"""
UserNotificationPreferences model — per-user notification opt-in settings.
"""
from __future__ import annotations
from datetime import datetime
from typing import Optional

from sqlalchemy import Integer, Boolean, DateTime, ForeignKey, func
from sqlalchemy.orm import Mapped, mapped_column

from src.apps.base.models.base import Base


class UserNotificationPreferences(Base):
    """Stores notification preferences for each user (one row per user)."""

    __tablename__ = "user_notification_preferences"

    id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(
        Integer,
        ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False,
        unique=True,
        index=True,
    )

    notify_on_new_login: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    notify_on_password_change: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
    notify_on_new_device: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)

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