#!/usr/bin/env python
# Copyright (C) 2006, Red Hat, Inc.
#
# 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 of the License, 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

import sys
import os
from ConfigParser import ConfigParser
import gettext

import pygtk
pygtk.require('2.0')
import gtk
import gobject
import gst

from sugar import logger
from sugar import env
from sugar.profile import get_profile

logger.cleanup()
logger.start('shell')

sys.path.insert(0, env.get_shell_path())

from view.Shell import Shell
from model.shellmodel import ShellModel
from shellservice import ShellService
from hardware import hardwaremanager
from intro import intro

def _start_matchbox():
    cmd = ['matchbox-window-manager']

    cmd.extend(['-use_titlebar', 'no'])
    cmd.extend(['-theme', 'sugar'])
    cmd.extend(['-kbdconfig', env.get_shell_path('kbdconfig')])

    gobject.spawn_async(cmd, flags=gobject.SPAWN_SEARCH_PATH)

def _save_session_info():
    # Save our DBus Session Bus address somewhere it can be found
    #
    # WARNING!!! this is going away at some near future point, do not rely on it
    #
    session_info_file = os.path.join(env.get_profile_path(), "session.info")
    f = open(session_info_file, "w")

    cp = ConfigParser()
    cp.add_section('Session')
    cp.set('Session', 'dbus_address', os.environ['DBUS_SESSION_BUS_ADDRESS'])
    cp.set('Session', 'display', gtk.gdk.display_get_default().get_name())
    cp.write(f)

    f.close()

def _setup_translations():
    domain = 'sugar'
    gettext.bindtextdomain(domain, env.get_locale_path())
    gettext.textdomain(domain)

def check_cm(bus_name):
    try:
        import dbus
        bus = dbus.SessionBus()
        bus_object = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus')
        name = bus_object.GetNameOwner(bus_name, dbus_interface='org.freedesktop.DBus')
        if name:
            return True
    except dbus.DBusException:
        pass
    return False

def _shell_started_cb():
    # Unfreeze the display
    hw_manager = hardwaremanager.get_manager()
    hw_manager.set_dcon_freeze(0)

    startup_sound = os.path.join(env.get_data_path('startup.flac'))
    if os.path.exists(startup_sound):
        player = gst.element_factory_make("playbin", "player")
        player.set_property("uri", "file://" + startup_sound)
        player.set_state(gst.STATE_PLAYING)

def main():
    gobject.idle_add(_shell_started_cb)

    _save_session_info()
    _start_matchbox()
    _setup_translations()

    # Do initial setup if needed
    if not get_profile().is_valid():
        win = intro.IntroWindow()
        win.show_all()
        gtk.main()

    if os.environ.has_key("SUGAR_TP_DEBUG"):
        # Allow the user time to start up telepathy connection managers
        # using the Sugar DBus bus address
        import time
        from telepathy.client import ManagerRegistry

        registry = ManagerRegistry()
        registry.LoadManagers()

        debug_flags = os.environ["SUGAR_TP_DEBUG"].split(',')
        for cm_name in debug_flags:
            if cm_name not in ["gabble", "salut"]:
                continue

            try:
                cm = registry.services[cm_name]
            except KeyError:
               print RuntimeError("%s connection manager not found!" % cm_name)

            while not check_cm(cm['busname']):
                print "Waiting for %s on: DBUS_SESSION_BUS_ADDRESS=%s" %(cm_name, os.environ["DBUS_SESSION_BUS_ADDRESS"])
                try:
                    time.sleep(5)
                except KeyboardInterrupt:
                    print "Got Ctrl+C, continuing..."
                    break

    model = ShellModel()
    shell = Shell(model)
    service = ShellService(shell)

if __name__ == '__main__':
    # running the gtk.main outside of the main() function allows us to 
    # profile startup times.  To profile startup times replace the following
    # call to main with:
    # import cProfile
    # cProfile.run('main()', '/home/olpc/sugar-startup.stats')

    main()

    hw_manager = hardwaremanager.get_manager()
    hw_manager.startup()

    try:
        gtk.main()
    except KeyboardInterrupt:
        print 'Ctrl+C pressed, exiting...'

    session_info_file = os.path.join(env.get_profile_path(), "session.info")
    os.remove(session_info_file)