#!/usr/bin/env bash

set -euo pipefail

stateDir="${STORMUX_ALSA_STATE_DIR:-/home/stormux/.local/state/alsa}"
stateFile="${stateDir}/asound.state"
action="${1:-}"

usage() {
    printf 'Usage: %s restore|store\n' "${0##*/}" >&2
}

case "$action" in
    restore)
        if [[ ! -f "$stateFile" ]]; then
            exit 0
        fi
        exec /usr/bin/alsactl -f "$stateFile" restore
        ;;
    store)
        install -d -o root -g root -m 755 "$stateDir"
        exec /usr/bin/alsactl -f "$stateFile" store
        ;;
    *)
        usage
        exit 2
        ;;
esac