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<?php |
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/** |
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* Starlit App. |
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* |
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* @copyright Copyright (c) 2016 Starweb AB |
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* @license BSD 3-Clause |
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*/ |
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namespace Starlit\App; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\Routing\Exception\ResourceNotFoundException; |
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use Symfony\Component\HttpFoundation\Session\Session; |
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use Starlit\App\Provider\ServiceProviderInterface; |
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use Starlit\App\Provider\StandardServiceProvider; |
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use Starlit\App\Provider\ErrorServiceProvider; |
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/** |
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* Main framework application and bootstrap class, which also serves as a micro service/dependency injection container. |
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* |
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* @author Andreas Nilsson <http://github.com/jandreasn> |
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*/ |
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class BaseApp |
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{ |
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/** |
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* @const string |
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*/ |
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const CHARSET = 'UTF-8'; |
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/** |
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* @var Config |
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*/ |
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protected $config; |
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/** |
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* @var string |
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*/ |
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protected $environment; |
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/** |
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* @var array |
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*/ |
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private $dicValues = []; |
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/** |
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* @var array |
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*/ |
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private $dicObjects = []; |
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/** |
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* Constructor. |
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* |
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* @param array|Config $config |
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* @param string $environment Defaults to "production" |
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*/ |
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public function __construct($config = [], $environment = 'production') |
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{ |
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if ($config instanceof Config) { |
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$this->config = $config; |
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} else { |
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$this->config = new Config($config); |
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} |
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$this->environment = $environment; |
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$this->init(); |
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} |
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/** |
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* Initializes the application. |
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* |
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* Put initialization code that should always be run here, but (NB!) make sure |
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* no objects are actually instanced here, because then mock objects can't be |
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* injected in their place. Place object instance code in the preHandle method. |
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*/ |
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protected function init() |
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{ |
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$this->set('cli', (PHP_SAPI === 'cli')); |
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if ($this->config->has('phpSettings')) { |
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$this->setPhpSettings($this->config->get('phpSettings')); |
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} |
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$this->register(new ErrorServiceProvider()); |
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$this->register(new StandardServiceProvider()); |
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} |
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/** |
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* @param array $phpSettings |
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* @param string $prefix |
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*/ |
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protected function setPhpSettings($phpSettings, $prefix = '') |
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{ |
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foreach ($phpSettings as $key => $val) { |
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$key = $prefix . $key; |
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if (is_scalar($val)) { |
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ini_set($key, $val); |
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} elseif (is_array($val)) { |
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$this->setPhpSettings($val, $key . '.'); // Set sub setting with a recursive call |
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} |
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} |
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} |
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/** |
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* Register service provider. |
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* |
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* @param ServiceProviderInterface $serviceProvider |
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*/ |
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public function register(ServiceProviderInterface $serviceProvider) |
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{ |
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$serviceProvider->register($this); |
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} |
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/** |
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* Pre handle method meant to be overridden in descendant classes (optional). |
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* |
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* This method is called before an request is handled. Object instance code should be |
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* place here and not in init() (more info about this at init()). |
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* |
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* @param Request $request |
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* @return Response|null |
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*/ |
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protected function preHandle(Request $request) |
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{ |
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} |
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/** |
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* Post route method meant to be overridden in descendant classes (optional). |
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* This method is called before an request is dispatched but after it's routed. This means that we know |
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* it's a valid route and have access to the route attributes at this stage. |
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* |
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* @param Request $request |
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* @return Response|null |
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*/ |
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protected function postRoute(Request $request) |
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{ |
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} |
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/** |
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* Handles an http request and returns a response. |
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* |
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* @param Request $request |
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* @return Response |
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*/ |
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public function handle(Request $request) |
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{ |
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$this->set('request', $request); |
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if (($preHandleResponse = $this->preHandle($request))) { |
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return $preHandleResponse; |
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} |
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try { |
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$controller = $this->getRouter()->route($request); |
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if (($postRouteResponse = $this->postRoute($request))) { |
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return $postRouteResponse; |
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} |
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$response = $controller->dispatch(); |
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} catch (ResourceNotFoundException $e) { |
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$response = $this->getNoRouteResponse($request); |
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} |
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$this->postHandle($request); |
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return $response; |
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} |
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/** |
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* Returns a response for no route / resource not found. |
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* |
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* @param Request $request |
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* @return Response |
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*/ |
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protected function getNoRouteResponse(Request $request) |
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{ |
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return new Response('Not Found', 404); |
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} |
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/** |
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* Post handle method meant to be overridden in descendant classes (optional). |
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* This method is called after an request has been handled but before |
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* the response is returned from the handle method. |
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* |
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* @param Request $request |
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*/ |
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protected function postHandle(Request $request) |
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{ |
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} |
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/** |
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* Set a DIC value. |
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* |
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* @param string $key |
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* @param mixed $value Wrap objects in a closure for lazy loading |
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* @return BaseApp |
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*/ |
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public function set($key, $value) |
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{ |
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$this->dicValues[$key] = $value; |
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unset($this->dicObjects[$key]); // In case an object instance was stored for sharing |
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return $this; |
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} |
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/** |
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* Check if a DIC value/object exists. |
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* |
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* @param string $key |
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* @return bool |
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*/ |
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public function has($key) |
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{ |
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return array_key_exists($key, $this->dicValues); |
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} |
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/** |
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* @param string $key |
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* @return bool |
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*/ |
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public function hasInstance($key) |
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{ |
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return isset($this->dicObjects[$key]); |
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} |
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/** |
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* Get the shared instance of a DIC object, or a DIC value if it's not an object. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function get($key) |
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{ |
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if (!$this->has($key)) { |
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throw new \InvalidArgumentException(sprintf('No application value with key "%s" is defined.', $key)); |
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} |
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// Get already instantiated object if it exist |
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if (isset($this->dicObjects[$key])) { |
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return $this->dicObjects[$key]; |
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} |
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// Check if it's an invokable (closure/anonymous function) |
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if (is_object($this->dicValues[$key]) && method_exists($this->dicValues[$key], '__invoke')) { |
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$this->dicObjects[$key] = $this->dicValues[$key]($this); |
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return $this->dicObjects[$key]; |
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} |
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return $this->dicValues[$key]; |
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} |
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/** |
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* Get new instance of a DIC object. |
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* |
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* @param string $key |
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* @return mixed |
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*/ |
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public function getNew($key) |
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{ |
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if (!array_key_exists($key, $this->dicValues)) { |
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throw new \InvalidArgumentException(sprintf('No application value with key "%s" is defined.', $key)); |
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} elseif (!is_object($this->dicValues[$key]) || !method_exists($this->dicValues[$key], '__invoke')) { |
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throw new \InvalidArgumentException(sprintf('Application value "%s" is not invokable.', $key)); |
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} |
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return $this->dicValues[$key]($this); |
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} |
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/** |
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* Destroy a DIC object instance. |
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* |
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* Will force a new object to be created on next call. |
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* |
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* @param string $key |
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*/ |
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public function destroyInstance($key) |
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{ |
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unset($this->dicObjects[$key]); |
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} |
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/** |
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* Destroy all DIC object instances. |
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* |
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* Will force new objects to be created on next call. |
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*/ |
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public function destroyAllInstances() |
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{ |
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$this->dicObjects = []; |
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// To make sure objects (like database connections) are destructed properly. PHP might not destruct objects |
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// until the end of execution otherwise. |
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gc_collect_cycles(); |
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} |
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299
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/** |
300
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* Magic method to get or set DIC values. |
301
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* |
302
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* @param string $name |
303
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* @param array $arguments |
304
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* @return mixed |
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*/ |
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5 |
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public function __call($name, $arguments) |
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{ |
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// getNew followed by an upper letter like getNewApple() |
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if (preg_match('/^getNew([A-Z].*)/', $name, $matches)) { |
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$key = lcfirst($matches[1]); |
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312
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return $this->getNew($key); |
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4 |
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} elseif (strpos($name, 'get') === 0) { |
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$key = lcfirst(substr($name, 3)); |
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316
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return $this->get($key); |
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3 |
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} elseif (strpos($name, 'set') === 0) { |
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2 |
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$argumentCount = count($arguments); |
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2 |
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if ($argumentCount !== 1) { |
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throw new \BadMethodCallException("Invalid argument count[{$argumentCount}] for application {$name}()"); |
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} |
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323
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1 |
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$key = lcfirst(substr($name, 3)); |
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325
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return $this->set($key, $arguments[0]); |
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} else { |
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throw new \BadMethodCallException("No application method named {$name}()"); |
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} |
329
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} |
330
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331
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/** |
332
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* @return Config |
333
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*/ |
334
|
19 |
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public function getConfig() |
335
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{ |
336
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19 |
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return $this->config; |
337
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} |
338
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339
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/** |
340
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* @return bool |
341
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*/ |
342
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19 |
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public function isCli() |
343
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{ |
344
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19 |
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return $this->get('cli'); |
345
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} |
346
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347
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/** |
348
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* @return Session |
349
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*/ |
350
|
1 |
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public function getSession() |
351
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{ |
352
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1 |
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return $this->get('session'); // Makes this method faster by bypassing __call() (which is quite slow). |
353
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} |
354
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|
355
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/** |
356
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* @return Router |
357
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*/ |
358
|
3 |
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public function getRouter() |
359
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{ |
360
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3 |
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return $this->get('router'); // Makes this method faster by bypassing __call() (which is quite slow). |
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} |
362
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363
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/** |
364
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* @return Request|null |
365
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*/ |
366
|
2 |
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public function getRequest() |
367
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{ |
368
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2 |
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return $this->has('request') ? $this->get('request') : null; |
369
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} |
370
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371
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/** |
372
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* @return string |
373
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*/ |
374
|
1 |
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public function getEnvironment() |
375
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|
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{ |
376
|
1 |
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return $this->environment; |
377
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} |
378
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} |
379
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|
|
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.