<?php
/**
 * For the full copyright and license information, please view the
 * docs/licenses/LICENSE.txt file that was distributed with this source code.
 */

/**
 * Class AddressChecksumCore.
 */
class AddressChecksumCore implements ChecksumInterface
{
    public const SEPARATOR = '_';

    /**
     * Generate a checksum.
     *
     * @param Address $address
     *
     * @return string SHA1 checksum for the Address
     */
    public function generateChecksum($address)
    {
        if (!$address->id) {
            return sha1('No address set');
        }

        $uniqId = '';

        try {
            $fields = $address->getFields();
        } catch (Exception $e) {
            return sha1('Invalid address');
        }

        foreach ($fields as $name => $value) {
            $uniqId .= $value . self::SEPARATOR;
        }
        $uniqId = rtrim($uniqId, self::SEPARATOR);

        return sha1($uniqId);
    }
}