monado-hmd-on.sh

#!/bin/sh

hmd_on() {
	expect <<EOF
spawn monado-cli probe
expect "Sleep until the HMD display is powered up"
sleep 2
exit
EOF

	MONITOR="$(get_hmd_monitor)"
	xrandr --output "$MONITOR" --prop --set non-desktop 0
	xrandr --output "$MONITOR" --mode 4320x2160 --right-of eDP-1-1
}

hmd_off() {
	xrandr --output "$MONITOR" --off
	xrandr --output "$MONITOR" --prop --set non-desktop 1
	monado-cli probe > /dev/null
}

get_hmd_monitor() {
	xrandr | grep -B1 4320x2160 | grep DisplayPort | cut -f1 -d' '
}

get_hmd_status() {
	local status="$(xrandr | grep "$MONITOR")"

	[ -n "$MONITOR" ] && [ -n "$status" ] && {
		case "$status" in
			*disconnected*)
				echo "disconnected" && return 0
				;;
			*connected*)
				echo "connected" && return 0
				;;
			*)
				;;
		esac
	}

	echo "unknown"
	return 1
}

hmd_toggle() {
	local status="$(get_hmd_status)"

	case "$status" in
		connected)
			hmd_off
			;;
		disconnected)
			hmd_on
			;;
		*)
			;;
	esac		
}

MONITOR="$(get_hmd_monitor)"

case "$1" in
	"on")
		hmd_on
		;;
	"off")
		hmd_off
		;;
	"toggle"|"")
		if [ -z "$MONITOR" ]; then
			hmd_on
		else
			hmd_toggle
		fi
		;;
	*)
		echo "unknown command"
		exit 1
		;;
esac