/*
 * 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.json;

import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.hedgecode.snooker.api.CollectionEntity;
import org.hedgecode.snooker.api.IdEntity;

/**
 * Abstract Collection Entity to JSON deserialize.
 *
 * @author Dmitry Samoshin aka gotty
 */
public abstract class JsonCollectionEntity<E extends IdEntity>
        implements CollectionEntity<E>, JsonSerializable
{
    private final Map<Integer, E> entities = new LinkedHashMap<>();

    protected JsonCollectionEntity(E[] entities) {
        for (E entity : entities) {
            if (entity != null)
                this.entities.put(entity.getId(), entity);
        }
    }

    protected JsonCollectionEntity(List<E> entities) {
        for (E entity : entities) {
            this.entities.put(entity.getId(), entity);
        }
    }

    @Override
    public int size() {
        return entities.size();
    }

    @Override
    public boolean isEmpty() {
        return entities.isEmpty();
    }

    @Override
    public Iterator<E> iterator() {
        return entities.values().iterator();
    }

    @Override
    public E byId(int id) {
        return entities.get(id);
    }

    protected void sort(Comparator<E> comparator) {
        List<E> entityList = new LinkedList<>(entities.values());
        Collections.sort(
                entityList, comparator
        );
        entities.clear();
        for (E entity : entityList) {
            entities.put(entity.getId(), entity);
        }
    }

    @Override
    public void sortById() {
        sort(
                (entity1, entity2) -> entity1.getId() - entity2.getId()
        );
    }

}