#!/bin/bash

mkdir -p ~/.wacom

name="Wacom One by Wacom M Pen stylus"

map()
{
	xsetwacom --set "$name" MapToOutput  "$1"
	echo $1 > ~/.wacom/map
	osdc "Wacon map to:" "$1" --to=display
}

echo_maped()
{
	read x0 y0 < ~/.wacom/point_0
	read x1 y1 < ~/.wacom/point_1
	X0=$(( $x0 < $x1 ? $x0 : $x1 ))
	X1=$(( $x0 > $x1 ? $x0 : $x1 ))
	Y0=$(( $y0 < $y1 ? $y0 : $y1 ))
	Y1=$(( $y0 > $y1 ? $y0 : $y1 ))
	(( $X1 - $X0 > 100 )) && (( $Y1 - $Y0 > 100 )) && echo $(( $X1 - $X0 ))x$(( $Y1 - $Y0 ))+$X0+$Y0
}

if [[ "$1" == "init" ]]
then
	xinput  set-button-map "$name" 1 2 3 104 105 106 107
	xsetwacom --set "$name" Button 1 "button +1"
	xsetwacom --set "$name" Button 2 "button +3"
	#xsetwacom --set "$name" Button 3 "button +9"
	xsetwacom --set "$name" Button 3 "pan"
	xsetwacom --set "$name" "PanScrollThreshold" 20
fi

if [[ "$1" == "list" ]]
then
	xrandr | grep \ connected\ primary | awk '{print $4}'
	xrandr | grep \ connected | grep -v \ connected\ primary | awk '{print $3}'
	echo_maped
fi

if [[ "$1" == "next" ]]
then
	a=$($0 list | grep "$(cat ~/.wacom/map)" -A1)
	num=$(echo "$a" | wc -l )
	echo "$a"
	echo $num
	(( "$num" < 2 )) && map $($0 list | head -n 1)
	(( "$num" == 2 )) && map $( echo "$a" | tail -n 1)
	(( "$num" > 2 )) && osdc --color=red "Wacom next error" --to=display
fi

if [[ "$1" == "map" ]] && ( [[ "$2" == "0" ]] || [[ "$2" == "1" ]] )
then
	if [[ "$3" == "" ]]
	then
		eval $(xdotool getmouselocation --shell)
	else
		X="$3"
		Y="$4"
	fi
	echo $X $Y > ~/.wacom/point_$2
	osdc --to=display "Wacom point $2 to $X $Y"
	[[ $2 == 1 ]] && $0 outputmapped
fi


if [[ "$1" == "output" ]]
then
	a=$($0 list)
	num=$(echo "$a" | wc -l )
	echo "$a"
	echo $num
	(( "$num" >= "$2" )) && map $( echo "$a" | head -n $(( 1 + $2)) | tail -n 1)
	(( "$num" < "$2" )) && osdc --color=red "Wacom output error" --to=display
fi

if [[ "$1" == "outputmapped" ]]
then
	a=$( echo_maped )
	num=$(echo "$a" | wc -l )
	echo "$a"
	echo $num
	[[ "$a" == *"x"* ]] && map $( echo "$a" )
	[[ "$a" != *"x"* ]] && osdc --color=red "Wacom mapped off" --to=display
fi