/*
  fm - File management class library
  Copyright (C) 2024  Ulrich Hilger

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU Affero General Public License as
  published by the Free Software Foundation, either version 3 of the
  License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU Affero General Public License for more details.

  You should have received a copy of the GNU Affero General Public License
  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
package de.uhilger.fm;

import java.io.File;
import java.io.FileFilter;

/**
 * Ein Filter zum Auslassen kleiner Versionen einer Original-Bilddatei
 * 
 * @author Ulrich Hilger
 * @version 1, 12. Mai 2021
 */
public class ImageFileFilter implements FileFilter {
  
  public static final String JPG = ".jpg";
  public static final String JPEG = ".jpeg";
  public static final String PNG = ".png";
  
  public static final String B64 = "_b64"; // Base64-Encoded
  
  public static final String TN = "_tn"; // 120
  public static final String KL = "_kl"; // 240
  public static final String SM = "_sm"; // 500
  public static final String MT = "_mt"; // 700
  public static final String GR = "_gr"; // 1200  
  
    @Override
    public boolean accept(File pathname) {
      boolean pass = true;
      String fname = pathname.getName().toLowerCase();
      if(fname.endsWith(JPEG) || 
              fname.endsWith(JPG) || fname.endsWith(PNG)) {
        if(fname.contains(GR) || fname.contains(KL) || 
                fname.contains(MT) || fname.contains(SM) || 
                fname.contains(TN) || fname.contains(B64)) {
          pass = false;
        }
      }
      return pass;
    }
}