from __future__ import annotations

from datetime import datetime

from sqlalchemy import func
from sqlmodel import Field, SQLModel


class TimestampMixin(SQLModel):
    created_at: datetime = Field(
        default_factory=datetime.utcnow,
        sa_column_kwargs={"server_default": func.now()},
    )
    updated_at: datetime = Field(
        default_factory=datetime.utcnow,
        sa_column_kwargs={"server_default": func.now(), "onupdate": func.now()},
    )


class SoftDeleteMixin(SQLModel):
    is_deleted: bool = Field(default=False)
    deleted_at: datetime | None = Field(default=None)