/**
* Creates a new Requestobject
*
* @param ConfigurationInterface $configuration The configurationobject
*
* @return \ApaiIO\Request\RequestInterface
*/
public static function createRequest(ConfigurationInterface $configuration)
{
$class = $configuration->getRequest();
$factoryCallback = $configuration->getRequestFactory();
if (true === is_object($class) && $class instanceof \ApaiIO\Request\RequestInterface) {
$class->setConfiguration($configuration);
return self::applyCallback($factoryCallback, $class);
}
if (true === is_string($class) && true === array_key_exists($class, self::$requestObjects)) {
$request = self::$requestObjects[$class];
$request->setConfiguration($configuration);
return self::applyCallback($factoryCallback, $request);
}
try {
$reflectionClass = new \ReflectionClass($class);
} catch (\ReflectionException $e) {
throw new \InvalidArgumentException(sprintf("Requestclass not found: %s", $class));
}
if ($reflectionClass->implementsInterface('\\ApaiIO\\Request\\RequestInterface')) {
$request = new $class();
$request->setConfiguration($configuration);
return self::$requestObjects[$class] = self::applyCallback($factoryCallback, $request);
}
throw new \LogicException(sprintf("Requestclass does not implements the RequestInterface: %s", $class));
}
/**
* Applies a responsetransformer.
*
* @param mixed $response The response of the request
*
* @return mixed
*/
protected function applyResponseTransformer($response)
{
if (null === ($responseTransformer = $this->configuration->getResponseTransformer())) {
return $response;
}
return $responseTransformer->transform($response);
}
/**
* Applies a responsetransformer
*
* @param mixed $response The response of the request
* @param ConfigurationInterface $configuration The configurationobject
*
* @return mixed
*/
protected function applyResponseTransformer($response, ConfigurationInterface $configuration)
{
if (true === is_null($configuration->getResponseTransformer())) {
return $response;
}
$responseTransformer = ResponseTransformerFactory::createResponseTransformer($configuration);
return $responseTransformer->transform($response);
}
/**
* Builds the final querystring including the signature
*
* @param array $params
* @param ConfigurationInterface $configuration
*
* @return string
*/
protected function buildQueryString(array $params, ConfigurationInterface $configuration)
{
$parameterList = [];
foreach ($params as $key => $value) {
$parameterList[] = sprintf('%s=%s', $key, rawurlencode($value));
}
$parameterList[] = 'Signature=' . rawurlencode($this->buildSignature($parameterList, $configuration->getCountry(), $configuration->getSecretKey()));
return implode("&", $parameterList);
}
/**
* Calculates the signature for the request
*
* @param array $params
*
* @return string
*/
protected function buildSignature(array $params)
{
$template = "GET\nwebservices.amazon.%s\n/onca/xml\n%s";
return Util::buildSignature(sprintf($template, $this->configuration->getCountry(), implode('&', $params)), $this->configuration->getSecretKey());
}
/**
* Calculates the signature for the request
*
* @param string $request
*
* @return string
*/
protected function buildSignature($request)
{
return Util::buildSignature($request, $this->configuration->getSecretKey());
}
