#!/bin/bash

date=$(date +%h-%m@%H:%M)
log=$PWD/network-status.log

function fail {
  cat /tmp/network-status >> $log
  echo $1 >> $log
  sleep 5
  shutdown -r 2
 exit 1
}

function retry {
  local n=1
  local max=3
  local delay=300
  local date=$(date +%h-%m@%H:%M)

  while true; do
    "$@" > /tmp/network-status && break || {
       if [[ $n -lt $max ]]; then
         ((n++))
         sleep $delay;
       else
         fail "The network failed after $n attempts on $date."
       fi
    }
  done
}

retry ping -c 2 google.com
echo "Network is up at $date" >> $log