from datetime import date
from sqlalchemy import String, Boolean, ForeignKey, Date
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.models.base import Base, TimestampMixin


class Child(TimestampMixin, Base):
    __tablename__ = "children"

    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), nullable=False)
    name: Mapped[str] = mapped_column(String(100), nullable=False)
    birth_date: Mapped[date | None] = mapped_column(Date, nullable=True)
    is_active: Mapped[bool] = mapped_column(Boolean, default=True)
    color: Mapped[str] = mapped_column(String(7), default="#4F46E5")  # hex color for UI

    user: Mapped["User"] = relationship("User", back_populates="children")  # noqa: F821
    daily_sessions: Mapped[list["DailySession"]] = relationship(  # noqa: F821
        "DailySession", back_populates="child"
    )
    activity_logs: Mapped[list["ActivityLog"]] = relationship(  # noqa: F821
        "ActivityLog", back_populates="child"
    )