sharingeventmanager.php

<?php
 
namespace Bitrix\Calendar\Sharing;
 
use Bitrix\Calendar\Core\Base\Result;
use Bitrix\Calendar\Core\Builders\EventBuilderFromArray;
use Bitrix\Calendar\Core\Event\Event;
use Bitrix\Calendar\Core\Event\Tools\Dictionary;
use Bitrix\Calendar\Core\Mappers;
use Bitrix\Calendar\Internals\EventTable;
use Bitrix\Calendar\Sharing;
use Bitrix\Calendar\Util;
use Bitrix\Crm;
use Bitrix\Main\Application;
use Bitrix\Main\ArgumentException;
use Bitrix\Main\Loader;
use Bitrix\Main\LoaderException;
use Bitrix\Main\PhoneNumber;
use Bitrix\Main\Error;
use Bitrix\Main\Localization\Loc;
use Bitrix\Main\Type\DateTime;
use CUser;
 
class SharingEventManager
{
    public const SHARED_EVENT_TYPE = Dictionary::EVENT_TYPE['shared'];
    public const SHARED_EVENT_CRM_TYPE = Dictionary::EVENT_TYPE['shared_crm'];
    private Event $event;
    private ?int $hostId;
    private ?int $ownerId;
    private ?Sharing\Link\Link $link;
 
    public function __construct(Event $event, ?int $hostId = null, ?int $ownerId = null, ?Sharing\Link\Link $link = null)
    {
        $this->event = $event;
        $this->hostId = $hostId;
        $this->ownerId = $ownerId;
        $this->link = $link;
    }
 
    public function setEvent(Event $event): self
    {
        $this->event = $event;
 
        return $this;
    }
 
    public function createEvent(bool $sendInvitations = true, string $externalUserName = ''): Result
    {
        $result = new Result();
 
        if (!$this->doesEventHasCorrectTime())
        {
            $result->addError(new Error(Loc::getMessage('EC_SHARINGAJAX_USER_BUSY')));
 
            return $result;
        }
 
        if (!$this->doesEventSatisfyRule())
        {
            $result->addError(new Error(Loc::getMessage('EC_SHARINGAJAX_USER_BUSY')));
 
            return $result;
        }
 
        $members = $this->link->getMembers();
        $users = array_merge([$this->link->getOwnerId()], array_map(static function ($member){
            return $member->getId();
        }, $members));
 
        if (!$this->checkUserAccessibility($users))
        {
            $result->addError(new Error(Loc::getMessage('EC_SHARINGAJAX_USER_BUSY')));
 
            return $result;
        }
 
        $eventId = (new Mappers\Event())->create($this->event, [
            'sendInvitations' => $sendInvitations
        ])->getId();
 
        $this->event->setId($eventId);
 
        if (!$eventId)
        {
            $result->addError(new Error(Loc::getMessage('EC_SHARINGAJAX_EVENT_SAVE_ERROR')));
 
            return $result;
        }
 
        $eventLinkParams = [
            'eventId' => $eventId,
            'ownerId' => $this->ownerId,
            'hostId' => $this->hostId,
            'parentLinkHash' => $this->link->getHash(),
            'expiryDate' => Helper::createSharingLinkExpireDate(
                DateTime::createFromTimestamp($this->event->getEnd()->getTimestamp()),
                Sharing\Link\Helper::EVENT_SHARING_TYPE
            ),
            'externalUserName' => $externalUserName,
        ];
 
        $eventLink = (new Sharing\Link\Factory())->createEventLink($eventLinkParams);
 
        $result->setData([
            'eventLink' => $eventLink,
            'event' => $this->event,
        ]);
 
        return $result;
    }
 
    public function deleteEvent(): Result
    {
        $result = new Result();
 
        (new Mappers\Event())->delete($this->event);
        $this->notifyEventDeleted();
 
        return $result;
    }
 
    public function deactivateEventLink(Sharing\Link\EventLink $eventLink): self
    {
        $eventLink
            ->setCanceledTimestamp(time())
            ->setActive(false)
        ;
 
        (new Sharing\Link\EventLinkMapper())->update($eventLink);
 
        return $this;
    }
 
    public static function validateContactData(string $userContact): bool
    {
        return self::isEmailCorrect($userContact)
            || self::isPhoneNumberCorrect($userContact)
            ;
    }
 
    public static function validateContactName(string $userName): bool
    {
        return self::isUserNameCorrect($userName);
    }
 
    private static function isUserNameCorrect(string $userName): bool
    {
        return $userName !== '';
    }
 
    public static function isEmailCorrect(string $userContact): bool
    {
        return check_email($userContact);
    }
 
    public static function isPhoneNumberCorrect(string $userContact): bool
    {
        return Helper::isPhoneFeatureEnabled()
            && PhoneNumber\Parser::getInstance()->parse($userContact)->isValid()
            ;
    }
 
    public static function prepareEventForSave($data, $userId, Sharing\Link\Joint\JointLink $link): Event
    {
        $ownerId = (int)($data['ownerId'] ?? null);
        $sectionId = self::getSectionId($userId);
 
        $attendeesCodes = ['U' . $userId, 'U' . $ownerId];
        $members = $link->getMembers();
        foreach ($members as $member)
        {
            $attendeesCodes[] = 'U' . $member->getId();
        }
 
        $meeting = [
            'HOST_NAME' => \CCalendar::GetUserName($userId),
            'NOTIFY' => true,
            'REINVITE' => false,
            'ALLOW_INVITE' => true,
            'MEETING_CREATOR' => $userId,
            'HIDE_GUESTS' => false,
        ];
 
        $eventData = [
            'OWNER_ID' => $userId,
            'NAME' => (string)($data['eventName'] ?? ''),
            'DATE_FROM' => (string)($data['dateFrom'] ?? ''),
            'DATE_TO' => (string)($data['dateTo'] ?? ''),
            'TZ_FROM' => (string)($data['timezone'] ?? ''),
            'TZ_TO' => (string)($data['timezone'] ?? ''),
            'SKIP_TIME' => 'N',
            'SECTIONS' => [$sectionId],
            'EVENT_TYPE' => $data['eventType'],
            'ACCESSIBILITY' => 'busy',
            'IMPORTANCE' => 'normal',
            'ATTENDEES_CODES' => $attendeesCodes,
            'MEETING_HOST' => $userId,
            'IS_MEETING' => true,
            'MEETING' => $meeting,
            'DESCRIPTION' => (string)($data['description'] ?? ''),
        ];
 
        return (new EventBuilderFromArray($eventData))->build();
    }
 
    public static function getEventDataFromRequest($request): array
    {
        return [
            'ownerId' => (int)($request['ownerId'] ?? 0),
            'dateFrom' => (string)($request['dateFrom'] ?? ''),
            'dateTo' => (string)($request['dateTo'] ?? ''),
            'timezone' => (string)($request['timezone'] ?? ''),
            'description' => (string)($request['description'] ?? ''),
            'eventType' => Dictionary::EVENT_TYPE['shared'],
        ];
    }
 
    public static function getSharingEventNameByUserId(int $userId): string
    {
        $user = CUser::GetByID($userId)->Fetch();
        $userName = ($user['NAME'] ?? '') . ' ' . ($user['LAST_NAME'] ?? '');
 
        return self::getSharingEventNameByUserName($userName);
    }
 
    public static function getSharingEventNameByUserName(?string $userName): string
    {
        if (!empty($userName))
        {
            $result = Loc::getMessage('CALENDAR_SHARING_EVENT_MANAGER_EVENT_NAME', [
                '#GUEST_NAME#' => trim($userName),
            ]);
        }
        else
        {
            $result = Loc::getMessage('CALENDAR_SHARING_EVENT_MANAGER_EVENT_NAME_WITHOUT_GUEST');
        }
 
        return $result;
    }
 
    public static function getCrmEventDataFromRequest($request): array
    {
        return [
            'ownerId' =>(int)($request['ownerId'] ?? 0),
            'dateFrom' => (string)($request['dateFrom'] ?? ''),
            'dateTo' => (string)($request['dateTo'] ?? ''),
            'timezone' => (string)($request['timezone'] ?? ''),
            'description' => (string)($request['description'] ?? ''),
            'eventType' => Dictionary::EVENT_TYPE['shared_crm'],
        ];
    }
 
    public static function getSharingEventTypes(): array
    {
        return [
            self::SHARED_EVENT_CRM_TYPE,
            self::SHARED_EVENT_TYPE,
        ];
    }
 
    public static function onSharingEventEdit(array $fields): void
    {
        $eventId = $fields['ID'];
        $eventLink = (new Sharing\Link\Factory())->getEventLinkByEventId($eventId);
        if ($eventLink instanceof Sharing\Link\EventLink)
        {
            self::updateEventSharingLink($eventLink, $fields);
        }
    }
 
    public static function setCanceledTimeOnSharedLink(int $eventId): void
    {
        $eventLink = (new Sharing\Link\Factory())->getEventLinkByEventId($eventId);
        if ($eventLink instanceof Sharing\Link\EventLink)
        {
            $eventLink->setCanceledTimestamp(time());
            (new Sharing\Link\EventLinkMapper())->update($eventLink);
        }
    }
 
    public static function onSharingEventMeetingStatusChange(
        int $userId,
        string $currentMeetingStatus,
        array $userEventBeforeChange,
        bool $isAutoAccept = false
    )
    {
        $eventLink = (new Sharing\Link\Factory())->getEventLinkByEventId((int)$userEventBeforeChange['PARENT_ID']);
 
        if (!$eventLink)
        {
            return;
        }
 
        $ownerId = $eventLink->getOwnerId();
        //if not the link owner's event has changed, send notification to link owner
        if ($ownerId !== $userId && !$isAutoAccept)
        {
            self::onSharingEventGuestStatusChange($currentMeetingStatus, $userEventBeforeChange, $eventLink, $userId);
        }
        else if ($userEventBeforeChange['EVENT_TYPE'] === Dictionary::EVENT_TYPE['shared'])
        {
            self::onSharingCommonEventMeetingStatusChange($eventLink);
        }
        else if ($userEventBeforeChange['EVENT_TYPE'] === Dictionary::EVENT_TYPE['shared_crm'])
        {
            self::onSharingCrmEventStatusChange($currentMeetingStatus, $userEventBeforeChange, $userId, $ownerId);
        }
    }
 
    private static function onSharingEventGuestStatusChange(
        string $currentMeetingStatus,
        array $event,
        Sharing\Link\EventLink $eventLink,
        int $userId
    ): void
    {
        \CCalendarNotify::Send([
            'mode' => $currentMeetingStatus === "Y" ? 'accept' : 'decline',
            'name' => $event['NAME'],
            'from' => $event["DATE_FROM"],
            'to' => $event["DATE_TO"],
            'location' => \CCalendar::GetTextLocation($userEvent["LOCATION"] ?? null),
            'guestId' => $userId,
            'eventId' => $event['PARENT_ID'],
            'userId' => $eventLink->getOwnerId(),
            'fields' => $event
        ]);
    }
 
    private static function onSharingCommonEventMeetingStatusChange(Sharing\Link\EventLink $eventLink): void
    {
        $event = (new Mappers\Event())->getById($eventLink->getEventId());
 
        $host = CUser::GetByID($eventLink->getHostId())->Fetch();
        $email = $host['PERSONAL_MAILBOX'] ?? null;
        $phone = $host['PERSONAL_PHONE'] ?? null;
        $userContact = !empty($email) ? $email : $phone;
 
        $notificationService = null;
        if ($userContact && self::isEmailCorrect($userContact))
        {
            $notificationService = (new Sharing\Notification\Mail())
                ->setEventLink($eventLink)
                ->setEvent($event)
            ;
        }
 
        $notificationService?->notifyAboutMeetingStatus($userContact);
    }
 
    private static function onSharingCrmEventStatusChange(
        string $currentMeetingStatus,
        array $userEventBeforeChange,
        int $userId,
        int $ownerId
    ): void
    {
        if (!Loader::includeModule('crm'))
        {
            return;
        }
 
        $previousMeetingStatus = $userEventBeforeChange['MEETING_STATUS'] ?? null;
 
        if (
            $currentMeetingStatus === Dictionary::MEETING_STATUS['Yes']
            && $previousMeetingStatus === Dictionary::MEETING_STATUS['Question']
            && $userId === $ownerId
        )
        {
            self::onSharingCrmEventConfirmed(
                (int)$userEventBeforeChange['PARENT_ID'],
                $userEventBeforeChange['DATE_FROM'] ?? null,
                $userEventBeforeChange['TZ_FROM'] ?? null,
            );
        }
 
        if (
            $currentMeetingStatus === Dictionary::MEETING_STATUS['No']
            && (
                $previousMeetingStatus === Dictionary::MEETING_STATUS['Question']
                || $previousMeetingStatus === Dictionary::MEETING_STATUS['Yes']
            )
        )
        {
            self::onSharingCrmEventDeclined((int)$userEventBeforeChange['PARENT_ID']);
        }
    }
 
    private static function onSharingCrmEventConfirmed(int $eventId, ?string $dateFrom, ?string $timezone): void
    {
        $crmDealLink = self::getCrmDealLink($eventId);
 
        $activity = \CCrmActivity::GetByCalendarEventId($eventId, false);
 
        if ($crmDealLink && $activity)
        {
            (new Sharing\Crm\NotifyManager($crmDealLink, Sharing\Crm\NotifyManager::NOTIFY_TYPE_EVENT_CONFIRMED))
                ->sendSharedCrmActionsEvent(
                    Util::getDateTimestamp($dateFrom, $timezone),
                    $activity['ID'],
                    \CCrmOwnerType::Activity,
                )
            ;
        }
    }
 
    private static function onSharingCrmEventDeclined(int $eventId): void
    {
        $sharingFactory = new Sharing\Link\Factory();
 
        $eventLink = $sharingFactory->getEventLinkByEventId($eventId);
 
        $crmDealLink = $sharingFactory->getLinkByHash($eventLink->getParentLinkHash());
 
        $event = (new Mappers\Event())->getById($eventId);
 
        $completeActivityStatus = Sharing\Crm\ActivityManager::STATUS_CANCELED_BY_MANAGER;
 
        $userId = \CCalendar::GetUserId();
        if ($userId === 0 || $userId === $event->getEventHost()->getId())
        {
            $completeActivityStatus = Sharing\Crm\ActivityManager::STATUS_CANCELED_BY_CLIENT;
        }
 
        (new Sharing\Crm\ActivityManager($eventId))
            ->completeSharedCrmActivity($completeActivityStatus)
        ;
        self::setCanceledTimeOnSharedLink($eventId);
        if ($crmDealLink->getContactId() > 0)
        {
            Crm\Integration\Calendar\Notification\Manager::getSenderInstance($crmDealLink)
                ->setCrmDealLink($crmDealLink)
                ->setEventLink($eventLink)
                ->setEvent($event)
                ->sendCrmSharingCancelled()
            ;
        }
        else
        {
            $email = CUser::GetByID($eventLink->getHostId())->Fetch()['PERSONAL_MAILBOX'] ?? null;
            if (!is_string($email))
            {
                return;
            }
 
            $eventLink->setCanceledTimestamp(time());
            (new Sharing\Notification\Mail())
                ->setEventLink($eventLink)
                ->setEvent($event)
                ->notifyAboutMeetingCancelled($email)
            ;
        }
 
        self::reSaveEventWithoutAttendeesExceptHostAndSharingLinkOwner($eventLink);
    }
 
    public static function onSharingEventEdited(int $eventId, array $previousFields): void
    {
        $event = (new Mappers\Event())->getById($eventId);
        if ($event instanceof Event)
        {
            $oldEvent = Event::fromBuilder(new EventBuilderFromArray($previousFields));
            if ($event->getSpecialLabel() === Dictionary::EVENT_TYPE['shared'])
            {
                self::onSharingCommonEventEdited($event, $oldEvent);
            }
            else if ($event->getSpecialLabel() === Dictionary::EVENT_TYPE['shared_crm'])
            {
                self::onSharingCrmEventEdited($event, $oldEvent);
            }
        }
    }
 
    private static function onSharingCommonEventEdited(Event $event, Event $oldEvent): void
    {
        $sharingFactory = new Sharing\Link\Factory();
 
        $eventLink = $sharingFactory->getEventLinkByEventId($event->getId());
 
        //TODO remove if not needed
//      /** @var Sharing\Link\UserLink $crmDealLink */
//      $userLink = $sharingFactory->getLinkByHash($eventLink->getParentLinkHash());
 
        $host = CUser::GetByID($eventLink->getHostId())->Fetch();
        $email = $host['PERSONAL_MAILBOX'] ?? null;
        $phone = $host['PERSONAL_PHONE'] ?? null;
        $userContact = !empty($email) ? $email : $phone;
 
        $notificationService = null;
        if ($userContact && self::isEmailCorrect($userContact))
        {
            $notificationService = (new Sharing\Notification\Mail())
                ->setEventLink($eventLink)
                ->setEvent($event)
                ->setOldEvent($oldEvent)
            ;
        }
 
        if ($notificationService !== null)
        {
            $notificationService->notifyAboutSharingEventEdit($userContact);
        }
    }
 
    private static function onSharingCrmEventEdited(Event $event, Event $oldEvent): void
    {
        if (!Loader::includeModule('crm'))
        {
            return;
        }
 
        (new Sharing\Crm\ActivityManager($event->getId()))
            ->editActivityDeadline(DateTime::createFromUserTime($event->getStart()->toString()))
        ;
 
        $sharingFactory = new Sharing\Link\Factory();
 
        $eventLink = $sharingFactory->getEventLinkByEventId($event->getId());
        if (!$eventLink instanceof Sharing\Link\EventLink)
        {
            return;
        }
 
        $crmDealLink = $sharingFactory->getLinkByHash($eventLink->getParentLinkHash());
        if (!$crmDealLink instanceof Sharing\Link\CrmDealLink)
        {
            return;
        }
 
        if ($crmDealLink->getContactId() > 0)
        {
            Crm\Integration\Calendar\Notification\Manager::getSenderInstance($crmDealLink)
                ->setCrmDealLink($crmDealLink)
                ->setEventLink($eventLink)
                ->setEvent($event)
                ->setOldEvent($oldEvent)
                ->sendCrmSharingEdited()
            ;
        }
        else
        {
            $email = CUser::GetByID($eventLink->getHostId())->Fetch()['PERSONAL_MAILBOX'] ?? null;
            if (!is_string($email))
            {
                return;
            }
 
            (new Sharing\Notification\Mail())
                ->setEventLink($eventLink)
                ->setEvent($event)
                ->setOldEvent($oldEvent)
                ->notifyAboutSharingEventEdit($email)
            ;
        }
    }
 
    public static function onSharingEventDeleted(int $eventId, string $eventType): void
    {
        $eventLink = (new Sharing\Link\Factory())->getEventLinkByEventId($eventId);
        if ($eventLink)
        {
            self::setDeclinedStatusOnLinkOwnerEvent($eventLink);
 
            if ($eventType === Dictionary::EVENT_TYPE['shared'])
            {
                self::onSharingCommonEventDeclined($eventLink);
            }
            else if ($eventType === Dictionary::EVENT_TYPE['shared_crm'])
            {
                self::onSharingCrmEventDeclined($eventId);
            }
 
        }
    }
 
    public static function onSharingCommonEventDeclined(Sharing\Link\EventLink $eventLink)
    {
        self::setCanceledTimeOnSharedLink($eventLink->getEventId());
        $event = (new Mappers\Event())->getById($eventLink->getEventId());
 
        $host = CUser::GetByID($eventLink->getHostId())->Fetch();
        $email = $host['PERSONAL_MAILBOX'] ?? null;
        $phone = $host['PERSONAL_PHONE'] ?? null;
        $userContact = !empty($email) ? $email : $phone;
 
        $notificationService = null;
        if ($userContact && self::isEmailCorrect($userContact))
        {
            $notificationService = (new Sharing\Notification\Mail())
                ->setEventLink($eventLink)
                ->setEvent($event)
            ;
        }
 
        if ($notificationService !== null)
        {
            $notificationService->notifyAboutMeetingCancelled($userContact);
        }
    }
 
    public static function setDeclinedStatusOnLinkOwnerEvent(Sharing\Link\EventLink $eventLink)
    {
        $userId = \CCalendar::GetUserId();
        if ($userId !== 0 && $userId !== $eventLink->getHostId())
        {
            $ownerId = $eventLink->getOwnerId();
            $event = EventTable::query()
                ->setSelect(['ID'])
                ->where('PARENT_ID', $eventLink->getEventId())
                ->whereIn('EVENT_TYPE', self::getSharingEventTypes())
                ->where('OWNER_ID', $ownerId)
                ->exec()
                ->fetch()
            ;
            if ($event['ID'] ?? false)
            {
                EventTable::update((int)$event['ID'], ['MEETING_STATUS' => Dictionary::MEETING_STATUS['No']]);
            }
        }
    }
 
    private static function updateEventSharingLink(Sharing\Link\EventLink $eventLink, array $fields): void
    {
        if (!empty($fields['DATE_TO']))
        {
            $expireDate = Helper::createSharingLinkExpireDate(
                DateTime::createFromText($fields['DATE_TO']),
                Sharing\Link\Helper::EVENT_SHARING_TYPE
            );
            $eventLink->setDateExpire($expireDate);
        }
 
        (new Sharing\Link\EventLinkMapper())->update($eventLink);
    }
 
    private static function getCrmDealLink(int $eventId): ?Link\CrmDealLink
    {
        $sharingLinkFactory = new Sharing\Link\Factory();
        $eventLink = $sharingLinkFactory->getEventLinkByEventId($eventId);
        if ($eventLink instanceof Sharing\Link\EventLink)
        {
            $crmDealLink = $sharingLinkFactory->getLinkByHash($eventLink->getParentLinkHash());
            if ($crmDealLink instanceof Sharing\Link\CrmDealLink)
            {
                return $crmDealLink;
            }
        }
 
        return null;
    }
 
    private function doesEventHasCorrectTime(): bool
    {
        $start = new DateTime($this->event->getStart()->toString());
        $end = new DateTime($this->event->getEnd()->toString());
 
        $offset = Util::getTimezoneOffsetUTC(\CCalendar::GetUserTimezoneName($this->ownerId));
        $fromTs = Util::getDateTimestampUtc($start, $this->event->getStartTimeZone());
        $toTs = Util::getDateTimestampUtc($end, $this->event->getEndTimeZone());
 
        if ($fromTs < time())
        {
            return false;
        }
 
        $ownerDate = new \DateTime('now', new \DateTimeZone('UTC'));
 
        $holidays = $this->getYearHolidays();
        $intersectedHolidays = array_filter($holidays, static fn($holiday) => in_array($holiday, [
            $ownerDate->setTimestamp($fromTs + $offset)->format('j.m'),
            $ownerDate->setTimestamp($toTs + $offset)->format('j.m'),
        ], true));
 
        if (!empty($intersectedHolidays))
        {
            return false;
        }
 
        return true;
    }
 
    private function getYearHolidays(): array
    {
        return explode(',', \COption::GetOptionString('calendar', 'year_holidays', Loc::getMessage('EC_YEAR_HOLIDAYS_DEFAULT')));
    }
 
    private function doesEventSatisfyRule(): bool
    {
        $start = new DateTime($this->event->getStart()->toString());
        $end = new DateTime($this->event->getEnd()->toString());
        $fromTs = Util::getDateTimestampUtc($start, $this->event->getStartTimeZone());
        $toTs = Util::getDateTimestampUtc($end, $this->event->getEndTimeZone());
 
        $rule = $this->link->getSharingRule();
        $eventDurationMinutes = ($toTs - $fromTs) / 60;
        if ($eventDurationMinutes !== $rule->getSlotSize())
        {
            return false;
        }
 
        $availableTime = [];
        foreach ($rule->getRanges() as $range)
        {
            foreach ($range->getWeekdays() as $weekday)
            {
                $availableTime[$weekday] ??= [];
                $availableTime[$weekday][] = [
                    'from' => $range->getFrom(),
                    'to' => $range->getTo(),
                ];
 
                [$intersected, $notIntersected] = $this->separate(fn($interval) => Util::doIntervalsIntersect(
                    $interval['from'],
                    $interval['to'],
                    $range->getFrom(),
                    $range->getTo(),
                ), $availableTime[$weekday]);
 
                if (!empty($intersected))
                {
                    $from = min(array_column($intersected, 'from'));
                    $to = max(array_column($intersected, 'to'));
 
                    $availableTime[$weekday] = [...$notIntersected, [
                        'from' => $from,
                        'to' => $to,
                    ]];
                }
            }
        }
 
        $offset = Util::getTimezoneOffsetUTC(\CCalendar::GetUserTimezoneName($this->ownerId)) / 60;
        $minutesFrom = ($fromTs % 86400) / 60;
        $minutesTo = ($toTs % 86400) / 60;
        $weekday = (int)gmdate('N', $fromTs) % 7;
        foreach ($availableTime[$weekday] as $range)
        {
            if ($minutesFrom >= $range['from'] - $offset && $minutesTo <= $range['to'] - $offset)
            {
                return true;
            }
        }
 
        return false;
    }
 
    private function separate($take, $array): array
    {
        return array_reduce($array, fn($s, $e) => $take($e) ? [[...$s[0], $e], $s[1]] : [$s[0], [...$s[1], $e]], [[], []]);
    }
 
    private function checkUserAccessibility(array $userIds): bool
    {
        $start = new DateTime($this->event->getStart()->toString());
        $end = new DateTime($this->event->getEnd()->toString());
        $fromTs = Util::getDateTimestampUtc($start, $this->event->getStartTimeZone());
        $toTs = Util::getDateTimestampUtc($end, $this->event->getEndTimeZone());
 
        return (new SharingAccessibilityManager([
            'userIds' => $userIds,
            'timestampFrom' => $fromTs,
            'timestampTo' => $toTs,
        ]))->checkUsersAccessibility();
    }
 
    private static function getSectionId($userId)
    {
        $result = \CCalendarSect::GetList([
            'arFilter' => [
                'OWNER_ID' => $userId,
                'CAL_TYPE' => 'user',
                'ACTIVE' => 'Y'
            ]
        ]);
 
        if (!$result)
        {
            $createdSection = \CCalendarSect::CreateDefault([
                'type' => 'user',
                'ownerId' => $userId,
            ]);
            $result[] = $createdSection;
        }
 
        return $result[0]['ID'];
    }
 
    private function notifyEventDeleted()
    {
        return \CCalendarNotify::Send([
            'mode' => 'cancel_sharing',
            'userId' => $this->hostId,
            'guestId' => $this->ownerId,
            'eventId' => $this->event->getId(),
            'from' => $this->event->getStart()->toString(),
            'to' => $this->event->getEnd()->toString(),
            'name' => $this->event->getName(),
            'isSharing' => true,
        ]);
    }
 
    public static function reSaveEventWithoutAttendeesExceptHostAndSharingLinkOwner(Sharing\Link\EventLink $eventLink): void
    {
        $event = (new Mappers\Event)->getById($eventLink->getEventId());
        if ($event)
        {
            $event = \CCalendarEvent::GetList([
                'arFilter' => [
                    'ID' => $event->getId(),
                ],
                'fetchAttendees' => true,
                'checkPermissions' => false,
                'parseRecursion' => false,
                'setDefaultLimit' => false,
                'limit' => null,
            ]);
 
            $event = $event[0] ?? null;
            if ($event)
            {
                $event['ATTENDEES'] = [$eventLink->getOwnerId(), $eventLink->getHostId()];
                \CCalendar::SaveEvent([
                    'arFields' => $event,
                    'userId' => $eventLink->getOwnerId(),
                    'checkPermission' => false,
                    'sendInvitations' => true
                ]);
            }
        }
    }
}