package de.uhilger.filecms.pub;

import java.io.File;
import java.util.Comparator;

/**
 *
 * @author ulrich
 */
public class FileDateComparator implements Comparator {
  
  private String order;
  
  public FileDateComparator(String order) {
    this.order = order;
  }

  @Override
  public int compare(Object obj1, Object obj2) {
    File f1 = null;
    File f2 = null;
    if(obj1 instanceof File) {
      f1 = (File) obj1;
    }
    if(obj2 instanceof File) {
      f2 = (File) obj2;
    }
    if(f1 != null && f2 != null) {
      long l1 = f1.lastModified();
      long l2 = f2.lastModified();
      if(order != null && order.equalsIgnoreCase("asc")) {
          if(l1 < l2) {
            return -1;
          } else if(l2 > l1) {
            return 1;
          } else {
            return 0;
          }
      } else {
          if(l1 < l2) {
            return 1;
          } else if(l2 > l1) {
            return -1;
          } else {
            return 0;
          }
      }
    } else {
      return 0;
    }
  }
  
}