#  Copyright (C) 2012,2013
#      Max Planck Institute for Polymer Research
#  Copyright (C) 2008,2009,2010,2011
#      Max-Planck-Institute for Polymer Research & Fraunhofer SCAI
#  
#  This file is part of ESPResSo++.
#  
#  ESPResSo++ 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.
#  
#  ESPResSo++ 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/>. 


"""
********************************************
**espresso.interaction.PotentialUniqueDist**
********************************************

"""
from espresso import pmi
from espresso import toReal3DFromVector

from _espresso import interaction_PotentialUniqueDist

# Python base class for PotentialUniqueDists
class PotentialUniqueDistLocal(object):
    def computeEnergy(self, *args):
        if not (pmi._PMIComm and pmi._PMIComm.isActive()) or pmi._MPIcomm.rank in pmi._PMIComm.getMPIcpugroup():
            if len(args) == 1:
                arg0 = args[0]
                if isinstance(arg0, float) or isinstance(arg0, int):
                    return self.cxxclass.computeEnergy(self, arg0)
            return self.cxxclass.computeEnergy(self, toReal3DFromVector(*args))

    def computeForce(self, *args):
        if not (pmi._PMIComm and pmi._PMIComm.isActive()) or pmi._MPIcomm.rank in pmi._PMIComm.getMPIcpugroup():
            if len(args) == 1:
                arg0 = args[0]
                if isinstance(arg0, float) or isinstance(arg0, int):
                    newargs = [arg0, 0, 0]
                    return self.cxxclass.computeForce(self, toReal3DFromVector(*newargs))[0]
            return self.cxxclass.computeForce(self, toReal3DFromVector(*args))

    def _setShift(self, shift="auto"):
        if (shift == "auto"):
            if not (pmi._PMIComm and pmi._PMIComm.isActive()) or pmi._MPIcomm.rank in pmi._PMIComm.getMPIcpugroup():
                self.cxxclass.setAutoShift(self)
        else:
            if not (pmi._PMIComm and pmi._PMIComm.isActive()) or pmi._MPIcomm.rank in pmi._PMIComm.getMPIcpugroup():
                self.cxxclass.shift.fset(self, shift)

    def _getShift(self):
        if not (pmi._PMIComm and pmi._PMIComm.isActive()) or pmi._MPIcomm.rank in pmi._PMIComm.getMPIcpugroup():
            return self.cxxclass.shift.fget(self)

    shift = property(_getShift, _setShift)

if pmi.isController:
    class PotentialUniqueDist(object):
        __metaclass__ = pmi.Proxy
        pmiproxydefs = dict(
            localcall = [ 'computeForce', 'computeEnergy' ],
            pmiproperty = ['cutoff', 'shift']
            )
        

        
# class PythonPotentialUniqueDistLocal(PotentialUniqueDist_PythonPotentialUniqueDist):
#     def getCutoffSqr(self):
#         pass

#     def computeForce(self, *args):
#         """Override this method to compute the force for a given distance.
        
#         It should at least be able to handle a Real3D distance input.
#         """
#         pass

#     def computeEnergy(self, *args):
#         """Override this method to compute the energy at a given distance.
        
#         It should at least be able to handle a Real3D distance input.
#         """
#         pass
