// Filename:   NamedTimerPlay.cxx
//
// A implementation of countdown chess clocks
// Two clocks are initialized to the minute:second values given as input
// Minute:second pairs are read and applied to alternate clocks
// until end-of-file or a clock expires
// Values of both clocks are printed after each clock update
// By Beth Katz and David Hutchens, updated Spring 1998 and Fall 2002

#include <iostream>
#include "NamedTimer.h"

using namespace std;

// read in a time as minutes:seconds 
int readTime(int & minutes, int & seconds)
{
   char ch;      // should be a colon between minutes and seconds

   cout << "Time used in minutes:seconds? ";
   cin >> minutes >> ch >> seconds;
   return cin.good();
}

// get initial time values from user and fill timer information
NamedTimer initializeTimer(const char * timerName)
{
   int minutes, seconds;
   char colon;

   cout << "Enter time for " << timerName << " in minutes:seconds => ";
   cin >> minutes >> colon >> seconds;
   NamedTimer theTimer(minutes, seconds, timerName);
   return theTimer;
}

// print out the timer values for both players
void printTimers(const NamedTimer & white, const NamedTimer & black)
{
   cout << "       " << white << "   " << black << endl;
}

int main ( )
{
   NamedTimer white;
   NamedTimer black;
   int blacksTurn = 0;
   int minutes, seconds;

   white = initializeTimer("White");
   black = initializeTimer("Black");

   printTimers(white, black);

   while ( !(white.outOfTime( ) || black.outOfTime( ))
           && readTime(minutes, seconds) ) {
      if (blacksTurn) {
         blacksTurn = false;
         black.subtract(minutes, seconds);
      } else {
         blacksTurn = true;
         white.subtract(minutes, seconds);
      }
      printTimers(white, black);
   }

   if (white.outOfTime( )) {
      cout << "White ran out of time" << endl;
   } else {
      cout << "Black ran out of time" << endl;
   }

   return 0;
}