#! /bin/bash

# Note for future configuration: use arandr and save layout (direct xrandr calls)

# Needed exports and vars
#export DISPLAY=$(w -h -s | grep ":[0-9]\W" | head -1 | awk '{print $3}')
X_USER=$(w -h -s | grep ":[0-9]\W" | head -1 | awk '{print $1}')
X_UID=$(id -u ${X_USER})
export XAUTHORITY=/home/${X_USER}/.Xauthority

# Grep connected/disconnected monitors from xrandr
EXTRA_DISPLAY=$(xrandr | grep " connected" | grep -v "eDP1" | awk '{print $1}' | tr '\n' ' ')
DISCONNECTED_DISPLAY=$(xrandr | grep " disconnected" | awk '{print $1}')


# Make sure disconnected display are off
for display in ${DISCONNECTED_DISPLAY}; do
    xrandr --output ${display} --off
done

case "${EXTRA_DISPLAY}" in
    "")
        # Laptop screen only
        xrandr --output eDP1 --primary --mode 2560x1440 --pos 0x0 --rotate normal;;
    HDMI1\ )
        # Extra display
        xrandr --output eDP1 --primary --mode 2560x1440 --pos 0x0 --rotate normal --output HDMI1 --auto;;
    DP1-1\ DP1-2\ )
        # Docked, for whatever reason, need an extra step to disable laptop screen and use both dock ports...
        xrandr --output eDP1 --primary --mode 2560x1440 --pos 0x0 --rotate normal --output DP1-1 --mode 1920x1080 --pos 2560x180 --rotate normal --output DP1-2 --off
        xrandr --output eDP1 --off --output DP1-1 --primary --mode 1920x1080 --pos 0x0 --rotate normal --output DP1-2 --mode 1920x1080 --pos 1920x0 --rotate normal;;
    *)
        echo "auto-display: unknown configuration";;
esac