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<?php |
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namespace Mezon\Application; |
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use Mezon\Transport\RequestParamsInterface; |
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use Mezon\Transport\HttpRequestParams; |
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use Mezon\Router\Router; |
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use Mezon\Transport\Request; |
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use Mezon\Redirect\Layer; |
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/** |
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* Class Application |
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* |
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* @package Mezon |
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* @subpackage Application |
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* @author Dodonov A.A. |
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* @version v.1.0 (2019/08/13) |
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* @copyright Copyright (c) 2019, aeon.org |
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*/ |
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/** |
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* Base class of the application |
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*/ |
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class Application |
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{ |
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/** |
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* Router object |
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* |
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* @var Router |
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*/ |
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private $router = null; |
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/** |
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* Params fetcher |
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* |
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* @var HttpRequestParams |
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*/ |
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private $requestParams = null; |
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/** |
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* Constructor |
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*/ |
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function __construct() |
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{ |
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// getting application's actions |
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$this->router = new Router(); |
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Request::registerRouter($this->router); |
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$this->router->fetchActions($this); |
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$classPath = $this->getClassPath(); |
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if (file_exists($classPath . '/Conf/routes.php')) { |
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$this->loadRoutesFromConfig($classPath . '/Conf/routes.php'); |
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} |
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if (file_exists($classPath . '/Conf/routes.json')) { |
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$this->loadRoutesFromConfig($classPath . '/Conf/routes.json'); |
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} |
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} |
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/** |
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* Method returns class path |
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* |
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* @return string |
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*/ |
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protected function getClassPath(): string |
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{ |
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$reflector = new \ReflectionClass(get_class($this)); |
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return dirname($reflector->getFileName()); |
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} |
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/** |
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* Method returns $this->requestParams and creates this object if necessery |
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* |
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* @return RequestParamsInterface |
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*/ |
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public function getRequestParamsFetcher(): RequestParamsInterface |
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{ |
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if ($this->requestParams === null) { |
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$this->requestParams = new HttpRequestParams($this->router); |
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} |
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return $this->requestParams; |
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} |
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/** |
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* Method calls route and returns it's content |
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*/ |
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protected function callRoute() |
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{ |
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$route = explode('/', trim(@$_GET['r'], '/')); |
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if ($this->router === null) { |
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throw (new \Exception('this->router was not set', - 2)); |
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} |
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return $this->router->callRoute($route); |
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} |
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/** |
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* Method loads single route |
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* |
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* @param array $route |
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* Route settings |
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*/ |
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public function loadRoute(array $route): void |
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{ |
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if (isset($route['route']) === false) { |
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throw (new \Exception('Field "route" must be set')); |
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} |
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if (isset($route['callback']) === false) { |
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throw (new \Exception('Field "callback" must be set')); |
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} |
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$callback = $route['callback']; |
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if (is_array($route['callback'])) { |
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$route['class'] = $route['callback'][0]; |
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$route['callback'] = $route['callback'][1]; |
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} else { |
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$class = isset($route['class']) ? new $route['class']() : $this; |
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$callback = [ |
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$class, |
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$callback |
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]; |
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} |
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$this->router->addRoute($route['route'], $callback, isset($route['method']) ? $route['method'] : 'GET'); |
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} |
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/** |
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* Method loads routes |
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* |
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* @param array $routes |
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* List of routes |
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*/ |
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public function loadRoutes(array $routes): void |
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{ |
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foreach ($routes as $route) { |
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$this->loadRoute($route); |
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} |
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} |
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/** |
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* Method loads routes from config file in *.php or *.json format |
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* |
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* @param string $configPath |
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* Path of the config for routes |
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*/ |
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public function loadRoutesFromConfig(string $configPath): void |
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{ |
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if (file_exists($configPath)) { |
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if (substr($configPath, - 5) === '.json') { |
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// load config from json |
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$routes = json_decode(file_get_contents($configPath), true); |
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} else { |
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// loadconfig from php |
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$routes = (include ($configPath)); |
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} |
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$this->loadRoutes($routes); |
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} else { |
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throw (new \Exception('Route ' . $configPath . ' was not found', 1)); |
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} |
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} |
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/** |
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* Method loads list of configs |
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* |
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* @param array $configPaths |
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* paths to config files |
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*/ |
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public function loadRoutesFromConfigs(array $configPaths): void |
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{ |
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foreach ($configPaths as $configPath) { |
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$this->loadRoutesFromConfig($configPath); |
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} |
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} |
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/** |
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* Method loads routes from the directory |
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* |
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* @param string $directory |
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* path to the directory. Scanninng is recursive. |
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*/ |
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public function loadRoutesFromDirectory(string $directory): void |
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{ |
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$paths = scandir($directory); |
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foreach ($paths as $path) { |
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if (is_file($directory . '/' . $path)) { |
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$this->loadRoutesFromConfig($directory . '/' . $path); |
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} |
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} |
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} |
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/** |
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* Method processes exception |
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* |
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* @param \Exception $e |
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* Exception object to be formatted |
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*/ |
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public function handleException(\Exception $e): void |
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{ |
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print('<pre>' . $e->getMessage() . '<br/>' . implode('<br/>', $this->formatCallStack($e))); |
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} |
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/** |
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* Running application |
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*/ |
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public function run(): void |
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{ |
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try { |
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print($this->callRoute()); |
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} catch (\Exception $e) { |
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$this->handleException($e); |
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} |
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} |
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/** |
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* Allowing to call methods added on the fly |
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* |
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* @param string $method |
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* Method to be called |
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* @param array $args |
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* Arguments |
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* @return mixed Result of the call |
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*/ |
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public function __call(string $method, array $args) |
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{ |
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if (isset($this->$method)) { |
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$function = $this->$method; |
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return call_user_func_array($function, $args); |
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} else { |
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throw (new \Exception('Method ' . $method . ' was not found in the application ' . get_class($this))); |
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} |
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} |
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/** |
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* Method redirects user to another page |
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* |
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* @param string $url |
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* New page |
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*/ |
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public function redirectTo($url): void |
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{ |
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if (isset($_GET['redirect-to'])) { |
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$url = str_replace('{redirect-to}', urldecode($_GET['redirect-to']), $url); |
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} |
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Layer::redirectTo($url); |
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} |
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/** |
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* Method validates that route exists |
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* |
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* @param string $route |
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* route |
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* @return bool true if the route exists |
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*/ |
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public function routeExists(string $route): bool |
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{ |
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return $this->router->routeExists($route); |
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} |
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/** |
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* Method returns router |
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* |
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* @return \Mezon\Router\Router router |
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*/ |
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public function getRouter(): \Mezon\Router\Router |
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{ |
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return $this->router; |
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} |
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/** |
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* Formatting call stack |
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* |
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* @param mixed $e |
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* Exception object |
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*/ |
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protected function formatCallStack($e): array |
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{ |
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$stack = $e->getTrace(); |
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foreach ($stack as $i => $call) { |
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$stack[$i] = (@$call['file'] == '' ? 'lambda : ' : @$call['file'] . ' (' . $call['line'] . ') : ') . |
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(@$call['class'] == '' ? '' : $call['class'] . '->') . $call['function']; |
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} |
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return array_reverse($stack); |
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} |
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/** |
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* Method builds route data |
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* |
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* @param string $route |
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* route |
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* @param string $method |
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* HTTP method |
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* @param object $handler |
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* object wich handles request |
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* @param string $function |
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* controller's function name |
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* @return array built route data |
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*/ |
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public static function buildRoute(string $route, string $method, object $handler, string $function): array |
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{ |
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return [ |
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'route' => $route, |
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'method' => $method, |
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'callback' => [ |
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$handler, |
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$function |
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] |
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]; |
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} |
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} |
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