I18nManager.java

/**
 * This file is part of alf.io.
 *
 * alf.io is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * alf.io is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with alf.io.  If not, see <http://www.gnu.org/licenses/>.
 */
package alfio.manager.i18n;

import alfio.manager.system.ConfigurationManager;
import alfio.model.ContentLanguage;
import alfio.model.system.Configuration;
import alfio.model.system.ConfigurationKeys;
import alfio.repository.EventRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

@Component
public class I18nManager {

    private final EventRepository eventRepository;
    private final ConfigurationManager configurationManager;

    @Autowired
    public I18nManager(EventRepository eventRepository, ConfigurationManager configurationManager) {
        this.eventRepository = eventRepository;
        this.configurationManager = configurationManager;
    }

    public List<ContentLanguage> getAvailableLanguages() {
        return ContentLanguage.ALL_LANGUAGES;
    }

    public List<ContentLanguage> getSupportedLanguages() {
        return ContentLanguage.findAllFor(configurationManager.getIntConfigValue(Configuration.getSystemConfiguration(ConfigurationKeys.SUPPORTED_LANGUAGES), ContentLanguage.ENGLISH_IDENTIFIER));//default to English
    }

    public List<ContentLanguage> getEventLanguages(String eventName) {
        return eventRepository.findOptionalByShortName(eventName)
            .map(event -> getEventLanguages(event.getLocales()))
            .orElse(Collections.emptyList());
    }

    public List<ContentLanguage> getEventLanguages(int eventLocales) {
        List<ContentLanguage> system = getSupportedLanguages();
        return ContentLanguage.findAllFor(eventLocales)
            .stream()
            .filter(system::contains)
            .collect(Collectors.toList());
    }
}