Initial certificate system

backend/app/models/admin.py

@@ -0,0 +1,27 @@
+from datetime import datetime
+
+from sqlalchemy import DateTime, String
+from sqlalchemy.orm import Mapped, mapped_column
+
+from app.db.base import Base
+
+
+class Role(Base):
+    __tablename__ = "roles"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    code: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    name: Mapped[str] = mapped_column(String(64))
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+
+
+class AdminUser(Base):
+    __tablename__ = "admin_users"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    username: Mapped[str] = mapped_column(String(64), unique=True, index=True)
+    password_hash: Mapped[str] = mapped_column(String(255))
+    role_code: Mapped[str] = mapped_column(String(64), index=True)
+    status: Mapped[str] = mapped_column(String(32), default="active")
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)