# Copyright (C) 2014 Johnny Vestergaard <jkv@unixcluster.dk>
#
# 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 time
import calendar


class Uptime(object):
    def __init__(self, started=-1):
        if started >= 0:
            initial = started
        else:
            initial = calendar.timegm(time.gmtime())
        self.started = calendar.timegm(time.gmtime(initial))

    def get_value(self):
        return calendar.timegm(time.gmtime()) - self.started
