#!/usr/bin/env bash
#
# dmenu-splitmonitor.sh
#
if [ $# -eq 0 ]; then
    echo "Supply the width of the center monitor as an argument"
    echo "e.g. dmenu-splitmonitor-custom.sh 1400"
    exit
fi

widthCenter=$1

if [ "$widthCenter" = "Default" ]; then
    widthCenter=1500
fi


let widthLeft=(3840-$widthCenter)/2
let positionRight=widthCenter+widthLeft
let widthRight=(3840-$widthCenter)/2
if [ "$widthCenter" -eq 1920 ]; then
    let widthRight=0
    let widthLeft=1920
    let positionRight=0
fi

echo "$widthLeft @ 0"
echo "$widthCenter @ $widthLeft"
echo "$widthRight @ $positionRight"

xrandr | grep -E 'HDMI-1 connected( primary)? 3840x1080' &> /dev/null
if [ $? == 0 ]; then
    echo "Deleting existing"
    xrandr --delmonitor HDMI-1-3
    xrandr --delmonitor HDMI-1-1
    xrandr --delmonitor HDMI-1-2
    if [ "$widthCenter" != "Full" ]; then
        echo "Configuring output"

        xrandr --setmonitor HDMI-1-1 $widthLeft/255x1080/286+0+0 none
        xrandr --setmonitor HDMI-1-2 $widthCenter/255x1080/286+$widthLeft+0 none
        if [ $widthRight -gt 0 ]; then
            xrandr --setmonitor HDMI-1-3 $widthRight/255x1080/286+$positionRight+0 none
        fi

        xrandr --output HDMI-1 --auto --left-of eDP-1
    fi
    echo "Reloading"
    i3-msg reload

fi