/*
  http-base - Extensions to jdk.httpserver
  Copyright (C) 2021  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.httpserver.base;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * Eine Gruppe aus Ranges
 * 
 * @author Ulrich Hilger
 * @version 1, 11.06.2021
 */
public class RangeGroup {
    private List<Range> ranges;
    private long totalSize;

    /**
     * Ein neues Objekt der Klasse RangeGroup erzeugen
     */
    public RangeGroup() {
      ranges = new ArrayList();
    }

    /**
     * Dieser RangeGroup eine Range hinzufuegen.
     *
     * @param range die Range, die dieser RangeGroup hinzugefuegt werden soll
     */
    public void addRange(Range range) {
      ranges.add(range);
      totalSize += range.getEnd() - range.getStart();
    }

    /**
     * Die Gesamtgr&ouml;&szlig;e dieser RangeGroup ermitteln, also die Summe
     * der Anzahl von Bytes aller ihrer Ranges.
     *
     * @return die Gr&ouml;&szlig;e dieser RangeGroup in Bytes
     */
    public long getSize() {
      return totalSize;
    }

    /**
     * Einen Iterator &uuml;ber die Ranges dieser RangeGroup abrufen
     *
     * @return Iterator &uuml;ber die Ranges dieser RangeGroup
     */
    public Iterator<Range> getRanges() {
      return ranges.iterator();
    }
}