/*
 * StreamOperators.hpp
 *
 *  Created on: Apr 16, 2012
 *      Author: ankele
 */

#ifndef STREAMOPERATORS_HPP_
#define STREAMOPERATORS_HPP_




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

#include <string>
#include <iosfwd>

#include "LinearAlgebra/Vector.hpp"
#include "LinearAlgebra/RealSpaceMatrix.hpp"
#include "Box.hpp"
#include "Element/element.hpp"
#include "molecule.hpp"

#include "CodePatterns/Assert.hpp"

class Vector;
class Box;
class RealSpaceMatrix;
class molecule;
class element;

inline std::istream& operator>>(std::istream& ist, Vector& m)
{

  std::string line;
  getline(ist,line);

  if (!line.empty() && line[0] == '(')
    line.erase(0, 1);
  if (!line.empty() && line[line.size() - 1] == ')')
    line.erase(line.size() - 1, 1);
  Vector temp_vector;

  // dissect by ","
  double coord = 0.;
  int counter = 0;
  std::string::iterator olditer = line.begin();
  for(std::string::iterator iter = line.begin(); (iter != line.end()) && (counter != 3); ++iter) {
    if ((*iter == ',') || (*iter == ' ')) {
      std::istringstream stream(std::string(olditer, iter));

      stream >> coord;

      temp_vector[counter++] = coord;

      olditer = iter + 1;
    }
  }
  if ((olditer != line.begin()) && (counter != 3)) { // insert last part also

    std::istringstream stream(std::string(olditer, line.end()));
    stream >> coord;
    temp_vector[counter++] = coord;
  }
  m = temp_vector;
  return ist;
};

inline std::istream& operator>>(std::istream& ist, RealSpaceMatrix& m)
{

  std::string line;
  getline(ist,line);

  if (!line.empty() && line[0] == '(')
    line.erase(0, 1);
  if (!line.empty() && line[line.size() - 1] == ')')
    line.erase(line.size() - 1, 1);
  double temp[6];

  // dissect by ","
  double coord = 0.;
  int counter = 0;
  std::string::iterator olditer = line.begin();
  for(std::string::iterator iter = line.begin(); (iter != line.end()) && (counter != 6); ++iter) {
    if ((*iter == ',') || (*iter == ' ')) {
      std::istringstream stream(std::string(olditer, iter));

      stream >> coord;

      temp[counter++] = coord;

      olditer = iter + 1;
    }
  }
  if ((olditer != line.begin()) && (counter != 6)) { // insert last part also

    std::istringstream stream(std::string(olditer, line.end()));
    stream >> coord;
    temp[counter++] = coord;
  }
  m.set(0,0, temp[0]);
  m.set(0,1, temp[1]);
  m.set(0,2, temp[2]);
  m.set(1,0, temp[1]);
  m.set(1,1, temp[3]);
  m.set(1,2, temp[4]);
  m.set(2,0, temp[2]);
  m.set(2,1, temp[4]);
  m.set(2,2, temp[5]);
  return ist;
};

inline std::istream& operator>>(std::istream& ist, Box& m)
{
  RealSpaceMatrix M;
  ist >> M;
  m.setM(M);
  return ist;
};


inline std::istream& operator>>(std::istream& ist, const molecule* & m)
{
  std::cout << "===============   operator >> (istream, const element *) not implemented!\n";
  ASSERT(0, "operator >> (istream, const element *) not implemented!");
  return ist;
}


inline std::istream& operator>>(std::istream& ist, const element* & m)
{
  std::cout << "===============   operator >> (istream, const element *) not implemented!\n";
  ASSERT(0, "operator >> (istream, const element *) not implemented!");
  return ist;
}


inline std::istream& operator>>(std::istream& ist, std::vector<const molecule*> & m)
{
  std::cout << "===============   operator >> (istream, std::vector<const element *>) not implemented!\n";
  ASSERT(0, "operator >> (istream, std::vector<const element *>) not implemented!");
  return ist;
}


inline std::istream& operator>>(std::istream& ist, std::vector<const element*> & m)
{
  std::cout << "===============   operator >> (istream, std::vector<const element *>) not implemented!\n";
  ASSERT(0, "operator >> (istream, std::vector<const element *>) not implemented!");
  return ist;
}


inline std::istream& operator>>(std::istream& ist, std::vector<std::string> & m)
{
  std::cout << "===============   operator >> (istream, std::vector<std::string>) not implemented!\n";
  ASSERT(0, "operator >> (istream, std::vector<std::string>) not implemented!");
  return ist;
}


#endif /* STREAMOPERATORS_HPP_ */