"""Cross-module audit trail."""
from datetime import datetime

from sqlalchemy import DateTime, ForeignKey, Index, Integer, String
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.orm import Mapped, mapped_column, relationship

from app.db.base_class import Base


class AuditLog(Base):
    __tablename__ = "audit_logs"

    id: Mapped[int] = mapped_column(primary_key=True)
    user_id: Mapped[int | None] = mapped_column(
        ForeignKey("users.id", ondelete="SET NULL"), nullable=True, index=True
    )
    action: Mapped[str] = mapped_column(String(60), nullable=False, index=True)
    entity_type: Mapped[str] = mapped_column(String(60), nullable=False)
    entity_id: Mapped[int | None] = mapped_column(Integer, nullable=True)
    payload: Mapped[dict | None] = mapped_column(JSONB, nullable=True)
    ip_address: Mapped[str | None] = mapped_column(String(45), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, index=True)

    user = relationship("User", lazy="joined")

    __table_args__ = (Index("ix_audit_logs_entity", "entity_type", "entity_id"),)