// graph-tool -- a general graph modification and manipulation thingy
//
// Copyright (C) 2006-2022 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 "../overlap/graph_blockmodel_overlap_util.hh"
#include "../overlap/graph_blockmodel_overlap.hh"
#define BASE_STATE_params OVERLAP_BLOCK_STATE_params ((eweight,,,0))
#include "graph_blockmodel_layers.hh"
#include "../blockmodel/graph_blockmodel_multiflip_mcmc.hh"
#include "../blockmodel/graph_blockmodel_multicanonical.hh"
#include "../loops/mcmc_loop.hh"

using namespace boost;
using namespace graph_tool;

GEN_DISPATCH(overlap_block_state, OverlapBlockState, OVERLAP_BLOCK_STATE_params)

template <class BaseState>
GEN_DISPATCH(layered_block_state, Layers<BaseState>::template LayeredBlockState,
             LAYERED_BLOCK_STATE_params)

template <class State>
GEN_DISPATCH(mcmc_block_state, MCMC<State>::template MCMCBlockState,
             MCMC_BLOCK_STATE_params(State))

template <class State>
GEN_DISPATCH(multicanonical_block_state,
             Multicanonical<State>::template MulticanonicalBlockState,
             MULTICANONICAL_BLOCK_STATE_params(State))

python::object
multicanonical_layered_overlap_multiflip_sweep(python::object omulticanonical_state,
                                               python::object olayered_state,
                                               rng_t& rng)
{
#ifdef GRAPH_BLOCKMODEL_LAYERS_ENABLE
    python::object ret;
    auto dispatch = [&](auto* block_state)
    {
        typedef typename std::remove_pointer<decltype(block_state)>::type
            state_t;

        layered_block_state<state_t>::dispatch
            (olayered_state,
             [&](auto& ls)
             {
                 typedef typename std::remove_reference<decltype(ls)>::type
                     layered_state_t;

                 mcmc_block_state<layered_state_t>::make_dispatch
                     (omulticanonical_state,
                      [&](auto& pmcmc_state)
                      {
                          auto& mcmc_state = *pmcmc_state;

                          typedef typename std::remove_reference<decltype(mcmc_state)>::type
                              mcmc_state_t;

                          omulticanonical_state.attr("state") = boost::any(mcmc_state);

                          multicanonical_block_state<mcmc_state_t>::make_dispatch
                              (omulticanonical_state,
                               [&](auto& mc_state)
                               {
                                   auto ret_ = mcmc_sweep(*mc_state, rng);
                                   ret = tuple_apply([&](auto&... args){ return python::make_tuple(args...); }, ret_);
                               });
                      });
             },
             false);
    };
    overlap_block_state::dispatch(dispatch);
    return ret;
#endif
}

void export_layered_overlap_blockmodel_multicanonical_multiflip()
{
    using namespace boost::python;
    def("multicanonical_layered_overlap_multiflip_sweep",
        &multicanonical_layered_overlap_multiflip_sweep);
}
