#!/bin/bash


TARGET=/etc/OliveTin/entities/servers.yaml
TARGET_TEMP=${TARGET}.tmp

test -e ${TARGET_TEMP} && rm -f ${TARGET_TEMP}

while read -r line
do
        clean_line=${line%%#*}
        ip=${clean_line%%[[:space:]]*}
        name=${clean_line##*[[:space:]]}
        status=offline
        if [ "$ip" != "" -a "$name" != "" -a "$ip" != "127.0.0.1" -a "$ip" != "::1" ]
        then
                (ping -c 1 -w 1 $ip 2> /dev/null > /dev/null
                if [ $? -eq 0 ]
                then
                        status=online
                fi
                echo "
- name: $name
  ip: $ip
  status: $status" >> ${TARGET_TEMP})
        fi
done < "/etc/hosts"

wait
test -e ${TARGET_TEMP} && mv ${TARGET_TEMP} ${TARGET}