/*
 * Copyright 2016 Klaus Sausen
 *
 * 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.vaadin.firitin.testdomain.aspect;

import java.util.Locale;

/**
 * This is a possibility how to add a read-only aspect with Java 8 default methods to several entities at once by only
 * implementing the interface. If the test class {@link org.vaadin.firitin.testdomain.Person} had a gender the
 * salutation could even be done gender specific.
 * 
 * @author Klaus Sausen
 */
public interface Salutation extends LocaleAware {

    /**
     * (Usually the texts are in external resources)
     * 
     * @return a localized salutation
     */
    default String getLocalizedSalutation() {

        Locale locale = getLocale();
        if (locale == null) {
            return null;
        }
        String language = locale.getLanguage();
        if (language.equals(Locale.ENGLISH.getLanguage())) {
            return "Dear {0},";
        } else if (language.equals(Locale.FRANCE.getLanguage())) {
            return "Cher {0},";
        }
        return "{0},";

    }

}