/*
 * Copyright (c) 2017. 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.Match;

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

    ROUND_NUMBER ( new RoundNumberComparator() ),
    EVENT        ( new EventComparator() );

    private Comparator<Match> comparator;

    MatchComparators(Comparator<Match> comparator) {
        this.comparator = comparator;
    }

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

    static class RoundNumberComparator implements Comparator<Match>, Serializable {

        @Override
        public int compare(Match match1, Match match2) {
            return match1.round() == match2.round()
                    ? match1.number() - match2.round()
                    : match2.round() - match1.round();
        }

    }

    static class EventComparator implements Comparator<Match>, Serializable {

        @Override
        public int compare(Match match1, Match match2) {
            return match1.eventId() - match2.eventId();
        }

    }

}