| from __future__ import annotations |
|
|
| from datetime import datetime |
| from typing import TYPE_CHECKING |
|
|
| from sqlalchemy import Boolean, DateTime, Float, ForeignKey, String, func |
| from sqlalchemy.orm import Mapped, mapped_column, relationship |
|
|
| from core.database import Base |
|
|
| if TYPE_CHECKING: |
| from .patient import Patient |
|
|
|
|
| class Sensor(Base): |
| __tablename__ = "sensors" |
|
|
| id: Mapped[int] = mapped_column(primary_key=True) |
| device_id: Mapped[str] = mapped_column(String(64), unique=True, index=True, nullable=False) |
| patient_id: Mapped[int] = mapped_column(ForeignKey("patients.id", ondelete="CASCADE"), index=True) |
| location: Mapped[str] = mapped_column(String(128), nullable=False) |
| firmware: Mapped[str] = mapped_column(String(32), default="1.0.0", nullable=False) |
| battery_pct: Mapped[float] = mapped_column(Float, default=100.0, nullable=False) |
| signal_dbm: Mapped[float] = mapped_column(Float, default=-50.0, nullable=False) |
| is_online: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False) |
| last_seen_at: Mapped[datetime] = mapped_column( |
| DateTime(timezone=True), server_default=func.now(), nullable=False |
| ) |
|
|
| patient: Mapped["Patient"] = relationship(back_populates="sensors") |
|
|
| def __repr__(self) -> str: |
| return f"<Sensor device_id={self.device_id!r} patient_id={self.patient_id}>" |
|
|
