Source code for cata_log_hub.database.mixins

# SPDX-License-Identifier: AGPL-3.0-or-later
#
# Cata-Log - the central hub for digital flyers
# Copyright (C) 2026 David Aderbauer & The Cata-Log Contributors
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.

from datetime import datetime

from sqlalchemy import (
    func,
    orm,
)

from cata_log_hub.database.types import UTCDatetime




class TimestampMixin:
    """Mixin adding standard creation and update timestamps to an ORM model."""

    created_at: orm.Mapped[datetime] = orm.mapped_column(
        UTCDatetime,
        server_default=func.current_timestamp(),
        nullable=False,
    )

    updated_at: orm.Mapped[datetime] = orm.mapped_column(
        UTCDatetime,
        server_default=func.current_timestamp(),
        onupdate=func.current_timestamp(),
        nullable=False,
    )