<?php

/**
 * phpMyFAQ main error class.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public License,
 * v. 2.0. If a copy of the MPL was not distributed with this file, You can
 * obtain one at https://mozilla.org/MPL/2.0/.
 *
 * @package   phpMyFAQ
 * @author    Thorsten Rinne <thorsten@phpmyfaq.de>
 * @copyright 2020-2026 phpMyFAQ Team
 * @license   https://www.mozilla.org/MPL/2.0/ Mozilla Public License Version 2.0
 * @link      https://www.phpmyfaq.de
 * @since     2020-11-13
 */

declare(strict_types=1);

namespace phpMyFAQ\Core;

use ErrorException;
use phpMyFAQ\Environment;
use phpMyFAQ\Strings;

/**
 * Class Error
 *
 * @package phpMyFAQ
 */
class Error
{
    /**
     * Error handler to convert all errors to PHP exceptions by
     * throwing a PHP ErrorException.
     *
     * @throws ErrorException
     */
    public static function errorHandler(int $level, string $message, string $filename, int $line): void
    {
        if (error_reporting() !== 0) {
            $filename = Environment::isDebugMode() ? $filename : basename($filename);
            throw new ErrorException($message, 0, $level, $filename, $line);
        }
    }

    /**
     * Exception handler.
     *
     * @param $exception
     */
    public static function exceptionHandler($exception): void
    {
        $code = $exception->getCode();
        if ($code !== 404) {
            $code = 500;
        }

        http_response_code($code);

        echo '<h1>phpMyFAQ Fatal error</h1>';
        echo "<p>Uncaught exception: '" . $exception::class . "'</p>";
        echo "<p>Message: '" . Strings::htmlentities($exception->getMessage()) . "'</p>";
        echo '<p>Stack trace:<pre>' . $exception->getTraceAsString() . '</pre></p>';
        echo "<p>Thrown in '" . $exception->getFile() . "' on line " . $exception->getLine() . '</p>';
        if (ini_get('log_errors')) {
            error_log(sprintf(
                "phpMyFAQ %s: %s in %s on line %d\nStack trace:\n%s",
                $exception::class,
                $exception->getMessage(),
                $exception->getFile(),
                $exception->getLine(),
                $exception->getTraceAsString(),
            ));
        }
    }
}
