#!/usr/bin/python

import sys
import os
import pwd
import random

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

# FIXME How to pick a good display number
XEPHYR_DISPLAY = 100

def add_to_python_path(path):
	sys.path.insert(0, path)
	if os.environ.has_key('PYTHONPATH'):
		os.environ['PYTHONPATH'] += ':' + path
	else:
		os.environ['PYTHONPATH'] = path

def start_dbus():
	curdir = os.path.dirname(__file__)
	args = "/bin/dbus-daemon --session --print-address".split()
	(dbus_pid, ign1, dbus_stdout, ign3) = gobject.spawn_async(args, flags=gobject.SPAWN_STDERR_TO_DEV_NULL, standard_output=True)
	dbus_file = os.fdopen(dbus_stdout)
	addr = dbus_file.readline()
	addr = addr.strip()
	dbus_file.close()

	os.environ["DBUS_SESSION_BUS_ADDRESS"] = addr

	return dbus_pid

def stop_dbus(dbus_pid):
	try:
		print 'Closing dbus-daemon, pid %d' % (dbus_pid)
		os.kill(dbus_pid, 9)
	except OSError:
		pass

def start_xephyr():
	command = 'Xephyr :%d -ac -screen 640x480' % (XEPHYR_DISPLAY)
	xephyr_pid = os.spawnvp(os.P_NOWAIT, 'Xephyr', command.split())

def stop_xephyr():
	os.kill(xephyr_pid)

def start_matchbox():
	command = 'matchbox-window-manager -use_titlebar no'
	xephyr_pid = os.spawnvp(os.P_NOWAIT, 'matchbox-window-manager', command.split())

def stop_matchbox():
	os.kill(xephyr_pid)
	
i = 0
dbus_daemon_pid = None
for arg in sys.argv:
	if arg == '--test-user':
		user = sys.argv[i + 1]
		user_dir = os.path.expanduser('~/.sugar-' + user)
		os.environ['SUGAR_NICK_NAME'] = user
		os.environ['SUGAR_USER_DIR'] = user_dir
		dbus_daemon_pid = start_dbus()
		started_dbus = True
	i += 1

if not os.environ.has_key("SUGAR_NICK_NAME"):
	nick = pwd.getpwuid(os.getuid())[0]
	if not nick or not len(nick):
		nick = "Guest %d" % random.randint(1, 10000)
	os.environ['SUGAR_NICK_NAME'] = nick
	os.environ['SUGAR_USER_DIR'] = os.path.expanduser('~/.sugar')

curdir = os.path.abspath(os.path.dirname(__file__))
basedir = os.path.dirname(curdir)

if os.path.isfile(os.path.join(basedir, 'sugar/__uninstalled__.py')):
	print 'Running sugar from ' + basedir + ' ...'
	add_to_python_path(basedir)
	add_to_python_path(os.path.join(basedir, 'shell'))
else:
	import sugar.env
	add_to_python_path(os.path.join(sugar.env.get_data_dir(), 'shell'))
	print 'Running the installed sugar...'

start_xephyr()
os.environ['DISPLAY'] = ":%d" % (XEPHYR_DISPLAY)
start_matchbox()
	
print 'Redirecting output to the console, press Ctrl+Down to open it.'
	
from session.session import Session

session = Session()
session.start()

if dbus_daemon_pid:
	stop_dbus(dbus_daemon_pid)

stop_matchbox()
stop_xephyr()