#!/bin/sh
self=`basename $0`
: ${wait:=1h}
: ${delay:=60}  #secs between pings
auv=$1
case $auv in
 '') cat <<EOS >&2
Update logs from ESP riding on AUV when specified AUV is available on network
Delays $wait between successful updates
Additional optional args are passed directly into upsync
Example:
  $self lrauv-makai-cell   #upload from makai on cellular link
Note:
  This script never exits
EOS
  exit 2
esac

shift
echo >&2
echo -n "`date` -- Pinging $auv ... " >&2
while :; do
  ping -qc 1 -W $delay $auv >/dev/null
  ret=$?
  if [ $ret = 0 ]; then
    echo >&2
    echo "`date` -- upsync $*"
    ssh $auv onESP upsync "$@" || {
      sleep $delay
      continue
    }
    echo -n "`date` -- Waiting $wait ... " >&2
    sleep $wait
    echo >&2
    echo -n "`date` -- Pinging $auv ... " >&2
  elif [ $ret -gt 1 ]; then
    exit $ret
  fi
done