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<?php |
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namespace seregazhuk\PinterestBot\Api; |
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use ReflectionClass; |
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use seregazhuk\PinterestBot\Api\Providers\Provider; |
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use seregazhuk\PinterestBot\Contracts\RequestInterface; |
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use seregazhuk\PinterestBot\Contracts\ResponseInterface; |
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use seregazhuk\PinterestBot\Exceptions\WrongProviderException; |
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use seregazhuk\PinterestBot\Contracts\ProvidersContainerInterface; |
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class ProvidersContainer implements ProvidersContainerInterface |
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{ |
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/** |
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* References to the request and response classes that travels |
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* through the application |
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* |
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* @var RequestInterface |
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*/ |
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protected $request; |
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/** |
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* @var ResponseInterface |
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*/ |
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protected $response; |
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const PROVIDERS_NAMESPACE = "seregazhuk\\PinterestBot\\Api\\Providers\\"; |
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/** |
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* A array containing the cached providers |
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* |
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* @var array |
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*/ |
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private $providers = []; |
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public function __construct(RequestInterface $request, ResponseInterface $response) |
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{ |
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$this->request = $request; |
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$this->response = $response; |
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} |
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/** |
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* Gets provider object by name. If there is no such provider |
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* in providers array, it will try to create it, then save |
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* it, and then return. |
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* |
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* @param string $provider |
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* @return Provider |
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* @throws WrongProviderException |
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*/ |
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public function getProvider($provider) |
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{ |
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$provider = strtolower($provider); |
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// Check if an instance has already been initiated |
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if ( ! isset($this->providers[$provider])) { |
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$this->addProvider($provider); |
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} |
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return $this->providers[$provider]; |
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} |
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/** |
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* Creates provider by class name, and if success saves |
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* it to providers array. Provider class must be in PROVIDERS_NAMESPACE. |
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* |
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* @param string $provider |
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* @throws WrongProviderException |
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*/ |
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private function addProvider($provider) |
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{ |
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$className = self::PROVIDERS_NAMESPACE.ucfirst($provider); |
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if ( ! class_exists($className)) { |
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throw new WrongProviderException("Provider $className not found."); |
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} |
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$this->providers[$provider] = $this->buildProvider($className); |
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} |
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/** |
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* Build Provider object with reflection API. |
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* |
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* @param string $className |
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* @return object |
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* @throws WrongProviderException |
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*/ |
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private function buildProvider($className) |
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{ |
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$ref = new ReflectionClass($className); |
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if ( ! $ref->isInstantiable()) { |
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throw new WrongProviderException("Provider $className is not instantiable."); |
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} |
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return $ref->newInstanceArgs([$this->request, $this->response]); |
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} |
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/** |
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* @return RequestInterface |
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*/ |
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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 ResponseInterface |
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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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} |
seregazhuk /
php-pinterest-bot
