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app/models/mariadb/device.py

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+from __future__ import annotations
+
+from datetime import datetime
+
+from sqlmodel import Field, Relationship, SQLModel
+
+from app.core.constants import DeviceStatus
+from app.db.base import SoftDeleteMixin, TimestampMixin
+
+
+class DeviceGroup(TimestampMixin, SQLModel, table=True):
+    __tablename__ = "device_groups"
+
+    id: int | None = Field(default=None, primary_key=True)
+    name: str = Field(max_length=100, unique=True)
+    description: str = Field(default="", max_length=500)
+
+    devices: list[Device] = Relationship(back_populates="group")
+
+
+class Device(TimestampMixin, SoftDeleteMixin, SQLModel, table=True):
+    __tablename__ = "devices"
+
+    id: int | None = Field(default=None, primary_key=True)
+    device_uid: str = Field(max_length=100, unique=True, index=True)
+    name: str = Field(max_length=100)
+    device_type: str = Field(default="", max_length=50)
+    status: str = Field(default=DeviceStatus.OFFLINE, max_length=20)
+    firmware_version: str = Field(default="", max_length=50)
+    ip_address: str = Field(default="", max_length=45)
+    group_id: int | None = Field(default=None, foreign_key="device_groups.id")
+    owner_id: int | None = Field(default=None, foreign_key="users.id")
+    last_seen_at: datetime | None = Field(default=None)
+    metadata_json: str = Field(default="{}", max_length=2000)
+
+    group: DeviceGroup | None = Relationship(back_populates="devices")