<?php
/**
 * Copyright 2018 Adobe
 * All Rights Reserved.
 */
declare(strict_types=1);

namespace Magento\Catalog\Model\Product\Attribute\Backend\TierPrice;

use Magento\Framework\EntityManager\Operation\ExtensionInterface;
use Magento\Store\Model\StoreManagerInterface;
use Magento\Catalog\Api\ProductAttributeRepositoryInterface;
use Magento\Catalog\Api\Data\ProductInterface;
use Magento\Customer\Api\GroupManagementInterface;
use Magento\Framework\EntityManager\MetadataPool;
use Magento\Catalog\Model\ResourceModel\Product\Attribute\Backend\Tierprice;

/**
 * Tier price data abstract handler.
 */
abstract class AbstractHandler implements ExtensionInterface
{
    /**
     * @var \Magento\Customer\Api\GroupManagementInterface
     */
    protected $groupManagement;

    /**
     * @param \Magento\Customer\Api\GroupManagementInterface $groupManagement
     */
    public function __construct(
        GroupManagementInterface $groupManagement
    ) {
        $this->groupManagement = $groupManagement;
    }

    /**
     * Get additional tier price fields.
     *
     * @param array $objectArray
     * @return array
     */
    protected function getAdditionalFields(array $objectArray): array
    {
        $percentageValue = $this->getPercentage($objectArray);

        return [
            'value' => $percentageValue ? null : $objectArray['price'],
            'percentage_value' => $percentageValue ?: null,
        ];
    }

    /**
     * Check whether price has percentage value.
     *
     * @param array $priceRow
     * @return float|null
     */
    protected function getPercentage(array $priceRow): ?float
    {
        return isset($priceRow['percentage_value']) && is_numeric($priceRow['percentage_value'])
            ? (float)$priceRow['percentage_value']
            : null;
    }

    /**
     * Prepare tier price data by provided price row data.
     *
     * @param array $data
     * @return array
     * @throws \Magento\Framework\Exception\LocalizedException
     */
    protected function prepareTierPrice(array $data): array
    {
        $useForAllGroups = (int)$data['cust_group'] === $this->groupManagement->getAllCustomersGroup()->getId();
        $customerGroupId = $useForAllGroups ? 0 : $data['cust_group'];
        $tierPrice = array_merge(
            $this->getAdditionalFields($data),
            [
                'website_id' => $data['website_id'],
                'all_groups' => (int)$useForAllGroups,
                'customer_group_id' => $customerGroupId,
                'value' => $data['price'] ?? null,
                'qty' => $this->parseQty($data['price_qty']),
            ]
        );

        return $tierPrice;
    }

    /**
     * Parse quantity value into float.
     *
     * @param mixed $value
     * @return float|int
     */
    protected function parseQty($value)
    {
        return $value * 1;
    }
}
