#!/bin/bash
 ###########################################################################
# Copyright 2017 IoT.bzh
#
# author: Sebastien Douheret <sebastien@iot.bzh>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
###########################################################################

# Install XDS agent as a user systemd service

DESTDIR=${DESTDIR:-/opt/AGL/xds/agent}
DESTDIR_WWW=${DESTDIR_WWW:-${DESTDIR}/www}

ROOT_SRCDIR=$(cd $(dirname "$0")/.. && pwd)

install() {
    mkdir -p "${DESTDIR}" && cp "${ROOT_SRCDIR}/bin/*" "${DESTDIR}" || exit 1
    mkdir -p "${DESTDIR_WWW}" && cp -a "${ROOT_SRCDIR}/webapp/dist/*" "${DESTDIR_WWW}" || exit 1

    cp -a "${ROOT_SRCDIR}/conf.d/etc/xds" /etc/ || exit 1
    cp "${ROOT_SRCDIR}/conf.d/etc/default/xds-agent" /etc/default/ || exit 1

    FILE=/etc/profile.d/xds-agent.sh
    sed -e "s;%%XDS_INSTALL_BIN_DIR%%;${DESTDIR};g" "${ROOT_SRCDIR}/conf.d/${FILE}" > ${FILE} || exit 1

    FILE=/usr/lib/systemd/user/xds-agent.service
    sed -e "s;/opt/AGL/xds/agent;${DESTDIR};g" "${ROOT_SRCDIR}/conf.d/${FILE}" > ${FILE} || exit 1

    echo ""
    echo "To enable xds-agent service, execute:      systemctl --user enable xds-agent"
    echo "and to start xds-agent service, execute:   systemctl --user start xds-agent"
}

uninstall() {
    rm -rf "${DESTDIR}"
    rm -f /etc/xds-agent /etc/profile.d/xds-agent.sh /usr/lib/systemd/user/xds-agent.service
}

if [ "$1" == "uninstall" ]; then
    echo -n "Are-you sure you want to remove ${DESTDIR} [y/n]? "
    read answer
    if [ "${answer}" = "y" ]; then
        uninstall
        echo "xds-agent sucessfully uninstalled."
    else
        echo "Uninstall canceled."
    fi
else
    install
fi