// graph-tool -- a general graph modification and manipulation thingy
//
// Copyright (C) 2006-2021 Tiago de Paula Peixoto <tiago@skewed.de>
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser 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 Lesser General Public License for more
// details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.

#include "graph_tool.hh"
#include "random.hh"

#include <boost/python.hpp>

#include "../blockmodel/graph_blockmodel.hh"
#define BASE_STATE_params BLOCK_STATE_params
#include "graph_blockmodel_dynamics.hh"
#include "graph_blockmodel_dynamics_discrete.hh"
#include "graph_blockmodel_dynamics_pseudo_ising_mcmc_h.hh"
#include "../support/graph_state.hh"
#include "../loops/mcmc_loop.hh"

using namespace boost;
using namespace graph_tool;

GEN_DISPATCH(block_state, BlockState, BLOCK_STATE_params)

template <class BaseState>
struct Dyn : Dynamics<BaseState, PseudoIsingState> {};

template <class BaseState>
GEN_DISPATCH(dynamics_state, Dyn<BaseState>::template DynamicsState,
             DYNAMICS_STATE_params)

template <class State>
GEN_DISPATCH(mcmc_pseudo_ising_state, MCMC<State>::template MCMCPseudoIsingState,
             MCMC_PSEUDO_ISING_STATE_params(State))

python::object mcmc_pseudo_ising_sweep_h(python::object omcmc_state,
                                         python::object odynamics_state,
                                         rng_t& rng)
{
    python::object ret;
    auto dispatch = [&](auto* block_state)
    {
        typedef typename std::remove_pointer<decltype(block_state)>::type
            state_t;

        dynamics_state<state_t>::dispatch
            (odynamics_state,
             [&](auto& ls)
             {
                 typedef typename std::remove_reference<decltype(ls)>::type
                     dynamics_state_t;

                 mcmc_pseudo_ising_state<dynamics_state_t>::make_dispatch
                     (omcmc_state,
                      [&](auto& s)
                      {
                          auto ret_ = mcmc_sweep(s, rng);
                          ret = tuple_apply([&](auto&... args){ return python::make_tuple(args...); }, ret_);
                      });
             },
             false);
    };
    block_state::dispatch(dispatch);
    return ret;
}

void export_pseudo_ising_mcmc_h()
{
    using namespace boost::python;
    def("mcmc_pseudo_ising_sweep_h", &mcmc_pseudo_ising_sweep_h);
}
