#ifndef _OWLPS_POSITIONING_REQUEST_HH_
#define _OWLPS_POSITIONING_REQUEST_HH_

class Mobile ;

#include "measurement.hh"
#include "timestamp.hh"

#include <ctime>
#include <boost/tr1/unordered_map.hpp>
#include <ostream>

/// Represents a request sent by a Mobile
class Request
{
protected:
  /// The mobile that sent the request
  Mobile *mobile ;
  /// Local date of the request on the mobile
  Timestamp timestamp ;
  /// List of Measurement of the request
  /** Note that this is not a pointer list, values are actually stored.
      The \em string parameter is the MAC address of the AP. */
  std::tr1::unordered_map<std::string, Measurement> measurements ;

public:
  /// Constructs a Request from a list of Measurement (or default constructor)
  Request(const std::tr1::unordered_map<std::string, Measurement>
          &_measurements =
            std::tr1::unordered_map<std::string, Measurement>()) ;
  /// Constructs a Request from a timestamp and (possibly) a Measurement list
  Request(const Timestamp &_timestamp,
          const std::tr1::unordered_map<std::string, Measurement>
          &_measurements =
            std::tr1::unordered_map<std::string, Measurement>()) ;
  /// \brief Constructs a request from a mobile and a timestamp and (possibly)
  /// a Measurement list
  Request(const Mobile *_mobile, const Timestamp &_timestamp,
          const std::tr1::unordered_map<std::string, Measurement>
          &_measurements =
            std::tr1::unordered_map<std::string, Measurement>()) ;
  /// Copy constructor
  Request(const Request &source) ;

  virtual ~Request(void) ;

  /** @name Read accessors */
  //@{
  /// #mobile read accessor
  Mobile* get_mobile(void) const ;
  /// #timestamp read accessor
  const Timestamp& get_timestamp(void) const ;
  /// #measurements read accessor
  const std::tr1::unordered_map<std::string, Measurement>&
  get_measurements(void) const ;
  //@}

  /** @name Write accessors */
  //@{
  /// #mobile write accessor
  void set_mobile(const Mobile *_mobile) ;
  /// #timestamp write accessor
  void set_timestamp(const Timestamp &_timestamp) ;
  /// #measurements write accessor
  void set_measurements(const std::tr1::unordered_map
                        <std::string, Measurement> &_measurements) ;
  /// Reinitialises all attributes
  void clear(void) ;
  //@}

  /** @name Operators */
  //@{
  const Request& operator=(const Request &source) ;
  bool operator==(const Request &comp) const ;
  bool operator!=(const Request &comp) const ;
  operator bool(void) const ; ///< Cast to bool operator
  //@}

  /// Displays a Request
  friend std::ostream &operator<<(std::ostream &os, const Request &r) ;
} ;



/* *** Read accessors *** */


inline Mobile* Request::get_mobile() const
{
  return mobile ;
}


inline const Timestamp& Request::get_timestamp() const
{
  return timestamp ;
}


inline const std::tr1::unordered_map<std::string, Measurement>&
Request::get_measurements(void) const
{
  return measurements ;
}



/* *** Write accessors *** */


inline void Request::set_mobile(const Mobile *_mobile)
{
  mobile = const_cast<Mobile*>(_mobile) ;
}


inline void Request::set_timestamp(const Timestamp &_timestamp)
{
  timestamp = _timestamp ;
}


inline void Request::set_measurements(const std::tr1::unordered_map
                                      <std::string, Measurement> &_measurements)
{
  measurements = _measurements ;
}



/* *** Operators *** */


inline bool Request::operator!=(const Request &comp) const
{
  return !(*this == comp) ;
}


/**
 * @return \em false if the Request is empty.
 * @return \em true if at least one attribute is initialised.
 */
inline Request::operator bool() const
{
  return
    mobile != NULL ||
    timestamp ||
    measurements.size() > 0 ;
}



#endif // _OWLPS_POSITIONING_REQUEST_HH_