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package ee.tlu.htk.dippler.utils;

import java.util.Calendar;

/**
 *
 * @author raido
 */
public class Utility {
    
    /**
     * Get calendar instance with current time 00:00:00:00
     * 
     * @return Calendar instance for current time
     */
    public static Calendar getCalendarInstance() {
        Calendar current_date = Calendar.getInstance();
        current_date.set(Calendar.HOUR_OF_DAY, 0);
        current_date.set(Calendar.MINUTE, 0);
        current_date.set(Calendar.SECOND, 0);
        current_date.set(Calendar.MILLISECOND, 0);
        return current_date;
    }
    
    /**
     * Get calendar instance with preset timestamp
     * @param seconds
     * @return Calendar instance for set time
     */
    
    public static Calendar getCalendarInstance( int seconds ) {
        Calendar new_date = Calendar.getInstance();
        new_date.setTimeInMillis( toMilliseconds( seconds ) );
        return new_date;
    }
    
    /**
     * Get time in seconds
     * 
     * @return Long timestamp from 1970
     */
    
    public static long getTime() {
        return ( System.currentTimeMillis() / 1000L );
    }
    
    /**
     * Convert seconds into milliseconds
     * @param seconds int timestamp
     * @return Time in milliseconds
     */
    
    public static long toMilliseconds( int seconds ) {
        return seconds * 1000L;
    }
}