"""
Модуль, описывающий модели для базы данных.
"""

from sqlalchemy import Column, DateTime, Integer, String, Text, func
from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column


class Base(DeclarativeBase):
    """
    Base model for all tables in the database.

    Fields:
        updated (Mapped[DateTime]): Update time of the object.
        created (Mapped[DateTime]): Creation time of the object.
    """

    updated: Mapped[DateTime] = mapped_column(
        DateTime,
        default=func.now(),
        onupdate=func.now(),
        nullable=False,
    )

    created: Mapped[DateTime] = mapped_column(
        DateTime,
        default=func.now(),
        nullable=False,
    )


class Item(Base):
    __tablename__ = "items"
    id = Column(Integer, primary_key=True, index=True)
    title = Column(String(200), nullable=False)
    description = Column(Text, nullable=True)