analyzer.php

<?php
 
namespace Bitrix\Sale\Discount;
 
use Bitrix\Main\ErrorCollection;
use Bitrix\Sale\Internals\DiscountModuleTable;
use Bitrix\Sale\Internals\DiscountTable;
 
final class Analyzer
{
    protected $internalModules = array('sale', 'catalog', 'main');
    protected $errorCollection;
    private static $instance;
 
    public static function getInstance()
    {
        if (!isset(self::$instance))
        {
            self::$instance = new self;
        }
 
        return self::$instance;
    }
 
    private function __construct()
    {
        $this->errorCollection = new ErrorCollection();
    }
 
    private function __clone()
    {
    }
 
    public function isContainGiftAction(array $discount)
    {
        if(isset($discount['ACTIONS']) && is_string($discount['ACTIONS']))
        {
            return mb_strpos($discount['ACTIONS'], \CSaleActionGiftCtrlGroup::getControlID()) !== false;
        }
        elseif(isset($discount['ACTIONS_LIST']['CHILDREN']) && is_array($discount['ACTIONS_LIST']['CHILDREN']))
        {
            foreach($discount['ACTIONS_LIST']['CHILDREN'] as $child)
            {
                if(
                    isset($child['CLASS_ID']) && isset($child['DATA']) &&
                    $child['CLASS_ID'] === \CSaleActionGiftCtrlGroup::getControlID()
                )
                {
                    return true;
                }
            }
            unset($child);
        }
 
        return false;
    }
 
    public function canCalculateSeparately(array $discount)
    {
        if(
            !isset($discount['LAST_DISCOUNT']) ||
            !isset($discount['LAST_LEVEL_DISCOUNT']) ||
            !isset($discount['EXECUTE_MODULE'])
        )
        {
            return false;
        }
 
        if ($discount['EXECUTE_MODULE'] !== 'all' && $discount['EXECUTE_MODULE'] !== 'catalog')
        {
            return false;
        }
 
        if ($discount['LAST_DISCOUNT'] === 'Y' || $discount['LAST_LEVEL_DISCOUNT'] === 'Y')
        {
            return false;
        }
 
        $tryToFindAppliedCondition = $this->tryToFindAppliedCondition($discount);
        if ($tryToFindAppliedCondition === true || $tryToFindAppliedCondition === null)
        {
            return false;
        }
 
        if (!$this->emptyConditionsList($discount))
        {
            return false;
        }
 
        if (!$this->isExistOnlySaleDiscountAction($discount))
        {
            return false;
        }
 
        return true;
    }
 
    public function canCalculateSeparatelyAllDiscount()
    {
        $query = DiscountTable::query();
        $query->setSelect(array('ID'));
        $query->setFilter(array(
            '=ACTIVE' => 'Y',
            '!EXECUTE_MODE' => DiscountTable::EXECUTE_MODE_SEPARATELY,
        ));
        $query->setLimit(1);
 
        return !(bool)$query->exec()->fetch() && !$this->isThereCustomDiscountModules();
    }
 
    private function isThereCustomDiscountModules()
    {
        $query = DiscountModuleTable::query();
        $query->setSelect(array('ID'));
        $query->setFilter(array(
            '!@MODULE_ID' => $this->internalModules,
        ));
        $query->setLimit(1);
 
        return (bool)$query->exec()->fetch();
    }
 
    private function isExistOnlySaleDiscountAction(array $discount)
    {
        $actionStructure = $discount['ACTIONS_LIST'];
        if (!$actionStructure || !is_array($actionStructure))
        {
            return null;
        }
 
        if ($actionStructure['CLASS_ID'] != 'CondGroup')
        {
            return false;
        }
 
        if (count($actionStructure['CHILDREN']) > 1)
        {
            return false;
        }
 
        $action = reset($actionStructure['CHILDREN']);
        if ($action['CLASS_ID'] != 'ActSaleBsktGrp')
        {
            return false;
        }
 
        return true;
    }
 
    private function emptyConditionsList(array $discount)
    {
        if (empty($discount['CONDITIONS_LIST']) || !is_array($discount['CONDITIONS_LIST']))
        {
            return null;
        }
 
        if (empty($discount['CONDITIONS_LIST']['CHILDREN']))
        {
            return true;
        }
 
        return false;
    }
 
    private function tryToFindAppliedCondition(array $discount)
    {
        if (isset($discount['ACTIONS']) && is_string($discount['ACTIONS']))
        {
            return mb_strpos($discount['ACTIONS'], \CSaleActionCondCtrlBasketFields::CONTROL_ID_APPLIED_DISCOUNT) !== false;
        }
 
        if (isset($discount['ACTIONS_LIST']))
        {
            $asString = serialize($discount['ACTIONS_LIST']);
            if ($asString)
            {
                return mb_strpos($asString, \CSaleActionCondCtrlBasketFields::CONTROL_ID_APPLIED_DISCOUNT) !== false;
            }
        }
 
        //it means that there are not ACTIONS or ACTIONS_LIST. So, we can't solve this and decide, that we found condition.
        //after that this discount will be marked as EXECUTE_MODE=GENERAL
        return null;
    }
}