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

   1 /*
   2  * Sone - GetStatusAjaxPage.java - Copyright © 2010 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 java.io.IOException;
  21 import java.io.StringWriter;
  22 import java.text.DateFormat;
  23 import java.text.SimpleDateFormat;
  24 import java.util.ArrayList;
  25 import java.util.Collections;
  26 import java.util.Date;
  27 import java.util.HashSet;
  28 import java.util.List;
  29 import java.util.Set;
  30
  31 import net.pterodactylus.sone.data.Post;
  32 import net.pterodactylus.sone.data.Reply;
  33 import net.pterodactylus.sone.data.Sone;
  34 import net.pterodactylus.sone.notify.ListNotificationFilters;
  35 import net.pterodactylus.sone.template.SoneAccessor;
  36 import net.pterodactylus.sone.web.WebInterface;
  37 import net.pterodactylus.util.filter.Filter;
  38 import net.pterodactylus.util.filter.Filters;
  39 import net.pterodactylus.util.json.JsonArray;
  40 import net.pterodactylus.util.json.JsonObject;
  41 import net.pterodactylus.util.notify.Notification;
  42 import net.pterodactylus.util.notify.TemplateNotification;
  43 import net.pterodactylus.util.template.TemplateContext;
  44
  45 /**
  46  * The “get status” AJAX handler returns all information that is necessary to
  47  * update the web interface in real-time.
  48  *
  49  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  50  */
  51 public class GetStatusAjaxPage extends JsonPage {
  52
  53         /** Date formatter. */
  54         private static final DateFormat dateFormat = new SimpleDateFormat("MMM d, yyyy, HH:mm:ss");
  55
  56         /**
  57          * Creates a new “get status” AJAX handler.
  58          *
  59          * @param webInterface
  60          *            The Sone web interface
  61          */
  62         public GetStatusAjaxPage(WebInterface webInterface) {
  63                 super("getStatus.ajax", webInterface);
  64         }
  65
  66         /**
  67          * {@inheritDoc}
  68          */
  69         @Override
  70         protected JsonObject createJsonObject(Request request) {
  71                 final Sone currentSone = getCurrentSone(request.getToadletContext(), false);
  72                 /* load Sones. */
  73                 boolean loadAllSones = Boolean.parseBoolean(request.getHttpRequest().getParam("loadAllSones", "true"));
  74                 Set<Sone> sones = new HashSet<Sone>(Collections.singleton(getCurrentSone(request.getToadletContext(), false)));
  75                 if (loadAllSones) {
  76                         sones.addAll(webInterface.getCore().getSones());
  77                 }
  78                 JsonArray jsonSones = new JsonArray();
  79                 for (Sone sone : sones) {
  80                         if (sone == null) {
  81                                 continue;
  82                         }
  83                         JsonObject jsonSone = createJsonSone(sone);
  84                         jsonSones.add(jsonSone);
  85                 }
  86                 /* load notifications. */
  87                 List<Notification> notifications = ListNotificationFilters.filterNotifications(new ArrayList<Notification>(webInterface.getNotifications().getNotifications()), currentSone);
  88                 Collections.sort(notifications, Notification.LAST_UPDATED_TIME_SORTER);
  89                 JsonArray jsonNotifications = new JsonArray();
  90                 for (Notification notification : notifications) {
  91                         jsonNotifications.add(createJsonNotification(notification));
  92                 }
  93                 /* load new posts. */
  94                 Set<Post> newPosts = webInterface.getNewPosts();
  95                 if (currentSone != null) {
  96                         newPosts = Filters.filteredSet(newPosts, new Filter<Post>() {
  97
  98                                 @Override
  99                                 public boolean filterObject(Post post) {
 100                                         return currentSone.hasFriend(post.getSone().getId()) || currentSone.equals(post.getSone()) || currentSone.equals(post.getRecipient());
 101                                 }
 102
 103                         });
 104                 }
 105                 JsonArray jsonPosts = new JsonArray();
 106                 for (Post post : newPosts) {
 107                         JsonObject jsonPost = new JsonObject();
 108                         jsonPost.put("id", post.getId());
 109                         jsonPost.put("sone", post.getSone().getId());
 110                         jsonPost.put("recipient", (post.getRecipient() != null) ? post.getRecipient().getId() : null);
 111                         jsonPost.put("time", post.getTime());
 112                         jsonPosts.add(jsonPost);
 113                 }
 114                 /* load new replies. */
 115                 Set<Reply> newReplies = webInterface.getNewReplies();
 116                 if (currentSone != null) {
 117                         newReplies = Filters.filteredSet(newReplies, new Filter<Reply>() {
 118
 119                                 @Override
 120                                 public boolean filterObject(Reply reply) {
 121                                         return currentSone.hasFriend(reply.getPost().getSone().getId()) || currentSone.equals(reply.getPost().getSone()) || currentSone.equals(reply.getPost().getRecipient());
 122                                 }
 123
 124                         });
 125                 }
 126                 JsonArray jsonReplies = new JsonArray();
 127                 for (Reply reply : newReplies) {
 128                         JsonObject jsonReply = new JsonObject();
 129                         jsonReply.put("id", reply.getId());
 130                         jsonReply.put("sone", reply.getSone().getId());
 131                         jsonReply.put("post", reply.getPost().getId());
 132                         jsonReply.put("postSone", reply.getPost().getSone().getId());
 133                         jsonReplies.add(jsonReply);
 134                 }
 135                 return createSuccessJsonObject().put("sones", jsonSones).put("notifications", jsonNotifications).put("newPosts", jsonPosts).put("newReplies", jsonReplies);
 136         }
 137
 138         /**
 139          * {@inheritDoc}
 140          */
 141         @Override
 142         protected boolean needsFormPassword() {
 143                 return false;
 144         }
 145
 146         /**
 147          * {@inheritDoc}
 148          */
 149         @Override
 150         protected boolean requiresLogin() {
 151                 return false;
 152         }
 153
 154         //
 155         // PRIVATE METHODS
 156         //
 157
 158         /**
 159          * Creates a JSON object from the given Sone.
 160          *
 161          * @param sone
 162          *            The Sone to convert to a JSON object
 163          * @return The JSON representation of the given Sone
 164          */
 165         private JsonObject createJsonSone(Sone sone) {
 166                 JsonObject jsonSone = new JsonObject();
 167                 jsonSone.put("id", sone.getId());
 168                 jsonSone.put("name", SoneAccessor.getNiceName(sone));
 169                 jsonSone.put("local", sone.getInsertUri() != null);
 170                 jsonSone.put("status", webInterface.getCore().getSoneStatus(sone).name());
 171                 jsonSone.put("modified", webInterface.getCore().isModifiedSone(sone));
 172                 jsonSone.put("locked", webInterface.getCore().isLocked(sone));
 173                 jsonSone.put("lastUpdatedUnknown", sone.getTime() == 0);
 174                 synchronized (dateFormat) {
 175                         jsonSone.put("lastUpdated", dateFormat.format(new Date(sone.getTime())));
 176                 }
 177                 jsonSone.put("age", (System.currentTimeMillis() - sone.getTime()) / 1000);
 178                 return jsonSone;
 179         }
 180
 181         /**
 182          * Creates a JSON object from the given notification.
 183          *
 184          * @param notification
 185          *            The notification to create a JSON object
 186          * @return The JSON object
 187          */
 188         private JsonObject createJsonNotification(Notification notification) {
 189                 JsonObject jsonNotification = new JsonObject();
 190                 jsonNotification.put("id", notification.getId());
 191                 StringWriter notificationWriter = new StringWriter();
 192                 try {
 193                         if (notification instanceof TemplateNotification) {
 194                                 TemplateContext templateContext = webInterface.getTemplateContextFactory().createTemplateContext().mergeContext(((TemplateNotification) notification).getTemplateContext());
 195                                 templateContext.set("notification", notification);
 196                                 ((TemplateNotification) notification).render(templateContext, notificationWriter);
 197                         } else {
 198                                 notification.render(notificationWriter);
 199                         }
 200                 } catch (IOException ioe1) {
 201                         /* StringWriter never throws, ignore. */
 202                 }
 203                 jsonNotification.put("text", notificationWriter.toString());
 204                 jsonNotification.put("createdTime", notification.getCreatedTime());
 205                 jsonNotification.put("lastUpdatedTime", notification.getLastUpdatedTime());
 206                 jsonNotification.put("dismissable", notification.isDismissable());
 207                 return jsonNotification;
 208         }
 209
 210 }