import uuid
from datetime import datetime, timezone
from sqlalchemy import String, DateTime, ForeignKey, Text, JSON
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.database import Base

class AuditLog(Base):
    __tablename__ = "audit_logs"

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=lambda: str(uuid.uuid4()))
    school_id: Mapped[str | None] = mapped_column(String(36), ForeignKey("schools.id", ondelete="SET NULL"), nullable=True, index=True)
    actor_id: Mapped[str | None] = mapped_column(String(36), nullable=True)
    actor_email: Mapped[str | None] = mapped_column(String(255), nullable=True)
    action: Mapped[str] = mapped_column(String(100), nullable=False, index=True)
    entity_type: Mapped[str | None] = mapped_column(String(50), nullable=True)
    entity_id: Mapped[str | None] = mapped_column(String(36), nullable=True)
    detail: Mapped[dict | None] = mapped_column(JSON, nullable=True)
    ip_address: Mapped[str | None] = mapped_column(String(45), nullable=True)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(timezone.utc), index=True)

    school: Mapped["School | None"] = relationship("School", back_populates="audit_logs")