battles/classes/Battles/RememberPassword.php

<?php

namespace Battles;

use tidy, Battles\Database\Db;

class RememberPassword
{
    const OK_MAIL_SENT = 'Письмо отправлено!';
    const OK_PASSWORD_CHANGED = 'Пароль изменён!';
    const ERROR_MAIL_NOT_SENT = 'Письмо не отправлено!';
    const ERROR_WRONG_LOGIN = 'Такого пользователя не существует!';
    const ERROR_TOO_MANY_TRIES = 'Вы уже отправляли себе письмо сегодня!';
    const ERROR_OLD_HASH = 'Ссылка устарела!';
    const ERROR_WRONG_HASH = 'Неверная ссылка!';

    private function mailSend(string $to, string $message): bool
    {
        $from = "=?UTF-8?B?" . base64_encode('Noreply') . "?= <noreply@" . GAMEDOMAIN . ">";
        $subject = "=?UTF-8?B?" . base64_encode('Восстановление забытого пароля') . "?=";
        $headers = [
            'From' => $from,
            'MIME-Version' => '1.0',
            'Content-type' => 'text/html; charset=UTF-8',
        ];

        if (extension_loaded('tidy')) {
            $cleaner = new tidy();
            $message = $cleaner->repairString($message, ['show-errors' => 0, 'show-warnings' => false], 'utf8');
        }
        return mail($to, $subject, $message, $headers);
    }

    public function sendRecoveryMail(string $to): string
    {
        $check = Db::getInstance()->ofetch('SELECT email FROM users WHERE login = ?', $to);
        if (!empty(Db::getInstance()->fetchColumn('select email from users where login = ?', $to))) {
            return self::ERROR_WRONG_LOGIN;
        }
        if (!empty(Db::getInstance()->ofetch('SELECT 1 FROM users_recovery WHERE login = ?', $to))) {
            return self::ERROR_TOO_MANY_TRIES;
        }

        $hash = uniqid();
        $tomorrow = date('d-M-Y', strtotime('+1 days'));
        Db::getInstance()->execute('INSERT INTO users_recovery (login, hash, ip, date) VALUES (?,?,?,?)', [$to, $hash, $tomorrow, $_SERVER['REMOTE_ADDR']]);
        $message = sprintf(
            'Здравствуйте!<br><br>Кто-то запросил восстановление пароля к вашему персонажу %s <br><br>
                Для смены пароля пройдите по <a href="//%s/rememberpassword.php?change=%s">данной ссылке</a>.<br><br>
                Ссылка будет действовать до <em>%s</em>',
            $to,
            GAMEDOMAIN,
            $hash,
            $tomorrow
        );
        return self::mailSend($check->email, $message) ? self::OK_MAIL_SENT : self::ERROR_MAIL_NOT_SENT;
    }
    public function isAllowed($hash)
    {
        return Db::getInstance()->execute('SELECT count(*) FROM users_recovery WHERE hash = ? AND date < ?', [$hash, date('d-M-Y')])->fetchColumn() ? true : self::ERROR_OLD_HASH;
    }

    public function setNewPassword(string $newPassword, string $hash):string
    {
        $login = Db::getInstance()->execute('select login from users_recovery where hash = ?', $hash)->fetchColumn();
        if (empty($login)) {
            return self::ERROR_WRONG_HASH;
        }
        $newPassword = password_hash($newPassword, PASSWORD_DEFAULT);
        Db::getInstance()->execute('UPDATE users SET pass = ? WHERE login = ?', [$newPassword, $login]);
        Db::getInstance()->execute('DELETE FROM users_recovery WHERE hash = ?', $hash);
        return self::OK_PASSWORD_CHANGED;
    }
}