#!/usr/bin/env bash
#
#	kbdd_layout is a script that parse layout with kbdd in real time
#	Copyright (C) 2016 Anton Karmanov <starcom24@gmail.com>
#
#	This program is free software: you can redistribute it and/or modify
#	it under the terms of the GNU General Public License as published by
#	the Free Software Foundation, either version 3 of the License, or any
#	later version.
#
#	This program is distributed in the hope that it will be useful,
#	but WITHOUT ANY WARRANTY; without even the implied warranty of
#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#	GNU General Public License for more details.
#
#	You should have received a copy of the GNU General Public License
#	along with this program.  If not, see <http://www.gnu.org/licenses/>.

# In case user is restarting block after making layout changes
# e.g. via setxkbmap, reload kbdd
killall kbdd 2>/dev/null
kbdd >/dev/null || exit 1

# Get initial state of layout
N=$( dbus-send --print-reply=literal --dest=ru.gentoo.KbddService\
    /ru/gentoo/KbddService ru.gentoo.kbdd.getCurrentLayout 2>/dev/null |\
    sed -un 's/^.*uint32 //p' )

# In case dbus service wasn't available yet, poll until service is ready
while [[ -z "$N" ]]; do
    sleep .1
    N=$( dbus-send --print-reply=literal --dest=ru.gentoo.KbddService\
        /ru/gentoo/KbddService ru.gentoo.kbdd.getCurrentLayout 2>/dev/null |\
        sed -un 's/^.*uint32 //p' )
done
echo $( dbus-send --print-reply=literal --dest=ru.gentoo.KbddService \
	/ru/gentoo/KbddService ru.gentoo.kbdd.getLayoutName uint32:$N )

# Parse dbus output
dbus-monitor "interface='ru.gentoo.kbdd',member='layoutNameChanged'" |\
	sed -un '0~2p' | sed -un 's:.*string "\(.*\)".*:\1:p'  | sed -u '/:/d'