#!/bin/sh

[ -z "$1" ] && exit # If $1 is left, hovers in the bottom left, if right, the bottom right
current=$(xdotool getwindowfocus)
dims="$(xrandr --screen 0 | grep ' connected' | grep -v '^\s*$' | sed 's/ primary//' | cut -d ' ' -f3)"
horizontal_offset="$( echo "$dims" | cut -d '+' -f2 )"
mouse_location_horizontal="$(xdotool getmouselocation | grep -Po 'x:\d{1,5}' | tr -d 'x:')"
#var passed is an accumulator for screens that fit the current mouse location or less
for screen in $horizontal_offset; do
	[ "$screen" -lt "$mouse_location_horizontal" ] && passed="$(printf '%s\n%s\n' "$passed" "$screen")"
done
#take max of all screens to the left of mouse
offset_of_screen_mouse_is_on="$(echo "$passed" | sort -n | tail -n1)"
dim="$( echo "$dims" | grep "+$offset_of_screen_mouse_is_on+" )"
screenwidth="$( echo "$dim" | grep -Eo '^[0-9]{1,5}x' | tr -d 'x')"
screenheight="$( echo "$dim" | grep -Eo 'x[0-9]{1,5}+' | tr -d 'x+')"

#Adjust here for larger/smaller windows
newwidth=$(( 2 * screenwidth / 5))
newheight=$(( 2 * screenheight / 5))
#fit your borderwidth setup of your WM or windows could bleed over to other display
borderwidth=2

case "$1" in
	left)	horizontal=$(( borderwidth ))
		vertical=$(( screenheight - newheight - 2 * borderwidth )) ;;
	right)	horizontal=$((  screenwidth - newwidth - 2 * borderwidth ))
		vertical=$(( screenheight - newheight  - 2 * borderwidth )) ;;
esac

xdotool windowsize "$current" $newwidth $newheight
xdotool windowmove "$current" $horizontal $vertical