#!/usr/bin/python

import sys
from datetime import datetime
from datetime import timedelta
import psutil
import serial
from gettext import c2py
from time import sleep
import sensors
import subprocess
import math
import pyowm
import os

CPU_TEMP_PATH = '/sys/devices/pci0000:00/0000:00:18.3/hwmon/hwmon2/temp1_input'

file_descriptor = '/dev/ttyUSB0'
baud_rate = 9600

arduino = serial.Serial(port=file_descriptor, baudrate=baud_rate)
sleep(6)

def send_command(command):
    print("sent: " + command)
    arduino.write(command.encode())
    sleep(0.1)

def set_time(date_time):
    request = '\nTime=%s\r\n' % date_time.strftime('%H:%M:%S')
    send_command(request)


def set_max():
    ram_max = int(psutil.virtual_memory().total / (1024.*1024.))
    request = 'RamMax=%d\r\n' % ram_max
    send_command(request)

def set_free():
    ram_free = int(psutil.virtual_memory().free / (1024.*1024.))
    request = 'RamFree=%d\r\n' % ram_free
    send_command(request)

def set_system_info():
    with open('/etc/os-release', 'r') as f:
        for line in f:
            if line.startswith('NAME='):
                OSName = line.split('"')[1]
                break
    request = 'OS=%s\r\n' % OSName
    send_command(request)
    sleep(1)

    with open('/proc/version', 'r') as f:
        for line in f:
            Kernel = line.split(' ')[2].split('-')[0]
            break
    request = 'Kernel=%s\r\n' % Kernel
    send_command(request)
    sleep(1)

def set_uptime():
    uptime_seconds = psutil.boot_time()
    uptime = datetime.now() - datetime.fromtimestamp(uptime_seconds)
    uptime_hours = int(uptime.total_seconds() // 3600)
    uptime_minutes = int((uptime.total_seconds() % 3600) // 60)
    uptime = f"{uptime_hours:02d}:{uptime_minutes:02d}"
    request = 'Uptime=%s\r\n' % uptime
    send_command(request)

def start(tty_serial):

    set_system_info()
    while 1:
        set_uptime()
        sleep(1)
        cpu_temp = int(subprocess.check_output(['cat', CPU_TEMP_PATH]))/1000
        requests = "\nCpuTemp="+str(math.trunc(cpu_temp))
        send_command(requests)
        sleep(1)
        cpu_pct = psutil.cpu_percent(interval=None, percpu=False)
        cpu_global = int(cpu_pct)
        request = "\nCpuUsage=" + str(math.trunc(cpu_global))
        send_command(request)
        sleep(1)
        set_time(datetime.now())
        sleep(1)
        set_max()
        sleep(1)
        set_free()
        sleep(1)


def main():
    start('/dev/ttyUSB0')


if __name__ == "__main__":
    main()