<?php
declare(strict_types=1);

namespace Esun\Oceanpayment\Model\Gateway;

use Magento\Framework\Exception\LocalizedException;

class ResponseParser
{
    private const FIELDS = [
        'account',
        'terminal',
        'signValue',
        'order_number',
        'order_currency',
        'order_amount',
        'order_notes',
        'payment_id',
        'pay_url',
        'pay_results',
        'pay_details',
    ];

    public function parse(string $body): array
    {
        $previous = libxml_use_internal_errors(true);
        try {
            $xml = simplexml_load_string($body, \SimpleXMLElement::class, LIBXML_NONET | LIBXML_NOCDATA);
        } finally {
            libxml_clear_errors();
            libxml_use_internal_errors($previous);
        }

        if ($xml === false) {
            throw new LocalizedException(__('Oceanpayment returned an invalid XML response.'));
        }

        $result = [];
        foreach (self::FIELDS as $field) {
            $result[$field] = isset($xml->{$field}) ? trim((string)$xml->{$field}) : '';
        }

        return $result;
    }
}