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<?php declare(strict_types=1); |
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namespace Igni\Application; |
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use Igni\Application\Exception\ApplicationException; |
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use Igni\Application\Http\MiddlewareAggregator; |
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use Igni\Application\Listeners\OnBootListener; |
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use Igni\Application\Listeners\OnErrorListener; |
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use Igni\Application\Listeners\OnRunListener; |
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use Igni\Application\Listeners\OnShutDownListener; |
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use Igni\Application\Providers\ConfigProvider; |
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use Igni\Application\Providers\ControllerProvider; |
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use Igni\Application\Providers\ServiceProvider; |
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use Igni\Container\DependencyResolver; |
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use Igni\Container\ServiceLocator; |
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use Psr\Container\ContainerInterface; |
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use Throwable; |
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/** |
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* Main glue between all components. |
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* |
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* @package Igni\Application |
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*/ |
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abstract class Application |
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{ |
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/** |
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* @var ServiceLocator|ContainerInterface |
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*/ |
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private $container; |
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/** |
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* @var Config |
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*/ |
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private $config; |
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/** |
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* @var bool |
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*/ |
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private $initialized = false; |
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/** |
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* @var object[]|class[] |
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*/ |
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protected $modules; |
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/** |
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* @var DependencyResolver |
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*/ |
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protected $resolver; |
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/** |
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* Application constructor. |
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* |
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* @param ContainerInterface|null $container |
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*/ |
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public function __construct(ContainerInterface $container = null) |
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{ |
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if ($container === null) { |
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$container = new ServiceLocator(); |
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} |
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$this->container = $container; |
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$this->resolver = new DependencyResolver($this->container); |
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if ($this->container->has(Config::class)) { |
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$this->config = $this->container->get(Config::class); |
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} else { |
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$this->config = new Config([]); |
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} |
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$this->modules = []; |
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} |
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/** |
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* Allows for application extension by modules. |
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* Module can be any valid object or class name. |
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* |
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* @param $module |
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*/ |
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public function extend($module): void |
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{ |
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if (is_object($module) || class_exists($module)) { |
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$this->modules[] = $module; |
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} else { |
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throw ApplicationException::forInvalidModule($module); |
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} |
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} |
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/** |
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* Starts the application. |
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* Initialize modules. Performs tasks to generate response for the client. |
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* |
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* @return mixed |
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*/ |
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abstract public function run(); |
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/** |
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* Controller aggregator is used to register application's controllers. |
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* @return ControllerAggregator |
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*/ |
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abstract public function getControllerAggregator(): ControllerAggregator; |
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/** |
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* Middleware aggregator is used to register application's middlewares. |
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* @return MiddlewareAggregator |
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*/ |
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abstract public function getMiddlewareAggregator(): MiddlewareAggregator; |
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/** |
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* @return Config |
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*/ |
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public function getConfig(): Config |
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{ |
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return $this->config; |
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} |
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public function getContainer(): ContainerInterface |
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{ |
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return $this->container; |
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} |
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protected function handleOnBootListeners(): void |
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{ |
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foreach ($this->modules as $module) { |
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if ($module instanceof OnBootListener) { |
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$module->onBoot($this); |
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} |
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} |
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} |
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protected function handleOnShutDownListeners(): void |
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{ |
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foreach ($this->modules as $module) { |
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if ($module instanceof OnShutDownListener) { |
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$module->onShutDown($this); |
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} |
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} |
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} |
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protected function handleOnErrorListeners(Throwable $exception): Throwable |
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{ |
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foreach ($this->modules as $module) { |
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if ($module instanceof OnErrorListener) { |
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$exception = $module->onError($this, $exception); |
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} |
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} |
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return $exception; |
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} |
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protected function handleOnRunListeners(): void |
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{ |
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foreach ($this->modules as $module) { |
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if ($module instanceof OnRunListener) { |
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$module->onRun($this); |
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} |
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} |
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} |
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protected function initialize(): void |
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{ |
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if ($this->initialized) { |
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return; |
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} |
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foreach ($this->modules as &$module) { |
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$this->initializeModule($module); |
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} |
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$this->initialized = true; |
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} |
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protected function initializeModule(&$module): void |
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{ |
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if (is_string($module)) { |
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$module = $this->resolver->resolve($module); |
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} |
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if ($module instanceof ConfigProvider) { |
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$module->provideConfig($this->getConfig()); |
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} |
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if ($module instanceof ControllerProvider) { |
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$module->provideControllers($this->getControllerAggregator()); |
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} |
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if ($module instanceof ServiceProvider) { |
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$module->provideServices($this->getContainer()); |
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} |
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} |
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} |
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igniphp /
framework
