awurth / Slim

    {

        $questions = [];

        if (!$input->getArgument('username')) {

            $question = new Question('Please choose a username:');

            $question->setValidator(function ($username) {

                if (empty($username)) {

                    throw new \Exception('Username can not be empty');

                }

                return $username;

            });

            $questions['username'] = $question;

        }

        if (!$input->getArgument('email')) {

            $question = new Question('Please choose an email:');

            $questions['username'] = $question;

        }

        if (!$input->getArgument('email')) {

            $question = new Question('Please choose an email:');

            $question->setValidator(function ($email) {

                if (empty($email)) {

                    throw new \Exception('Email can not be empty');

                }

                return $email;

            });

            $questions['email'] = $question;

        }

        if (!$input->getArgument('password')) {

            $question = new Question('Please choose a password:');

            $questions['email'] = $question;

        }

        if (!$input->getArgument('password')) {

            $question = new Question('Please choose a password:');

            $question->setValidator(function ($password) {

                if (empty($password)) {

                    throw new \Exception('Password can not be empty');

                }

                return $password;

            });

            $question->setHidden(true);

            $questions['password'] = $question;

        }

        foreach ($questions as $name => $question) {

            $answer = $this->getHelper('question')->ask($input, $output, $question);