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.Collection;
  26 import java.util.Collections;
  27 import java.util.Date;
  28 import java.util.HashSet;
  29 import java.util.List;
  30 import java.util.Set;
  31
  32 import net.pterodactylus.sone.data.Post;
  33 import net.pterodactylus.sone.data.Reply;
  34 import net.pterodactylus.sone.data.Sone;
  35 import net.pterodactylus.sone.notify.ListNotification;
  36 import net.pterodactylus.sone.notify.ListNotificationFilters;
  37 import net.pterodactylus.sone.template.SoneAccessor;
  38 import net.pterodactylus.sone.web.WebInterface;
  39 import net.pterodactylus.util.filter.Filter;
  40 import net.pterodactylus.util.filter.Filters;
  41 import net.pterodactylus.util.json.JsonArray;
  42 import net.pterodactylus.util.json.JsonObject;
  43 import net.pterodactylus.util.notify.Notification;
  44 import net.pterodactylus.util.notify.TemplateNotification;
  45 import net.pterodactylus.util.template.TemplateContext;
  46
  47 /**
  48  * The “get status” AJAX handler returns all information that is necessary to
  49  * update the web interface in real-time.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class GetStatusAjaxPage extends JsonPage {
  54
  55         /** Date formatter. */
  56         private static final DateFormat dateFormat = new SimpleDateFormat("MMM d, yyyy, HH:mm:ss");
  57
  58         /**
  59          * Creates a new “get status” AJAX handler.
  60          *
  61          * @param webInterface
  62          *            The Sone web interface
  63          */
  64         public GetStatusAjaxPage(WebInterface webInterface) {
  65                 super("getStatus.ajax", webInterface);
  66         }
  67
  68         /**
  69          * {@inheritDoc}
  70          */
  71         @Override
  72         protected JsonObject createJsonObject(Request request) {
  73                 final Sone currentSone = getCurrentSone(request.getToadletContext(), false);
  74                 /* load Sones. */
  75                 boolean loadAllSones = Boolean.parseBoolean(request.getHttpRequest().getParam("loadAllSones", "true"));
  76                 Set<Sone> sones = new HashSet<Sone>(Collections.singleton(getCurrentSone(request.getToadletContext(), false)));
  77                 if (loadAllSones) {
  78                         sones.addAll(webInterface.getCore().getSones());
  79                 }
  80                 JsonArray jsonSones = new JsonArray();
  81                 for (Sone sone : sones) {
  82                         if (sone == null) {
  83                                 continue;
  84                         }
  85                         JsonObject jsonSone = createJsonSone(sone);
  86                         jsonSones.add(jsonSone);
  87                 }
  88                 /* load notifications. */
  89                 List<Notification> notifications = ListNotificationFilters.filterNotifications(new ArrayList<Notification>(webInterface.getNotifications().getNotifications()), currentSone);
  90                 Collections.sort(notifications, Notification.LAST_UPDATED_TIME_SORTER);
  91                 JsonArray jsonNotifications = new JsonArray();
  92                 for (Notification notification : notifications) {
  93                         jsonNotifications.add(createJsonNotification(notification));
  94                 }
  95                 /* load new posts. */
  96                 Set<Post> newPosts = webInterface.getNewPosts();
  97                 if (currentSone != null) {
  98                         newPosts = Filters.filteredSet(newPosts, new Filter<Post>() {
  99
 100                                 @Override
 101                                 public boolean filterObject(Post post) {
 102                                         return currentSone.hasFriend(post.getSone().getId()) || currentSone.equals(post.getSone());
 103                                 }
 104
 105                         });
 106                 }
 107                 JsonArray jsonPosts = new JsonArray();
 108                 for (Post post : newPosts) {
 109                         JsonObject jsonPost = new JsonObject();
 110                         jsonPost.put("id", post.getId());
 111                         jsonPost.put("sone", post.getSone().getId());
 112                         jsonPost.put("recipient", (post.getRecipient() != null) ? post.getRecipient().getId() : null);
 113                         jsonPost.put("time", post.getTime());
 114                         jsonPosts.add(jsonPost);
 115                 }
 116                 /* load new replies. */
 117                 Set<Reply> newReplies = webInterface.getNewReplies();
 118                 if (currentSone != null) {
 119                         newReplies = Filters.filteredSet(newReplies, new Filter<Reply>() {
 120
 121                                 @Override
 122                                 public boolean filterObject(Reply reply) {
 123                                         return currentSone.hasFriend(reply.getPost().getSone().getId()) || currentSone.equals(reply.getPost().getSone());
 124                                 }
 125
 126                         });
 127                 }
 128                 JsonArray jsonReplies = new JsonArray();
 129                 for (Reply reply : newReplies) {
 130                         JsonObject jsonReply = new JsonObject();
 131                         jsonReply.put("id", reply.getId());
 132                         jsonReply.put("sone", reply.getSone().getId());
 133                         jsonReply.put("post", reply.getPost().getId());
 134                         jsonReply.put("postSone", reply.getPost().getSone().getId());
 135                         jsonReplies.add(jsonReply);
 136                 }
 137                 return createSuccessJsonObject().put("sones", jsonSones).put("notifications", jsonNotifications).put("newPosts", jsonPosts).put("newReplies", jsonReplies);
 138         }
 139
 140         /**
 141          * {@inheritDoc}
 142          */
 143         @Override
 144         protected boolean needsFormPassword() {
 145                 return false;
 146         }
 147
 148         /**
 149          * {@inheritDoc}
 150          */
 151         @Override
 152         protected boolean requiresLogin() {
 153                 return false;
 154         }
 155
 156         //
 157         // PRIVATE METHODS
 158         //
 159
 160         /**
 161          * Creates a JSON object from the given Sone.
 162          *
 163          * @param sone
 164          *            The Sone to convert to a JSON object
 165          * @return The JSON representation of the given Sone
 166          */
 167         private JsonObject createJsonSone(Sone sone) {
 168                 JsonObject jsonSone = new JsonObject();
 169                 jsonSone.put("id", sone.getId());
 170                 jsonSone.put("name", SoneAccessor.getNiceName(sone));
 171                 jsonSone.put("local", sone.getInsertUri() != null);
 172                 jsonSone.put("status", webInterface.getCore().getSoneStatus(sone).name());
 173                 jsonSone.put("modified", webInterface.getCore().isModifiedSone(sone));
 174                 jsonSone.put("locked", webInterface.getCore().isLocked(sone));
 175                 jsonSone.put("lastUpdatedUnknown", sone.getTime() == 0);
 176                 synchronized (dateFormat) {
 177                         jsonSone.put("lastUpdated", dateFormat.format(new Date(sone.getTime())));
 178                 }
 179                 jsonSone.put("age", (System.currentTimeMillis() - sone.getTime()) / 1000);
 180                 return jsonSone;
 181         }
 182
 183         /**
 184          * Creates a JSON object from the given notification.
 185          *
 186          * @param notification
 187          *            The notification to create a JSON object
 188          * @return The JSON object
 189          */
 190         private JsonObject createJsonNotification(Notification notification) {
 191                 JsonObject jsonNotification = new JsonObject();
 192                 jsonNotification.put("id", notification.getId());
 193                 StringWriter notificationWriter = new StringWriter();
 194                 try {
 195                         if (notification instanceof TemplateNotification) {
 196                                 TemplateContext templateContext = webInterface.getTemplateContextFactory().createTemplateContext().mergeContext(((TemplateNotification) notification).getTemplateContext());
 197                                 templateContext.set("notification", notification);
 198                                 ((TemplateNotification) notification).render(templateContext, notificationWriter);
 199                         } else {
 200                                 notification.render(notificationWriter);
 201                         }
 202                 } catch (IOException ioe1) {
 203                         /* StringWriter never throws, ignore. */
 204                 }
 205                 jsonNotification.put("text", notificationWriter.toString());
 206                 jsonNotification.put("createdTime", notification.getCreatedTime());
 207                 jsonNotification.put("lastUpdatedTime", notification.getLastUpdatedTime());
 208                 jsonNotification.put("dismissable", notification.isDismissable());
 209                 return jsonNotification;
 210         }
 211
 212 }