#!/usr/bin/env sh

# xwin-sfxd v0.3
# play sfx and spam notifications when certain system events occur

# prevents chatty udev output from spamming sfx
debounce() {
	[ $(ps -aux | grep -c 'paplay') -gt 1 ]
}

# get properties from udev device path
udev_usb_query() (
	device="$(echo "$1" | head -n 1 | egrep -o '(/.+)+(=? )' | tr -d ' ')"
	eval $(udevadm info -q property -x -p "$device")
	echo "$VENDOR_ID:$ID_MODEL_ID"
)
udev_psu_query() (
	device="$(echo "$1" | head -n 1 | egrep -o '(/.+)+(=? )' | tr -d ' ')"
	eval $(udevadm info -q property -x -p "$device")
	echo "$POWER_SUPPLY_STATUS"
)

# randomly pitched startup sound
# likely to play at xinit startup
rand=$(( ($(tr -cd '0-9' < /dev/random | dd bs=1 count=1 2>/dev/null) % 10) * 100))
sfx-play -c btn14 | sox - -t wav - pitch -$rand vol .75 | paplay -p &
sfx-play -c img10 | sox - -t wav - pitch -$rand speed 4 vol 2 | paplay -p &

udevadm monitor --udev --subsystem-match=usb \
	--subsystem-match=power_supply --subsystem-match=msr \
	| while read -r line; do
	debounce && continue
	case "$line" in
		# suspend/resume
		*"remove"*"msr"*)
			sfx-play -c btn11 | sox - -t wav - pitch -400 vol 0.5 | paplay -p &
			sfx-play -c btn06 | sox - -t wav - pitch -1000 vol 0.5 | paplay -p &
			sfx-play -c img10 | sox - -t wav - pitch -2000 speed 4  | paplay -p &
			;;

		# hardware connect/disconnect
		*"usb"*)
			device="$(udev_usb_query "$line")" > /dev/null 2>&1
			case "$line" in
				*"add"*)
					{ printf '✚✚✚ USB device: '; lsusb -d "$device"; } | notify-send -t 1.6
					sfx-play -c img10 | sox - -t wav - pitch -3000 speed 4 | paplay -p &
					sfx-play othr01 &;;
				*"remove"*)
					echo "❌❌❌ $line" | notify-send -t 1.2
					sfx-play -c img10 | sox - -t wav - pitch -3000 speed 4 reverse | paplay -p &
					sfx-play othr02 &;;
			esac;;

		# AC adapter connect/disconnect
		*"change"*"power_supply/BAT0"*)
			sleep 1 # charging state updates pretty slowly
			if [ "$(udev_psu_query "$line")" = 'Discharging' ]; then
				notify-send -t 1.2 '↯ Battery discharging.'
				sfx-play -c img10 | sox - -t wav - pitch -2000 speed 4 reverse | paplay -p &
				sfx-play btn11 &
			else
				notify-send -t 1.2 '🔌 Connected to power supply.'
				sfx-play -c img10 | sox - -t wav - pitch -2000 speed 4 | paplay -p &
				sfx-play btn12 &
		fi;;
	esac
done