"""
User Preferences Model

Stores user-specific settings like theme and default room.
"""
import uuid

from sqlalchemy import String, ForeignKey
from sqlalchemy.dialects.postgresql import UUID, JSONB
from sqlalchemy.orm import Mapped, mapped_column, relationship

from src.db.database import Base

from typing import TYPE_CHECKING

if TYPE_CHECKING:
    from src.db.models.user import User


class UserPreferences(Base):
    """
    User preferences model

    Stores user-specific settings that persist across sessions.
    Extended settings stored in preferences_json for flexibility.
    """

    __tablename__ = "user_preferences"

    user_id: Mapped[uuid.UUID] = mapped_column(
        UUID(as_uuid=True),
        ForeignKey("users.id", ondelete="CASCADE"),
        primary_key=True,
    )
    theme: Mapped[str] = mapped_column(
        String(20),
        default="system",
        nullable=False,
        comment="Theme preference: system, light, dark",
    )
    default_room: Mapped[str] = mapped_column(
        String(50),
        default="front-hall",
        nullable=False,
        comment="Default room for housekeeping features",
    )
    preferences_json: Mapped[dict] = mapped_column(
        JSONB,
        default=dict,
        nullable=False,
        comment="Extended preferences as JSON",
    )

    # Relationships
    user: Mapped["User"] = relationship(
        "User",
        back_populates="preferences",
    )

    def __repr__(self) -> str:
        return f"<UserPreferences user_id={self.user_id}>"