#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# A script to easily locate mesh peers and start communicating

# License
# =======
#
# Copyright (C) 2015 Bob Mottram <bob@robotics.uk.to>
#
# This program 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
# (at your option) any later version.
#
# This program 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.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

IRC_PORT=6697
PEERS_FILE=/tmp/meshpeers.txt

if [ ! -f /usr/bin/batman ]; then
    echo 'Mesh networking is not configured on your system'
    echo 'Run freedombone-client to install the necessary packages'
    exit 1
fi

if [ ! -f /tmp/meshtype ]; then
    sudo batman start
    if [ ! "$?" = "0" ]; then
        exit 2
    fi
fi

avahi-browse -at | awk -F ' ' '{print $4}' > $PEERS_FILE

if [ ! -f $PEERS_FILE ]; then
   echo 'No peers were found'
   exit 0
fi

ctr=0
while IFS='' read -r line || [[ -n "$line" ]]; do
    ctr=$((ctr + 1))
done < "$PEERS_FILE"

if [ ${ctr} -lt "2" ]; then
   echo 'No peers were found'
   exit 0
fi

clear
echo ''
echo ".---.                  .              .                   "
echo "|                      |              |                   "
echo "|--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-. "
echo "|    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-' "
echo "'    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'"
echo '                   M E S H   N E T W O R K'
echo ''
echo 'Please choose a peer to connect to:'
idx=1
while IFS='' read -r line || [[ -n "$line" ]]; do
    echo "    $idx. $line"
    idx=$((idx + 1))
done < "$PEERS_FILE"

peer_index=0
read peer_index

# if no selection made
if [ ! $peer_index ]; then
    echo 'Nothing was selected'
    echo ''
    exit 0
fi

# get the avahi domain name
AVAHI_DOMAIN=
idx=1
while IFS='' read -r line || [[ -n "$line" ]]; do
    if [ ${idx} -eq "$peer_index" ]; then
        AVAHI_DOMAIN=${line}.local
    fi
    idx=$((idx + 1))
done < "$PEERS_FILE"

if [ ! $AVAHI_DOMAIN ]; then
    echo 'No domain name'
    exit 3
fi

# Connect to IRC
if [ ! -f /usr/bin/irssi ]; then
    if [ -f /usr/bin/mumble ]; then
        mumble &
        exit 0
    fi
    echo 'You need irssi and/or mumble installed on your system'
    sudo batman stop
    exit 4
fi

if [ ! -f /usr/bin/mumble ]; then
    if [ -f /usr/bin/irssi ]; then
        irssi -c $AVAHI_DOMAIN -p $IRC_PORT -n $USER
        exit 0
    fi
    echo 'You need irssi and/or mumble installed on your system'
    sudo batman stop
    exit 4
fi

echo ''
echo 'Choose communication service:'
echo '    1. VoIP + Instant Messaging'
echo '    2. IRC (WARNING: not encrypted)'
echo ''

read peer_index

# if no selection made
if [ ! $peer_index ]; then
    echo 'Nothing was selected'
    echo ''
    exit 0
fi

if [[ $peer_index == 1 ]]; then
    echo ''
    echo 'To setup for the first time click "Add New", then set:'
    echo "    Label:    $AVAHI_DOMAIN"
    echo "    Address:  $AVAHI_DOMAIN"
    echo '    Port:     64738'
    echo "    Username: $USER"
    echo ''
    echo 'Press Enter to continue.'
    echo ''
    read peer_index
    mumble &
else
    irssi -c $AVAHI_DOMAIN -p $IRC_PORT -n $USER
fi

exit 0