#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# batman adv mesh functions
#
# License
# =======
#
# Copyright (C) 2014-2016 Bob Mottram <bob@freedombone.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

VARIANTS=''

ENABLE_BATMAN="no"
BATMAN_CELLID='any'

batman_variables=(MY_USERNAME
                  BATMAN_CELLID)

function install_interactive_batman {
    echo -n ''
    APP_INSTALLED=1
}

function change_password_batman {
    echo -n ''
}

function configure_firewall_for_batman {
    if [[ $(is_completed $FUNCNAME) == "1" ]]; then
        return
    fi
    if [[ $ENABLE_BATMAN != "yes" ]]; then
        return
    fi

    function_check save_firewall_settings
    save_firewall_settings
    mark_completed $FUNCNAME
}

function reconfigure_batman {
    echo -n ''
}

function upgrade_batman {
    echo -n ''
}

function backup_local_batman {
    echo -n ''
}

function restore_local_batman {
    echo -n ''
}

function backup_remote_batman {
    echo -n ''
}

function restore_remote_batman {
    echo -n ''
}

function remove_batman {
    ${PROJECT_NAME}-mesh-install -f batman --remove yes
    if [ ! "$?" = "0" ]; then
        echo $'Failed to remove batman'
        exit 79353
    fi
    remove_completion_param install_batman
    remove_completion_param configure_firewall_for_batman
}

function mesh_install_batman {
    chroot "$rootdir" apt-get -yq install iproute bridge-utils libnetfilter-conntrack3 batctl
    chroot "$rootdir" apt-get -yq install python-dev libevent-dev ebtables python-pip git
    chroot "$rootdir" apt-get -yq install wireless-tools rfkill

    if ! grep -q "batman_adv" $rootdir/etc/modules; then
        echo 'batman_adv' >> $rootdir/etc/modules
    fi

    BATMAN_SCRIPT=$rootdir/var/lib/batman

    if [ -f /usr/local/bin/${PROJECT_NAME}-mesh-batman ]; then
        cp /usr/local/bin/${PROJECT_NAME}-mesh-batman $BATMAN_SCRIPT
    else
        cp /usr/bin/${PROJECT_NAME}-mesh-batman $BATMAN_SCRIPT
    fi

    BATMAN_DAEMON=$rootdir/etc/systemd/system/batman.service
    echo '[Unit]' > $BATMAN_DAEMON
    echo 'Description=B.A.T.M.A.N. Advanced' >> $BATMAN_DAEMON
    echo 'After=network.target' >> $BATMAN_DAEMON
    echo '' >> $BATMAN_DAEMON
    echo '[Service]' >> $BATMAN_DAEMON
    echo 'RemainAfterExit=yes' >> $BATMAN_DAEMON
    echo "ExecStart=/var/lib/batman start" >> $BATMAN_DAEMON
    echo "ExecStop=/var/lib/batman stop" >> $BATMAN_DAEMON
    echo 'Restart=on-failure' >> $BATMAN_DAEMON
    echo 'SuccessExitStatus=3 4' >> $BATMAN_DAEMON
    echo 'RestartForceExitStatus=3 4' >> $BATMAN_DAEMON
    echo '' >> $BATMAN_DAEMON
    echo '# Allow time for the server to start/stop' >> $BATMAN_DAEMON
    echo 'TimeoutSec=300' >> $BATMAN_DAEMON
    echo '' >> $BATMAN_DAEMON
    echo '[Install]' >> $BATMAN_DAEMON
    echo 'WantedBy=multi-user.target' >> $BATMAN_DAEMON
    chroot "$rootdir" systemctl enable batman
}

function install_batman {
    if [ $INSTALLING_MESH ]; then
        mesh_install_batman
        return
    fi
    if [[ $ENABLE_BATMAN != "yes" ]]; then
        return
    fi

    ${PROJECT_NAME}-mesh-install -f batman
    if [ ! "$?" = "0" ]; then
        echo $'Failed to install batman'
        exit 72524
    fi

    if ! grep -q "Mesh Networking (B.A.T.M.A.N)" /home/$MY_USERNAME/README; then
        echo '' >> /home/$MY_USERNAME/README
        echo '' >> /home/$MY_USERNAME/README
        echo 'Mesh Networking (B.A.T.M.A.N)' >> /home/$MY_USERNAME/README
        echo '=============================' >> /home/$MY_USERNAME/README
        echo "Mesh ESSID: $WIFI_SSID" >> /home/$MY_USERNAME/README
        echo "Mesh cell ID: $BATMAN_CELLID" >> /home/$MY_USERNAME/README
        echo "Mesh wifi channel: $WIFI_CHANNEL" >> /home/$MY_USERNAME/README
        chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
        chmod 600 /home/$MY_USERNAME/README
    fi

    function_check configure_firewall_for_batman
    configure_firewall_for_batman
    APP_INSTALLED=1
}

# NOTE: deliberately no exit 0