from extensions import db


class Question(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    text = db.Column(db.String(255), nullable=False)
    choices = db.relationship('Choice', backref='question', lazy=True)


class Choice(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    text = db.Column(db.String(255), nullable=False)
    question_id = db.Column(db.Integer, db.ForeignKey(
        'question.id'), nullable=False)

    # Nieuwe kolom voor de volgende vraag
    next_question_id = db.Column(
        db.Integer, db.ForeignKey('question.id'), nullable=True)
    next_question = db.relationship('Question', foreign_keys=[
                                    next_question_id], backref='previous_choices')