first commit

backend/app/models/dashboard.py

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+from sqlalchemy import String, Boolean, Integer, ForeignKey, Text
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.core.db import Base
+
+class Permission(Base):
+    __tablename__ = "permissions"
+    user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), primary_key=True)
+    router_id: Mapped[int] = mapped_column(ForeignKey("routers.id", ondelete="CASCADE"), primary_key=True)
+    can_view: Mapped[bool] = mapped_column(Boolean, default=True)
+    can_edit: Mapped[bool] = mapped_column(Boolean, default=False)
+
+class Dashboard(Base):
+    __tablename__ = "dashboards"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    owner_user_id: Mapped[int] = mapped_column(ForeignKey("users.id", ondelete="CASCADE"), index=True)
+    name: Mapped[str] = mapped_column(String(200))
+    is_shared: Mapped[bool] = mapped_column(Boolean, default=False)
+
+class DashboardPanel(Base):
+    __tablename__ = "dashboard_panels"
+
+    id: Mapped[int] = mapped_column(primary_key=True, autoincrement=True)
+    dashboard_id: Mapped[int] = mapped_column(ForeignKey("dashboards.id", ondelete="CASCADE"), index=True)
+    title: Mapped[str] = mapped_column(String(200))
+    router_id: Mapped[int] = mapped_column(ForeignKey("routers.id", ondelete="CASCADE"), index=True)
+    # config_json: {"interfaces":["ether1"],"metrics":["rx_bps","tx_bps"],"interval_ms":1000,"window":120}
+    config_json: Mapped[str] = mapped_column(Text, default="{}")
+
+    dashboard = relationship("Dashboard")