#include "stdstuff.h"

#include "Date.h"


void realMain () {

  Date d, d2;
  int days;
  char day_names [][10] = { "Monday", "Tuesday", "Wednesday", "Thursday",
                            "Friday", "Saturday", "Sunday" };

  // If the following is included, the constructor will throw an exception.
  // Date dummy (-1, -1, -1);

  for (;;) {

    cout << "Enter dd mm yyyy (invalid values to terminate): ";
    d.read (cin);

    if (cin.fail()) {
      return;
    }

    cout << "Enter days to move date forward (may be -ve): ";
    cin >> days;

    try {
      d.move (days);
      cout << "The new date is ";
      d.write (cout);
      cout << ".  That is a " << day_names[d.dayInWeek()- 1] << ".\n";
    }
    catch (invalid_argument &e) {
      cout << "Date not moved - new date would be outside valid range.\n";
      cout << "The date is still ";
      d.write (cout);
      cout << endl;
    }

    // a simple example of using a function which returns a date
    d2 = d.nextDay();
    cout << "The day after that is ";
    d2.write(cout);
    cout << endl;

    // a trickier way of doing the same thing
    cout << "The day after that is ";
    d.nextDay().write(cout);
    cout << endl;

    cout << "Comparing that day with the next day produces "
         << d.compareTo(d.nextDay()) << endl;

  }

}


int main () {

  try {

    realMain ();

  }
  catch (exception &e) { // catches all uncaught exceptions

    cout << "\nException <" << e.what() << "> occurred.\n";

  }

  pause ();
  return 0;

}