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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.document.library.web.internal.template;

import com.liferay.document.library.configuration.DLConfiguration;
import com.liferay.document.library.kernel.service.DLAppLocalService;
import com.liferay.document.library.kernel.service.DLAppService;
import com.liferay.document.library.kernel.service.DLFileEntryTypeLocalService;
import com.liferay.document.library.kernel.service.DLFileEntryTypeService;
import com.liferay.document.library.kernel.util.DLUtil;
import com.liferay.document.library.web.constants.DLPortletKeys;
import com.liferay.portal.configuration.metatype.bnd.util.ConfigurableUtil;
import com.liferay.portal.kernel.language.LanguageUtil;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.portletdisplaytemplate.BasePortletDisplayTemplateHandler;
import com.liferay.portal.kernel.portletdisplaytemplate.PortletDisplayTemplateManager;
import com.liferay.portal.kernel.repository.model.FileEntry;
import com.liferay.portal.kernel.template.TemplateHandler;
import com.liferay.portal.kernel.template.TemplateVariableGroup;
import com.liferay.portal.kernel.util.PortalUtil;
import com.liferay.portal.kernel.util.StringPool;

import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.osgi.service.component.annotations.Activate;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Modified;

/**
 * @author Eduardo Garcia
 */
@Component(
	configurationPid = "com.liferay.document.library.configuration.DLConfiguration",
	immediate = true,
	property = {"javax.portlet.name=" + DLPortletKeys.DOCUMENT_LIBRARY},
	service = TemplateHandler.class
)
public class DocumentLibraryPortletDisplayTemplateHandler
	extends BasePortletDisplayTemplateHandler {

	@Override
	public String getClassName() {
		return FileEntry.class.getName();
	}

	@Override
	public Map getCustomContextObjects() {
		Map contextObjects = new HashMap<>();

		try {
			contextObjects.put("dlUtil", DLUtil.getDL());
		}
		catch (SecurityException se) {
			_log.error(se, se);
		}

		return contextObjects;
	}

	@Override
	public String getName(Locale locale) {
		String portletTitle = PortalUtil.getPortletTitle(
			DLPortletKeys.DOCUMENT_LIBRARY, locale);

		return portletTitle.concat(StringPool.SPACE).concat(
			LanguageUtil.get(locale, "template"));
	}

	@Override
	public String getResourceName() {
		return DLPortletKeys.DOCUMENT_LIBRARY;
	}

	@Override
	public Map getTemplateVariableGroups(
			long classPK, String language, Locale locale)
		throws Exception {

		Map templateVariableGroups =
			super.getTemplateVariableGroups(classPK, language, locale);

		String[] restrictedVariables = getRestrictedVariables(language);

		TemplateVariableGroup documentUtilTemplateVariableGroup =
			new TemplateVariableGroup("document-util", restrictedVariables);

		documentUtilTemplateVariableGroup.addVariable(
			"dl-util", DLUtil.class, "dlUtil");

		templateVariableGroups.put(
			"document-util", documentUtilTemplateVariableGroup);

		TemplateVariableGroup documentServicesTemplateVariableGroup =
			new TemplateVariableGroup("document-services", restrictedVariables);

		documentServicesTemplateVariableGroup.setAutocompleteEnabled(false);

		documentServicesTemplateVariableGroup.addServiceLocatorVariables(
			DLAppLocalService.class, DLAppService.class,
			DLFileEntryTypeLocalService.class, DLFileEntryTypeService.class);

		templateVariableGroups.put(
			documentServicesTemplateVariableGroup.getLabel(),
			documentServicesTemplateVariableGroup);

		TemplateVariableGroup fieldsTemplateVariableGroup =
			templateVariableGroups.get("fields");

		fieldsTemplateVariableGroup.empty();

		fieldsTemplateVariableGroup.addCollectionVariable(
			"documents", List.class, PortletDisplayTemplateManager.ENTRIES,
			"document", FileEntry.class, "curFileEntry", "title");

		return templateVariableGroups;
	}

	@Activate
	@Modified
	protected void activate(Map properties) {
		_dlConfiguration = ConfigurableUtil.createConfigurable(
			DLConfiguration.class, properties);
	}

	@Override
	protected String getTemplatesConfigPath() {
		return _dlConfiguration.displayTemplatesConfig();
	}

	private static final Log _log = LogFactoryUtil.getLog(
		DocumentLibraryPortletDisplayTemplateHandler.class);

	private volatile DLConfiguration _dlConfiguration;

}