/*
 * Copyright (c) 2017-2019. Developed by Hedgecode.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.hedgecode.snooker.compare;

import java.io.Serializable;
import java.util.Comparator;

import org.hedgecode.snooker.api.Round;

/**
 * Set of Comparators for {@link Round}.
 * 1. Sorting by Round Number {@link RoundComparator};
 * 2. Sorting by Event {@link EventComparator};
 *
 * @author Dmitry Samoshin aka gotty
 */
public enum RoundComparators {

    ROUND ( new RoundComparator() ),
    EVENT ( new EventComparator() );

    private Comparator<Round> comparator;

    RoundComparators(Comparator<Round> comparator) {
        this.comparator = comparator;
    }

    public Comparator<Round> comparator() {
        return comparator;
    }

    static class RoundComparator implements Comparator<Round>, Serializable {

        @Override
        public int compare(Round round1, Round round2) {
            return round1.round() - round2.round();
        }

    }

    static class EventComparator implements Comparator<Round>, Serializable {

        @Override
        public int compare(Round round1, Round round2) {
            return round1.eventId() - round2.eventId();
        }

    }

}