#!/bin/bash

# helper script for lightum
# (c)2012 Pau Oliva Fora - pof[at]eslack(.)org

WM="kde"

function get_backlight() {

        if [ "$1" == "kde" ]; then
                val=`dbus-send --session --type=method_call --print-reply --dest=org.kde.Solid.PowerManagement /org/kde/Solid/PowerManagement org.kde.Solid.PowerManagement.brightness |tail -n 1 |awk '{print $2}'`
                echo "$val"
        else
                val=`gdbus call --session --dest org.gnome.SettingsDaemon --object-path /org/gnome/SettingsDaemon/Power --method org.gnome.SettingsDaemon.Power.Screen.GetPercentage`
                val=`echo "$val" |cut -f 2 -d " " |sed -e "s/,)//g"`
                echo "$val"
        fi

}

function set_backlight() {

        if [ "$1" == "kde" ]; then
                dbus-send --session --type=method_call --print-reply --dest=org.kde.Solid.PowerManagement /org/kde/Solid/PowerManagement org.kde.Solid.PowerManagement.setBrightness int32:${2} >/dev/null
        else
                dbus-send --session --print-reply --dest="org.gnome.SettingsDaemon" /org/gnome/SettingsDaemon/Power org.gnome.SettingsDaemon.Power.Screen.SetPercentage uint32:${2} >/dev/null
        fi

}


for backlight in `seq 0 100` ; do

        echo -n "SET: ${backlight} GET: "
        set_backlight ${WM} ${backlight}
        sleep 1s
        get_backlight ${WM}

done