<?php
/// CRIMSON --- A simple PHP framework.
/// Copyright © 2024 Freya Murphy <contact@freyacat.org>
///
/// This file is part of CRIMSON.
///
/// CRIMSON is free software; you can redistribute it and/or modify it
/// under the terms of the GNU General Public License as published by
/// the Free Software Foundation; either version 3 of the License, or (at
/// your option) any later version.
///
/// CRIMSON is distributed in the hope that it will be useful, but
/// WITHOUT ANY WARRANTY; without even the implied warranty of
/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/// GNU General Public License for more details.
///
/// You should have received a copy of the GNU General Public License
/// along with CRIMSON. If not, see <http://www.gnu.org/licenses/>.

function esc(string $data, bool $string_esc = FALSE): string {
	$flags = ENT_SUBSTITUTE | ENT_HTML401;
	if ($string_esc)
		$flags |= ENT_QUOTES;
	return htmlspecialchars($data, $flags);
}

function status_code_msg(int $code): ?string {

	static $status_code = array(
		100 => "Continue",
		101 => "Switching Protocols",
		200 => "OK",
		201 => "Created",
		202 => "Accepted",
		203 => "Non-Authoritative Information",
		204 => "No Content",
		205 => "Reset Content",
		206 => "Partial Content",
		300 => "Multiple Choices",
		301 => "Moved Permanently",
		302 => "Found",
		303 => "See Other",
		304 => "Not Modified",
		//305 => "Use Proxy",
		//306 => "unused",
		307 => "Temporary Redirect",
		308 => "Permanent Redirect",
		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 Timeout",
		409 => "Conflict",
		410 => "Gone",
		411 => "Length Required",
		412 => "Precondition Failed",
		413 => "Content Too Large",
		414 => "URI Too Long",
		415 => "Unsupported Media Type",
		416 => "Range Not Satisfiable",
		417 => "Expectation Failed",
		418 => "I'm a teapot",
		421 => "Misdirected Request",
		422 => "Unprocessable Content",
		423 => "Locked",
		424 => "Failed Dependency",
		425 => "Too Early",
		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 Timeout",
		505 => "HTTP Version Not Supported",
		506 => "Variant Also Negotiates",
		507 => "Insufficient Storage",
		508 => "Loop Detected",
		510 => "Not Extended",
		511 => "Network Authentication Required",
	);

	return $status_code[$code] ?? NULL;
}

function is_valid_status_code(int $code): bool {
	return is_string(status_code_msg($code));
}