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<?php |
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namespace Cerbero\FluentApi; |
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use BadMethodCallException; |
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use Cerbero\FluentApi\Clients\AsyncClientInterface; |
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use Cerbero\FluentApi\Clients\ClientInterface; |
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use Cerbero\FluentApi\Clients\GuzzleAdapter; |
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use Cerbero\FluentApi\Inflectors\Psr4ResourceInflector; |
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use Cerbero\FluentApi\Inflectors\ResourceInflectorInterface; |
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use Cerbero\FluentApi\Requests\Request; |
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use Closure; |
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use Exception; |
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use GuzzleHttp\Client; |
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/** |
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* Abstract implementation of an API start point. |
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* |
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* @author Andrea Marco Sartori |
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*/ |
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abstract class AbstractApi extends VersionableRequestMaker |
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{ |
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/** |
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* The HTTP client. |
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* |
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* @author Andrea Marco Sartori |
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* @var Cerbero\FluentApi\Clients\ClientInterface |
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*/ |
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protected $client; |
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/** |
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* The resource inflector. |
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* |
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* @author Andrea Marco Sartori |
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* @var Cerbero\FluentApi\Inflectors\ResourceInflectorInterface |
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*/ |
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protected $inflector; |
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/** |
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* The latest resource invoked. |
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* |
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* @var Cerbero\FluentApi\AbstractResource|null |
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*/ |
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protected $resource; |
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/** |
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* Set the dependencies. |
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* |
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* @author Andrea Marco Sartori |
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* @param string|null $version |
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* @param Cerbero\FluentApi\Clients\ClientInterface|null $client |
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* @param Cerbero\FluentApi\Inflectors\ResourceInflectorInterface|null $inflector |
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* @return void |
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*/ |
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public function __construct( |
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$version = null, |
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ClientInterface $client = null, |
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ResourceInflectorInterface $inflector = null |
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) { |
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$client = $client ?: $this->defaultClient(); |
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$inflector = $inflector ?: $this->defaultInflector(); |
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$this->setVersion($version)->setClient($client)->setInflector($inflector); |
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} |
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/** |
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* Dynamically resolve resources. |
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* |
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* @author Andrea Marco Sartori |
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* @param string $name |
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* @param array $parameters |
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* @return $this |
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*/ |
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public function __call($name, array $parameters) |
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{ |
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if ($this->resource && method_exists($this->resource, $name)) { |
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$this->request = $this->getRequestFromPreviousResource($name, $parameters); |
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} else { |
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$this->request = $this->getRequestByResolvingResource($name, $parameters); |
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} |
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return $this; |
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} |
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/** |
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* Retrieve the updated request from the previously resolved resource. |
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* |
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* @param string $method |
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* @param array $parameters |
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* @return Cerbero\FluentApi\Requests\Request |
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*/ |
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private function getRequestFromPreviousResource($method, array $parameters) |
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{ |
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call_user_func_array([$this->resource, $method], $parameters); |
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return $this->resource->updateOptions($this->getRequest()); |
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} |
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/** |
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* Retrieve the request from the newly resolved resource. |
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* |
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* @param string $resource |
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* @param array $parameters |
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* @return Cerbero\FluentApi\Requests\Request |
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*/ |
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private function getRequestByResolvingResource($resource, array $parameters) |
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{ |
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$class = $this->inflectResource($resource); |
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$this->resource = new $class(...$parameters); |
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return $this->resource->fillRequest($this->getRequest()); |
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} |
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/** |
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* Retrieve the base URL. |
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* |
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* @author Andrea Marco Sartori |
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* @return string |
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*/ |
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abstract public function getUrl(); |
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/** |
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* Retrieve the resource to call by inflecting the given name. |
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* |
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* @author Andrea Marco Sartori |
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* @param string $name |
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* @return Cerbero\FluentApi\Resources\ResourceInterface |
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*/ |
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protected function inflectResource($name) |
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{ |
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$target = $this->resource ?: $this; |
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$resource = $this->getInflector()->baseNamespace(get_class($target)) |
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->version($target->getVersion()) |
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->inflect($name); |
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if (class_exists($resource)) { |
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return $resource; |
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} |
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throw new BadMethodCallException("The resource [$resource] does not exist."); |
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} |
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/** |
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* Retrieve the resource inflector. |
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* |
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* @return Cerbero\FluentApi\Inflectors\ResourceInflectorInterface |
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*/ |
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public function getInflector() |
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{ |
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return $this->inflector ?: $this->defaultInflector(); |
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} |
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/** |
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* Retrieve the default inflector. |
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* |
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* @author Andrea Marco Sartori |
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* @return Cerbero\FluentApi\Inflectors\ResourceInflectorInterface |
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*/ |
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protected function defaultInflector() |
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{ |
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return new Psr4ResourceInflector; |
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} |
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/** |
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* Set the resource inflector. |
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* |
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* @author Andrea Marco Sartori |
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* @param Cerbero\FluentApi\Inflectors\ResourceInflectorInterface $inflector |
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* @return $this |
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*/ |
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public function setInflector(ResourceInflectorInterface $inflector) |
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{ |
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$this->inflector = $inflector; |
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return $this; |
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} |
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/** |
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* Perform a synchronous call to the eventual endpoint. |
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* |
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* @return Psr\Http\Message\ResponseInterface |
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*/ |
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public function call() |
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{ |
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return $this->performCall(); |
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} |
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/** |
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* Perform an HTTP call by using the client. |
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* |
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* @param Closure|null $success |
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* @param Closure|null $failure |
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* @return mixed |
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*/ |
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private function performCall(Closure $success = null, Closure $failure = null) |
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{ |
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$parameters = [ |
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$this->request->verb(), $this->request->endpoint(), $this->request->options(), |
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]; |
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if ($success) { |
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array_push($parameters, $success, $failure); |
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} |
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return call_user_func_array( |
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[$this->getClient(), $success ? 'then' : 'call'], $parameters |
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); |
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} |
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/** |
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* Perform an asynchronous call to the eventual endpoint. |
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* |
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* @param Closure $success |
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* @param Closure|null $failure |
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* @return mixed |
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*/ |
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public function then(Closure $success, Closure $failure = null) |
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{ |
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if (! $this->getClient() instanceof AsyncClientInterface) { |
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throw new Exception("The set client can't perform asynchronous calls."); |
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} |
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return $this->performCall($success, $failure); |
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} |
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/** |
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* Retrieve the body of the response as a JSON object. |
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* |
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* @return \StdClass |
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*/ |
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public function toJson() |
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{ |
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return $this->decodeBody(); |
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} |
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/** |
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* Retrieve the decoded response body. |
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* |
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* @param boolean $toArray |
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* @return \StdClass|array |
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*/ |
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private function decodeBody($toArray = false) |
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{ |
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$body = $this->call()->getBody()->getContents(); |
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return json_decode($body, $toArray); |
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} |
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/** |
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* Retrieve the body of the response as an array. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->decodeBody(true); |
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} |
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/** |
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* Retrieve the eventual API URL. |
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* |
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* @return string |
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*/ |
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public function toUrl() |
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{ |
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$options = $this->getRequest()->options(); |
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$query = $this->getQueryByOptions($options); |
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return $this->getRequest()->endpoint() . $query; |
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} |
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/** |
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* Retrieve the query string parameters by the given options. |
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* |
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* @param array $options |
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* @return string |
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*/ |
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private function getQueryByOptions(array $options) |
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{ |
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$query = $this->getClient()->getQueryByOptions($options); |
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return empty($query) ? '' : '?' . http_build_query($query); |
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} |
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/** |
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* Retrieve the request to pass through resources. |
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* |
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* @return Cerbero\FluentApi\Requests\Request |
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*/ |
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public function getRequest() |
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{ |
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return $this->request ?: new Request($this->getUrl()); |
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} |
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/** |
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* Set the HTTP client. |
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* |
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* @author Andrea Marco Sartori |
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* @param Cerbero\FluentApi\Clients\ClientInterface $client |
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* @return $this |
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*/ |
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public function setClient(ClientInterface $client) |
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{ |
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$this->client = $client; |
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return $this; |
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} |
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/** |
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* Retrieve the HTTP client. |
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* |
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* @author Andrea Marco Sartori |
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* @return Cerbero\FluentApi\Clients\ClientInterface |
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*/ |
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public function getClient() |
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{ |
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return $this->client; |
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} |
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/** |
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* Retrieve the default HTTP client to use if none is provided. |
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* |
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* @author Andrea Marco Sartori |
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* @return Cerbero\FluentApi\Clients\ClientInterface |
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*/ |
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protected function defaultClient() |
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{ |
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return new GuzzleAdapter(new Client); |
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} |
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} |
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Adding a
@return
annotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.