#!/bin/bash

EXTERN="VGA1"
INTERN="LVDS1"

if [ $# -lt 1 ]; then
    echo "monsetup <off|clone|second>"
    exit 1
fi

bspwm_reset_desktops() {
    bspc monitor $EXTERN -d 1 2 3 4 5 6 7 8 9
}

bspwm_mv_win() {
    for wid in $(bspc query -W -m $EXTERN); do
        bspc window "$wid" -m $INTERN
    done
}

restore_wallpapers() {
    nitrogen --restore
}

bspwm_config_second() {
    if [ "$1" != "1" ]; then
        bspwm_mv_win
    else
        bspwm_reset_desktops
    fi
}

xrandr_off()    { xrandr --output VGA1 --off --output LVDS1 --primary --auto ; }
xrandr_clone()  { xrandr --output VGA1 --auto --same-as LVDS1 --scale-from 1366x768 --output LVDS1 --primary --auto ; }
xrandr_second() { xrandr --output VGA1 --auto  --right-of LVDS1 --output LVDS1 --primary --auto ; }

mode_off() {
    bspwm_config_second 0
    xrandr_off
    restore_wallpapers
}

mode_clone() {
    bspwm_config_second 0
    xrandr_off
    xrandr_clone
    restore_wallpapers
}

mode_second() {
    xrandr_off
    xrandr_second
    bspwm_config_second 1
    restore_wallpapers
}

case $1 in
    off|clone|second)
        mode_$1
        ;;
    *)
        echo No mode named $1
        exit 1
        ;;
esac