///////////////////////////////////////////////////////////////
// MT4Q2.h - Logger behaves like string                      //
//                                                           //
// Jim Fawcett, CSE687 - Object Oriented Design, Spring 2012 //
///////////////////////////////////////////////////////////////

#include "MT4Q2.h"
#include <Windows.h>
#include <sstream>
#include <iostream>

template <typename T>
std::string ToString(const T& t)  // doesn't need to be part of answer
{
  std::ostringstream out;
  out.fill('0');
  out.width(2);
  out << t;
  return out.str();
}

std::string dateTime()  // doesn't need to be part of answer
{
  ::SYSTEMTIME st;
  ::GetLocalTime(&st);
  std::string dt = ToString(st.wMonth) + "/";
  dt.append(ToString(st.wDay) + "/");
  dt.append(ToString(st.wYear) + " ");
  dt.append(ToString(st.wHour) + ":");
  dt.append(ToString(st.wMinute) + ":");
  dt.append(ToString(st.wSecond) + " ");
  return dt;
}

Logger::Logger()
{
  // assign dateTime to base part of logger
  static_cast<std::string&>(*this) = dateTime();
}

void Logger::addMessage(const std::string& msg)
{
  std::string temp = msg + ": ";
  static_cast<std::string&>(*this) = temp + *this + "\n";
}

int main()
{
  std::cout << "\n  MT4Q2 - Logger behaves like a string";
  std::cout << "\n ======================================\n";

  Logger logger;
  logger.addMessage("This is a message");
  logger.append("  first log item\n");
  logger.append("  second log item\n");
  std::cout << "\n  " << logger;
  std::cout << "\n  logger message size = " << logger.size() << " bytes";
  std::cout << "\n\n";
  return 0;
}