/**
* Init the router and returns it
*
* @return Router
*/
public static function getInstance()
{
if (self::$_instance === null) {
self::$_instance = new self();
//get the routes
if (is_file(CONFIG_DIR . self::$routeFile) && empty(self::$routes)) {
self::$routes = (include CONFIG_DIR . self::$routeFile);
//sort by lenght of route url
uasort(self::$routes, function ($a, $b) {
return strlen($b['url']) - strlen($a['url']);
});
}
}
return self::$_instance;
}
/**
* Runs the callback for the given request
*/
public static function dispatch()
{
$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$method = $_SERVER['REQUEST_METHOD'];
$searches = array_keys(static::$patterns);
$replaces = array_values(static::$patterns);
self::$routes = str_replace('//', '/', self::$routes);
$found_route = false;
// check if route is defined without regex
if (in_array($uri, self::$routes)) {
$route_pos = array_keys(self::$routes, $uri);
// foreach route position
foreach ($route_pos as $route) {
if (self::$methods[$route] == $method || self::$methods[$route] == 'ANY') {
$found_route = true;
//if route is not an object
if (!is_object(self::$callbacks[$route])) {
//call object controller and method
self::invokeObject(self::$callbacks[$route]);
if (self::$halts) {
return;
}
} else {
//call closure
call_user_func(self::$callbacks[$route]);
if (self::$halts) {
return;
}
}
}
}
// end foreach
} else {
// check if defined with regex
$pos = 0;
// foreach routes
foreach (self::$routes as $route) {
$route = str_replace('//', '/', $route);
if (strpos($route, ':') !== false) {
$route = str_replace($searches, $replaces, $route);
}
if (preg_match('#^' . $route . '$#', $uri, $matched)) {
if (self::$methods[$pos] == $method || self::$methods[$pos] == 'ANY') {
$found_route = true;
//remove $matched[0] as [1] is the first parameter.
array_shift($matched);
if (!is_object(self::$callbacks[$pos])) {
//call object controller and method
self::invokeObject(self::$callbacks[$pos], $matched);
if (self::$halts) {
return;
}
} else {
//call closure
call_user_func_array(self::$callbacks[$pos], $matched);
if (self::$halts) {
return;
}
}
}
}
$pos++;
}
// end foreach
}
if (self::$fallback) {
//call the auto dispatch method
$found_route = self::autoDispatch();
}
// run the error callback if the route was not found
if (!$found_route) {
if (!self::$error_callback) {
self::$error_callback = function () {
header($_SERVER['SERVER_PROTOCOL'] . " 404 Not Found");
echo '404';
};
}
if (!is_object(self::$error_callback)) {
//call object controller and method
self::invokeObject(self::$error_callback, null, 'No routes found.');
if (self::$halts) {
return;
}
} else {
call_user_func(self::$error_callback);
if (self::$halts) {
return;
}
}
}
}