SoftDeletionStrategy.php

См. документацию.

<?php
 
namespace Bitrix\Im\V2\Message\Delete\Strategy;
 
use Bitrix\Im\V2\Chat\ChatError;
use Bitrix\Im\V2\Chat\NullChat;
use Bitrix\Im\V2\Message;
use Bitrix\Im\V2\Result;
use Bitrix\Im\V2\Sync\Event;
use Bitrix\Main\Localization\Loc;
 
class SoftDeletionStrategy extends DeletionStrategy
{
    protected function execute(): void
    {
        $result = $this->messages->save();
        $this->checkResult($result);
    }

    protected function onBeforeDelete(): void
    {
        if ($this->chat instanceof NullChat)
        {
            throw new InterruptedExecutionException(
                (new Result())->addError(new ChatError(ChatError::NOT_FOUND))
            );
        }
 
        $this->messages->fillFiles();
 
        foreach ($this->messages as $message)
        {
            $message->setMessage(Loc::getMessage('IM_MESSAGE_DELETED'));
            $message->setMessageOut($this->getMessageOut($message));
        }
 
        $this->messages->resetParams([
            'IS_DELETED' => 'Y',
        ]);
    }
 
    protected function onAfterDelete(): void
    {
        $this->logToSync(Event::DELETE_EVENT);
        $this->deleteFiles();
    }
 
    private function getMessageOut(Message $message): string
    {
        $date = $message->getDateCreate()?->toString();
 
        return Loc::getMessage('IM_MESSAGE_DELETED_OUT', ['#DATE#' => $date]) ?? '';
    }
}