builder.php

<?php
 
namespace Bitrix\Sender\Search;
 
use Bitrix\Main\Entity;
 
class Builder
{
    private $entity;
 
    private $content;
 
    private $fieldName;
 
    public function __construct(Entity\Base $entity, $fieldName)
    {
        $this->entity = $entity;
        $this->fieldName = $fieldName;
    }
 
    public function isFullTextIndexEnabled()
    {
        return $this->entity->fullTextIndexEnabled($this->fieldName);
    }
 
    public function hasField()
    {
        return $this->entity->hasField($this->fieldName);
    }
 
    public function getContent()
    {
        if (!$this->content)
        {
            $this->content = new Content;
        }
 
        return $this->content;
    }
 
    public function isEnabled()
    {
        return $this->hasField() && $this->isFullTextIndexEnabled();
    }
 
    public function save($entityId)
    {
        $dataClass = $this->entity->getDataClass();
        return $dataClass::update(
            $entityId,
            array($this->fieldName => $this->content->getString())
        )->isSuccess();
    }
 
    public function applyFilter(array &$filter, $searchString)
    {
        if (!$searchString)
        {
            return false;
        }
        if (!$this->hasField())
        {
            return false;
        }
 
        $isFullTextEnabled = $this->isFullTextIndexEnabled();
        $operation = $isFullTextEnabled ? '*' : '*%';
        $filter["{$operation}{$this->fieldName}"] = Content::encodeText($searchString);
 
        return true;
    }
}