#!/usr/bin/env python3
"""A complete GEM tool in ~25 lines.

Run secs_gemd, then this. The fab host can poll ChamberPressure, receive
ProcessStarted events, get alarms above the threshold, and START the tool —
all SEMI plumbing handled by the daemon.
"""
import random
import time

from secsgem_client import Equipment

eq = Equipment("localhost:50051")


@eq.command
def START(cmd):
    print("host says START", cmd.params)
    eq.fire(eq.names.event.ProcessStarted)


eq.listen(background=True)

while True:
    pressure = round(random.uniform(1.0, 3.0), 3)
    eq.set(ChamberPressure=pressure)
    if pressure > 2.9:
        eq.alarm(eq.names.alarm.chiller_temp_high)
    else:
        eq.clear(eq.names.alarm.chiller_temp_high)
    time.sleep(1)