#!/bin/bash
# Collection of scripts to deploy a server hosting several open-source games
# Copyright (C) 2022  Jarno van der Kolk
#
# 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 <https://www.gnu.org/licenses/>.

set -e

if [ -e /etc/systemd/system/lix.service ]; then
  systemctl stop lix
fi

if [ -z ${lix_version} ] || [ "${lix_version}" = "latest" ]; then
  lix_version=$(curl -s https://api.github.com/repos/SimonN/LixD/releases/latest | jq -r '.["tag_name"]' | cut -c2-)
fi

# Install Lix
mkdir -p ${TMPDIR:-/tmp}/lix-build
cd ${TMPDIR:-/tmp}/lix-build
if [ -d LixD ]; then
  rm -rf LixD
fi
git clone --branch v${lix_version} https://github.com/SimonN/LixD.git
cd LixD/src/server
dub build
mkdir -p /opt/lix-${lix_version}
cp ../../bin/lixserv /opt/lix-${lix_version}
rm -rf ${TMPDIR:-/tmp}/lix-build

# Create SystemD unit
cat > /etc/systemd/system/lix.service <<EOF
[Unit]
Description=Lix server
After=network.target

[Service]
ExecStart=/opt/lix-${lix_version}/lixserv
Restart=on-failure
User=${systemuser}

[Install]
WantedBy=multi-user.target
EOF

systemctl daemon-reload
systemctl enable --now lix.service

# Add firewall rules
firewall-cmd --zone=public --add-port=22934/udp --permanent