protected $request;

protected $response;

protected $success = false;

protected $errors = array();

protected $answer = array();

public function __construct(Api_Request $request) {

$this->request = $request;

}

abstract public function process();

public function process_request() {

try {

$this->process();

} catch (Error_Api $e) {

$this->add_error($e->getCode(), $e->getMessage());

$this->set_success(false);

}

$response_class = $this->request->get_response_class();

$this->response = new $response_class(

$this->success,

$this->errors,

$this->answer

);

return $this;

}

public function send_headers() {

$headers = $this->response->get_headers();

ob_end_clean();

foreach ($headers as $key => $header) {

header("$key: $header");

}

return $this;

}

public function get_response() {

return $this->response->get();

}

protected function add_error($code, $error = '') {

$this->errors[] = array($code, (String) $error);

}

protected function answer($data) {

foreach ($data as $key => $item) {

$this->add_answer($key, $item);

}

}

protected function add_answer($key, $data) {

$this->answer[$key] = $data;

}

protected function set_success($success) {

$this->success = (bool) $success;

}

protected function get($value = false) {

return $this->request->get($value);

}