#!/bin/bash -e

case "$1" in
    s) DEV='@DEFAULT_AUDIO_SINK@' ;;
    m) DEV='@DEFAULT_AUDIO_SOURCE@' ;;
    *) exit 1 ;;
esac

read -r _ CUR MUTE < <(wpctl get-volume "$DEV")
CUR=$((10#${CUR/./}))

if [ "$2" = m ]; then
    wpctl set-mute "$DEV" toggle
else
    case "$2" in
        +*|-*) wpctl set-volume -l 1.5 "$DEV" "$((CUR + $2))%" ;;
        '') echo "$CUR${MUTE:+ $MUTE}"; exit ;;
        *) wpctl set-volume "$DEV" "$2%" ;;
    esac
    if [ -n "$MUTE" ]; then
        wpctl set-mute "$DEV" 0
    fi
fi

touch "$XDG_RUNTIME_DIR/sbar/vol"