this->urlGenerator = $urlGenerator;
+        $this->random = $random;
+        $this->db = $db;
+        $this->defaults = $defaults;
+        $this->userManager = $userManager;
+    }
+
+    /**
+     * Event handler for the 'schedule' event.
+     *
+     * @param Message $iTipMessage
+     * @return void
+     */
+    public function schedule(Message $iTipMessage) {
+
+        // Not sending any emails if the system considers the update
+        // insignificant.
+        if (!$iTipMessage->significantChange) {
+            if (!$iTipMessage->scheduleStatus) {
+                $iTipMessage->scheduleStatus = '1.0;We got the message, but it\'s not significant enough to warrant an email';
+            }
+            return;
+        }
+
+        $summary = $iTipMessage->message->VEVENT->SUMMARY;
+
+        if (parse_url($iTipMessage->sender, PHP_URL_SCHEME) !== 'mailto') {
+            return;
+        }
+
+        if (parse_url($iTipMessage->recipient, PHP_URL_SCHEME) !== 'mailto') {
+            return;
+        }
+
+        // don't send out mails for events that already took place
+        $lastOccurrence = $this->getLastOccurrence($iTipMessage->message);
+        $currentTime = $this->timeFactory->getTime();
+        if ($lastOccurrence < $currentTime) {
+            return;
+        }
+
+        // Strip off mailto:
+        $sender = substr($iTipMessage->sender, 7);
+        $recipient = substr($iTipMessage->recipient, 7);
+        if ($recipient === false || !$this->mailer->validateMailAddress($recipient)) {
+            // Nothing to send if the recipient doesn't have a valid email address
+            $iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+            return;
+        }
+
+        $senderName = $iTipMessage->senderName ?: null;
+        $recipientName = $iTipMessage->recipientName ?: null;
+
+        if ($senderName === null || empty(trim($senderName))) {
+            $user = $this->userManager->get($this->userId);
+            if ($user) {
+                // getDisplayName automatically uses the uid
+                // if no display-name is set
+                $senderName = $user->getDisplayName();
+            }
+        }
+
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+
+        $attendee = $this->getCurrentAttendee($iTipMessage);
+        $defaultLang = $this->l10nFactory->findLanguage();
+        $lang = $this->getAttendeeLangOrDefault($defaultLang, $attendee);
+        $l10n = $this->l10nFactory->get('dav', $lang);
+
+        $meetingAttendeeName = $recipientName ?: $recipient;
+        $meetingInviteeName = $senderName ?: $sender;
+
+        $meetingTitle = $vevent->SUMMARY;
+        $meetingDescription = $vevent->DESCRIPTION;
+
+
+        $meetingUrl = $vevent->URL;
+        $meetingLocation = $vevent->LOCATION;
+
+        $defaultVal = '--';
+
+        $method = self::METHOD_REQUEST;
+        switch (strtolower($iTipMessage->method)) {
+            case self::METHOD_REPLY:
+                $method = self::METHOD_REPLY;
+                break;
+            case self::METHOD_CANCEL:
+                $method = self::METHOD_CANCEL;
+                break;
+        }
+
+        $data = [
+            'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
+            'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
+            'meeting_title' => (string)$meetingTitle ?: $defaultVal,
+            'meeting_description' => (string)$meetingDescription ?: $defaultVal,
+            'meeting_url' => (string)$meetingUrl ?: $defaultVal,
+        ];
+
+        $fromEMail = Util::getDefaultEmailAddress('invitations-noreply');
+        $fromName = $l10n->t('%1$s via %2$s', [$senderName, $this->defaults->getName()]);
+
+        $message = $this->mailer->createMessage()
+            ->setFrom([$fromEMail => $fromName])
+            ->setTo([$recipient => $recipientName]);
+
+        if ($sender !== false) {
+            $message->setReplyTo([$sender => $senderName]);
+        }
+
+        $template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
+        $template->addHeader();
+
+        $summary = ((string) $summary !== '') ? (string) $summary : $l10n->t('Untitled event');
+
+        $this->addSubjectAndHeading($template, $l10n, $method, $summary);
+        $this->addBulletList($template, $l10n, $vevent);
+
+
+        // Only add response buttons to invitation requests: Fix Issue #11230
+        if (($method == self::METHOD_REQUEST) && $this->getAttendeeRSVP($attendee)) {
 
-			/*
+            /*
 			** Only offer invitation accept/reject buttons, which link back to the
 			** nextcloud server, to recipients who can access the nextcloud server via
 			** their internet/intranet.  Issue #12156
@@ -278,444 +278,444 @@ 
 			** To suppress URLs entirely, set invitation_link_recipients to boolean "no".
 			*/
 
-			$recipientDomain = substr(strrchr($recipient, "@"), 1);
-			$invitationLinkRecipients = explode(',', preg_replace('/\s+/', '', strtolower($this->config->getAppValue('dav', 'invitation_link_recipients', 'yes'))));
-
-			if (strcmp('yes', $invitationLinkRecipients[0]) === 0
-				 || in_array(strtolower($recipient), $invitationLinkRecipients)
-				 || in_array(strtolower($recipientDomain), $invitationLinkRecipients)) {
-				$this->addResponseButtons($template, $l10n, $iTipMessage, $lastOccurrence);
-			}
-		}
-
-		$template->addFooter();
-
-		$message->useTemplate($template);
-
-		$attachment = $this->mailer->createAttachment(
-			$iTipMessage->message->serialize(),
-			'event.ics',// TODO(leon): Make file name unique, e.g. add event id
-			'text/calendar; method=' . $iTipMessage->method
-		);
-		$message->attach($attachment);
-
-		try {
-			$failed = $this->mailer->send($message);
-			$iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
-			if ($failed) {
-				$this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' => implode(', ', $failed)]);
-				$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
-			}
-		} catch (\Exception $ex) {
-			$this->logger->logException($ex, ['app' => 'dav']);
-			$iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
-		}
-	}
-
-	/**
-	 * check if event took place in the past already
-	 * @param VCalendar $vObject
-	 * @return int
-	 */
-	private function getLastOccurrence(VCalendar $vObject) {
-		/** @var VEvent $component */
-		$component = $vObject->VEVENT;
-
-		$firstOccurrence = $component->DTSTART->getDateTime()->getTimeStamp();
-		// Finding the last occurrence is a bit harder
-		if (!isset($component->RRULE)) {
-			if (isset($component->DTEND)) {
-				$lastOccurrence = $component->DTEND->getDateTime()->getTimeStamp();
-			} elseif (isset($component->DURATION)) {
-				/** @var \DateTime $endDate */
-				$endDate = clone $component->DTSTART->getDateTime();
-				// $component->DTEND->getDateTime() returns DateTimeImmutable
-				$endDate = $endDate->add(DateTimeParser::parse($component->DURATION->getValue()));
-				$lastOccurrence = $endDate->getTimestamp();
-			} elseif (!$component->DTSTART->hasTime()) {
-				/** @var \DateTime $endDate */
-				$endDate = clone $component->DTSTART->getDateTime();
-				// $component->DTSTART->getDateTime() returns DateTimeImmutable
-				$endDate = $endDate->modify('+1 day');
-				$lastOccurrence = $endDate->getTimestamp();
-			} else {
-				$lastOccurrence = $firstOccurrence;
-			}
-		} else {
-			$it = new EventIterator($vObject, (string)$component->UID);
-			$maxDate = new \DateTime(self::MAX_DATE);
-			if ($it->isInfinite()) {
-				$lastOccurrence = $maxDate->getTimestamp();
-			} else {
-				$end = $it->getDtEnd();
-				while ($it->valid() && $end < $maxDate) {
-					$end = $it->getDtEnd();
-					$it->next();
-				}
-				$lastOccurrence = $end->getTimestamp();
-			}
-		}
-
-		return $lastOccurrence;
-	}
-
-	/**
-	 * @param Message $iTipMessage
-	 * @return null|Property
-	 */
-	private function getCurrentAttendee(Message $iTipMessage) {
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-		$attendees = $vevent->select('ATTENDEE');
-		foreach ($attendees as $attendee) {
-			/** @var Property $attendee */
-			if (strcasecmp($attendee->getValue(), $iTipMessage->recipient) === 0) {
-				return $attendee;
-			}
-		}
-		return null;
-	}
-
-	/**
-	 * @param string $default
-	 * @param Property|null $attendee
-	 * @return string
-	 */
-	private function getAttendeeLangOrDefault($default, Property $attendee = null) {
-		if ($attendee !== null) {
-			$lang = $attendee->offsetGet('LANGUAGE');
-			if ($lang instanceof Parameter) {
-				return $lang->getValue();
-			}
-		}
-		return $default;
-	}
-
-	/**
-	 * @param Property|null $attendee
-	 * @return bool
-	 */
-	private function getAttendeeRSVP(Property $attendee = null) {
-		if ($attendee !== null) {
-			$rsvp = $attendee->offsetGet('RSVP');
-			if (($rsvp instanceof Parameter) && (strcasecmp($rsvp->getValue(), 'TRUE') === 0)) {
-				return true;
-			}
-		}
-		// RFC 5545 3.2.17: default RSVP is false
-		return false;
-	}
-
-	/**
-	 * @param IL10N $l10n
-	 * @param VEvent $vevent
-	 */
-	private function generateWhenString(IL10N $l10n, VEvent $vevent) {
-		$dtstart = $vevent->DTSTART;
-		if (isset($vevent->DTEND)) {
-			$dtend = $vevent->DTEND;
-		} elseif (isset($vevent->DURATION)) {
-			$isFloating = $vevent->DTSTART->isFloating();
-			$dtend = clone $vevent->DTSTART;
-			$endDateTime = $dtend->getDateTime();
-			$endDateTime = $endDateTime->add(DateTimeParser::parse($vevent->DURATION->getValue()));
-			$dtend->setDateTime($endDateTime, $isFloating);
-		} elseif (!$vevent->DTSTART->hasTime()) {
-			$isFloating = $vevent->DTSTART->isFloating();
-			$dtend = clone $vevent->DTSTART;
-			$endDateTime = $dtend->getDateTime();
-			$endDateTime = $endDateTime->modify('+1 day');
-			$dtend->setDateTime($endDateTime, $isFloating);
-		} else {
-			$dtend = clone $vevent->DTSTART;
-		}
-
-		$isAllDay = $dtstart instanceof Property\ICalendar\Date;
-
-		/** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtstart */
-		/** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtend */
-		/** @var \DateTimeImmutable $dtstartDt */
-		$dtstartDt = $dtstart->getDateTime();
-		/** @var \DateTimeImmutable $dtendDt */
-		$dtendDt = $dtend->getDateTime();
-
-		$diff = $dtstartDt->diff($dtendDt);
-
-		$dtstartDt = new \DateTime($dtstartDt->format(\DateTimeInterface::ATOM));
-		$dtendDt = new \DateTime($dtendDt->format(\DateTimeInterface::ATOM));
-
-		if ($isAllDay) {
-			// One day event
-			if ($diff->days === 1) {
-				return $l10n->l('date', $dtstartDt, ['width' => 'medium']);
-			}
-
-			// DTEND is exclusive, so if the ics data says 2020-01-01 to 2020-01-05,
-			// the email should show 2020-01-01 to 2020-01-04.
-			$dtendDt->modify('-1 day');
-
-			//event that spans over multiple days
-			$localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
-			$localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
-
-			return $localeStart . ' - ' . $localeEnd;
-		}
-
-		/** @var Property\ICalendar\DateTime $dtstart */
-		/** @var Property\ICalendar\DateTime $dtend */
-		$isFloating = $dtstart->isFloating();
-		$startTimezone = $endTimezone = null;
-		if (!$isFloating) {
-			$prop = $dtstart->offsetGet('TZID');
-			if ($prop instanceof Parameter) {
-				$startTimezone = $prop->getValue();
-			}
-
-			$prop = $dtend->offsetGet('TZID');
-			if ($prop instanceof Parameter) {
-				$endTimezone = $prop->getValue();
-			}
-		}
-
-		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
-			$l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
-
-		// always show full date with timezone if timezones are different
-		if ($startTimezone !== $endTimezone) {
-			$localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
-
-			return $localeStart . ' (' . $startTimezone . ') - ' .
-				$localeEnd . ' (' . $endTimezone . ')';
-		}
-
-		// show only end time if date is the same
-		if ($this->isDayEqual($dtstartDt, $dtendDt)) {
-			$localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
-		} else {
-			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
-				$l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
-		}
-
-		return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
-	}
-
-	/**
-	 * @param \DateTime $dtStart
-	 * @param \DateTime $dtEnd
-	 * @return bool
-	 */
-	private function isDayEqual(\DateTime $dtStart, \DateTime $dtEnd) {
-		return $dtStart->format('Y-m-d') === $dtEnd->format('Y-m-d');
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param string $method
-	 * @param string $summary
-	 */
-	private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n,
-										  $method, $summary) {
-		if ($method === self::METHOD_CANCEL) {
-			// TRANSLATORS Subject for email, when an invitation is cancelled. Ex: "Cancelled: {{Event Name}}"
-			$template->setSubject($l10n->t('Cancelled: %1$s', [$summary]));
-			$template->addHeading($l10n->t('Invitation canceled'));
-		} elseif ($method === self::METHOD_REPLY) {
-			// TRANSLATORS Subject for email, when an invitation is updated. Ex: "Re: {{Event Name}}"
-			$template->setSubject($l10n->t('Re: %1$s', [$summary]));
-			$template->addHeading($l10n->t('Invitation updated'));
-		} else {
-			// TRANSLATORS Subject for email, when an invitation is sent. Ex: "Invitation: {{Event Name}}"
-			$template->setSubject($l10n->t('Invitation: %1$s', [$summary]));
-			$template->addHeading($l10n->t('Invitation'));
-		}
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param VEVENT $vevent
-	 */
-	private function addBulletList(IEMailTemplate $template, IL10N $l10n, $vevent) {
-		if ($vevent->SUMMARY) {
-			$template->addBodyListItem($vevent->SUMMARY, $l10n->t('Title:'),
-				$this->getAbsoluteImagePath('caldav/title.png'),'','',self::IMIP_INDENT);
-		}
-		$meetingWhen = $this->generateWhenString($l10n, $vevent);
-		if ($meetingWhen) {
-			$template->addBodyListItem($meetingWhen, $l10n->t('Time:'),
-				$this->getAbsoluteImagePath('caldav/time.png'),'','',self::IMIP_INDENT);
-		}
-		if ($vevent->LOCATION) {
-			$template->addBodyListItem($vevent->LOCATION, $l10n->t('Location:'),
-				$this->getAbsoluteImagePath('caldav/location.png'),'','',self::IMIP_INDENT);
-		}
-		if ($vevent->URL) {
-			$url = $vevent->URL->getValue();
-			$template->addBodyListItem(sprintf('<a href="%s">%s</a>',
-					htmlspecialchars($url),
-					htmlspecialchars($url)),
-				$l10n->t('Link:'),
-				$this->getAbsoluteImagePath('caldav/link.png'),
-				$url,'',self::IMIP_INDENT);
-		}
-
-		$this->addAttendees($template, $l10n, $vevent);
-
-		/* Put description last, like an email body, since it can be arbitrarily long */
-		if ($vevent->DESCRIPTION) {
-			$template->addBodyListItem($vevent->DESCRIPTION->getValue(), $l10n->t('Description:'),
-				$this->getAbsoluteImagePath('caldav/description.png'),'','',self::IMIP_INDENT);
-		}
-	}
-
-	/**
-	 * addAttendees: add organizer and attendee names/emails to iMip mail.
-	 *
-	 * Enable with DAV setting: invitation_list_attendees (default: no)
-	 *
-	 * The default is 'no', which matches old behavior, and is privacy preserving.
-	 *
-	 * To enable including attendees in invitation emails:
-	 *   % php occ config:app:set dav invitation_list_attendees --value yes
-	 *
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param Message $iTipMessage
-	 * @param int $lastOccurrence
-	 * @author brad2014 on github.com
-	 */
-
-	private function addAttendees(IEMailTemplate $template, IL10N $l10n, VEvent $vevent) {
-		if ($this->config->getAppValue('dav', 'invitation_list_attendees', 'no') === 'no') {
-			return;
-		}
-
-		if (isset($vevent->ORGANIZER)) {
-			/** @var Property\ICalendar\CalAddress $organizer */
-			$organizer = $vevent->ORGANIZER;
-			$organizerURI = $organizer->getNormalizedValue();
-			[$scheme,$organizerEmail] = explode(':',$organizerURI,2); # strip off scheme mailto:
-			/** @var string|null $organizerName */
-			$organizerName = isset($organizer['CN']) ? $organizer['CN'] : null;
-			$organizerHTML = sprintf('<a href="%s">%s</a>',
-				htmlspecialchars($organizerURI),
-				htmlspecialchars($organizerName ?: $organizerEmail));
-			$organizerText = sprintf('%s <%s>', $organizerName, $organizerEmail);
-			if (isset($organizer['PARTSTAT'])) {
-				/** @var Parameter $partstat */
-				$partstat = $organizer['PARTSTAT'];
-				if (strcasecmp($partstat->getValue(), 'ACCEPTED') === 0) {
-					$organizerHTML .= ' ✔︎';
-					$organizerText .= ' ✔︎';
-				}
-			}
-			$template->addBodyListItem($organizerHTML, $l10n->t('Organizer:'),
-				$this->getAbsoluteImagePath('caldav/organizer.png'),
-				$organizerText,'',self::IMIP_INDENT);
-		}
-
-		$attendees = $vevent->select('ATTENDEE');
-		if (count($attendees) === 0) {
-			return;
-		}
-
-		$attendeesHTML = [];
-		$attendeesText = [];
-		foreach ($attendees as $attendee) {
-			$attendeeURI = $attendee->getNormalizedValue();
-			[$scheme,$attendeeEmail] = explode(':',$attendeeURI,2); # strip off scheme mailto:
-			$attendeeName = isset($attendee['CN']) ? $attendee['CN'] : null;
-			$attendeeHTML = sprintf('<a href="%s">%s</a>',
-				htmlspecialchars($attendeeURI),
-				htmlspecialchars($attendeeName ?: $attendeeEmail));
-			$attendeeText = sprintf('%s <%s>', $attendeeName, $attendeeEmail);
-			if (isset($attendee['PARTSTAT'])
-				&& strcasecmp($attendee['PARTSTAT'], 'ACCEPTED') === 0) {
-				$attendeeHTML .= ' ✔︎';
-				$attendeeText .= ' ✔︎';
-			}
-			array_push($attendeesHTML, $attendeeHTML);
-			array_push($attendeesText, $attendeeText);
-		}
-
-		$template->addBodyListItem(implode('<br/>',$attendeesHTML), $l10n->t('Attendees:'),
-			$this->getAbsoluteImagePath('caldav/attendees.png'),
-			implode("\n",$attendeesText),'',self::IMIP_INDENT);
-	}
-
-	/**
-	 * @param IEMailTemplate $template
-	 * @param IL10N $l10n
-	 * @param Message $iTipMessage
-	 * @param int $lastOccurrence
-	 */
-	private function addResponseButtons(IEMailTemplate $template, IL10N $l10n,
-										Message $iTipMessage, $lastOccurrence) {
-		$token = $this->createInvitationToken($iTipMessage, $lastOccurrence);
-
-		$template->addBodyButtonGroup(
-			$l10n->t('Accept'),
-			$this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.accept', [
-				'token' => $token,
-			]),
-			$l10n->t('Decline'),
-			$this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.decline', [
-				'token' => $token,
-			])
-		);
-
-		$moreOptionsURL = $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.options', [
-			'token' => $token,
-		]);
-		$html = vsprintf('<small><a href="%s">%s</a></small>', [
-			$moreOptionsURL, $l10n->t('More options …')
-		]);
-		$text = $l10n->t('More options at %s', [$moreOptionsURL]);
-
-		$template->addBodyText($html, $text);
-	}
-
-	/**
-	 * @param string $path
-	 * @return string
-	 */
-	private function getAbsoluteImagePath($path) {
-		return $this->urlGenerator->getAbsoluteURL(
-			$this->urlGenerator->imagePath('core', $path)
-		);
-	}
-
-	/**
-	 * @param Message $iTipMessage
-	 * @param int $lastOccurrence
-	 * @return string
-	 */
-	private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
-		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
-
-		/** @var VEvent $vevent */
-		$vevent = $iTipMessage->message->VEVENT;
-		$attendee = $iTipMessage->recipient;
-		$organizer = $iTipMessage->sender;
-		$sequence = $iTipMessage->sequence;
-		$recurrenceId = isset($vevent->{'RECURRENCE-ID'}) ?
-			$vevent->{'RECURRENCE-ID'}->serialize() : null;
-		$uid = $vevent->{'UID'};
-
-		$query = $this->db->getQueryBuilder();
-		$query->insert('calendar_invitations')
-			->values([
-				'token' => $query->createNamedParameter($token),
-				'attendee' => $query->createNamedParameter($attendee),
-				'organizer' => $query->createNamedParameter($organizer),
-				'sequence' => $query->createNamedParameter($sequence),
-				'recurrenceid' => $query->createNamedParameter($recurrenceId),
-				'expiration' => $query->createNamedParameter($lastOccurrence),
-				'uid' => $query->createNamedParameter($uid)
-			])
-			->execute();
-
-		return $token;
-	}
+            $recipientDomain = substr(strrchr($recipient, "@"), 1);
+            $invitationLinkRecipients = explode(',', preg_replace('/\s+/', '', strtolower($this->config->getAppValue('dav', 'invitation_link_recipients', 'yes'))));
+
+            if (strcmp('yes', $invitationLinkRecipients[0]) === 0
+                 || in_array(strtolower($recipient), $invitationLinkRecipients)
+                 || in_array(strtolower($recipientDomain), $invitationLinkRecipients)) {
+                $this->addResponseButtons($template, $l10n, $iTipMessage, $lastOccurrence);
+            }
+        }
+
+        $template->addFooter();
+
+        $message->useTemplate($template);
+
+        $attachment = $this->mailer->createAttachment(
+            $iTipMessage->message->serialize(),
+            'event.ics',// TODO(leon): Make file name unique, e.g. add event id
+            'text/calendar; method=' . $iTipMessage->method
+        );
+        $message->attach($attachment);
+
+        try {
+            $failed = $this->mailer->send($message);
+            $iTipMessage->scheduleStatus = '1.1; Scheduling message is sent via iMip';
+            if ($failed) {
+                $this->logger->error('Unable to deliver message to {failed}', ['app' => 'dav', 'failed' => implode(', ', $failed)]);
+                $iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+            }
+        } catch (\Exception $ex) {
+            $this->logger->logException($ex, ['app' => 'dav']);
+            $iTipMessage->scheduleStatus = '5.0; EMail delivery failed';
+        }
+    }
+
+    /**
+     * check if event took place in the past already
+     * @param VCalendar $vObject
+     * @return int
+     */
+    private function getLastOccurrence(VCalendar $vObject) {
+        /** @var VEvent $component */
+        $component = $vObject->VEVENT;
+
+        $firstOccurrence = $component->DTSTART->getDateTime()->getTimeStamp();
+        // Finding the last occurrence is a bit harder
+        if (!isset($component->RRULE)) {
+            if (isset($component->DTEND)) {
+                $lastOccurrence = $component->DTEND->getDateTime()->getTimeStamp();
+            } elseif (isset($component->DURATION)) {
+                /** @var \DateTime $endDate */
+                $endDate = clone $component->DTSTART->getDateTime();
+                // $component->DTEND->getDateTime() returns DateTimeImmutable
+                $endDate = $endDate->add(DateTimeParser::parse($component->DURATION->getValue()));
+                $lastOccurrence = $endDate->getTimestamp();
+            } elseif (!$component->DTSTART->hasTime()) {
+                /** @var \DateTime $endDate */
+                $endDate = clone $component->DTSTART->getDateTime();
+                // $component->DTSTART->getDateTime() returns DateTimeImmutable
+                $endDate = $endDate->modify('+1 day');
+                $lastOccurrence = $endDate->getTimestamp();
+            } else {
+                $lastOccurrence = $firstOccurrence;
+            }
+        } else {
+            $it = new EventIterator($vObject, (string)$component->UID);
+            $maxDate = new \DateTime(self::MAX_DATE);
+            if ($it->isInfinite()) {
+                $lastOccurrence = $maxDate->getTimestamp();
+            } else {
+                $end = $it->getDtEnd();
+                while ($it->valid() && $end < $maxDate) {
+                    $end = $it->getDtEnd();
+                    $it->next();
+                }
+                $lastOccurrence = $end->getTimestamp();
+            }
+        }
+
+        return $lastOccurrence;
+    }
+
+    /**
+     * @param Message $iTipMessage
+     * @return null|Property
+     */
+    private function getCurrentAttendee(Message $iTipMessage) {
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+        $attendees = $vevent->select('ATTENDEE');
+        foreach ($attendees as $attendee) {
+            /** @var Property $attendee */
+            if (strcasecmp($attendee->getValue(), $iTipMessage->recipient) === 0) {
+                return $attendee;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @param string $default
+     * @param Property|null $attendee
+     * @return string
+     */
+    private function getAttendeeLangOrDefault($default, Property $attendee = null) {
+        if ($attendee !== null) {
+            $lang = $attendee->offsetGet('LANGUAGE');
+            if ($lang instanceof Parameter) {
+                return $lang->getValue();
+            }
+        }
+        return $default;
+    }
+
+    /**
+     * @param Property|null $attendee
+     * @return bool
+     */
+    private function getAttendeeRSVP(Property $attendee = null) {
+        if ($attendee !== null) {
+            $rsvp = $attendee->offsetGet('RSVP');
+            if (($rsvp instanceof Parameter) && (strcasecmp($rsvp->getValue(), 'TRUE') === 0)) {
+                return true;
+            }
+        }
+        // RFC 5545 3.2.17: default RSVP is false
+        return false;
+    }
+
+    /**
+     * @param IL10N $l10n
+     * @param VEvent $vevent
+     */
+    private function generateWhenString(IL10N $l10n, VEvent $vevent) {
+        $dtstart = $vevent->DTSTART;
+        if (isset($vevent->DTEND)) {
+            $dtend = $vevent->DTEND;
+        } elseif (isset($vevent->DURATION)) {
+            $isFloating = $vevent->DTSTART->isFloating();
+            $dtend = clone $vevent->DTSTART;
+            $endDateTime = $dtend->getDateTime();
+            $endDateTime = $endDateTime->add(DateTimeParser::parse($vevent->DURATION->getValue()));
+            $dtend->setDateTime($endDateTime, $isFloating);
+        } elseif (!$vevent->DTSTART->hasTime()) {
+            $isFloating = $vevent->DTSTART->isFloating();
+            $dtend = clone $vevent->DTSTART;
+            $endDateTime = $dtend->getDateTime();
+            $endDateTime = $endDateTime->modify('+1 day');
+            $dtend->setDateTime($endDateTime, $isFloating);
+        } else {
+            $dtend = clone $vevent->DTSTART;
+        }
+
+        $isAllDay = $dtstart instanceof Property\ICalendar\Date;
+
+        /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtstart */
+        /** @var Property\ICalendar\Date | Property\ICalendar\DateTime $dtend */
+        /** @var \DateTimeImmutable $dtstartDt */
+        $dtstartDt = $dtstart->getDateTime();
+        /** @var \DateTimeImmutable $dtendDt */
+        $dtendDt = $dtend->getDateTime();
+
+        $diff = $dtstartDt->diff($dtendDt);
+
+        $dtstartDt = new \DateTime($dtstartDt->format(\DateTimeInterface::ATOM));
+        $dtendDt = new \DateTime($dtendDt->format(\DateTimeInterface::ATOM));
+
+        if ($isAllDay) {
+            // One day event
+            if ($diff->days === 1) {
+                return $l10n->l('date', $dtstartDt, ['width' => 'medium']);
+            }
+
+            // DTEND is exclusive, so if the ics data says 2020-01-01 to 2020-01-05,
+            // the email should show 2020-01-01 to 2020-01-04.
+            $dtendDt->modify('-1 day');
+
+            //event that spans over multiple days
+            $localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
+            $localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
+
+            return $localeStart . ' - ' . $localeEnd;
+        }
+
+        /** @var Property\ICalendar\DateTime $dtstart */
+        /** @var Property\ICalendar\DateTime $dtend */
+        $isFloating = $dtstart->isFloating();
+        $startTimezone = $endTimezone = null;
+        if (!$isFloating) {
+            $prop = $dtstart->offsetGet('TZID');
+            if ($prop instanceof Parameter) {
+                $startTimezone = $prop->getValue();
+            }
+
+            $prop = $dtend->offsetGet('TZID');
+            if ($prop instanceof Parameter) {
+                $endTimezone = $prop->getValue();
+            }
+        }
+
+        $localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
+            $l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
+
+        // always show full date with timezone if timezones are different
+        if ($startTimezone !== $endTimezone) {
+            $localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
+
+            return $localeStart . ' (' . $startTimezone . ') - ' .
+                $localeEnd . ' (' . $endTimezone . ')';
+        }
+
+        // show only end time if date is the same
+        if ($this->isDayEqual($dtstartDt, $dtendDt)) {
+            $localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
+        } else {
+            $localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
+                $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
+        }
+
+        return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
+    }
+
+    /**
+     * @param \DateTime $dtStart
+     * @param \DateTime $dtEnd
+     * @return bool
+     */
+    private function isDayEqual(\DateTime $dtStart, \DateTime $dtEnd) {
+        return $dtStart->format('Y-m-d') === $dtEnd->format('Y-m-d');
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param string $method
+     * @param string $summary
+     */
+    private function addSubjectAndHeading(IEMailTemplate $template, IL10N $l10n,
+                                            $method, $summary) {
+        if ($method === self::METHOD_CANCEL) {
+            // TRANSLATORS Subject for email, when an invitation is cancelled. Ex: "Cancelled: {{Event Name}}"
+            $template->setSubject($l10n->t('Cancelled: %1$s', [$summary]));
+            $template->addHeading($l10n->t('Invitation canceled'));
+        } elseif ($method === self::METHOD_REPLY) {
+            // TRANSLATORS Subject for email, when an invitation is updated. Ex: "Re: {{Event Name}}"
+            $template->setSubject($l10n->t('Re: %1$s', [$summary]));
+            $template->addHeading($l10n->t('Invitation updated'));
+        } else {
+            // TRANSLATORS Subject for email, when an invitation is sent. Ex: "Invitation: {{Event Name}}"
+            $template->setSubject($l10n->t('Invitation: %1$s', [$summary]));
+            $template->addHeading($l10n->t('Invitation'));
+        }
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param VEVENT $vevent
+     */
+    private function addBulletList(IEMailTemplate $template, IL10N $l10n, $vevent) {
+        if ($vevent->SUMMARY) {
+            $template->addBodyListItem($vevent->SUMMARY, $l10n->t('Title:'),
+                $this->getAbsoluteImagePath('caldav/title.png'),'','',self::IMIP_INDENT);
+        }
+        $meetingWhen = $this->generateWhenString($l10n, $vevent);
+        if ($meetingWhen) {
+            $template->addBodyListItem($meetingWhen, $l10n->t('Time:'),
+                $this->getAbsoluteImagePath('caldav/time.png'),'','',self::IMIP_INDENT);
+        }
+        if ($vevent->LOCATION) {
+            $template->addBodyListItem($vevent->LOCATION, $l10n->t('Location:'),
+                $this->getAbsoluteImagePath('caldav/location.png'),'','',self::IMIP_INDENT);
+        }
+        if ($vevent->URL) {
+            $url = $vevent->URL->getValue();
+            $template->addBodyListItem(sprintf('<a href="%s">%s</a>',
+                    htmlspecialchars($url),
+                    htmlspecialchars($url)),
+                $l10n->t('Link:'),
+                $this->getAbsoluteImagePath('caldav/link.png'),
+                $url,'',self::IMIP_INDENT);
+        }
+
+        $this->addAttendees($template, $l10n, $vevent);
+
+        /* Put description last, like an email body, since it can be arbitrarily long */
+        if ($vevent->DESCRIPTION) {
+            $template->addBodyListItem($vevent->DESCRIPTION->getValue(), $l10n->t('Description:'),
+                $this->getAbsoluteImagePath('caldav/description.png'),'','',self::IMIP_INDENT);
+        }
+    }
+
+    /**
+     * addAttendees: add organizer and attendee names/emails to iMip mail.
+     *
+     * Enable with DAV setting: invitation_list_attendees (default: no)
+     *
+     * The default is 'no', which matches old behavior, and is privacy preserving.
+     *
+     * To enable including attendees in invitation emails:
+     *   % php occ config:app:set dav invitation_list_attendees --value yes
+     *
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param Message $iTipMessage
+     * @param int $lastOccurrence
+     * @author brad2014 on github.com
+     */
+
+    private function addAttendees(IEMailTemplate $template, IL10N $l10n, VEvent $vevent) {
+        if ($this->config->getAppValue('dav', 'invitation_list_attendees', 'no') === 'no') {
+            return;
+        }
+
+        if (isset($vevent->ORGANIZER)) {
+            /** @var Property\ICalendar\CalAddress $organizer */
+            $organizer = $vevent->ORGANIZER;
+            $organizerURI = $organizer->getNormalizedValue();
+            [$scheme,$organizerEmail] = explode(':',$organizerURI,2); # strip off scheme mailto:
+            /** @var string|null $organizerName */
+            $organizerName = isset($organizer['CN']) ? $organizer['CN'] : null;
+            $organizerHTML = sprintf('<a href="%s">%s</a>',
+                htmlspecialchars($organizerURI),
+                htmlspecialchars($organizerName ?: $organizerEmail));
+            $organizerText = sprintf('%s <%s>', $organizerName, $organizerEmail);
+            if (isset($organizer['PARTSTAT'])) {
+                /** @var Parameter $partstat */
+                $partstat = $organizer['PARTSTAT'];
+                if (strcasecmp($partstat->getValue(), 'ACCEPTED') === 0) {
+                    $organizerHTML .= ' ✔︎';
+                    $organizerText .= ' ✔︎';
+                }
+            }
+            $template->addBodyListItem($organizerHTML, $l10n->t('Organizer:'),
+                $this->getAbsoluteImagePath('caldav/organizer.png'),
+                $organizerText,'',self::IMIP_INDENT);
+        }
+
+        $attendees = $vevent->select('ATTENDEE');
+        if (count($attendees) === 0) {
+            return;
+        }
+
+        $attendeesHTML = [];
+        $attendeesText = [];
+        foreach ($attendees as $attendee) {
+            $attendeeURI = $attendee->getNormalizedValue();
+            [$scheme,$attendeeEmail] = explode(':',$attendeeURI,2); # strip off scheme mailto:
+            $attendeeName = isset($attendee['CN']) ? $attendee['CN'] : null;
+            $attendeeHTML = sprintf('<a href="%s">%s</a>',
+                htmlspecialchars($attendeeURI),
+                htmlspecialchars($attendeeName ?: $attendeeEmail));
+            $attendeeText = sprintf('%s <%s>', $attendeeName, $attendeeEmail);
+            if (isset($attendee['PARTSTAT'])
+                && strcasecmp($attendee['PARTSTAT'], 'ACCEPTED') === 0) {
+                $attendeeHTML .= ' ✔︎';
+                $attendeeText .= ' ✔︎';
+            }
+            array_push($attendeesHTML, $attendeeHTML);
+            array_push($attendeesText, $attendeeText);
+        }
+
+        $template->addBodyListItem(implode('<br/>',$attendeesHTML), $l10n->t('Attendees:'),
+            $this->getAbsoluteImagePath('caldav/attendees.png'),
+            implode("\n",$attendeesText),'',self::IMIP_INDENT);
+    }
+
+    /**
+     * @param IEMailTemplate $template
+     * @param IL10N $l10n
+     * @param Message $iTipMessage
+     * @param int $lastOccurrence
+     */
+    private function addResponseButtons(IEMailTemplate $template, IL10N $l10n,
+                                        Message $iTipMessage, $lastOccurrence) {
+        $token = $this->createInvitationToken($iTipMessage, $lastOccurrence);
+
+        $template->addBodyButtonGroup(
+            $l10n->t('Accept'),
+            $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.accept', [
+                'token' => $token,
+            ]),
+            $l10n->t('Decline'),
+            $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.decline', [
+                'token' => $token,
+            ])
+        );
+
+        $moreOptionsURL = $this->urlGenerator->linkToRouteAbsolute('dav.invitation_response.options', [
+            'token' => $token,
+        ]);
+        $html = vsprintf('<small><a href="%s">%s</a></small>', [
+            $moreOptionsURL, $l10n->t('More options …')
+        ]);
+        $text = $l10n->t('More options at %s', [$moreOptionsURL]);
+
+        $template->addBodyText($html, $text);
+    }
+
+    /**
+     * @param string $path
+     * @return string
+     */
+    private function getAbsoluteImagePath($path) {
+        return $this->urlGenerator->getAbsoluteURL(
+            $this->urlGenerator->imagePath('core', $path)
+        );
+    }
+
+    /**
+     * @param Message $iTipMessage
+     * @param int $lastOccurrence
+     * @return string
+     */
+    private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
+        $token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
+
+        /** @var VEvent $vevent */
+        $vevent = $iTipMessage->message->VEVENT;
+        $attendee = $iTipMessage->recipient;
+        $organizer = $iTipMessage->sender;
+        $sequence = $iTipMessage->sequence;
+        $recurrenceId = isset($vevent->{'RECURRENCE-ID'}) ?
+            $vevent->{'RECURRENCE-ID'}->serialize() : null;
+        $uid = $vevent->{'UID'};
+
+        $query = $this->db->getQueryBuilder();
+        $query->insert('calendar_invitations')
+            ->values([
+                'token' => $query->createNamedParameter($token),
+                'attendee' => $query->createNamedParameter($attendee),
+                'organizer' => $query->createNamedParameter($organizer),
+                'sequence' => $query->createNamedParameter($sequence),
+                'recurrenceid' => $query->createNamedParameter($recurrenceId),
+                'expiration' => $query->createNamedParameter($lastOccurrence),
+                'uid' => $query->createNamedParameter($uid)
+            ])
+            ->execute();
+
+        return $token;
+    }
 }

Spacing +26 added lines, -26 removed lines

@@ -229,11 +229,11 @@ 
 		}
 
 		$data = [
-			'attendee_name' => (string)$meetingAttendeeName ?: $defaultVal,
-			'invitee_name' => (string)$meetingInviteeName ?: $defaultVal,
-			'meeting_title' => (string)$meetingTitle ?: $defaultVal,
-			'meeting_description' => (string)$meetingDescription ?: $defaultVal,
-			'meeting_url' => (string)$meetingUrl ?: $defaultVal,
+			'attendee_name' => (string) $meetingAttendeeName ?: $defaultVal,
+			'invitee_name' => (string) $meetingInviteeName ?: $defaultVal,
+			'meeting_title' => (string) $meetingTitle ?: $defaultVal,
+			'meeting_description' => (string) $meetingDescription ?: $defaultVal,
+			'meeting_url' => (string) $meetingUrl ?: $defaultVal,
 		];
 
 		$fromEMail = Util::getDefaultEmailAddress('invitations-noreply');
@@ -247,7 +247,7 @@ 
 			$message->setReplyTo([$sender => $senderName]);
 		}
 
-		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.' . $method, $data);
+		$template = $this->mailer->createEMailTemplate('dav.calendarInvite.'.$method, $data);
 		$template->addHeader();
 
 		$summary = ((string) $summary !== '') ? (string) $summary : $l10n->t('Untitled event');
@@ -294,8 +294,8 @@ 
 
 		$attachment = $this->mailer->createAttachment(
 			$iTipMessage->message->serialize(),
-			'event.ics',// TODO(leon): Make file name unique, e.g. add event id
-			'text/calendar; method=' . $iTipMessage->method
+			'event.ics', // TODO(leon): Make file name unique, e.g. add event id
+			'text/calendar; method='.$iTipMessage->method
 		);
 		$message->attach($attachment);
 
@@ -342,7 +342,7 @@ 
 				$lastOccurrence = $firstOccurrence;
 			}
 		} else {
-			$it = new EventIterator($vObject, (string)$component->UID);
+			$it = new EventIterator($vObject, (string) $component->UID);
 			$maxDate = new \DateTime(self::MAX_DATE);
 			if ($it->isInfinite()) {
 				$lastOccurrence = $maxDate->getTimestamp();
@@ -458,7 +458,7 @@ 
 			$localeStart = $l10n->l('date', $dtstartDt, ['width' => 'medium']);
 			$localeEnd = $l10n->l('date', $dtendDt, ['width' => 'medium']);
 
-			return $localeStart . ' - ' . $localeEnd;
+			return $localeStart.' - '.$localeEnd;
 		}
 
 		/** @var Property\ICalendar\DateTime $dtstart */
@@ -477,26 +477,26 @@ 
 			}
 		}
 
-		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']) . ', ' .
+		$localeStart = $l10n->l('weekdayName', $dtstartDt, ['width' => 'abbreviated']).', '.
 			$l10n->l('datetime', $dtstartDt, ['width' => 'medium|short']);
 
 		// always show full date with timezone if timezones are different
 		if ($startTimezone !== $endTimezone) {
 			$localeEnd = $l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
 
-			return $localeStart . ' (' . $startTimezone . ') - ' .
-				$localeEnd . ' (' . $endTimezone . ')';
+			return $localeStart.' ('.$startTimezone.') - '.
+				$localeEnd.' ('.$endTimezone.')';
 		}
 
 		// show only end time if date is the same
 		if ($this->isDayEqual($dtstartDt, $dtendDt)) {
 			$localeEnd = $l10n->l('time', $dtendDt, ['width' => 'short']);
 		} else {
-			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']) . ', ' .
+			$localeEnd = $l10n->l('weekdayName', $dtendDt, ['width' => 'abbreviated']).', '.
 				$l10n->l('datetime', $dtendDt, ['width' => 'medium|short']);
 		}
 
-		return  $localeStart . ' - ' . $localeEnd . ' (' . $startTimezone . ')';
+		return  $localeStart.' - '.$localeEnd.' ('.$startTimezone.')';
 	}
 
 	/**
@@ -539,16 +539,16 @@ 
 	private function addBulletList(IEMailTemplate $template, IL10N $l10n, $vevent) {
 		if ($vevent->SUMMARY) {
 			$template->addBodyListItem($vevent->SUMMARY, $l10n->t('Title:'),
-				$this->getAbsoluteImagePath('caldav/title.png'),'','',self::IMIP_INDENT);
+				$this->getAbsoluteImagePath('caldav/title.png'), '', '', self::IMIP_INDENT);
 		}
 		$meetingWhen = $this->generateWhenString($l10n, $vevent);
 		if ($meetingWhen) {
 			$template->addBodyListItem($meetingWhen, $l10n->t('Time:'),
-				$this->getAbsoluteImagePath('caldav/time.png'),'','',self::IMIP_INDENT);
+				$this->getAbsoluteImagePath('caldav/time.png'), '', '', self::IMIP_INDENT);
 		}
 		if ($vevent->LOCATION) {
 			$template->addBodyListItem($vevent->LOCATION, $l10n->t('Location:'),
-				$this->getAbsoluteImagePath('caldav/location.png'),'','',self::IMIP_INDENT);
+				$this->getAbsoluteImagePath('caldav/location.png'), '', '', self::IMIP_INDENT);
 		}
 		if ($vevent->URL) {
 			$url = $vevent->URL->getValue();
@@ -557,7 +557,7 @@ 
 					htmlspecialchars($url)),
 				$l10n->t('Link:'),
 				$this->getAbsoluteImagePath('caldav/link.png'),
-				$url,'',self::IMIP_INDENT);
+				$url, '', self::IMIP_INDENT);
 		}
 
 		$this->addAttendees($template, $l10n, $vevent);
@@ -565,7 +565,7 @@ 
 		/* Put description last, like an email body, since it can be arbitrarily long */
 		if ($vevent->DESCRIPTION) {
 			$template->addBodyListItem($vevent->DESCRIPTION->getValue(), $l10n->t('Description:'),
-				$this->getAbsoluteImagePath('caldav/description.png'),'','',self::IMIP_INDENT);
+				$this->getAbsoluteImagePath('caldav/description.png'), '', '', self::IMIP_INDENT);
 		}
 	}
 
@@ -595,7 +595,7 @@ 
 			/** @var Property\ICalendar\CalAddress $organizer */
 			$organizer = $vevent->ORGANIZER;
 			$organizerURI = $organizer->getNormalizedValue();
-			[$scheme,$organizerEmail] = explode(':',$organizerURI,2); # strip off scheme mailto:
+			[$scheme, $organizerEmail] = explode(':', $organizerURI, 2); # strip off scheme mailto:
 			/** @var string|null $organizerName */
 			$organizerName = isset($organizer['CN']) ? $organizer['CN'] : null;
 			$organizerHTML = sprintf('<a href="%s">%s</a>',
@@ -612,7 +612,7 @@ 
 			}
 			$template->addBodyListItem($organizerHTML, $l10n->t('Organizer:'),
 				$this->getAbsoluteImagePath('caldav/organizer.png'),
-				$organizerText,'',self::IMIP_INDENT);
+				$organizerText, '', self::IMIP_INDENT);
 		}
 
 		$attendees = $vevent->select('ATTENDEE');
@@ -624,7 +624,7 @@ 
 		$attendeesText = [];
 		foreach ($attendees as $attendee) {
 			$attendeeURI = $attendee->getNormalizedValue();
-			[$scheme,$attendeeEmail] = explode(':',$attendeeURI,2); # strip off scheme mailto:
+			[$scheme, $attendeeEmail] = explode(':', $attendeeURI, 2); # strip off scheme mailto:
 			$attendeeName = isset($attendee['CN']) ? $attendee['CN'] : null;
 			$attendeeHTML = sprintf('<a href="%s">%s</a>',
 				htmlspecialchars($attendeeURI),
@@ -639,9 +639,9 @@ 
 			array_push($attendeesText, $attendeeText);
 		}
 
-		$template->addBodyListItem(implode('<br/>',$attendeesHTML), $l10n->t('Attendees:'),
+		$template->addBodyListItem(implode('<br/>', $attendeesHTML), $l10n->t('Attendees:'),
 			$this->getAbsoluteImagePath('caldav/attendees.png'),
-			implode("\n",$attendeesText),'',self::IMIP_INDENT);
+			implode("\n", $attendeesText), '', self::IMIP_INDENT);
 	}
 
 	/**
@@ -692,7 +692,7 @@ 
 	 * @return string
 	 */
 	private function createInvitationToken(Message $iTipMessage, $lastOccurrence):string {
-		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER . ISecureRandom::CHAR_LOWER . ISecureRandom::CHAR_DIGITS);
+		$token = $this->random->generate(60, ISecureRandom::CHAR_UPPER.ISecureRandom::CHAR_LOWER.ISecureRandom::CHAR_DIGITS);
 
 		/** @var VEvent $vevent */
 		$vevent = $iTipMessage->message->VEVENT;