#!/usr/bin/env python
# vim: set fileencoding=utf-8 :

###############################################################################
#                                                                             #
# Copyright (c) 2017 Idiap Research Institute, http://www.idiap.ch/           #
# Contact: beat.support@idiap.ch                                              #
#                                                                             #
# This file is part of the beat.core module of the BEAT platform.             #
#                                                                             #
# Commercial License Usage                                                    #
# Licensees holding valid commercial BEAT licenses may use this file in       #
# accordance with the terms contained in a written agreement between you      #
# and Idiap. For further information contact tto@idiap.ch                     #
#                                                                             #
# Alternatively, this file may be used under the terms of the GNU Affero      #
# Public License version 3 as published by the Free Software and appearing    #
# in the file LICENSE.AGPL included in the packaging of this file.            #
# The BEAT platform 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.                                        #
#                                                                             #
# You should have received a copy of the GNU Affero Public License along      #
# with the BEAT platform. If not, see http://www.gnu.org/licenses/.           #
#                                                                             #
###############################################################################

class Algorithm:

    def process(self, inputs, outputs):
        a = 0
        b = 0
        if inputs.groupOf('a').hasMoreData():
            inputs.groupOf('a').next()
            a = inputs['a'].data.value
            b = inputs['b'].data.value

        outputs['sum'].write({
            'value': a + b + inputs['c'].data.value + inputs['d'].data.value
            })
        return True
