/*
 * RandomNumberDistribution_Parameters.hpp
 *
 *  Created on: Jan 6, 2011
 *      Author: heber
 */

#ifndef RANDOMNUMBERDISTRIBUTION_PARAMETERS_HPP_
#define RANDOMNUMBERDISTRIBUTION_PARAMETERS_HPP_

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

#include <iosfwd>
#include <map>

class RandomNumberDistribution;

struct RandomNumberDistribution_Parameters
{
  /** Constructor of class RandomNumberDistribution_Parameters.
   *
   *  @note sets all values to  noset_value.
   */
  RandomNumberDistribution_Parameters();

  /** Copy constructor of class RandomNumberDistribution_Parameters.
   *
   *
   *  @param _ref reference to instance to copy
   */
  RandomNumberDistribution_Parameters(const RandomNumberDistribution_Parameters &_ref);

  /** Destructor of class RandomNumberDistribution_Parameters.
   *
   */
  ~RandomNumberDistribution_Parameters();

  enum ParamList {
    param_min,
    param_max,
    param_p,
    param_t,
    param_median,
    param_sigma,
    param_alpha,
    param_mean,
    param_a,
    param_b,
    param_c,
    param_lambda
  };

  /** This value is chosen such that no parameter can have it as a sensible
   * value.
   */
  static const double noset_value;

  /** Fills the structure from the parameters obtained from \a _distribution.
   *
   * @param _distribution
   */
  void getParameters(const RandomNumberDistribution* const _distribution);

  /** Merges this parameter set with another, where other has priority.
   *
   * @note we ignore entries in \a _params with noset_value.
   *
   * @param _params other parameter set to update with
   */
  void update(const RandomNumberDistribution_Parameters &_params);

  /** Checks whether all parameters are set to noset_value values.
   *
   * noset_value
   *
   * @return true - all are equal noset_value,
   *         false - at least is not equal noset_value
   */
  bool isDefault() const;

  double min;   //!< minimum of distribution
  double max;   //!< minimum of distribution
  double p;   //!< probability of distribution
  double t;   //!< parameter t of distribution
  double median;   //!< median of distribution
  double sigma;   //!< sigma width of distribution
  double alpha;   //!< parameter alpha of distribution
  double mean;   //!< mean of distribution
  double a;   //!< triangle parameter a
  double b;   //!< triangle parameter b
  double c;   //!< triangle parameter c
  double lambda;   //!< exponential decay parameter of distribution

  typedef std::map<
      std::string,
      ParamList
      > ParamNames;

  static ParamNames params;
};

std::ostream & operator << (std::ostream& ost, const RandomNumberDistribution_Parameters &params);
std::istream & operator >> (std::istream& ist, RandomNumberDistribution_Parameters &params);

#endif /* RANDOMNUMBERDISTRIBUTION_PARAMETERS_HPP_ */