#!/usr/bin/python3

import os
import subprocess
import time

if not os.path.exists("/var/lib/linuxmint/mintupdate-automatic-upgrades-enabled"):
    exit(0)

optionsfile = "/etc/mintupdate-automatic-upgrades.conf"
logfile = "/var/log/mintupdate.log"
power_connectfile="/sys/class/power_supply/AC/online"
log = open(logfile, "a")
log.write("\n-- Automatic Upgrade starting %s:\n" % time.strftime('%a %d %b %Y %H:%M:%S %Z'))
log.flush()

pkla_source = "/usr/share/linuxmint/mintupdate/automation/99-mintupdate-temporary.pkla"
pkla_target = "/etc/polkit-1/localauthority/90-mandatory.d/99-mintupdate-temporary.pkla"
try:
    power_supply_file = open(power_connectfile)
    powersupply = power_supply_file.read()[0]=='1'
    power_supply_file.close()
except:
    powersupply = True
    log.write(power_connectfile+" not found. Ignore power supply check.")
if powersupply:
    try:
        # Put shutdown and reboot blocker into place
        os.symlink(pkla_source, pkla_target)
    except:
        pass

    try:
        # Parse options file
        arguments = []
        if os.path.isfile(optionsfile):
            with open(optionsfile) as options:
                for line in options:
                    line = line.strip()
                    if line and not line.startswith("#"):
                        arguments.append(line)

        # Run mintupdate-cli through systemd-inhibit
        cmd = ["/bin/systemd-inhibit", '--why="Performing automatic updates"',
               '--who="Update Manager"',  "--what=shutdown", "--mode=block",
               "/usr/bin/mintupdate-cli", "upgrade", "--refresh-cache", "--yes"]
        cmd.extend(arguments)
        subprocess.run(cmd, stdout=log, stderr=log)

    except:
        import traceback
        log.write("Exception occurred:\n")
        log.write(traceback.format_exc())

    try:
        # Remove shutdown and reboot blocker
        os.unlink(pkla_target)
    except:
        pass

    log.write("-- Automatic Upgrade completed\n")
else:
    log.write("-- Power supply not connected, abort automatic update.\n")
log.close()