#!/usr/bin/env python
#===========================================================
# gnumed.py - launcher for the main GNUmed GUI client module
#===========================================================

__doc__ = """GNUmed client launcher.

This is the launcher for the GNUmed GUI client. It takes
care of all the pre- and post-GUI runtime environment setup.

--quiet
 Be extra quiet and show only _real_ errors in the log.
--debug
 Pre-set the [debug mode] checkbox in the login dialog to
 increase verbosity in the log file. Useful for, well, debugging :-)
--slave
 Pre-set the [enable remote control] checkbox in the login
 dialog to enable the XML-RPC remote control feature.
--profile=<file>
 Activate profiling and write profile data to <file>.
--text-domain=<text domain>
 Set this to change the name of the language file to be loaded.
 Note, this does not change the directory the file is searched in,
 only the name of the file where messages are loaded from. The
 standard textdomain is, of course, "gnumed.mo".
--log-file=<file>
 Use this to change the name of the log file.
 See gmLog.py to find out where the standard log file would
 end up.
--conf-file=<file>
 Use configuration file <file> instead of searching for it in
 standard locations.
--lang-gettext=<language>
 Explicitely set the language to use in gettext translation. The very
 same effect can be achieved by setting the environment variable $LANG
 from a launcher script.
--override-schema-check
 Continue loading the client even if the database schema version
 and the client software version cannot be verified to be compatible.
--help, -h, or -?
 Show this help.
"""
#==========================================================
# $Source: /sources/gnumed/gnumed/gnumed/client/wxpython/gnumed.py,v $
# $Id: gnumed.py,v 1.123.2.1 2008/02/21 17:18:45 ncq Exp $
__version__ = "$Revision: 1.123.2.1 $"
__author__  = "H. Herb <hherb@gnumed.net>, K. Hilbert <Karsten.Hilbert@gmx.net>, I. Haywood <i.haywood@ugrad.unimelb.edu.au>"
__license__ = "GPL (details at http://www.gnu.org)"


# standard library
import sys, os, os.path, signal, warnings


# 1) don't run as module
if __name__ != "__main__":
	print "GNUmed startup: This should not be imported as a module !"
	print "---------------------------------------------------------"
	print __doc__
	sys.exit(0)


# 2) advise not to run as root
if os.name in ['posix'] and os.geteuid() == 0:
	print """
GNUmed startup: GNUmed should not be run as root.
-------------------------------------------------

Running GNUmed as <root> can potentially put all
your medical data at risk. It is strongly advised
against. Please run GNUmed as a non-root user.
"""
	sys.exit(1)


# Python 2.3 on Mandrake turns True/False deprecation warnings
# into exceptions, so revert them to warnings again
warnings.filterwarnings("default", "Use\sPython.s\sFalse\sinstead", DeprecationWarning)
warnings.filterwarnings("default", "Use\sPython.s\sTrue\sinstead", DeprecationWarning)


_log = None
#_cfg = None
_email_logger = None
gmLog = None
_old_sig_hup = None
_old_sig_term = None

#==========================================================
# convenience functions
#==========================================================
def setup_console_exption_handler():
	import_error_sermon = """
CRITICAL ERROR: Cannot load GNUmed Python modules ! - Program halted.

Please make sure you have:

 1) the required third-party Python modules installed
 2) the GNUmed Python modules linked or installed into site-packages/
    (if you do not run from a CVS tree the installer should have taken care of that)
 3) your PYTHONPATH environment variable set up correctly

sys.path is currently set to:

 %s

If you are running from a copy of the CVS tree make sure you
did run gnumed/check-prerequisites.sh with good results.

If you still encounter errors after checking the above
requirements please ask on the mailing list.
""" % '\n '.join(sys.path)

	try:
		from Gnumed.pycommon import gmTools
	except ImportError:
		sys.exit(import_error_sermon)

	sys.excepthook = gmTools.handle_uncaught_exception
#==========================================================
def setup_logging():
	from Gnumed.pycommon import gmLog as _gmLog

	global gmLog
	gmLog = _gmLog
	global _log
	_log = gmLog.gmDefLog

	# always start with debugging enabled
	_log.SetAllLogLevels(gmLog.lData)

	return True
#==========================================================
def setup_locale():
	gmI18N.activate_locale()

	td = None
	if gmCLI.has_arg('--text-domain'):
		td = gmCLI.arg['--text-domain']

	l = None
	if gmCLI.has_arg('--lang-gettext'):
		l = gmCLI.arg['--lang-gettext']

	gmI18N.install_domain(domain = td, language = l)

	return True
#==========================================================
def setup_paths():
	"""Create needed paths in user home directory."""

	from Gnumed.pycommon import gmTools

	gmTools.mkdir(os.path.expanduser(os.path.join('~', '.gnumed', 'scripts')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', '.gnumed', 'spellcheck')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', '.gnumed', 'tmp', 'docs')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', 'gnumed', 'export', 'docs')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', 'gnumed', 'export', 'xDT')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', 'gnumed', 'export', 'EMR')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', 'gnumed', 'xDT')))
	gmTools.mkdir(os.path.expanduser(os.path.join('~', 'gnumed', 'logs')))

	paths = gmTools.gmPaths()
#==========================================================
def setup_date_time():
	from Gnumed.pycommon import gmDateTime

	gmDateTime.init()
#==========================================================
def setup_cfg_files():
	from Gnumed.pycommon import gmCfg, gmNull

	if isinstance(gmCfg.gmDefCfgFile, gmNull.cNull):
		if gmCfg.create_default_cfg_file():
			# now that we got the file we can reopen it as a config file :-)
			try:
				f = gmCfg.cCfgFile()
			except:
				print "GNUmed startup: Cannot open or create config file by any means."
				print "GNUmed startup: Please see the log for details."
				_log.LogException('unhandled exception', sys.exc_info(), verbose=0)
				sys.exit(0)
			gmCfg.gmDefCfgFile = f
		else:
			print "GNUmed startup: Cannot open or create config file by any means.\nPlease see the log for details."
			sys.exit(0)

	global _cfg
	_cfg = gmCfg.gmDefCfgFile
#==========================================================
def handle_sig_hup(signum, frame):
	print "SIGHUP caught"
	print signum
	print frame
	if _old_sig_hup in [None, signal.SIG_IGN]:
		sys.exit(signal.SIGHUP)
	else:
		_old_sig_hup(signum, frame)
#----------------------------------------------------------
def handle_sig_term(signum, frame):
	print 'GNUmed: SIGTERM (SIG%s) caught, shutting down ...' % signum
	if frame is not None:
		print '%s::%s@%s' % (frame.f_code.co_filename, frame.f_code.co_name, frame.f_lineno)

	# FIXME: need to do something useful here

	if _old_sig_term in [None, signal.SIG_IGN]:
		sys.exit(signal.SIGTERM)
	else:
		_old_sig_term(signum, frame)
#----------------------------------------------------------
def setup_signal_handlers():
#	global _old_sig_hup
#	old_sig_hup = signal.signal(signal.SIGHUP, handle_sig_hup)
	global _old_sig_term
	old_sig_term = signal.signal(signal.SIGTERM, handle_sig_term)
#==========================================================
def log_object_refcounts():
	if not gmCLI.has_arg('--debug'):
		return

	import types

	def get_refcounts():
		refcount = {}
		# collect all classes
		for module in sys.modules.values():
			for sym in dir(module):
				obj = getattr(module, sym)
				if type(obj) is types.ClassType:
					refcount[obj] = sys.getrefcount(obj)
		# sort by refcount
		pairs = map(lambda x: (x[1],x[0]), refcount.items())
		pairs.sort()
		pairs.reverse()
		return pairs

	rcfile = open('./gm-refcount.lst', 'wb')
#	for refcount, class_ in get_refcounts():
#		if not class_.__name__.startswith('wx'):
#			rcfile.write('%10d %s\n' % (refcount, class_.__name__))
	rcfile.close()

#==========================================================
def check_help_request():
	if gmCLI.has_arg("--help") or gmCLI.has_arg("-h") or gmCLI.has_arg("-?"):
		print _(
			'Help requested\n'
			'--------------'
		)
		print __doc__
		sys.exit(0)

#==========================================================
# main - launch the GNUmed wxPython GUI client
#----------------------------------------------------------
import logging
logging.raiseExceptions = False

setup_console_exption_handler()
setup_signal_handlers()
setup_logging()

from Gnumed.pycommon import gmCLI, gmI18N

setup_locale()
check_help_request()

_log.Log(gmLog.lInfo, 'Starting up as main module (%s).' % __version__)
_log.Log(gmLog.lInfo, 'command line is: %s' % str(gmCLI.arg))
_log.Log(gmLog.lInfo, 'Python %s on %s (%s)' % (sys.version, sys.platform, os.name))

setup_paths()
setup_date_time()
#setup_cfg_files()

# import more of our stuff
from Gnumed.pycommon import gmGuiBroker, gmHooks

gmHooks.run_hook_script(hook = u'startup-before-GUI')

# now actually run GNUmed
from Gnumed.wxpython import gmGuiMain
# do we do profiling ?
if gmCLI.has_arg('--profile'):
	profile_file = gmCLI.arg['--profile']
	_log.Log(gmLog.lInfo, 'writing profiling data into %s' % profile_file)
	import profile
	profile.run('gmGuiMain.main()', profile_file)
else:
	gmGuiMain.main()

gmHooks.run_hook_script(hook = u'shutdown-post-GUI')

log_object_refcounts()

_log.Log(gmLog.lInfo, 'Normally shutting down as main module.')

#==========================================================
# $Log: gnumed.py,v $
# Revision 1.123.2.1  2008/02/21 17:18:45  ncq
# - silence exception generated by logging bug on windows
#
# Revision 1.123  2007/10/21 20:21:17  ncq
# - no more mandatory global config file
#
# Revision 1.122  2007/09/04 23:30:42  ncq
# - explain --slave
#
# Revision 1.121  2007/08/07 21:42:40  ncq
# - cPaths -> gmPaths
#
# Revision 1.120  2007/07/22 09:28:13  ncq
# - tmp/ now in .gnumed/
#
# Revision 1.119  2007/07/13 09:12:35  ncq
# - setup signal handler
#
# Revision 1.118  2007/05/21 14:49:42  ncq
# - create gnumed/export/EMR/
#
# Revision 1.117  2007/05/08 16:07:00  ncq
# - console exception display handler factored out
# - cleanup
#
# Revision 1.116  2007/05/08 11:16:51  ncq
# - cleanup
#
# Revision 1.115  2007/05/07 12:34:41  ncq
# - better --debug docs
# - cleanup
# - always startup with --debug enabled
#
# Revision 1.114  2007/04/19 13:14:50  ncq
# - init paths
#
# Revision 1.113  2007/04/11 20:47:13  ncq
# - no more 'resource dir' and 'gnumed_dir'
#
# Revision 1.112  2007/03/27 10:29:49  ncq
# - better placement for default word list
#
# Revision 1.111  2007/03/26 14:45:36  ncq
# - cleanup
# - remove --talkback handling (it will be better supported next version)
# - create path gnumed/logs/ at startup
#
# Revision 1.110  2007/03/18 14:11:34  ncq
# - a bit of clenaup/refactoring
# - add hooks before/after GUI
#
# Revision 1.109  2007/03/08 11:54:18  ncq
# - no more ~/.gnumed/user-preferences.conf
#
# Revision 1.108  2007/02/22 17:38:09  ncq
# - add gnumed/export/xDT/
#
# Revision 1.107  2007/01/30 17:50:14  ncq
# - improved doc string
#
# Revision 1.106  2007/01/30 17:41:03  ncq
# - setup needed pathes in home dir of user at startup
#
# Revision 1.105  2006/12/21 17:54:43  ncq
# - init date/time handling early on
#
# Revision 1.104  2006/11/15 00:40:35  ncq
# - if we encounter and unhandled exception we can just as well be verbose
#
# Revision 1.103  2006/09/01 14:47:22  ncq
# - no more --unicode-gettext handling
#
# Revision 1.102  2006/08/08 10:28:30  ncq
# - show sys.path when failing to import GNUmed modules
#
# Revision 1.101  2006/08/08 10:13:01  ncq
# - fix typo
#
# Revision 1.100  2006/08/01 18:49:06  ncq
# - improve wording on failure to load our own modules
#
# Revision 1.99  2006/07/24 19:28:01  ncq
# - fixed variable verwechsling
#
# Revision 1.98  2006/07/01 13:15:04  ncq
# - cleanup
#
# Revision 1.97  2006/07/01 11:33:52  ncq
# - --text-domain/--lang-gettext/--unicode-gettext CLI options
#   must now be provided by gmI18N *importers*
#
# Revision 1.96  2006/06/26 21:38:09  ncq
# - cleanup
#
# Revision 1.95  2006/06/15 21:34:46  ncq
# - log unhandled exceptions, too
#
# Revision 1.94  2006/06/13 20:36:57  ncq
# - use gmI18N only, don't mess with locale ourselves
#
# Revision 1.93  2006/06/06 20:56:24  ncq
# - cleanup
#
# Revision 1.92  2006/05/24 09:56:02  ncq
# - cleanup
# - hook sys.excepthook
#
# Revision 1.91  2005/12/27 19:02:41  ncq
# - document --overide-schema-check
#
# Revision 1.90  2005/12/23 15:43:23  ncq
# - refuse to be run as root
# - exit with status 0 if imported as module
#
# Revision 1.89  2005/12/11 13:31:44  ncq
# - deal with people setting their locale to something they don't have installed
#
# Revision 1.88  2005/10/30 15:53:13  ncq
# - try to be more careful and more precise when setting up the locale
#
# Revision 1.87  2005/09/28 21:27:30  ncq
# - a lot of wx2.6-ification
#
# Revision 1.86  2005/09/28 15:57:48  ncq
# - a whole bunch of wx.Foo -> wx.Foo
#
# Revision 1.85  2005/08/18 18:57:58  ncq
# - document --lang-gettext
#
# Revision 1.84  2005/07/24 11:36:44  ncq
# - cleanup
#
# Revision 1.83  2005/07/23 14:41:13  shilbert
# - locale setup failed on MS Windows
#
# Revision 1.82  2005/07/17 17:22:04  ncq
# - handle path expansion/normalization more carefully to
#   hopefully cope with MS Windows shortcomings
# - be slightly more informative on startup re paths
#
# Revision 1.81  2005/07/16 18:36:35  ncq
# - more careful error catching around locale access
#
# Revision 1.80  2005/07/04 11:27:57  ncq
# - GnuMed -> GNUmed
#
# Revision 1.79  2005/06/29 15:11:05  ncq
# - make startup messages a bit more consistent
#
# Revision 1.78  2005/06/23 15:00:53  ncq
# - log default string encoding
#
# Revision 1.77  2005/04/26 20:02:48  ncq
# - cleanup
#
# Revision 1.76  2005/04/25 17:32:58  ncq
# - entirely comment out setup_locale
#
# Revision 1.75  2005/04/24 14:06:38  ncq
# - commented out a few locale queries that seemed to crash Richard's system ...
#
# Revision 1.74  2005/04/11 18:02:34  ncq
# - initial code to handle signals
#
# Revision 1.73  2005/03/30 22:10:39  ncq
# - even more better logging ...
#
# Revision 1.72  2005/03/29 07:32:36  ncq
# - add --unicode-gettext
# - add setup_locale()
#
# Revision 1.71  2005/02/03 20:35:41  ncq
# - slightly silence the console
#
# Revision 1.70  2005/02/01 10:16:07  ihaywood
# refactoring of gmDemographicRecord and follow-on changes as discussed.
#
# gmTopPanel moves to gmHorstSpace
# gmRichardSpace added -- example code at present, haven't even run it myself
# (waiting on some icon .pngs from Richard)
#
# Revision 1.69  2004/09/13 09:31:10  ncq
# - --slave and --port now in config file, remove help
#
# Revision 1.68  2004/09/10 10:40:48  ncq
# - add --conf-file option to --help output
#
# Revision 1.67  2004/08/16 11:59:10  ncq
# - fix existence check for config file (eg. test for Null instance, not None)
#
# Revision 1.66  2004/07/17 11:36:35  ncq
# - comment out refcounting even on normal --debug runs
#
# Revision 1.65  2004/06/26 23:10:18  ncq
# - add object refcounting when --debug
#
# Revision 1.64  2004/06/25 12:31:36  ncq
# - add profiling support via --profile=<file>
#
# Revision 1.63  2004/06/25 08:04:07  ncq
# - missing ) found by epydoc
#
# Revision 1.62  2004/06/23 21:07:26  ncq
# - log Python version, platform type, os name at startup
#
# Revision 1.61  2004/05/11 08:10:27  ncq
# - try: except: the warnings.filterwarnings code as some Pythons don't seem to have it
#
# Revision 1.60  2004/03/25 11:02:37  ncq
# - cleanup
#
# Revision 1.59  2004/03/04 19:45:51  ncq
# - add get_resource_path()
# - reorder main() flow
# - switch to from Gnumed.* import *
#
# Revision 1.58  2004/02/25 09:46:22  ncq
# - import from pycommon now, not python-common
#
# Revision 1.57  2004/02/05 23:52:37  ncq
# - --slave/--port docstring
#
# Revision 1.56  2003/11/17 10:56:39  sjtan
#
# synced and commiting.
#
# Revision 1.1  2003/10/23 06:02:40  sjtan
#
# manual edit areas modelled after r.terry's specs.
#
# Revision 1.55  2003/06/19 15:29:20  ncq
# - spelling, cleanup
#
# Revision 1.54  2003/06/01 12:28:23  ncq
# - fatal now "verbose" in LogException, use it
#
# Revision 1.53  2003/06/01 01:47:33  sjtan
#
# starting allergy connections.
#
# Revision 1.52  2003/04/02 13:31:57  ncq
# - turn Mandrake Python 2.3 True/False DeprecationWarning exceptions back into simple Warnings
#
# Revision 1.51  2003/03/30 00:24:00  ncq
# - typos
# - (hopefully) less confusing printk()s at startup
#
# Revision 1.50  2003/02/08 00:37:49  ncq
# - cleanup, one more module dir
#
# Revision 1.49  2003/02/07 21:06:02  sjtan
#
# refactored edit_area_gen_handler to handler_generator and handler_gen_editarea. New handler for gmSelectPerson
#
# Revision 1.48  2003/02/03 14:29:08  ncq
# - finally fixed that annoying Pseudo error exception.SystemExit on login dialog cancellation
#
# Revision 1.47  2003/01/20 08:25:15  ncq
# - better error messages
#
# Revision 1.46  2003/01/19 13:16:46  ncq
# - better instructions on failing starts
#
# Revision 1.45  2003/01/14 19:36:39  ncq
# - better logging of fatal exceptions
#
# Revision 1.44  2002/11/06 11:52:43  ncq
# - correct misleading printk()s
#
# Revision 1.43  2002/11/04 15:38:59  ncq
# - use helper in gmCfg for config file creation
#
# Revision 1.42  2002/11/03 14:10:15  ncq
# - autocreate empty config file on failing to find one
# - might fail on Windows - untested so far
#
# Revision 1.41  2002/11/03 13:22:20  ncq
# - phase 1: raise log level of console logger to lPanic only
# - gives a lot less confusing output
#
# Revision 1.40  2002/09/08 23:31:09  ncq
# - really fail on failing to load a module
#
# @change log:
#	01.03.2002 hherb first draft, untested