#!/bin/bash
set -xeuo pipefail

function steam() {
    # for systemd, so it can terminate the process (for other things sudo would have been enough)
    setpriv --reuid=steam --regid=steam --init-groups "$@" <&0
    export HOME=/opt/l4d2/steam
}

declare -A addons=(
    [Ions_Vocalizer]=698857882
    [EMS_Admin_System]=2524204971
)

function install_addon() {
    local overlay="$1"
    local addon_name="$2"
    local addon_id="${addons[${addon_name}]}"
    steam mkdir -p "/opt/l4d2/overlays/${overlay}/left4dead2/addons"
    test -f "/opt/l4d2/overlays/${overlay}/left4dead2/addons/${addon_id}.vpk" || \
        steam /opt/l4d2/steam-workshop-download "${addon_id}" --out "/opt/l4d2/overlays/${overlay}/left4dead2/addons"
}

function install_admin_system() {
    local overlay="$1"
    install_addon "${overlay}" EMS_Admin_System
    steam mkdir -p "/opt/l4d2/overlays/${overlay}/left4dead2/ems/admin system"
    steam echo "STEAM_1:0:12376499" > "/opt/l4d2/overlays/${overlay}/left4dead2/ems/admin system/admins.txt"
}

function install_tickrate_enabler() {
    local overlay="$1"
    steam mkdir -p "/opt/l4d2/overlays/${overlay}/left4dead2/addons"
    for file in tickrate_enabler.dll tickrate_enabler.so tickrate_enabler.vdf
    do
        curl -L "https://github.com/SirPlease/L4D2-Competitive-Rework/raw/refs/heads/master/addons/${file}" -o "/opt/l4d2/overlays/${overlay}/left4dead2/addons/${file}"
    done
}