/*
 * Copyright (c) 2018. 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.chess.environment;

import java.util.Locale;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;

import org.hedgecode.chess.persistence.PersistenceUtils;

/**
 * Environment execution context.
 *
 * @author Dmitry Samoshin aka gotty
 */
public final class Environment {

    private final Locale locale;
    private final EntityManager entityManager;

    public Environment(
            Locale locale,
            EntityManager entityManager) {
        this.locale = locale;
        this.entityManager = entityManager;
    }

    public Locale getLocale() {
        return locale;
    }

    public EntityManager getEntityManager() {
        return entityManager;
    }

    public static Environment init() {
        EntityManagerFactory entityManagerFactory = PersistenceUtils.createEntityManagerFactory();
        EnvironmentSetter.setCurrentContext(
                new Environment(
                        Locale.getDefault(),
                        entityManagerFactory.createEntityManager()
                )
        );
        return Environment.currentContext();
    }

    static final ThreadLocal<Environment> contextHolder = new ThreadLocal<>();

    public static Environment currentContext() {
        return contextHolder.get();
    }

}