/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2010 University of Bonn. All rights reserved.
 * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
 */

/*
 * TranslateAction.cpp
 *
 *  Created on: May 10, 2010
 *      Author: heber
 */

// include config.h
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "Helpers/MemDebug.hpp"

#include "Actions/AtomAction/TranslateAction.hpp"
#include "Actions/ActionRegistry.hpp"
#include "Helpers/Log.hpp"
#include "atom.hpp"
#include "LinearAlgebra/Vector.hpp"
#include "Helpers/Verbose.hpp"
#include "World.hpp"

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

#include "UIElements/UIFactory.hpp"
#include "UIElements/Dialog.hpp"
#include "Actions/ValueStorage.hpp"

/****** AtomTranslateAction *****/

// memento to remember the state when undoing

class AtomTranslateState : public ActionState {
public:
  AtomTranslateState(const std::vector<atom*> &_selectedAtoms, const Vector &_v, const bool _periodic) :
    selectedAtoms(_selectedAtoms),
    v(_v),
    periodic(_periodic)
  {}
  std::vector<atom*> selectedAtoms;
  Vector v;
  bool periodic;
};

const char AtomTranslateAction::NAME[] = "translate-atoms";

AtomTranslateAction::AtomTranslateAction() :
  Action(NAME)
{}

AtomTranslateAction::~AtomTranslateAction()
{}

void AtomTranslate(Vector &x, bool periodic = false) {
  ValueStorage::getInstance().setCurrentValue(AtomTranslateAction::NAME, x);
  ValueStorage::getInstance().setCurrentValue("periodic", periodic);
  ActionRegistry::getInstance().getActionByName(AtomTranslateAction::NAME)->call(Action::NonInteractive);
};

Dialog* AtomTranslateAction::fillDialog(Dialog *dialog) {
  ASSERT(dialog,"No Dialog given when filling action dialog");

  dialog->queryVector(NAME, false, ValueStorage::getInstance().getDescription(NAME));
  dialog->queryBoolean("periodic", ValueStorage::getInstance().getDescription("periodic"));

  return dialog;
}

Action::state_ptr AtomTranslateAction::performCall() {
  Vector v;
  bool periodic = false;
  Box &domain = World::getInstance().getDomain();
  std::vector<atom *> selectedAtoms = World::getInstance().getSelectedAtoms();

  ValueStorage::getInstance().queryCurrentValue(NAME, v);
  if (!ValueStorage::getInstance().queryCurrentValue("periodic", periodic, true))
    periodic = false;

  // TODO: use AtomSet::translate
  for (std::vector<atom *>::iterator iter = selectedAtoms.begin(); iter != selectedAtoms.end(); ++iter) {
    *(*iter) += v;
    if (periodic)
      (*iter)->setPosition(domain.WrapPeriodically((*iter)->getPosition()));
  }

  return Action::state_ptr(new AtomTranslateState(selectedAtoms, v, periodic));
}

Action::state_ptr AtomTranslateAction::performUndo(Action::state_ptr _state) {
  AtomTranslateState *state = assert_cast<AtomTranslateState*>(_state.get());
  Box &domain = World::getInstance().getDomain();

  for (std::vector<atom *>::iterator iter = state->selectedAtoms.begin(); iter != state->selectedAtoms.end(); ++iter) {
    *(*iter) -= state->v;
    if (state->periodic)
      (*iter)->setPosition(domain.WrapPeriodically((*iter)->getPosition()));
  }

  return Action::state_ptr(_state);
}

Action::state_ptr AtomTranslateAction::performRedo(Action::state_ptr _state){
  AtomTranslateState *state = assert_cast<AtomTranslateState*>(_state.get());
  Box &domain = World::getInstance().getDomain();

  for (std::vector<atom *>::iterator iter = state->selectedAtoms.begin(); iter != state->selectedAtoms.end(); ++iter) {
    *(*iter) += state->v;
    if (state->periodic)
      (*iter)->setPosition(domain.WrapPeriodically((*iter)->getPosition()));
  }

  return Action::state_ptr(_state);
}

bool AtomTranslateAction::canUndo() {
  return true;
}

bool AtomTranslateAction::shouldUndo() {
  return true;
}

const string AtomTranslateAction::getName() {
  return NAME;
}