#ifndef __AlertBase_h_
#define __AlertBase_h_

#include "../misc_framework/GenericDataNodes.h"

// All alert definitions must inherit from AlertBase.

class Alert : public GenericDataNode
{
private:
  double _quality;
  std::string _msg, _altMsg;
  int _count;
  bool _qualityValid;
public:
  void getQuality(bool &valid, double &quality) const
  { valid = _qualityValid; quality = _quality; }
  std::string const &getMsg() const { return _msg; }
  std::string const &getAltMsg() const { return _altMsg; }
  int getCount() const { return _count; }

  static std::string durationString(time_t fromTime, time_t toTime);
  static std::string formatPrice(double price, bool alwaysShowSign = false);

  void getInteger(bool &valid, Integer &value) const;
  void getDouble(bool &valid, double &value) const;
  void getString(bool &valid, std::string &value) const;

protected:
  Alert();
  static std::string BLANK;

  // Quality defaults to not valid.
  void report(std::string const &msg, std::string const &altMsg=BLANK);
  void report(std::string const &msg, double quality)
  { report(msg, BLANK, quality); }
  void report(std::string const &msg, std::string const &altMsg, 
	      double quality);

public:
  // This is used by numerous alerts.  We start with scaler data, then convert
  // it to an alert when two values cross each other.
  enum AboveOrBelow { ccEqual, ccAbove, ccBelow };
};

#endif