#!/usr/bin/python2.6
# -*- coding: utf-8 -*-
#
# Univention Common Python Library
#
# Copyright 2010-2011 Univention GmbH
#
# http://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
#
# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <http://www.gnu.org/licenses/>.

ALL = ['getLogrotateConfig']

def _getBoolDefault(varGlobal, varLocal, settings, configRegistry):
	"""
	Update dictionary 'settings'.

	'varGlobal' and 'varLocal' name two boolean config-registry-entries from 'configRegistry'.
	'varGlobal' is used unless 'varLocal' overwrites the setting.
	"""
	configName = varGlobal.split("/")[-1]
	if configRegistry.is_true(varGlobal, True):
		settings[configName] = configName
	if configRegistry.is_false(varLocal):
		if settings.get(configName): del settings[configName]
	if configRegistry.is_true(varLocal, False):
		settings[configName] = configName

def getLogrotateConfig(name, configRegistry):
	"""
	Return dictionary with logrotate settings.

	>>> from univention.config_registry import ConfigRegistry
	>>> ucr = ConfigRegistry()
	>>> ucr['logrotate/rotate'] = 'weekly'
	>>> ucr['logrotate/rotate/count'] = '42'
	>>> ucr['logrotate/size'] = '100k'
	>>> ucr['logrotate/foo/size'] = '200k'
	>>> ucr['logrotate/create'] = '0600 root root'
	>>> ucr['logrotate/missingok'] = 'yes'
	>>> ucr['logrotate/compress'] = 'yes'
	>>> ucr['logrotate/notifempty'] = 'yes'
	>>> ucr['logrotate/foo/notifempty'] = 'no'
	>>> for l in sorted(getLogrotateConfig('foo', ucr).values()): print l
	compress
	create 0600 root root
	missingok
	rotate 42
	size 200k
	weekly
	"""
	settings = {}

	for var in ["logrotate/", "logrotate/" + name + "/"]:
		if configRegistry.get(var + "rotate"):
			settings["rotate"] = configRegistry[var + "rotate"]
		if configRegistry.get(var + "rotate/count"):
			settings["rotate/count"] = "rotate " + configRegistry[var + "rotate/count"]
		if configRegistry.get(var + "size"):
			settings["size"] = "size " + configRegistry[var + "size"]
		if configRegistry.get(var + "create"):
			settings["create"] = "create " + configRegistry[var + "create"]

	_getBoolDefault("logrotate/missingok", "logrotate/" + name + "/missingok", settings, configRegistry)
	_getBoolDefault("logrotate/compress", "logrotate/" + name + "/compress", settings, configRegistry)
	_getBoolDefault("logrotate/notifempty", "logrotate/" + name + "/notifempty", settings, configRegistry)

	return settings

def __test(s, varGlobal, varLocal):
	"""
	>>> __test({},         None, None)
	{'a': 'a'}
	>>> #__test({'a': 'x'}, None, None) # {'a': 'x'}
	>>> __test({},         0,    None)
	{}
	>>> __test({},         1,    None)
	{'a': 'a'}
	>>> #__test({'a': 'x'}, 0,    None) # {}
	>>> __test({'a': 'x'}, 1,    None)
	{'a': 'a'}
	>>> __test({},         None, 0,  )
	{}
	>>> __test({},         None, 1,  )
	{'a': 'a'}
	>>> __test({'a': 'x'}, None, 0,  )
	{}
	>>> __test({'a': 'x'}, None, 1,  )
	{'a': 'a'}
	>>> __test({},         0,    0,  )
	{}
	>>> __test({},         0,    1,  )
	{'a': 'a'}
	>>> __test({'a': 'x'}, 0,    0,  )
	{}
	>>> __test({'a': 'x'}, 0,    1,  )
	{'a': 'a'}
	>>> __test({},         1,    0,  )
	{}
	>>> __test({},         1,    1,  )
	{'a': 'a'}
	>>> __test({'a': 'x'}, 1,    0,  )
	{}
	>>> __test({'a': 'x'}, 1,    1,  )
	{'a': 'a'}
	"""
	from univention.config_registry import ConfigRegistry
	ucr = ConfigRegistry()
	if varGlobal is not None: ucr['a'] = str(varGlobal)
	if varLocal is not None: ucr['la'] = str(varLocal)
	_getBoolDefault('a', 'la', s, ucr)
	print s

if __name__ == '__main__':
	import doctest
	doctest.testmod()