net.pterodactylus.sone.web.ajax.GetReplyAjaxPage.java Source code

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Here is the source code for net.pterodactylus.sone.web.ajax.GetReplyAjaxPage.java

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/*
 * Sone - GetReplyAjaxPage.java - Copyright  20102013 David Roden
 *
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.pterodactylus.sone.web.ajax;

import java.io.StringWriter;
import static com.fasterxml.jackson.databind.node.JsonNodeFactory.instance;

import com.google.common.base.Optional;

import net.pterodactylus.sone.data.PostReply;
import net.pterodactylus.sone.data.Sone;
import net.pterodactylus.sone.web.WebInterface;
import net.pterodactylus.sone.web.page.FreenetRequest;
import net.pterodactylus.util.io.Closer;
import net.pterodactylus.util.template.Template;
import net.pterodactylus.util.template.TemplateContext;
import net.pterodactylus.util.template.TemplateException;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.ObjectNode;

/**
 * This AJAX page returns the details of a reply.
 *
 * @author <a href="mailto:bombe@pterodactylus.net">David Bombe Roden</a>
 */
public class GetReplyAjaxPage extends JsonPage {

    /** The template to render. */
    private final Template replyTemplate;

    /**
     * Creates a new get reply? page.
     *
     * @param webInterface
     *            The Sone web interface
     * @param replyTemplate
     *            The template to render
     */
    public GetReplyAjaxPage(WebInterface webInterface, Template replyTemplate) {
        super("getReply.ajax", webInterface);
        this.replyTemplate = replyTemplate;
    }

    //
    // JSONPAGE METHODS
    //

    /**
     * {@inheritDoc}
     */
    @Override
    protected JsonReturnObject createJsonObject(FreenetRequest request) {
        String replyId = request.getHttpRequest().getParam("reply");
        Optional<PostReply> reply = webInterface.getCore().getPostReply(replyId);
        if (!reply.isPresent()) {
            return createErrorJsonObject("invalid-reply-id");
        }
        return createSuccessJsonObject().put("reply",
                createJsonReply(request, reply.get(), getCurrentSone(request.getToadletContext())));
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected boolean needsFormPassword() {
        return false;
    }

    //
    // PRIVATE METHODS
    //

    /**
     * Creates a JSON representation of the given reply.
     *
     * @param request
     *            The request being processed
     * @param reply
     *            The reply to convert
     * @param currentSone
     *            The currently logged in Sone (to store in the template)
     * @return The JSON representation of the reply
     */
    private JsonNode createJsonReply(FreenetRequest request, PostReply reply, Sone currentSone) {
        ObjectNode jsonReply = new ObjectNode(instance);
        jsonReply.put("id", reply.getId());
        jsonReply.put("postId", reply.getPostId());
        jsonReply.put("soneId", reply.getSone().getId());
        jsonReply.put("time", reply.getTime());
        StringWriter stringWriter = new StringWriter();
        TemplateContext templateContext = webInterface.getTemplateContextFactory().createTemplateContext();
        templateContext.set("core", webInterface.getCore());
        templateContext.set("request", request);
        templateContext.set("reply", reply);
        templateContext.set("currentSone", currentSone);
        try {
            replyTemplate.render(templateContext, stringWriter);
        } catch (TemplateException te1) {
            /* TODO - shouldnt happen. */
        } finally {
            Closer.close(stringWriter);
        }
        return jsonReply.put("html", stringWriter.toString());
    }

}