<?php
declare(strict_types=1);

namespace Esun\Reward\Model\Config\Backend;

use Magento\Config\Model\Config\Backend\Serialized\ArraySerialized;
use Magento\Config\Model\ResourceModel\Config\Data as ConfigResource;
use Magento\Config\Model\ResourceModel\Config\Data\Collection as ConfigCollection;

class EarningRuleItems extends ArraySerialized
{
    protected function _construct(): void
    {
        $this->_setResourceModel(ConfigResource::class, ConfigCollection::class);
    }

    public function beforeSave()
    {
        $items = [];
        $allowedCodes = [
            'registration', 'first_shipping_address', 'order_earned',
            'review_text', 'review_media', 'social_share',
        ];
        $value = $this->getValue();
        if (is_array($value)) {
            unset($value['__empty']);
            foreach ($value as $row) {
                if (!is_array($row)) {
                    continue;
                }
                $code = strtolower(trim((string)($row['code'] ?? '')));
                $points = max(0.0, (float)($row['points'] ?? 0));
                $name = trim((string)($row['name'] ?? ''));
                $reason = trim((string)($row['reason'] ?? ''));
                if (!in_array($code, $allowedCodes, true) || $name === '') {
                    continue;
                }
                $items[$code] = ['code' => $code, 'points' => $points, 'name' => $name, 'reason' => $reason];
            }
        }
        $this->setValue(array_values($items));
        return parent::beforeSave();
    }
}