#    Back In Time
#    Copyright (C) 2008-2009 Oprea Dan
#
#    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 Street, Fifth Floor, Boston, MA 02110-1301 USA.


import os
import os.path
import stat
import sys
import gettext

import config
import logger
import snapshots

_=gettext.gettext


def take_snapshot_now_async():
	app = 'backintime'
	if os.path.isfile( './backintime' ):
		app = './backintime'
	cmd = "%s --backup &" % app
	os.system( cmd )


def take_snapshot( cfg, force = True ):
	logger.openlog()
	snapshots.Snapshots( cfg ).take_snapshot( force )
	logger.closelog()


def print_version( cfg, app_name ):
	print 'Back In Time'
	print 'Version: ' + cfg.VERSION
	print ''
	print 'Back In Time comes with ABSOLUTELY NO WARRANTY.'
	print 'This is free software, and you are welcome to redistribute it'
	print "under certain conditions; type `%s --license\' for details." % app_name
	print ''


def print_help( cfg, app_name ):
	print app_name + ' -b|--backup'
	print '\tTake a snapshot'
	print app_name + ' --backup-job'
	print '\tUsed for cron job: take a snapshot'
	print app_name + ' --snapshots-path'
	print '\tShow the path where is saves the snapshots'
	print app_name + ' --snapshots-list'
	print '\tShow the list of snapshots IDs'
	print app_name + ' --snapshots-list-path'
	print '\tShow the paths to snapshots'
	print app_name + ' --last-snapshot'
	print '\tShow the ID of the last snapshot'
	print app_name + ' --last-snapshot-path'
	print '\tShow the path to the last snapshot'
	print app_name + ' -v|--version'
	print '\tShow version'
	print app_name + ' --license'
	print '\tShow license'
	print app_name + ' -h|--help'
	print '\tShow this help'
	print ''


def start_app( app_name = 'backintime', extra_args = [] ):
	cfg = config.Config()
	print_version( cfg, app_name )

	for arg in sys.argv[ 1 : ]:
		if arg == '--backup' or arg == '-b':
			take_snapshot( cfg, True )
			sys.exit(0)

		if arg == '--backup-job':
			take_snapshot( cfg, False )
			sys.exit(0)

		if arg == '--version' or arg == '-v':
			sys.exit(0)

		if arg == '--license':
			print cfg.get_license()
			sys.exit(0)

		if arg == '--help' or arg == '-h':
			print_help( cfg, app_name )
			sys.exit(0)

		if arg == '--snapshots-path':
			if not cfg.is_configured():
				print "The application is not configured !"
			else:
				print "SnapshotsPath: %s" % cfg.get_snapshots_full_path()
			sys.exit(0)

		if arg == '--snapshots-list':
			if not cfg.is_configured():
				print "The application is not configured !"
			else:
				list = snapshots.Snapshots( cfg ).get_snapshots_list()
				if len( list ) <= 0:
					print "There are no snapshots"
				else:
					for snapshot_id in list:
						print "SnapshotID: %s" % snapshot_id
			sys.exit(0)

		if arg == '--snapshots-list-path':
			if not cfg.is_configured():
				print "The application is not configured !"
			else:
				s = snapshots.Snapshots( cfg )
				list = s.get_snapshots_list()
				if len( list ) <= 0:
					print "There are no snapshots"
				else:
					for snapshot_id in list:
						print "SnapshotPath: %s" % s.get_snapshot_path( snapshot_id )
			sys.exit(0)

		if arg == '--last-snapshot':
			if not cfg.is_configured():
				print "The application is not configured !"
			else:
				list = snapshots.Snapshots( cfg ).get_snapshots_list()
				if len( list ) <= 0:
					print "There are no snapshots"
				else:
					print "SnapshotID: %s" % list[0]
			sys.exit(0)

		if arg == '--last-snapshot-path':
			if not cfg.is_configured():
				print "The application is not configured !"
			else:
				s = snapshots.Snapshots( cfg )
				list = s.get_snapshots_list()
				if len( list ) <= 0:
					print "There are no snapshots"
				else:
					print "SnapshotPath: %s" % s.get_snapshot_path( list[0] )
			sys.exit(0)

		if arg == '--snapshots' or arg == '-s':
			continue

		if arg == '--gnome' or arg == '--kde4' or arg == '--kde3':
			continue

		if arg[0] == '-':
			if not arg[0] in extra_args:
				print "Ignore option: %s" % arg
			continue

	return cfg


if __name__ == '__main__':
	start_app()