from sqlalchemy import String, Integer, Float, Boolean, ForeignKey, func
from sqlalchemy.orm import Mapped, mapped_column
from datetime import datetime
from typing import Optional
from app.database import Base


class Settings(Base):
    __tablename__ = "settings"

    id: Mapped[int] = mapped_column(primary_key=True, index=True)

    # FK to users table — NOT NULL enforced by migration 023 after data backfill
    user_id: Mapped[int] = mapped_column(
        ForeignKey("users.id", ondelete="CASCADE"),
        nullable=False,
        index=True,
    )

    accent_color: Mapped[str] = mapped_column(String(20), default="cyan")
    upcoming_days: Mapped[int] = mapped_column(Integer, default=7)
    preferred_name: Mapped[str | None] = mapped_column(String(100), nullable=True, default=None)
    weather_city: Mapped[str | None] = mapped_column(String(100), nullable=True, default=None)
    weather_lat: Mapped[float | None] = mapped_column(Float, nullable=True, default=None)
    weather_lon: Mapped[float | None] = mapped_column(Float, nullable=True, default=None)
    first_day_of_week: Mapped[int] = mapped_column(Integer, default=0)  # 0=Sunday, 1=Monday

    # ntfy push notification configuration
    ntfy_server_url: Mapped[Optional[str]] = mapped_column(String(500), nullable=True, default=None)
    ntfy_topic: Mapped[Optional[str]] = mapped_column(String(255), nullable=True, default=None)
    ntfy_auth_token: Mapped[Optional[str]] = mapped_column(String(500), nullable=True, default=None)
    ntfy_enabled: Mapped[bool] = mapped_column(Boolean, default=False, server_default="false")

    # Per-type notification toggles (default on so they work immediately once master is enabled)
    ntfy_events_enabled: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")
    ntfy_reminders_enabled: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")
    ntfy_todos_enabled: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")
    ntfy_projects_enabled: Mapped[bool] = mapped_column(Boolean, default=True, server_default="true")

    # Lead time controls
    ntfy_event_lead_minutes: Mapped[int] = mapped_column(Integer, default=15, server_default="15")
    ntfy_todo_lead_days: Mapped[int] = mapped_column(Integer, default=1, server_default="1")
    ntfy_project_lead_days: Mapped[int] = mapped_column(Integer, default=2, server_default="2")

    @property
    def ntfy_has_token(self) -> bool:
        """Derived field for SettingsResponse — True when an auth token is stored."""
        return bool(self.ntfy_auth_token)

    created_at: Mapped[datetime] = mapped_column(default=func.now())
    updated_at: Mapped[datetime] = mapped_column(default=func.now(), onupdate=func.now())