431 lines
14 KiB
Python
431 lines
14 KiB
Python
import asyncio
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import json
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import logging
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import socket
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from typing import List, Optional
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from datetime import datetime, timezone
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from fastapi import APIRouter, Depends, HTTPException, WebSocket, WebSocketDisconnect, Request
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from fastapi.responses import HTMLResponse
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from sqlalchemy.orm import Session
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from database import get_db
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from models import Device, VitalReading, TransmissionLog
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logger = logging.getLogger(__name__)
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router = APIRouter()
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# === WebSocket Manager for real-time vitals push ===
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class VitalsWebSocketManager:
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"""Manages WebSocket connections for live vitals streaming."""
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def __init__(self):
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self.active_connections: List[WebSocket] = []
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async def connect(self, websocket: WebSocket):
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await websocket.accept()
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self.active_connections.append(websocket)
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logger.info(f"WebSocket client connected ({len(self.active_connections)} active)")
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def disconnect(self, websocket: WebSocket):
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if websocket in self.active_connections:
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self.active_connections.remove(websocket)
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logger.info(f"WebSocket client disconnected ({len(self.active_connections)} active)")
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async def broadcast_vitals(self, vitals_data: dict):
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"""Send vitals to all connected WebSocket clients."""
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dead = []
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for connection in self.active_connections:
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try:
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await connection.send_json(vitals_data)
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except Exception:
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dead.append(connection)
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for d in dead:
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self.disconnect(d)
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# Global singleton
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ws_manager = VitalsWebSocketManager()
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def get_ws_manager() -> VitalsWebSocketManager:
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return ws_manager
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# === Dashboard HTML Route ===
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@router.get("/dashboard", response_class=HTMLResponse)
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def serve_dashboard():
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"""Serve the vitals monitoring dashboard."""
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import os
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dashboard_path = os.path.join(os.path.dirname(os.path.dirname(__file__)), "static", "dashboard.html")
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try:
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with open(dashboard_path, "r", encoding="utf-8") as f:
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return HTMLResponse(content=f.read())
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except FileNotFoundError:
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return HTMLResponse(content="<h1>Dashboard not found</h1><p>static/dashboard.html is missing</p>", status_code=404)
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# === API Endpoints ===
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@router.get("/health")
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def health_check():
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return {"status": "ok", "service": "Patient Monitor Vital Signs Forwarder"}
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@router.get("/status")
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def get_system_status(request: Request, db: Session = Depends(get_db)):
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total_devices = db.query(Device).count()
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active_devices = db.query(Device).filter(Device.status == "active").count()
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total_readings = db.query(VitalReading).count()
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pending_transmissions = db.query(VitalReading).filter(VitalReading.transmitted == False).count()
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active_ports = getattr(request.app.state, "active_ports", [])
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return {
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"total_devices": total_devices,
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"active_devices": active_devices,
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"total_readings_stored": total_readings,
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"pending_transmissions": pending_transmissions,
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"active_ports": active_ports
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}
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@router.get("/devices")
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def list_devices(db: Session = Depends(get_db)):
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devices = db.query(Device).all()
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now = datetime.now(timezone.utc)
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updated = False
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for device in devices:
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last_seen = device.last_seen
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if last_seen.tzinfo is None:
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last_seen = last_seen.replace(tzinfo=timezone.utc)
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# If not seen for more than 15 seconds, mark offline
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if (now - last_seen).total_seconds() > 15.0:
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if device.status != "offline":
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device.status = "offline"
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updated = True
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else:
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if device.status != "active":
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device.status = "active"
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updated = True
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if updated:
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db.commit()
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return devices
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@router.get("/latest-readings")
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def get_latest_readings(device_id: str = None, limit: int = 10, db: Session = Depends(get_db)):
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query = db.query(VitalReading)
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if device_id:
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query = query.filter(VitalReading.device_id == device_id)
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readings = query.order_by(VitalReading.timestamp.desc()).limit(limit).all()
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return readings
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@router.get("/readings")
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def get_readings(device_id: str = None, patient_id: str = None, limit: int = 50, db: Session = Depends(get_db)):
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query = db.query(VitalReading)
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if device_id:
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query = query.filter(VitalReading.device_id == device_id)
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if patient_id:
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query = query.filter(VitalReading.patient_id == patient_id)
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return query.order_by(VitalReading.timestamp.desc()).limit(limit).all()
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@router.get("/transmission-logs")
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def get_transmission_logs(limit: int = 50, db: Session = Depends(get_db)):
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logs = db.query(TransmissionLog).order_by(TransmissionLog.timestamp.desc()).limit(limit).all()
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return logs
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@router.post("/test-api")
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def test_target_api_connection():
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"""
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Endpoint to trigger a test POST to the target API.
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"""
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from config import settings
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return {
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"message": "Test triggered",
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"target_url": settings.target_api_url
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}
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@router.get("/network-info")
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def get_network_info():
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"""
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Returns this PC's local IP addresses.
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Useful for configuring the CMS7000PLUS monitor's CMS Server IP.
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"""
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from config import settings
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ips = []
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try:
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for info in socket.getaddrinfo(socket.gethostname(), None, socket.AF_INET):
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ip = info[4][0]
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if ip not in ips and not ip.startswith('127.'):
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ips.append(ip)
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except Exception:
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pass
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# Find primary IP
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primary_ip = None
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try:
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s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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s.connect(('8.8.8.8', 80))
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primary_ip = s.getsockname()[0]
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s.close()
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if primary_ip not in ips:
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ips.insert(0, primary_ip)
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except Exception:
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pass
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return {
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"hostname": socket.gethostname(),
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"ip_addresses": ips,
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"primary_ip": primary_ip or (ips[0] if ips else None),
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"monitor_model": settings.monitor_model,
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"contec_ports": settings.contec_ports,
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"instructions": [
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f"1. Connect your {settings.monitor_model} to this PC via Ethernet",
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f"2. On the monitor: System Setup → Network → CMS Settings",
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f"3. Set Server IP to: {primary_ip or 'your PC IP'}",
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f"4. Set Server Port to: {settings.contec_ports[0] if settings.contec_ports else 511}",
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f"5. Enable the CMS connection",
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f"6. The dashboard will show data automatically"
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]
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}
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# === Push Vitals Endpoint (for local-to-cloud sync) ===
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from schemas import NormalizedVitals
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from models import Patient
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@router.post("/push-vitals")
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async def push_vitals(vitals: NormalizedVitals, api_key: str = None, db: Session = Depends(get_db)):
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"""
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Receive vitals pushed from a local instance and store + broadcast them.
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This enables the 'split architecture' where:
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- Local instance receives data from physical monitors via TCP
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- Local instance POSTs vitals here for cloud storage & dashboard access
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Optional: pass ?api_key=YOUR_KEY for basic authentication.
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"""
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from config import settings
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# Optional API key check
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if settings.api_token and api_key != settings.api_token:
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if settings.api_token: # Only enforce if a token is configured
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raise HTTPException(status_code=401, detail="Invalid or missing api_key")
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try:
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# 1. Device tracking
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device = db.query(Device).filter(Device.device_id == vitals.device_id).first()
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if not device:
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device = Device(
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device_id=vitals.device_id,
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ip_address=vitals.ip_address or "remote-push",
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status="active"
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)
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db.add(device)
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else:
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if vitals.ip_address:
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device.ip_address = vitals.ip_address
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device.status = "active"
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device.last_seen = datetime.now(timezone.utc)
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# 2. Patient tracking
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patient = db.query(Patient).filter(Patient.patient_id == vitals.patient_id).first()
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if not patient:
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patient = Patient(patient_id=vitals.patient_id, name="Unknown")
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db.add(patient)
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# 3. Create vital reading
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from models import VitalReading as VR
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reading = VR(
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device_id=vitals.device_id,
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patient_id=vitals.patient_id,
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timestamp=vitals.timestamp,
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heart_rate=vitals.heart_rate,
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spo2=vitals.spo2,
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systolic_bp=vitals.systolic_bp,
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diastolic_bp=vitals.diastolic_bp,
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map_bp=vitals.map_bp,
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respiratory_rate=vitals.respiratory_rate,
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temperature=vitals.temperature,
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transmitted=True # Already received = transmitted
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)
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db.add(reading)
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db.commit()
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db.refresh(reading)
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# 4. Broadcast to WebSocket clients
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await ws_manager.broadcast_vitals(vitals.model_dump(mode="json"))
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logger.info(f"Push-vitals received for device {vitals.device_id}")
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return {
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"status": "ok",
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"reading_id": reading.id,
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"device_id": vitals.device_id,
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"patient_id": vitals.patient_id
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}
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except HTTPException:
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raise
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except Exception as e:
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logger.error(f"Push-vitals error: {e}")
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db.rollback()
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raise HTTPException(status_code=500, detail=f"Failed to store vitals: {str(e)}")
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# === Patient-to-Monitor Matching Endpoint ===
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def _normalize_name(s: str) -> str:
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"""Lowercase, strip punctuation and extra spaces for fuzzy name comparison."""
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import re
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if not s:
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return ""
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return re.sub(r"[^a-z0-9\s]", "", s.lower()).split()
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def _normalize_dob(dob: str) -> str:
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"""Normalize DOB to YYYYMMDD regardless of input format (YYYY-MM-DD / YYYYMMDD / DD-MM-YYYY)."""
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if not dob:
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return ""
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dob = dob.strip().replace("/", "-")
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if len(dob) == 8 and dob.isdigit():
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return dob # already YYYYMMDD
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parts = dob.split("-")
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if len(parts) == 3:
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if len(parts[0]) == 4: # YYYY-MM-DD
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return "".join(parts)
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elif len(parts[2]) == 4: # DD-MM-YYYY
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return parts[2] + parts[1] + parts[0]
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return dob.replace("-", "")
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def _gender_code(g: str) -> str:
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"""Return single-letter gender code: M / F / U."""
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if not g:
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return ""
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g = g.strip().upper()
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if g in ("M", "MALE"):
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return "M"
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if g in ("F", "FEMALE"):
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return "F"
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return "U"
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def _calculate_age(dob_str: str) -> Optional[int]:
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"""Calculate age from YYYYMMDD string."""
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if not dob_str:
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return None
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normalized = _normalize_dob(dob_str)
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if len(normalized) != 8 or not normalized.isdigit():
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return None
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try:
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birth_year = int(normalized[:4])
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birth_month = int(normalized[4:6])
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birth_day = int(normalized[6:])
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today = datetime.now()
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return today.year - birth_year - ((today.month, today.day) < (birth_month, birth_day))
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except Exception:
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return None
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@router.get("/match-patient")
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def match_patient(
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mrn: str = None,
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gender: str = None,
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dob: str = None,
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age: int = None,
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db: Session = Depends(get_db)
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):
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"""
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Match incoming patient demographics to an active Contec monitor.
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Uses 4-point verification: MRN, Gender, DOB, Age.
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Call this from the dashboard iframe URL:
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/api/dashboard?minimal=true&mrn=MRN001&gender=M&dob=19900115&age=36
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Returns:
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{ matched: true/false, device_id, patient_id, bed_id, device_status, ... }
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"""
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if not mrn:
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return {"matched": False, "reason": "No MRN supplied"}
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# Fetch all patients
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all_patients = db.query(Patient).all()
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now = datetime.now(timezone.utc)
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# Normalize incoming params
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in_mrn = (mrn or "").strip().upper()
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in_gender = _gender_code(gender or "")
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in_dob = _normalize_dob(dob or "")
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in_age = age
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matched_patient = None
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match_score = 0
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for p in all_patients:
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score = 0
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# --- MRN check (primary, required) ---
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p_mrn = (p.mrn or p.patient_id or "").strip().upper()
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if in_mrn and p_mrn == in_mrn:
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score += 10
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else:
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continue # MRN must match
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# --- Gender check ---
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if in_gender and p.gender:
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if _gender_code(p.gender) == in_gender:
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score += 3
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# --- DOB check ---
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if in_dob and p.dob:
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if _normalize_dob(p.dob) == in_dob:
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score += 3
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# --- Age check ---
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if in_age is not None and p.dob:
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calc_p_age = _calculate_age(p.dob)
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if calc_p_age is not None and calc_p_age == in_age:
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score += 2
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if score > match_score:
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match_score = score
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matched_patient = p
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# Require MRN match (10) + at least one secondary attribute (gender/dob/age)
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if not matched_patient or match_score < 12:
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return {"matched": False, "reason": "No matching patient found in monitor database with 4-point verification (MRN + Gender + DOB + Age)"}
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# Find the most recent vital reading for this patient
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latest = (
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db.query(VitalReading)
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.filter(VitalReading.patient_id == matched_patient.patient_id)
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.order_by(VitalReading.timestamp.desc())
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.first()
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)
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if not latest:
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return {
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"matched": True,
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"patient_id": matched_patient.patient_id,
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"device_id": None,
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"bed_id": matched_patient.bed_id,
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"reason": "Patient found but no readings yet"
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}
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# Get device status
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device = db.query(Device).filter(Device.device_id == latest.device_id).first()
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device_status = "unknown"
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if device:
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last_seen = device.last_seen
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if last_seen.tzinfo is None:
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last_seen = last_seen.replace(tzinfo=timezone.utc)
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device_status = "active" if (now - last_seen).total_seconds() < 15 else "offline"
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return {
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"matched": True,
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"patient_id": matched_patient.patient_id,
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"patient_name": matched_patient.name,
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"patient_gender": matched_patient.gender,
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"patient_dob": matched_patient.dob,
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"device_id": latest.device_id,
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"bed_id": matched_patient.bed_id,
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"device_status": device_status,
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"last_reading_at": latest.timestamp.isoformat() if latest.timestamp else None,
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"match_score": match_score,
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}
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