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<?php |
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namespace Anax\DI; |
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use Anax\DI\Exception\Exception; |
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use Psr\Container\ContainerInterface; |
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/** |
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* DI factory class creating a set of default services by loading |
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* them from a configuration array, file and/or directory. |
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* |
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* The general configuration array for a service looks like this. |
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* [ |
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* "services" => [ |
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* "request" => [ |
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* "active" => false, |
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* "shared" => false, |
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* "callback" => function () { |
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* $object = new \stdClass(); |
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* return $object; |
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* } |
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* ], |
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* ], |
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* ] |
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*/ |
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class DIFactoryConfig extends DI implements ContainerInterface |
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{ |
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/** |
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* Create services by using $item as a reference to find a |
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* configuration for the services. The $item can be an array, |
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* a file.php, or an directory containing files named *.php. |
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* |
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* @param array|string $item referencing the source for configuration. |
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* |
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* @return $this |
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*/ |
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public function loadServices($item) : object |
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{ |
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if (is_array($item)) { |
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$this->createServicesFromArray($item, "array"); |
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return $this; |
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} |
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if (is_readable($item) && is_file($item)) { |
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$services = require $item; |
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$this->createServicesFromArray($services, $item); |
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return $this; |
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} |
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$found = false; |
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if (is_readable("$item.php") && is_file("$item.php")) { |
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$services = require "$item.php"; |
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$this->createServicesFromArray($services, $item); |
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$found = true; |
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} |
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if (is_readable($item) && is_dir($item)) { |
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foreach (glob("$item/*.php") as $file) { |
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$services = require "$file"; |
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$this->createServicesFromArray($services, $file); |
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$found = true; |
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} |
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} |
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if (!$found) { |
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throw new Exception("Item to load configuration from was no file, dir nor an array."); |
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} |
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return $this; |
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} |
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/** |
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* Create services from an array containing a list of services. |
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* |
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* @param array $service details to use when creating the service. |
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* |
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* @throws Exception when configuration is corrupt. |
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* |
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* @return void |
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*/ |
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protected function createServicesFromArray( |
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array $services, |
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string $path |
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) : void { |
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if (!isset($services["services"])) { |
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throw new Exception("The configuration array is missing the key 'services' in file '$path'."); |
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} |
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foreach ($services["services"] as $name => $service) { |
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try { |
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$this->createService($name, $service); |
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} catch (Exception $e) { |
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throw new Exception($e->getMessage() . " In configuration file '$path'."); |
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} |
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} |
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} |
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/** |
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* Create a service from a name and an array containing details on |
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* how to create it. |
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* |
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* @param string $name of service. |
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* @param array $service details to use when creating the service. |
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* |
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* @throws Exception when configuration is corrupt. |
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* |
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* @return void |
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*/ |
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protected function createService(string $name, array $service) : void |
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{ |
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if (!isset($service["callback"])) { |
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throw new Exception("The service '$name' is missing a callback."); |
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} |
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if (isset($service["shared"]) && $service["shared"]) { |
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$this->setShared($name, $service["callback"]); |
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} else { |
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$this->set($name, $service["callback"]); |
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} |
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4 |
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if (isset($service["active"]) && $service["active"]) { |
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1 |
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$this->get($name); |
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} |
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} |
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} |
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canax /
di
