public function checkIfReady()
    {
        if (!$this->attrs->paramsDone || !$this->attrs->inputDone) {
            return false;
        }
        if (isset($this->appInstance->passphrase)) {
            if (!isset($this->attrs->server['PASSPHRASE'])
                || ($this->appInstance->passphrase !== $this->attrs->server['PASSPHRASE'])
            ) {
                $this->finish();
            }

            return false;
        }

        if ($this->attrs->input->isFrozen()) {
            return false;
        }

        if ($this->sleepTime === 0) {
            $this->wakeup();
        }

        return true;
    }