#!/usr/bin/env python
# Copyright (C) 2010, Paraguay Educa <tecnologia@paraguayeduca.org>
#
# 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 3 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, see <http://www.gnu.org/licenses/>.
#

import os
import sys
import subprocess
import logging

from sugar import env
#from sugar.datastore import datastore

lease_path = '/security/lease.sig'
backup_identifier = sys.argv[2]
volume_path = sys.argv[1]

if len(sys.argv) != 3:
    print 'Usage: %s <volume_path> <backup_identifier>' % sys.argv[0]
    exit(1)

logging.debug('Backup started')

backup_path = os.path.join(volume_path, 'backup', backup_identifier)

if not os.path.exists(backup_path):
    os.makedirs(backup_path)

# Save activation file
if os.path.isfile(lease_path):
    lease_content =  open(lease_path).read()
    open(os.path.join(volume_path, 'lease.sig'), 'a+').write(lease_content)

#datastore.freeze()
#subprocess.call(['pkill', '-9', '-f', 'python.*datastore-service'])

result = 0
try:
    cmd = ['tar', '-C', env.get_profile_path(), '-czf', \
           os.path.join(backup_path, 'datastore.tar.gz'), 'datastore']

    subprocess.check_call(cmd)

except Exception, e:
    logging.error('Backup failed: %s', str(e))
    result = 1

#datastore.thaw()

logging.debug('Backup finished')
exit(result)