messageaccess.php

<?php
 
namespace Bitrix\Mail;
 
use Bitrix\Mail\Internals\MessageAccessTable;
use \Bitrix\Crm\ActivityTable;
 
class MessageAccess
{
    // supported entity types
    public const ENTITY_TYPE_IM_CHAT = MessageAccessTable::ENTITY_TYPE_IM_CHAT;
    public const ENTITY_TYPE_CALENDAR_EVENT = MessageAccessTable::ENTITY_TYPE_CALENDAR_EVENT;
 
    private $userId;
 
    private $message;
 
    private $storage;
 
    protected function __construct(int $userId, \Bitrix\Mail\Item\Message $message, IMessageAccessStorage $storage)
    {
        $this->userId = $userId;
        $this->message = $message;
        $this->storage = $storage;
    }
 
    public static function createForMessage(\Bitrix\Mail\Item\Message $message, int $userId): self
    {
        $storage = new \Bitrix\Mail\Storage\MessageAccess();
        return new self($userId, $message, $storage);
    }
 
    public static function createByMessageId(int $messageId, int $userId): self
    {
        $messageStorage = new \Bitrix\Mail\Storage\Message();
        $message = $messageStorage->getMessage($messageId);
        return self::createForMessage($message, $userId);
    }
 
    public static function createForCurrentUser($message): self
    {
        global $USER;
        $userId = $USER->GetID();
 
        if (!$userId)
        {
            throw new \Bitrix\Main\SystemException('message access: user id error');
        }
 
        return $message instanceof \Bitrix\Mail\Item\Message
            ? self::createForMessage($message, $userId)
            : self::createByMessageId((int)$message, $userId);
    }
 
    public function isOwner(): bool
    {
        return (bool)self::getUserMailbox($this->getMessage()->getMailboxId(), $this->getUserId());
    }
 
    public static function getCrmEntityOwner($activityId): array
    {
        return ActivityTable::getList([
            'select' => [
                'OWNER_ID',
                'OWNER_TYPE_ID',
            ],
            'filter' => [
                '==ID' => $activityId,
            ],
            'limit' => 1,
        ])->fetch();
    }
 
    public function getEntitiesForType($entityType): array
    {
        $collection = $this->getCollection($this->getMessage());
 
        $bindings = [];
 
        foreach ($collection as $item)
        {
            if ($item->getEntityType() === $entityType)
            {
                $bindings[] = $item->getEntityId();
            }
        }
 
        return $bindings;
    }
 
    public function canViewMessage(): bool
    {
        if ($this->isOwner())
        {
            return true;
        }
        
        $collection = $this->getCollection($this->getMessage());
 
        foreach ($collection as $item)
        {
            switch ($item->getEntityType())
            {
                case self::ENTITY_TYPE_IM_CHAT:
                    if (\Bitrix\Mail\Helper\MessageAccess::checkAccessForChat($item->getEntityId(), $this->getUserId()))
                    {
                        return true;
                    }
                    break;
                case self::ENTITY_TYPE_CALENDAR_EVENT:
                    if (\Bitrix\Mail\Helper\MessageAccess::checkAccessForCalendarEvent($item->getEntityId(), $this->getUserId()))
                    {
                        return true;
                    }
                    break;
            }
        }
 
        return false;
    }
 
    public function canModifyMessage(): bool
    {
        return $this->isOwner();
    }
 
    private function getMessage(): \Bitrix\Mail\Item\Message
    {
        return $this->message;
    }
 
    private function getUserId(): int
    {
        return $this->userId;
    }
 
    private function getStorage(): IMessageAccessStorage
    {
        return $this->storage;
    }
 
    private function getCollection(\Bitrix\Mail\Item\Message $item): \Bitrix\Mail\Collection\MessageAccess
    {
        return $this->getStorage()->getCollectionForMessage($item);
    }
 
    private static function getUserMailbox(int $mailboxId, int $userId)
    {
        return MailboxTable::getUserMailbox($mailboxId, $userId);
    }
 
}