#!/bin/sh

if [ -z "$WAYLAND_DISPLAY" ]
then
    notification=dunst
else
    notification=mako
fi

# Use pulseaudio backend first (pulsemixer)
if command -v pulsemixer >/dev/null
then
    _notify() {
        volume=$(pulsemixer --get-volume)
        # I only have 2 channels :)
        left=$(echo "$volume" | cut -d' ' -f1)
        right=$(echo "$volume" | cut -d' ' -f2)
        average=$(((left+right)/2))
        notify-send -i "$HOME/.config/${notification}/speaker.png" "Volume: $average%"
    }

    case $1 in
    increase)
        pulsemixer --change-volume +5 && _notify
        ;;
    decrease)
        pulsemixer --change-volume -5 && _notify
        ;;
    toggle)
        pulsemixer --toggle-mute
        status=$(pulsemixer --get-mute)
        if [ "$status" -eq 1 ] || [ "$status" = "true" ]
        then
            notify-send -i "$HOME/.config/${notification}/mute.png" "Sound muted"
        else
            notify-send -i "$HOME/.config/${notification}/speaker.png" "Sound unmuted"
        fi
        ;;
    *)
        ;;
    esac
# Then fallback to the ALSA one (alsamixer + amixer)
else
    _notify_alsa() {
        volume=$(amixer get Master | sed -nre 's/.*\\[(.*%)\\].*/\\1/p')
        notify-send -i "$HOME/.config/${notification}/speaker.png" "Volume: $volume"
    }

    case $1 in
    increase)
        amixer set Master 5+ && _notify_alsa
        ;;
    decrease)
        amixer set Master 5- && _notify_alsa
        ;;
    toggle)
        amixer set Master toggle
        if amixer get Master | grep "off"
        then
            notify-send -i "$HOME/.config/${notification}/mute.png" "Sound muted"
        else
            notify-send -i "$HOME/.config/${notification}/speaker.png" "Sound unmuted"
        fi
        ;;
    *)
        ;;
    esac
fi