/*
 * Project: MoleCuilder
 * Description: creates and alters molecular systems
 * Copyright (C)  2010-2011 University of Bonn. All rights reserved.
 * Please see the LICENSE file or "Copyright notice" in builder.cpp for details.
 */

/*
 * InputAction.cpp
 *
 *  Created on: May 8, 2010
 *      Author: heber
 */

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

#include "CodePatterns/MemDebug.hpp"

#include "CodePatterns/Log.hpp"
#include "molecule.hpp"
#include "MoleculeListClass.hpp"
#include "Parser/FormatParserStorage.hpp"
#include "CodePatterns/Verbose.hpp"
#include "World.hpp"

#include <iostream>
#include <string>

#include <boost/filesystem/fstream.hpp>

#include "Actions/WorldAction/InputAction.hpp"

using namespace MoleCuilder;

// and construct the stuff
#include "InputAction.def"
#include "Action_impl_pre.hpp"
/** =========== define the function ====================== */
Action::state_ptr WorldInputAction::performCall() {
//  MoleculeListClass *molecules = World::getInstance().getMolecules();
//  molecule *mol = NULL;
  boost::filesystem::ifstream test;
  FormatParserStorage &parsers = FormatParserStorage::getInstance();

  // obtain information
  getParametersfromValueStorage();

  LOG(0, "Config file given " << params.filename << ".");
  // using the filename as prefix for all parsers
  std::string FilenameSuffix;
  std::string FilenamePrefix;
  if (params.filename.has_filename()) {
    // get suffix
#if BOOST_VERSION >= 104600
    FilenameSuffix = params.filename.extension().string().substr(1); // remove the prefixed "."
    FilenamePrefix = params.filename.stem().string();
#else
    FilenameSuffix = params.filename.extension().substr(1); // remove the prefixed "."
    FilenamePrefix = params.filename.stem();
#endif
    LOG(1, "Setting config file name prefix to " << FilenamePrefix << ".");
    parsers.SetOutputPrefixForAll(FilenamePrefix);
  } else {
    ELOG(1, "Input file does not have a suffix, cannot recognize format.");
    return Action::failure;
  }

  // parsing file if present
  if (!boost::filesystem::exists(params.filename)) {
    LOG(1, "Specified config file " << params.filename << " not found.");
    // DONT FAIL: it's just empty and we use the name. // return Action::failure;
    // nonetheless, add to output formats
    parsers.setOutputFormat( parsers.getTypeFromSuffix(FilenameSuffix) );
  } else {
    LOG(1, "Specified config file found, parsing ... ");

    // parse the file
    test.open(params.filename);
    parsers.load(test, FilenameSuffix);
    parsers.setOutputFormat( parsers.getTypeFromSuffix(FilenameSuffix) );
    test.close();

    // set file name of last molecule
    MoleculeList::const_iterator iter = World::getInstance().getMolecules()->ListOfMolecules.end();
    iter--;
    (*iter)->SetNameFromFilename(FilenamePrefix.c_str());
    LOG(0, "Chemical formula is " << (*iter)->getFormula());
  }
  return Action::success;
}

Action::state_ptr WorldInputAction::performUndo(Action::state_ptr _state) {
//  ParserLoadXyzState *state = assert_cast<ParserLoadXyzState*>(_state.get());

  return Action::failure;
//  string newName = state->mol->getName();
//  state->mol->setName(state->lastName);
//
//  return Action::state_ptr(new ParserLoadXyzState(state->mol,newName));
}

Action::state_ptr WorldInputAction::performRedo(Action::state_ptr _state){
  return Action::failure;
}

bool WorldInputAction::canUndo() {
  return false;
}

bool WorldInputAction::shouldUndo() {
  return false;
}
/** =========== end of function ====================== */