#!/bin/bash
#
# fhem-getstate script for reading / writing DigiTemp values
# Copyright (C) 2008 Martin Fischer <m_fischer@gmx.de>. All rights reserved.
#
# License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
#
# This is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# any later version.
#
# This source is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.


NCAT=`which netcat`

HOST="localhost"
PORT="7072"

# Functions
function version {
  echo "fhem-getstate, Version 1.0
Copyright (C) 2008 Martin Fischer <m_fischer@gmx.de>
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Martin Fischer"
  exit $1
}

function longhelp {
 echo "\
Usage: fhem-getstate [OPTION] DEVICE

Connect to a FHEM-Server running on 'localhost 7072' and print the status for
the given DEVICE as a space seperated list for use in e.g. Cacti.

Mandatory arguments:
  -d DEVICE   print the status for DEVICE as defined in FHEM

Optional:
  -s SERVER   Resolvable Hostname or IP address of FHEM (default: localhost)
  -p PORT     Listening Port of FHEM (default: 7072)
  -q          quiet mode
  -h          show this help
  -v          show version

Reports bugs to <m_fischer@gmx.de>.
"
  exit $1
}

function usage {
  echo >&2 "Usage: fhem-getstate [-s <server>] [-p <port>] -d <devspec> [-h] [-v]" && exit $1;
}

# check for arguments
if (( $# <= 0 )); then
  usage 1;
fi

# get options
while getopts "s:p:d:hv" option; do
  case $option in
    d) DEV=$OPTARG;;
    h) longhelp 0;;
    p) PORT=$OPTARG;;
    s) HOST="$OPTARG";;
    v) version 0;;
    ?) usage 1;;
  esac
done

(echo "getstate ${DEV}" | $NCAT -w1 ${HOST} ${PORT})

exit 0;