"""
Base model with common fields for all models.
"""

from datetime import datetime

from sqlalchemy import DateTime
from sqlalchemy.orm import Mapped, mapped_column
from sqlalchemy.sql import func

from app.core.database import Base as SQLAlchemyBase


class Base(SQLAlchemyBase):
    """
    Base class for all database models.
    Provides common fields: created_at, updated_at.
    """

    __abstract__ = True

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