/b3log-solo/core/src/main/java/org/b3log/solo/processor/UserTemplateProcessor.java

/*

 * Copyright (c) 2009, 2010, 2011, 2012, B3log Team

 *

 * 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.b3log.solo.processor;



import freemarker.template.Template;

import java.io.IOException;

import java.util.Map;

import java.util.logging.Level;

import java.util.logging.Logger;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.StringUtils;

import org.b3log.latke.Keys;

import org.b3log.latke.action.AbstractCacheablePageAction;

import org.b3log.latke.annotation.RequestProcessing;

import org.b3log.latke.annotation.RequestProcessor;

import org.b3log.latke.service.LangPropsService;

import org.b3log.latke.servlet.HTTPRequestContext;

import org.b3log.latke.servlet.HTTPRequestMethod;

import org.b3log.latke.servlet.renderer.freemarker.AbstractFreeMarkerRenderer;

import org.b3log.latke.util.Locales;

import org.b3log.latke.util.freemarker.Templates;

import org.b3log.solo.model.PageTypes;

import org.b3log.solo.model.Preference;

import org.b3log.solo.processor.renderer.FrontRenderer;

import org.b3log.solo.processor.util.Filler;

import org.b3log.solo.service.PreferenceQueryService;

import org.b3log.solo.util.Skins;

import org.json.JSONObject;



/**

 * User template processor.

 * 

 * <p>

 * User can add a template (for example "links.ftl") then visits the page ("links.html").

 * </p>

 * 

 * <p>

 * See <a href="https://code.google.com/p/b3log-solo/issues/detail?id=409">issue 409</a> for more details.

 * </p>

 *

 * @author <a href="mailto:DL88250@gmail.com">Liang Ding</a>

 * @version 1.0.0.2, May 28, 2012

 * @since 0.4.5

 */

@RequestProcessor

public final class UserTemplateProcessor {



    /**

     * Logger.

     */

    private static final Logger LOGGER = Logger.getLogger(ArticleProcessor.class.getName());

    /**

     * Filler.

     */

    private Filler filler = Filler.getInstance();

    /**

     * Preference query service.

     */

    private PreferenceQueryService preferenceQueryService = PreferenceQueryService.getInstance();

    /**

     * Language service.

     */

    private LangPropsService langPropsService = LangPropsService.getInstance();



    /**

     * Shows the user template page.

     * 

     * @param context the specified context

     * @param request the specified HTTP servlet request

     * @param response the specified HTTP servlet response

     * @throws IOException io exception 

     */

    @RequestProcessing(value = "/*.html", method = HTTPRequestMethod.GET)

    public void showPage(final HTTPRequestContext context, final HttpServletRequest request, final HttpServletResponse response)

            throws IOException {

        final String requestURI = request.getRequestURI();

        String templateName = StringUtils.substringAfterLast(requestURI, "/");

        templateName = StringUtils.substringBefore(templateName, ".") + ".ftl";

        LOGGER.log(Level.FINE, "Shows page[requestURI={0}, templateName={1}]", new Object[]{requestURI, templateName});



        final AbstractFreeMarkerRenderer renderer = new FrontRenderer();

        context.setRenderer(renderer);

        renderer.setTemplateName(templateName);



        final Map<String, Object> dataModel = renderer.getDataModel();



        final Template template = Templates.getTemplate((String) request.getAttribute(Keys.TEMAPLTE_DIR_NAME), templateName);

        if (null == template) {

            try {

                response.sendError(HttpServletResponse.SC_NOT_FOUND);

                

                return;

            } catch (final IOException ex) {

                LOGGER.severe(ex.getMessage());

            }

        }



        try {

            final Map<String, String> langs = langPropsService.getAll(Locales.getLocale(request));

            dataModel.putAll(langs);

            final JSONObject preference = preferenceQueryService.getPreference();



            filler.fillBlogHeader(request, dataModel, preference);

            filler.fillUserTemplate(template, dataModel, preference);

            filler.fillBlogFooter(dataModel, preference);

            Skins.fillSkinLangs(preference.optString(Preference.LOCALE_STRING),

                                (String) request.getAttribute(Keys.TEMAPLTE_DIR_NAME), dataModel);



            request.setAttribute(AbstractCacheablePageAction.CACHED_OID, "No id");

            request.setAttribute(AbstractCacheablePageAction.CACHED_TITLE, requestURI);

            request.setAttribute(AbstractCacheablePageAction.CACHED_TYPE, langs.get(PageTypes.USER_TEMPLATE_PAGE));

            request.setAttribute(AbstractCacheablePageAction.CACHED_LINK, requestURI);

        } catch (final Exception e) {

            LOGGER.log(Level.SEVERE, e.getMessage(), e);



            try {

                response.sendError(HttpServletResponse.SC_NOT_FOUND);

            } catch (final IOException ex) {

                LOGGER.severe(ex.getMessage());

            }

        }

    }

}