<?php

/**
 * \app\constants\HttpReponseCodes provides named constants for
 * HTTP protocol status codes. Written for the
 * Recess Framework (http://www.recessframework.com/)
 *
 * @author Kris Jordan
 * @license MIT
 * @package recess.http
 *
 * usage: <?php header(\app\constants\HttpReponseCodes::httpHeaderFor(503)); ?>
 */

namespace app\constants;

class HttpReponseCodes {

    // [Informational 1xx]
    const HTTP_CONTINUE = 100;
    const HTTP_SWITCHING_PROTOCOLS = 101;
    // [Successful 2xx]
    const HTTP_OK = 200;
    const HTTP_CREATED = 201;
    const HTTP_ACCEPTED = 202;
    const HTTP_NONAUTHORITATIVE_INFORMATION = 203;
    const HTTP_NO_CONTENT = 204;
    const HTTP_RESET_CONTENT = 205;
    const HTTP_PARTIAL_CONTENT = 206;
    // [Redirection 3xx]
    const HTTP_MULTIPLE_CHOICES = 300;
    const HTTP_MOVED_PERMANENTLY = 301;
    const HTTP_FOUND = 302;
    const HTTP_SEE_OTHER = 303;
    const HTTP_NOT_MODIFIED = 304;
    const HTTP_USE_PROXY = 305;
    const HTTP_UNUSED = 306;
    const HTTP_TEMPORARY_REDIRECT = 307;
    // [Client Error 4xx]
    const HTTP_BAD_REQUEST = 400;
    const HTTP_UNAUTHORIZED = 401;
    const HTTP_PAYMENT_REQUIRED = 402;
    const HTTP_FORBIDDEN = 403;
    const HTTP_NOT_FOUND = 404;
    const HTTP_METHOD_NOT_ALLOWED = 405;
    const HTTP_NOT_ACCEPTABLE = 406;
    const HTTP_PROXY_AUTHENTICATION_REQUIRED = 407;
    const HTTP_REQUEST_TIMEOUT = 408;
    const HTTP_CONFLICT = 409;
    const HTTP_GONE = 410;
    const HTTP_LENGTH_REQUIRED = 411;
    const HTTP_PRECONDITION_FAILED = 412;
    const HTTP_REQUEST_ENTITY_TOO_LARGE = 413;
    const HTTP_REQUEST_URI_TOO_LONG = 414;
    const HTTP_UNSUPPORTED_MEDIA_TYPE = 415;
    const HTTP_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
    const HTTP_EXPECTATION_FAILED = 417;
    // [Server Error 5xx]
    const HTTP_INTERNAL_SERVER_ERROR = 500;
    const HTTP_NOT_IMPLEMENTED = 501;
    const HTTP_BAD_GATEWAY = 502;
    const HTTP_SERVICE_UNAVAILABLE = 503;
    const HTTP_GATEWAY_TIMEOUT = 504;
    const HTTP_VERSION_NOT_SUPPORTED = 505;

    private static $messages = array(
        // [Informational 1xx]
        100 => '100 Continue', 101 => '101 Switching Protocols',
        // [Successful 2xx]
        200 => '200 OK', 201 => '201 Created', 202 => '202 Accepted', 203 => '203 Non-Authoritative Information', 204 => '204 No Content', 205 => '205 Reset Content', 206 => '206 Partial Content',
        // [Redirection 3xx]
        300 => '300 Multiple Choices', 301 => '301 Moved Permanently', 302 => '302 Found', 303 => '303 See Other', 304 => '304 Not Modified', 305 => '305 Use Proxy', 306 => '306 (Unused)', 307 => '307 Temporary Redirect',
        // [Client Error 4xx]
        400 => '400 Bad Request', 401 => '401 Unauthorized', 402 => '402 Payment Required', 403 => '403 Forbidden', 404 => '404 Not Found', 405 => '405 Method Not Allowed', 406 => '406 Not Acceptable', 407 => '407 Proxy Authentication Required', 408 => '408 Request Timeout', 409 => '409 Conflict', 410 => '410 Gone', 411 => '411 Length Required', 412 => '412 Precondition Failed', 413 => '413 Request Entity Too Large', 414 => '414 Request-URI Too Long', 415 => '415 Unsupported Media Type', 416 => '416 Requested Range Not Satisfiable', 417 => '417 Expectation Failed',
        // [Server Error 5xx]
        500 => '500 Internal Server Error', 501 => '501 Not Implemented', 502 => '502 Bad Gateway', 503 => '503 Service Unavailable', 504 => '504 Gateway Timeout', 505 => '505 HTTP Version Not Supported');

    public static function httpHeaderFor($code) {
        return 'HTTP/1.1 ' . self::$messages[$code];
    }

    public static function getMessageForCode($code) {
        return isset(self::$messages[$code]) ? self::$messages[$code] : 'Error';
    }

    public static function isError($code) {
        return is_numeric($code) && $code >= self::HTTP_BAD_REQUEST;
    }

    public static function canHaveBody($code) {
        return
                // True if not in 100s
                ($code < self::HTTP_CONTINUE || $code >= self::HTTP_OK) && // and not 204 NO CONTENT
                $code != self::HTTP_NO_CONTENT && // and not 304 NOT MODIFIED
                $code != self::HTTP_NOT_MODIFIED;
    }

    static function getConstants() {
        $oClass = new \ReflectionClass(__CLASS__);
        return $oClass->getConstants();
    }

}

?>