from database import db
from datetime import datetime, timezone


class Memory(db.Model):
    __tablename__ = "memories"

    id = db.Column(db.Integer, primary_key=True)
    user_id = db.Column(db.Integer, db.ForeignKey("users.id", ondelete="CASCADE"), nullable=False, index=True)
    key = db.Column(db.String(200), nullable=False, index=True)
    value = db.Column(db.Text, nullable=False)
    created_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc))
    updated_at = db.Column(db.DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))

    def to_dict(self):
        return {
            "id": self.id,
            "key": self.key,
            "value": self.value,
            "created_at": self.created_at.isoformat() if self.created_at else None,
            "updated_at": self.updated_at.isoformat() if self.updated_at else None
        }