#!/bin/sh

set -u
set -e

# Your settings
#
WATCHDOG_TIME="99.9" # 0.1 - 99.9 Seconds
IRSEND="irsend -d /var/run/lirc/ya_usbir SEND_ONCE yaUsbIR_control C_WATCHDOG %s C_END"
#
# End of user config


trigger_watchdog(){
  # Calculate n1, n2 and n3 values
  eval $(bc <<EOF 2> /dev/null

watchdog = ${WATCHDOG_TIME}

if ((watchdog < 0.1) || (watchdog > 99.9) || (scale(watchdog) > 1)) {
  print "N1=0\n"
  print "N2=0\n"
  print "N3=0\n"
  print "OK=false\n"
  halt
}

watchdog = watchdog * 1000

scale = 0
n1 = watchdog / 10000
part = watchdog % 10000
n2 = part / 1000
part = part % 1000
n3 = part / 100

print "N1=",n1,"\n"
print "N2=",n2,"\n"
print "N3=",n3,"\n"
print "OK=true\n"

EOF
)

  if [ "${OK}" = "true" ]; then
    eval $(printf "${IRSEND} 2> /dev/null" "1 ${N1} ${N2} ${N3}") || return 1
  else
    return 1
  fi
}



deactivate_watchdog(){
  eval $(printf "${IRSEND} 2> /dev/null" "0") || return 1
}



case "${1}" in
  startup)
    trigger_watchdog || exit 1
  ;;
  started)
    trigger_watchdog || exit 1
  ;;
  shutdown)
    deactivate_watchdog || exit 1
  ;;
  running)
    trigger_watchdog || exit 1
  ;;
esac

exit 0