import uuid
from datetime import datetime, timezone
from sqlalchemy import DateTime, ForeignKey, String, Text
from sqlalchemy.dialects.postgresql import JSONB, UUID
from sqlalchemy.orm import Mapped, mapped_column
from app.db.base import Base

class PlatformAuditLog(Base):
    __tablename__ = "platform_audit_logs"
    id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
    actor_user_id: Mapped[uuid.UUID] = mapped_column(UUID(as_uuid=True), ForeignKey("users.id", ondelete="RESTRICT"), nullable=False, index=True)
    action: Mapped[str] = mapped_column(String(80), nullable=False, index=True)
    entity_type: Mapped[str] = mapped_column(String(80), nullable=False, index=True)
    entity_id: Mapped[uuid.UUID | None] = mapped_column(UUID(as_uuid=True), nullable=True, index=True)
    reason: Mapped[str | None] = mapped_column(Text, nullable=True)
    details: Mapped[dict] = mapped_column(JSONB, nullable=False, default=dict)
    created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), nullable=False, default=lambda: datetime.now(timezone.utc), index=True)