from sqlalchemy import Column, DateTime, ForeignKey, Text
from sqlalchemy.dialects.postgresql import UUID
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from .simple_base import Base
import uuid


class Response(Base):
    __tablename__ = "responses"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    poll_id = Column(UUID(as_uuid=True), ForeignKey("polls.id"), nullable=False)
    user_id = Column(UUID(as_uuid=True), nullable=True)
    submitted_at = Column(DateTime(timezone=True), server_default=func.now(), nullable=False)

    answers = relationship("Answer", backref="response", cascade="all, delete-orphan", passive_deletes=True)


class Answer(Base):
    __tablename__ = "answers"

    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    response_id = Column(UUID(as_uuid=True), ForeignKey("responses.id", ondelete="CASCADE"), nullable=False)
    question_id = Column(UUID(as_uuid=True), ForeignKey("questions.id"), nullable=False)
    choice_id = Column(UUID(as_uuid=True), nullable=True)
    text = Column(Text, nullable=True)


__all__ = ["Base", "Response", "Answer"]