// $Id$
//
//  Copyright (C) 2003-2006 Rational Discovery LLC
//
//   @@ All Rights Reserved @@
//  This file is part of the RDKit.
//  The contents are covered by the terms of the BSD license
//  which is included in the file license.txt, found at the root
//  of the RDKit source tree.
//
#include <RDBoost/Wrap.h>
#include <GraphMol/MolChemicalFeatures/MolChemicalFeature.h>
#include <GraphMol/MolChemicalFeatures/MolChemicalFeatureFactory.h>
#include <boost/python/register_ptr_to_python.hpp>
#include <fstream>
#include <sstream>
#include <iostream>
#include <GraphMol/MolChemicalFeatures/FeatureParser.h>
namespace python = boost::python;
using namespace RDKit;

void wrap_MolChemicalFeat();
void wrap_factory();
void wrap_ChemicalFeatureUtils();

namespace RDKit {
MolChemicalFeatureFactory *buildFeatFactory(std::string fileName) {
  std::ifstream inStream(fileName.c_str());
  if (!inStream.is_open()) {
    std::string errorstring = "File: " + fileName + " could not be opened.";
    PyErr_SetString(PyExc_IOError, errorstring.c_str());
    python::throw_error_already_set();
  }
  std::istream &instrm = static_cast<std::istream &>(inStream);
  return buildFeatureFactory(instrm);
}

MolChemicalFeatureFactory *buildFeatFactoryFromString(std::string fdefString) {
  std::istringstream inStream(fdefString);
  std::istream &instrm = static_cast<std::istream &>(inStream);
  return buildFeatureFactory(instrm);
}
}

void translate_FeatureFileParse_error(
    RDKit::FeatureFileParseException const &e) {
  std::stringstream err;
  err << "Error parsing feature file at line " << e.lineNo() << ":"
      << std::endl;
  err << e.message() << std::endl;
  PyErr_SetString(PyExc_ValueError, err.str().c_str());
  python::throw_error_already_set();
}

BOOST_PYTHON_MODULE(rdMolChemicalFeatures) {
  python::scope().attr("__doc__") =
      "Module containing from chemical feature and functions to generate the";
  python::register_exception_translator<RDKit::FeatureFileParseException>(
      &translate_FeatureFileParse_error);

  python::def(
      "BuildFeatureFactory", RDKit::buildFeatFactory,
      "Construct a feature factory given a feature definition in a file",
      python::return_value_policy<python::manage_new_object>());
  python::def("BuildFeatureFactoryFromString",
              RDKit::buildFeatFactoryFromString,
              "Construct a feature factory given a feature definition block",
              python::return_value_policy<python::manage_new_object>());

  wrap_MolChemicalFeat();
  wrap_factory();
  wrap_ChemicalFeatureUtils();
}
