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<?php |
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namespace Helix; |
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use ErrorException; |
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use Helix\Site\Session; |
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use Helix\Site\Controller; |
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use Helix\Site\HttpError; |
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use Helix\Site\Request; |
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use Helix\Site\Response; |
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use Throwable; |
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/** |
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* Routing and error handling. |
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*/ |
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class Site |
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{ |
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/** |
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* @var bool |
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*/ |
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protected $dev = false; |
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/** |
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* @var Request |
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*/ |
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protected $request; |
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/** |
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* @var Response |
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*/ |
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protected $response; |
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/** |
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* @var Session |
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*/ |
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protected $session; |
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/** |
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* Initializes the system for routing, error handling, and output. |
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*/ |
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public function __construct() |
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{ |
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error_reporting(E_ALL); |
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register_shutdown_function(fn() => $this->_onShutdown()); |
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set_error_handler(fn(...$args) => $this->_onRaise(...$args)); |
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set_exception_handler(fn(Throwable $error) => $this->_onException($error)); |
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$this->request = new Request(); |
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$this->response = new Response($this); |
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$this->setDev(php_sapi_name() === 'cli-server'); |
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} |
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/** |
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* Handles uncaught exceptions and exits. |
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* |
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* @param Throwable $error |
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* @internal |
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*/ |
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protected function _onException(Throwable $error): void |
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{ |
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if ($error instanceof HttpError) { |
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if ($error->getCode() >= 500) { |
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$this->log($error->getCode(), $error); |
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} |
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} else { |
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$this->log(500, "[{$error->getCode()}] {$error}"); |
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} |
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$this->response->error_exit($error); |
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} |
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/** |
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* Handles raised PHP errors (`E_NOTICE`, `E_WARNING`, etc) by throwing them. |
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* |
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* @param int $code |
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* @param string $message |
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* @param string $file |
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* @param int $line |
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* @throws ErrorException |
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* @internal |
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*/ |
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protected function _onRaise(int $code, string $message, string $file, int $line) |
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{ |
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error_clear_last(); |
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throw new ErrorException($message, $code, 1, $file, $line); |
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} |
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/** |
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* A last-ditch effort to catch fatal PHP errors which aren't intercepted by {@link Site::_onRaise()} |
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* |
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* @internal |
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*/ |
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protected function _onShutdown(): void |
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{ |
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if ($fatal = error_get_last()) { |
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// can't throw, we're shutting down. call the exception handler directly. |
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$fatal = new ErrorException($fatal['message'], $fatal['type'], 1, $fatal['file'], $fatal['line']); |
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$this->_onException($fatal); |
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} |
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} |
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/** |
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* Routes `DELETE` |
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* |
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* @param string $path |
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* @param string|callable $controller |
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* @param array $extra |
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*/ |
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public function delete(string $path, $controller, array $extra = []): void |
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{ |
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$this->route(['DELETE'], $path, $controller, $extra); |
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} |
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/** |
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* Routes `GET` and `HEAD` |
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* |
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* @param string $path |
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* @param string|callable $controller |
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* @param array $extra |
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*/ |
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public function get(string $path, $controller, array $extra = []): void |
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{ |
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$this->route(['GET', 'HEAD'], $path, $controller, $extra); |
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} |
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/** |
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* @return Request |
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*/ |
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final public function getRequest() |
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{ |
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return $this->request; |
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} |
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/** |
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* @return Response |
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*/ |
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public function getResponse() |
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{ |
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return $this->response; |
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} |
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/** |
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* @return Session |
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*/ |
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final public function getSession() |
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{ |
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return $this->session ??= new Session($this); |
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} |
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/** |
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* @return bool |
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*/ |
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final public function isDev(): bool |
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{ |
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return $this->dev; |
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} |
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/** |
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* @param mixed $code |
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* @param string $message |
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* @return $this |
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*/ |
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public function log($code, string $message) |
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{ |
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$now = date('Y-m-d H:i:s'); |
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$id = $this->response->getId(); |
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$ip = $this->request->getClient(); |
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$method = $this->request->getMethod(); |
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$path = $this->request->getPath(); |
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$line = "{$now} {$code} {$id} {$ip} {$method} {$path} - {$message}\n\n"; |
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error_log($line, 3, 'error.log'); |
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return $this; |
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} |
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/** |
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* Routes `POST` |
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* |
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* @param string $path |
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* @param string|callable $controller |
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* @param array $extra |
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*/ |
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public function post(string $path, $controller, array $extra = []): void |
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{ |
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$this->route(['POST'], $path, $controller, $extra); |
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} |
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/** |
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* Routes `PUT` |
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* |
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* @param string $path |
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* @param string|callable $controller |
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* @param array $extra |
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*/ |
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public function put(string $path, $controller, array $extra = []): void |
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{ |
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$this->route(['PUT'], $path, $controller, $extra); |
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} |
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/** |
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* Invokes a controller if the HTTP method and path match, and exits. |
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* Absolute paths must start with `/`, all other paths are treated as regular expressions. |
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* |
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* @param string[] $methods |
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* @param string $path |
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* @param string|callable $controller Controller class, or callable. |
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* @param array $extra |
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*/ |
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public function route(array $methods, string $path, $controller, array $extra): void |
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{ |
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$match = []; |
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if ($path[0] !== '/') { |
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preg_match($path, $this->request->getPath(), $match); |
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} elseif ($path === $this->request->getPath()) { |
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$match = [$path]; |
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} |
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if ($match) { |
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if (in_array($this->request->getMethod(), $methods)) { |
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$this->response->setCode(200); |
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$this->route_call_exit($match, $controller, $extra); |
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} |
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$this->response->setCode(405); |
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} |
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} |
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/** |
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* @param string[] $path |
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* @param string|callable $controller |
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* @param array $extra |
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* @uses Controller::delete() |
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* @uses Controller::get() |
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* @uses Controller::post() |
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* @uses Controller::put() |
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* @uses Controller::__call() |
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*/ |
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protected function route_call_exit(array $path, $controller, array $extra): void |
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{ |
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if (is_string($controller)) { |
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assert(is_a($controller, Controller::class, true)); |
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/** @var Controller $controller */ |
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$controller = new $controller($this, $path, $extra); |
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$method = $this->request->getMethod(); |
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$content = $controller->{$method}(); // calls are not case sensitive |
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} else { |
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assert(is_callable($controller)); |
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$content = call_user_func($controller, $path, $this); |
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} |
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$this->response->mixed_exit($content); |
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} |
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/** |
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* @param bool $dev |
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* @return $this |
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*/ |
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public function setDev(bool $dev) |
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{ |
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$this->dev = $dev; |
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return $this; |
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} |
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} |
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