/*
 * Copyright (c) 2017-2020. 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.util.Comparator;

import org.hedgecode.snooker.api.Seeding;

/**
 * Set of Comparators for {@link Seeding}.
 * 1. Sorting by Event {@link EventComparator};
 * 2. Sorting by Player {@link PlayerComparator};
 * 3. Sorting by Seeding Number {@link SeedingComparator}.
 *
 * @author Dmitry Samoshin aka gotty
 */
public enum SeedingComparators {

    EVENT   ( new EventComparator() ),
    PLAYER  ( new PlayerComparator() ),
    SEEDING ( new SeedingComparator() );

    private Comparator<Seeding> comparator;

    SeedingComparators(Comparator<Seeding> comparator) {
        this.comparator = comparator;
    }

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

    static class EventComparator implements Comparator<Seeding> {

        @Override
        public int compare(Seeding seeding1, Seeding seeding2) {
            return seeding1.eventId() - seeding2.eventId();
        }

    }

    static class PlayerComparator implements Comparator<Seeding> {

        @Override
        public int compare(Seeding seeding1, Seeding seeding2) {
            return seeding1.playerId() - seeding2.playerId();
        }

    }

    static class SeedingComparator implements Comparator<Seeding> {

        @Override
        public int compare(Seeding seeding1, Seeding seeding2) {
            return seeding1.seeding() - seeding2.seeding();
        }

    }

}