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<?php

/**
 * Copyright © 2020 Wyomind. All rights reserved.
 * See LICENSE.txt for license details.
 */
/**
 * Copyright © 2020 Wyomind. All rights reserved.
 * See LICENSE.txt for license details.
 */
namespace Wyomind\MsiCustomAttributes\Model\ResourceModel;

use Wyomind\MsiCustomAttributes\Model\ResourceModel\CustomAttribute\CollectionFactory;
/**
 * Class Attributes
 * @package Wyomind\MsiCustomAttributes\Model\ResourceModel
 */
class CustomAttribute extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
{
    /**
     *
     */
    const MSI_CUSTOM_ATTRIBUTE = "msi_custom_attribute";
    /**
     * @var Attributes\CollectionFactory
     */
    protected $attributesCollectionFactory;
    /**
     * Attributes constructor.
     * @param \Magento\Framework\Model\ResourceModel\Db\Context $context
     * @param Attributes\CollectionFactory $attributesCollectionFactory
     * @param string|null $connectionName
     */
    public function __construct(\Magento\Framework\Model\ResourceModel\Db\Context $context, CollectionFactory $attributesCollectionFactory, string $connectionName = null)
    {
        $this->attributesCollectionFactory = $attributesCollectionFactory;
        parent::__construct($context, $connectionName);
    }
    /**
     *
     */
    protected function _construct()
    {
        $this->_init(self::MSI_CUSTOM_ATTRIBUTE, \Wyomind\MsiCustomAttributes\Api\Data\CustomAttributeInterface::ATTRIBUTE_ID);
    }
    /**
     * @param \Magento\Framework\Model\AbstractModel $attribute
     * @return \Magento\Framework\Model\ResourceModel\Db\AbstractDb
     * @throws \Exception
     */
    protected function _beforeSave(\Magento\Framework\Model\AbstractModel $attribute)
    {
        $disallowed = array_keys(\Wyomind\MsiCustomAttributes\Helper\CustomAttribute::RESERVED_ATTRIBUTE_CODES);
        if (!$attribute->getAttributeId()) {
            if (empty($attribute->getCode())) {
                $label = $attribute->getLabel();
                $code = preg_replace("/[^ a-z0-9_]+/", "", strtolower($label));
                $code = str_replace(" ", "_", $code);
                if (in_array($code, $disallowed)) {
                    throw new \Exception(__('The attribute code <i>%1</i> is reserved.', $code));
                }
                $attribute->setCode($code);
            }
            $collection = $this->attributesCollectionFactory->create()->getByCode($attribute->getCode());
            $collection->addFieldToFilter("attribute_id", ["neq" => $attribute->getId()]);
            if (count($collection) > 0) {
                throw new \Exception(__('An attribute with the same code already exists'));
            }
        }
        return parent::_beforeSave($attribute);
    }
}