#!/usr/bin/env php
<?php

namespace mdref;

require_once $_composer_autoload_path ?? __DIR__."/../vendor/autoload.php";

if ($argc < 2) {
	fprintf(STDERR, "Usage: %s <stub.php> [<ns>]\n", $argv[0]);
	exit(1);
}

if (!($stub = realpath($argv[1]))) {
	$stat = stat($stub);
	assert(!$stat);
	exit(2);
}
if ($argc > 2) {
	$namespace = $argv[2];
} else {
	$namespace = basename($stub, ".stub.php");
}

$tmplck = tempnam(sys_get_temp_dir(), "mdref.");
$tmpdir = $tmplck . ".d";
mkdir($tmpdir) && chdir($tmpdir) || exit(-1);

$running = true;
$shutdown = function() use($tmpdir, $tmplck, &$running) {
	$running = false;
	chdir(__DIR__) && rm_r($tmpdir, $tmplck);
};
register_shutdown_function($shutdown);
pcntl_signal(SIGINT, $shutdown, false);
pcntl_signal(SIGTERM, $shutdown, false);

$passthru = fn($cmd) => fn() => printf("%s\n", $cmd) && !passthru("$cmd 2>&1 >/dev/null", $rc) && !$rc;
$stub2ref = $passthru(
	sprintf("%s/stub2ref %s %s %s",
			__DIR__,
			escapeshellarg($namespace),
			escapeshellarg($stub),
			escapeshellarg($tmpdir)
	)
);
$ref2html = $passthru(
	sprintf("%s/ref2html . .",
		__DIR__,
	)
);
$update = fn() => $stub2ref() && $ref2html();

if ($update()) {
	$ifd = inotify_init();
	inotify_add_watch($ifd, $stub, IN_MODIFY);
	stream_set_blocking($ifd, false);

	file_put_contents("router.php", file_get_contents(__FILE__, false, null, __COMPILER_HALT_OFFSET__));
	$php = popen(sprintf("%s -S localhost:0 -t . router.php 2>&1 | grep --line-buffered -Ev 'Accepted|Closing|GET'", PHP_BINARY), "r");
	echo fgets($php);
	stream_set_blocking($php, false);

	while ($running) {
		$R = [$ifd, $php]; $W = []; $E = [];
		if (stream_select($R, $W, $E, null)) {
			foreach ($R as $r) {
				switch ($r) {
					case $php:
						while (($string = fgets($php))) echo $string;
						break;
					case $ifd:
						// cooldown
						usleep(50 * 1000);
						while (inotify_read($ifd));
						$update();
						break;
				}
			}
		}
		pcntl_signal_dispatch();
	}
}

function rm_r(string ...$args) {
	foreach ($args as $del) {
		if (is_dir($del)) {
			rm_r(...array_map(fn($sub) => "$del/$sub", array_slice(scandir($del), 2)));
			rmdir($del);
		} else if (file_exists($del)) {
			unlink($del);
		}
	}
}

__HALT_COMPILER();
<?php

$file = __DIR__ . urldecode($_SERVER["REQUEST_URI"]);

if (is_file($file)) {
	return false;
}

if (is_dir($file) && file_exists($file."/index.html")) {
	readfile($file."/index.html");
} else {
	$file = rtrim($file, "/").".html";
	if (file_exists($file)) {
		readfile($file);
	} else {
		return false;
	}
}