#!/usr/bin/env bash

readonly CURRENT_VOLUME_CMD='pactl get-sink-volume @DEFAULT_SINK@ | head -n 1 | cut -f 2 -d"/"'
readonly VOLUME_UP_CMD="pactl set-sink-volume @DEFAULT_SINK@ +5%"
readonly VOLUME_DOWN_CMD="pactl set-sink-volume @DEFAULT_SINK@ -5%"
readonly MUTE_CMD="pactl set-sink-mute @DEFAULT_SINK@ toggle"
readonly CHECK_MUTE_CMD="pactl get-sink-mute @DEFAULT_SINK@"

ACTION="$1"

check_if_active_notification () {
	if makoctl list | grep -q -E 'Notification[[:space:]].*Volume'
	then
		makoctl list | grep -E 'Notification[[:space:]].*Volume' | cut -f 1 -d":" | cut -f 2 -d" "
	fi
}

volume_up () {
    eval "${VOLUME_UP_CMD}"
}

volume_down () {
	eval "${VOLUME_DOWN_CMD}"
}

toggle_mute() {
	eval "${MUTE_CMD}"
}

get_current_volume () {
	# Check if mute first 
	mute=$(eval "${CHECK_MUTE_CMD}")
	if [[ "$mute" == "Mute: yes" ]]; then
		echo "Muted"
	else
		eval "${CURRENT_VOLUME_CMD}"
	fi
}

send_notification () {
	current_volume=$(get_current_volume)
	active_notification=$(check_if_active_notification)
	if [ -z "$active_notification" ]; then
		notify-send -t 2000 "Volume" "${current_volume}" 
	else
		notify-send -r ${active_notification} -t 2000 "Volume" "${current_volume}" 
	fi
}

if [[ "$ACTION" == "up" ]]; then
	volume_up
	send_notification
elif [[ "$ACTION" == "down" ]]; then
	volume_down
	send_notification
elif [[ "$ACTION" == "mute" ]]; then
	toggle_mute
	send_notification
fi