Scaffold V2 backend foundation

ai_knowledge_base_v2/apps/backend/app/models/knowledge.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlalchemy import BigInteger, DateTime, ForeignKey, String
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.models.base import Base, TimestampMixin
+
+
+class Knowledge(Base, TimestampMixin):
+    __tablename__ = "sys_knowledge"
+
+    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    name: Mapped[str] = mapped_column(String(100), nullable=False)
+    feishu_space_id: Mapped[str] = mapped_column(String(100), nullable=False)
+    feishu_node_id: Mapped[str] = mapped_column(String(100), nullable=False)
+    status: Mapped[int] = mapped_column(default=1, nullable=False)
+    remark: Mapped[str | None] = mapped_column(String(255), nullable=True)
+
+    user_permissions: Mapped[list["UserKnowledgePermission"]] = relationship(
+        "UserKnowledgePermission", back_populates="knowledge"
+    )
+
+
+class UserKnowledgePermission(Base, TimestampMixin):
+    __tablename__ = "sys_user_kb"
+
+    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
+    user_id: Mapped[int] = mapped_column(ForeignKey("sys_user.id"), index=True, nullable=False)
+    knowledge_id: Mapped[int] = mapped_column(ForeignKey("sys_knowledge.id"), index=True, nullable=False)
+    effective_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
+    expired_at: Mapped[datetime | None] = mapped_column(DateTime, nullable=True)
+    created_by: Mapped[int | None] = mapped_column(BigInteger, nullable=True)
+
+    user: Mapped["User"] = relationship("User", back_populates="knowledge_permissions")
+    knowledge: Mapped[Knowledge] = relationship("Knowledge", back_populates="user_permissions")