from sqlalchemy import Column, Integer, String, DateTime, ForeignKey
from sqlalchemy.orm import relationship
from datetime import datetime, timezone
from database import Base


def _utcnow():
    return datetime.now(timezone.utc)


class RecoveryCode(Base):
    __tablename__ = "recovery_codes"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    code_hash = Column(String, nullable=False)
    created_at = Column(DateTime(timezone=True), default=_utcnow, nullable=False)
    used_at = Column(DateTime(timezone=True), nullable=True)

    user = relationship("User", backref="recovery_codes")