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<?php /* Copyright (c) 2024 Freya Murphy */
class Router extends Component {
private bool $db_ready;
private bool $recursed;
private array $req;
/**
* Creates a router
* @param Loader $load - the main laoder object
*/
function __construct()
{
$this->db_ready = file_exists('/status/ready');
$this->recursed = FALSE;
$this->req = $this->get_req();
}
/**
* @param string $path - the current request path
* Gets the current route
* @return array<string,mixed>
*/
private function get_req_route($path): array
{
// trim the path
$path = trim($path);
// remove first '/'
$path = substr($path, 1);
// get modified route
$routes = CONFIG['routes'];
foreach ($routes as $key => $value) {
$key = "/^{$key}$/";
if (!preg_match($key, $path, $matches))
continue;
$path = $value;
for ($i = 1; $i < count($matches); $i++) {
$path = str_replace(
"\\{$i}",
$matches[$i],
$path);
}
break;
}
// get path parts
$parts = explode('/', $path);
// get the length
$len = count($parts);
// get route info
$route = array();
// e.g. /
if ($path === '')
$route = array(
'app' => 'index',
'slug' => 'index',
'args' => array(),
);
// e.g. /home /login
else if ($len === 1)
$route = array(
'app' => $parts[0],
'slug' => 'index',
'args' => array(),
);
// e.g. /home/posts
else if ($len === 2)
$route = array (
'app' => $parts[0],
'slug' => $parts[1],
'args' => array(),
);
// e.g. /home/posts/joe
else
$route = array (
'app' => $parts[0],
'slug' => $parts[1],
'args' => array_slice($parts, 2),
);
if (isset($routes[$path])) {
$parts = explode('/', $routes[$path]);
if (count($parts) == 1) {
$route['app'] = $parts[0];
} else {
$route['app'] = $parts[0];
$route['slug'] = $parts[1];
}
}
return $route;
}
/**
* Gets the users ip
*/
private function get_ip(): string
{
$ip = '';
if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
$ip = $_SERVER['HTTP_CLIENT_IP'];
} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
} else {
$ip = $_SERVER['REMOTE_ADDR'];
}
return $ip;
}
/**
* Gets the curret request info
* @return array<string,mixed>
*/
private function get_req(): array
{
$method = $_SERVER['REQUEST_METHOD'];
$uri_str = $_SERVER['REQUEST_URI'];
$uri = parse_url($uri_str);
if (!$uri) {
$uri = array('path' => '/error');
}
$path = '';
if (array_key_exists('path', $uri)) {
$path = $uri['path'];
}
return array_merge(
array(
'uri' => $uri,
'uri_str' => $uri_str,
'method' => $method,
'ip' => $this->get_ip()
),
$this->get_req_route($path),
);
}
/**
* Handles a router error code
* @param int $code - the http error code
*/
private function handle_error(int $code): void
{
if ($this->recursed)
die($code . ' (recursed)');
$this->recursed = TRUE;
$this->req['app'] = 'error';
$this->req['slug'] = 'code';
$this->req['args'] = array($code);
$this->handle_req();
}
/**
* @param array<int,mixed> $req
*/
private function load_htc(array $req): void
{
$parts = explode('/', $req['uri_str']);
$file = end($parts);
$path = PUBLIC_ROOT . '/polyfills/' . $file;
if (file_exists($path)) {
header('Content-type: text/x-component');
include($path);
} else {
$this->handle_error(400);
}
}
/**
* @param array $req
* @param array<int,mixed> $req
*/
public function handle_req(): void
{
if ($this->recursed === FALSE) {
// if we are in a recursing error handler
// we dont want to trigger a db 503 forever
// since its already active
if ($this->db_ready === FALSE) {
$this->handle_error(503);
return;
}
}
// server error if we cannot parse url
if (!$this->req) {
$this->handle_error(500);
return;
}
// load htc if someone is requesting it (hi IE6 :3)
if (str_ends_with($this->req['uri_str'], '.htc')) {
$this->load_htc($this->req);
return;
}
// load the controller
$controller = $this->load_controller($this->req['app']);
if ($controller === NULL) {
$this->handle_error(404);
return;
}
$ref = NULL;
try {
$cls = new ReflectionClass($controller);
$mds = $cls->getMethods(ReflectionMethod::IS_PUBLIC);
foreach ($mds as $md) {
if ($md->name !== $this->req['slug'])
continue;
if (count($md->getParameters()) !=
count($this->req['args']))
continue;
$ref = $md;
break;
}
} catch (Exception $_e) {}
if ($ref === NULL) {
$this->handle_error(404);
return;
}
define('CONTEXT', $this->req);
Component::load_lang('common', $this->req['app']);
$ref->invokeArgs($controller, $this->req['args']);
}
}
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