# vim:set et sts=4 sw=4:
#
# ibus-grc - The Input Bus polytonic Greek input method
#
# Copyright (c) 2011-2014 David Baer <david.a.baer@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 2, or (at your option)
# 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

# for python2
from __future__ import print_function

from gi.repository import IBus
from gi.repository import GLib
from gi.repository import GObject

import os
import sys
import getopt
import locale

from engine import EngineGRC

class IMApp:
    def __init__(self, exec_by_ibus):
        engine_name = "grc" if exec_by_ibus else "grc (debug)"
        self.__component = \
                IBus.Component.new("org.freedesktop.IBus.GRC",
                                   "GRC Component",
                                   "0.1.0",
                                   "GPL",
                                   "David A. Baer <david.a.baer@gmail.com>",
                                   "",
                                   "@prefix@/bin/ibus-engine-grc",
                                   "ibus-grc"
                                  )
        engine = IBus.EngineDesc.new("grc",
                                     engine_name,
                                     "Polytonic Greek",
                                     "grc",
                                     "GPL",
                                     "David A. Baer <david.a.baer@gmail.com>",
                                     "@prefix@/share/ibus-grc/icons/ibus-grc.svg",
                                     "us")
        self.__component.add_engine(engine)
        self.__mainloop = GLib.MainLoop()
        self.__bus = IBus.Bus()
        self.__bus.connect("disconnected", self.__bus_disconnected_cb)
        self.__factory = IBus.Factory.new(self.__bus.get_connection())
        self.__factory.add_engine("grc",
                GObject.type_from_name("EngineGRC"))
        if exec_by_ibus:
            self.__bus.request_name("org.freedesktop.IBus.GRC", 0)
        else:
            self.__bus.register_component(self.__component)
            self.__bus.set_global_engine_async(
                    "grc", -1, None, None, None)

    def run(self):
        self.__mainloop.run()

    def __bus_disconnected_cb(self, bus):
        self.__mainloop.quit()


def launch_engine(exec_by_ibus):
    IBus.init()
    IMApp(exec_by_ibus).run()

def print_help(v = 0):
    print("-i, --ibus             executed by IBus.")
    print("-h, --help             show this message.")
    print("-d, --daemonize        daemonize ibus")
    sys.exit(v)

def main():
    try:
        locale.setlocale(locale.LC_ALL, "")
    except:
        pass

    exec_by_ibus = False
    daemonize = False

    shortopt = "ihd"
    longopt = ["ibus", "help", "daemonize"]

    try:
        opts, args = getopt.getopt(sys.argv[1:], shortopt, longopt)
    except getopt.GetoptError as err:
        print_help(1)

    for o, a in opts:
        if o in ("-h", "--help"):
            print_help(sys.stdout)
        elif o in ("-d", "--daemonize"):
            daemonize = True
        elif o in ("-i", "--ibus"):
            exec_by_ibus = True
        else:
            sys.stderr.write("Unknown argument: %s\n" % o)
            print_help(1)

    if daemonize:
        if os.fork():
            sys.exit()

    launch_engine(exec_by_ibus)

if __name__ == "__main__":
    main()