from __future__ import annotations

from datetime import datetime

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

from app.db.base import Base


class Task(Base):
    __tablename__ = "tasks"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, index=True)
    title: Mapped[str] = mapped_column(String(200), nullable=False)
    description: Mapped[str | None] = mapped_column(Text, nullable=True)

    # kanban columns: todo | doing | done
    status: Mapped[str] = mapped_column(String(32), nullable=False, default="todo")

    # simple attribution (no auth)
    assignee: Mapped[str | None] = mapped_column(String(120), nullable=True)

    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), server_default=func.now())
    updated_at: Mapped[datetime] = mapped_column(
        DateTime(timezone=True), server_default=func.now(), onupdate=func.now()
    )