"""
Base model with common fields
"""
from sqlalchemy import Column, DateTime, String
from sqlalchemy.sql import func
from app.database.base import Base


class TimestampMixin:
    """Mixin for created_at and updated_at timestamps"""
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())


class BaseModel(Base, TimestampMixin):
    """Base model class"""
    __abstract__ = True