/*
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 */
package lab2stuff;

/**
 *
 * @author jcmt
 */
public class LibraryDate
{
  private int day;
  private int month;
  private int year;
  
  public LibraryDate()
  {
     // Ask the user for current date
     // So default value for a date should be 
     // current date.
          
  }
  
  public LibraryDate(int d, int m, int y)
  {
    if (!(setDay(d)))   
     day = 10;  //ask for a new day or 
                  //put in current day
  }
  
  public boolean setDay(int d)
  {
  if ((d > 0) && (d < 31) )
  {
     day = d;
     return true;
  }
     return false;
  }
  
  
  
  public int compareDates(LibraryDate dt)
  {
     // returns a number of days 
     // +pos means not due yet
     // -neg means overdue
     /*
     int dtm = dt.month * 30;  // month-1 ?
     dtm = dtm + dt.day; 
     int cur = month * 30;
     cur = cur + day;
       
     return dtm - cur;
     */
    
     
     // compare months
     /*
      * if (month == dt.month)
        return dt.day - day;
     if ()
     */   
        
     int sm = dt.month - month;
     int sd = dt.day - day;
     
     return (sm * 30) + sd;
     
     
     
    //return 0; 
  }
}