package shared;

import java.util.*;

/**
 * This class extends the standard Date class and customizes the toString method. 
 * This class also contains some helper methods to make the life easier.
 * @author buetow
 *
 */
public class MyDate extends Date {
	private final static long serialVersionUID = 1L;
	private final static String [] DAYS = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
	
	/**
	 * Copy constructor.
	 * @param data Specifies the date objekt to copy the time from.
	 */
	public MyDate(Date date) {
		super(date.getTime());
	}
	
	/**
	 * @see java.lang.Object#toString()
	 */
	public String toString() {
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(this);
		
		String sYear = addZerosToFront(calendar.get(Calendar.YEAR), 4);
		String sMonth = addZerosToFront(calendar.get(Calendar.MONTH) + 1, 2);
		String sDays = addZerosToFront(calendar.get(Calendar.DAY_OF_MONTH), 2);
		String sHours= addZerosToFront(calendar.get(Calendar.HOUR), 2);
		String sMinutes = addZerosToFront(calendar.get(Calendar.MINUTE), 2);
		String sDay = DAYS[calendar.get(Calendar.DAY_OF_WEEK)-1];
		
		return sDays + "." + sMonth + "." + sYear + " " + sHours + ":" + sMinutes + " " + sDay;
	}
	
	/**
	 * This method adds zeros in front of a number and returns it as a string. 
	 * @param iValue Specifies the number to add zeros to.
	 * @param iWantedLength Specifies the wanted max length of the string.
	 * @return Returns the number represented as a string with additional zeros on front.
	 */
	public static String addZerosToFront(int iValue, int iWantedLength) {
		String sValue = iValue + "";
		
		while (sValue.length() < iWantedLength)
			sValue = "0" + sValue;
		
		return sValue;
	}
}