#!/usr/bin/env python
import sys
import requests
import serial
import random
import datetime
import time

battery_capacity = requests.get("http://wollinuc.local:5000/stats").json()['capa']

def eat(ser):
    time.sleep(1)
    received = []
    while True:
        dat = ser.read(1)
        if dat:
            received.append(dat)
        else:
            break
    return b''.join(received)

now = datetime.datetime.utcnow()

#this script gets called every hour at minutes 13,27,39,53

if battery_capacity < 6000:
    print(f"Bat cap not enough: {battery_capacity}")
elif battery_capacity < 10000 and now.minute != 13:
    print(f"Bat cap not low: {battery_capacity}")
else:
    tx_freq = 10138700 + 400 + random.randint(1410, 1490)
    print(f"TX freq {tx_freq}")
    serial = serial.Serial("/dev/serial/by-id/usb-HB9EGM_Beep_Machine_1-if00", 115200, timeout=0)
    serial.write('f{}\n'.format(tx_freq).encode("ascii"))
    print(f"Answer: {eat(serial)}")

    while True:
        now = datetime.datetime.utcnow()
        if now.minute % 2 == 0 and now.second == 00:
            break
        time.sleep(0.1)

    print(f"{now} TX")
    serial.write(b'wspr\n')
    print(f"Answer: {eat(serial)}")