<?php

/**
 * @package    Grav\Framework\RequestHandler
 *
 * @copyright  Copyright (C) 2015 - 2019 Trilby Media, LLC. All rights reserved.
 * @license    MIT License; see LICENSE file for details.
 */

declare(strict_types=1);

namespace Grav\Framework\RequestHandler\Exception;

use Psr\Http\Message\ServerRequestInterface;

class RequestException extends \RuntimeException
{
    /** @var array Map of standard HTTP status code/reason phrases */
    private static $phrases = [
        400 => 'Bad Request',
        401 => 'Unauthorized',
        402 => 'Payment Required',
        403 => 'Forbidden',
        404 => 'Not Found',
        405 => 'Method Not Allowed',
        406 => 'Not Acceptable',
        407 => 'Proxy Authentication Required',
        408 => 'Request Time-out',
        409 => 'Conflict',
        410 => 'Gone',
        411 => 'Length Required',
        412 => 'Precondition Failed',
        413 => 'Request Entity Too Large',
        414 => 'Request-URI Too Large',
        415 => 'Unsupported Media Type',
        416 => 'Requested range not satisfiable',
        417 => 'Expectation Failed',
        418 => 'I\'m a teapot',
        419 => 'Page Expired',
        422 => 'Unprocessable Entity',
        423 => 'Locked',
        424 => 'Failed Dependency',
        425 => 'Unordered Collection',
        426 => 'Upgrade Required',
        428 => 'Precondition Required',
        429 => 'Too Many Requests',
        431 => 'Request Header Fields Too Large',
        451 => 'Unavailable For Legal Reasons',

        500 => 'Internal Server Error',
        501 => 'Not Implemented',
        502 => 'Bad Gateway',
        503 => 'Service Unavailable',
        504 => 'Gateway Time-out',
        505 => 'HTTP Version not supported',
        506 => 'Variant Also Negotiates',
        507 => 'Insufficient Storage',
        508 => 'Loop Detected',
        511 => 'Network Authentication Required',
    ];

    /** @var ServerRequestInterface */
    private $request;

    /**
     * @param ServerRequestInterface $request
     * @param string $message
     * @param int $code
     * @param \Throwable|null $previous
     */
    public function __construct(ServerRequestInterface $request, string $message, int $code = 500, \Throwable $previous = null)
    {
        $this->request = $request;

        parent::__construct($message, $code, $previous);
    }

    /**
     * @return ServerRequestInterface
     */
    public function getRequest() : ServerRequestInterface
    {
        return $this->request;
    }

    public function getHttpCode() : int
    {
        $code = $this->getCode();

        return isset(self::$phrases[$code]) ? $code : 500;
    }

    public function getHttpReason() : ?string
    {
        return self::$phrases[$this->getCode()] ?? self::$phrases[500];
    }
}