from __future__ import annotations

from datetime import datetime, timezone
from typing import Optional

from sqlmodel import Field, SQLModel


def _now() -> datetime:
    return datetime.now(timezone.utc)


class AuditLog(SQLModel, table=True):
    id: Optional[int] = Field(default=None, primary_key=True)
    user: str
    action: str  # e.g. "stack.start"
    target: str  # stack id / resource id
    detail: Optional[str] = None
    ip: Optional[str] = None
    timestamp: datetime = Field(default_factory=_now, index=True)