Initial certificate system

backend/app/models/log.py

@@ -0,0 +1,19 @@
+from datetime import datetime
+
+from sqlalchemy import DateTime, String, Text
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class OperationLog(Base):
+    __tablename__ = "operation_logs"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    admin_user_id: Mapped[int | None] = mapped_column(nullable=True, index=True)
+    action: Mapped[str] = mapped_column(String(64), index=True)
+    object_type: Mapped[str] = mapped_column(String(64), index=True)
+    object_id: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    ip_address: Mapped[str | None] = mapped_column(String(64), nullable=True)
+    detail_json: Mapped[str | None] = mapped_column(Text, nullable=True)
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)