from datetime import datetime

from sqlalchemy import DateTime, Integer, String, Text
from sqlalchemy.orm import Mapped, mapped_column

from app.database import Base


class Mindmap(Base):
    __tablename__ = "mindmaps"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
    unique_id: Mapped[str] = mapped_column(
        String(32), unique=True, index=True, nullable=False
    )
    session_id: Mapped[str] = mapped_column(String(255), nullable=False)
    title: Mapped[str] = mapped_column(String(255), nullable=False)
    raw_json: Mapped[str] = mapped_column(Text, nullable=False)
    created_at: Mapped[datetime] = mapped_column(
        DateTime, default=datetime.utcnow, nullable=False
    )
    updated_at: Mapped[datetime] = mapped_column(
        DateTime, default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False
    )