#!/bin/bash

set -xeuo pipefail

name=$1
overlay=$2
port=$3
params=$4

function steam() {
    # für systemd, damit es den prozess beenden kann
    setpriv --reuid=steam --regid=steam --init-groups "$@"
    export HOME=/opt/l4d2/steam
}

mountpoint -q "/opt/l4d2/servers/$name/merged" && umount "/opt/l4d2/servers/$name/merged"
steam rm -rf "/opt/l4d2/servers/$name"

steam mkdir -p \
  "/opt/l4d2/servers/$name" \
  "/opt/l4d2/servers/$name/work" \
  "/opt/l4d2/servers/$name/upper" \
  "/opt/l4d2/servers/$name/merged"

mount -t overlay overlay \
  -o "lowerdir=/opt/l4d2/overlays/$overlay:/opt/l4d2/installation,upperdir=/opt/l4d2/servers/$name/upper,workdir=/opt/l4d2/servers/$name/work" \
  "/opt/l4d2/servers/$name/merged"

# TODO: pass config file paht instead of expecting it here
steam mv "/opt/l4d2/servers/$name/merged/left4dead2/cfg/server.cfg" "/opt/l4d2/servers/$name/merged/left4dead2/cfg/server_original.cfg"
steam touch "/opt/l4d2/servers/$name/merged/left4dead2/cfg/server.cfg"
echo "exec server_original.cfg" > "/opt/l4d2/servers/$name/merged/left4dead2/cfg/server.cfg"
cat "/opt/l4d2/configs/$name.cfg" >> "/opt/l4d2/servers/$name/merged/left4dead2/cfg/server.cfg"

steam "/opt/l4d2/servers/$name/merged/srcds_run" -norestart -pidfile "/opt/l4d2/servers/$name/pid" -game left4dead2 -ip 0.0.0.0 -port "$port" +hostname "Crone_$name" $params +map c1m1_hotel