#!/bin/bash
# this script only makes sense if there is a good people counter installed
if [ "$1" = "closed" ] && [ "$2" = "open" ]
then
  p="$(cat /run/presency)"
  if [ "$p" != "0" ]
  then
    logger $(basename $0) There are $p people, closed door from inside. Waiting 1 min. 
    sleep 60
    p="$(cat /run/presency)"
    if [ "$p" = "0" ]
    then
      logger $(basename $0) There are $p people, after 1 min wait. All OK.
    else
      logger $(basename $0) There are $p people, after 1 min. Maybe ALARM
    fi
  else
    logger $(basename $0) There are $p people, correctly closed door from outside. All OK.
  fi &
fi