src/main/java/net/pterodactylus/sone/web/ajax/GetReplyAjaxPage.java

   1 /*
   2  * Sone - GetReplyAjaxPage.java - Copyright © 2010–2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.web.ajax;
  19
  20 import static com.fasterxml.jackson.databind.node.JsonNodeFactory.instance;
  21
  22 import java.io.StringWriter;
  23
  24 import net.pterodactylus.sone.data.PostReply;
  25 import net.pterodactylus.sone.data.Sone;
  26 import net.pterodactylus.sone.web.WebInterface;
  27 import net.pterodactylus.sone.web.page.FreenetRequest;
  28 import net.pterodactylus.util.io.Closer;
  29 import net.pterodactylus.util.template.Template;
  30 import net.pterodactylus.util.template.TemplateContext;
  31 import net.pterodactylus.util.template.TemplateException;
  32
  33 import com.fasterxml.jackson.databind.JsonNode;
  34 import com.fasterxml.jackson.databind.node.ObjectNode;
  35 import com.google.common.base.Optional;
  36
  37 /**
  38  * This AJAX page returns the details of a reply.
  39  *
  40  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  41  */
  42 public class GetReplyAjaxPage extends JsonPage {
  43
  44         /** The template to render. */
  45         private final Template replyTemplate;
  46
  47         /**
  48          * Creates a new “get reply” page.
  49          *
  50          * @param webInterface
  51          *            The Sone web interface
  52          * @param replyTemplate
  53          *            The template to render
  54          */
  55         public GetReplyAjaxPage(WebInterface webInterface, Template replyTemplate) {
  56                 super("getReply.ajax", webInterface);
  57                 this.replyTemplate = replyTemplate;
  58         }
  59
  60         //
  61         // JSONPAGE METHODS
  62         //
  63
  64         @Override
  65         protected JsonReturnObject createJsonObject(FreenetRequest request) {
  66                 String replyId = request.getHttpRequest().getParam("reply");
  67                 Optional<PostReply> reply = webInterface.getCore().getPostReply(replyId);
  68                 if (!reply.isPresent()) {
  69                         return createErrorJsonObject("invalid-reply-id");
  70                 }
  71                 return createSuccessJsonObject().put("reply", createJsonReply(request, reply.get(), getCurrentSone(request.getToadletContext())));
  72         }
  73
  74         @Override
  75         protected boolean needsFormPassword() {
  76                 return false;
  77         }
  78
  79         //
  80         // PRIVATE METHODS
  81         //
  82
  83         /**
  84          * Creates a JSON representation of the given reply.
  85          *
  86          * @param request
  87          *            The request being processed
  88          * @param reply
  89          *            The reply to convert
  90          * @param currentSone
  91          *            The currently logged in Sone (to store in the template)
  92          * @return The JSON representation of the reply
  93          */
  94         private JsonNode createJsonReply(FreenetRequest request, PostReply reply, Sone currentSone) {
  95                 ObjectNode jsonReply = new ObjectNode(instance);
  96                 jsonReply.put("id", reply.getId());
  97                 jsonReply.put("postId", reply.getPostId());
  98                 jsonReply.put("soneId", reply.getSone().getId());
  99                 jsonReply.put("time", reply.getTime());
 100                 StringWriter stringWriter = new StringWriter();
 101                 TemplateContext templateContext = webInterface.getTemplateContextFactory().createTemplateContext();
 102                 templateContext.set("core", webInterface.getCore());
 103                 templateContext.set("request", request);
 104                 templateContext.set("reply", reply);
 105                 templateContext.set("currentSone", currentSone);
 106                 try {
 107                         replyTemplate.render(templateContext, stringWriter);
 108                 } catch (TemplateException te1) {
 109                         /* TODO - shouldn’t happen. */
 110                 } finally {
 111                         Closer.close(stringWriter);
 112                 }
 113                 return jsonReply.put("html", stringWriter.toString());
 114         }
 115
 116 }