GetStatusAjaxPage.java

   1 /*
   2  * Sone - GetStatusAjaxPage.java - Copyright © 2010–2012 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.text.DateFormat;
  21 import java.text.SimpleDateFormat;
  22 import java.util.Collections;
  23 import java.util.Date;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Set;
  27
  28 import net.pterodactylus.sone.data.Post;
  29 import net.pterodactylus.sone.data.PostReply;
  30 import net.pterodactylus.sone.data.Sone;
  31 import net.pterodactylus.sone.notify.ListNotificationFilters;
  32 import net.pterodactylus.sone.template.SoneAccessor;
  33 import net.pterodactylus.sone.web.WebInterface;
  34 import net.pterodactylus.sone.web.page.FreenetRequest;
  35 import net.pterodactylus.util.collection.filter.Filter;
  36 import net.pterodactylus.util.collection.filter.Filters;
  37 import net.pterodactylus.util.json.JsonArray;
  38 import net.pterodactylus.util.json.JsonObject;
  39 import net.pterodactylus.util.notify.Notification;
  40 import net.pterodactylus.util.object.HashCode;
  41
  42 /**
  43  * The “get status” AJAX handler returns all information that is necessary to
  44  * update the web interface in real-time.
  45  *
  46  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  47  */
  48 public class GetStatusAjaxPage extends JsonPage {
  49
  50         /** Date formatter. */
  51         private static final DateFormat dateFormat = new SimpleDateFormat("MMM d, yyyy, HH:mm:ss");
  52
  53         /**
  54          * Creates a new “get status” AJAX handler.
  55          *
  56          * @param webInterface
  57          *            The Sone web interface
  58          */
  59         public GetStatusAjaxPage(WebInterface webInterface) {
  60                 super("getStatus.ajax", webInterface);
  61         }
  62
  63         /**
  64          * {@inheritDoc}
  65          */
  66         @Override
  67         protected JsonObject createJsonObject(FreenetRequest request) {
  68                 final Sone currentSone = getCurrentSone(request.getToadletContext(), false);
  69                 /* load Sones. */
  70                 boolean loadAllSones = Boolean.parseBoolean(request.getHttpRequest().getParam("loadAllSones", "false"));
  71                 Set<Sone> sones = new HashSet<Sone>(Collections.singleton(getCurrentSone(request.getToadletContext(), false)));
  72                 if (loadAllSones) {
  73                         sones.addAll(webInterface.getCore().getSones());
  74                 } else {
  75                         String loadSoneIds = request.getHttpRequest().getParam("soneIds");
  76                         if (loadSoneIds.length() > 0) {
  77                                 String[] soneIds = loadSoneIds.split(",");
  78                                 for (String soneId : soneIds) {
  79                                         /* just add it, we skip null further down. */
  80                                         sones.add(webInterface.getCore().getSone(soneId, false));
  81                                 }
  82                         }
  83                 }
  84                 JsonArray jsonSones = new JsonArray();
  85                 for (Sone sone : sones) {
  86                         if (sone == null) {
  87                                 continue;
  88                         }
  89                         JsonObject jsonSone = createJsonSone(sone);
  90                         jsonSones.add(jsonSone);
  91                 }
  92                 /* load notifications. */
  93                 List<Notification> notifications = ListNotificationFilters.filterNotifications(webInterface.getNotifications().getNotifications(), currentSone);
  94                 Collections.sort(notifications, Notification.CREATED_TIME_SORTER);
  95                 int notificationHash = HashCode.hashCode(notifications);
  96                 /* load new posts. */
  97                 Set<Post> newPosts = webInterface.getNewPosts();
  98                 if (currentSone != null) {
  99                         newPosts = Filters.filteredSet(newPosts, new Filter<Post>() {
 100
 101                                 @Override
 102                                 public boolean filterObject(Post post) {
 103                                         return ListNotificationFilters.isPostVisible(currentSone, post);
 104                                 }
 105
 106                         });
 107                 }
 108                 JsonArray jsonPosts = new JsonArray();
 109                 for (Post post : newPosts) {
 110                         JsonObject jsonPost = new JsonObject();
 111                         jsonPost.put("id", post.getId());
 112                         jsonPost.put("sone", post.getSone().getId());
 113                         jsonPost.put("recipient", (post.getRecipient() != null) ? post.getRecipient().getId() : null);
 114                         jsonPost.put("time", post.getTime());
 115                         jsonPosts.add(jsonPost);
 116                 }
 117                 /* load new replies. */
 118                 Set<PostReply> newReplies = webInterface.getNewReplies();
 119                 if (currentSone != null) {
 120                         newReplies = Filters.filteredSet(newReplies, new Filter<PostReply>() {
 121
 122                                 @Override
 123                                 public boolean filterObject(PostReply reply) {
 124                                         return ListNotificationFilters.isReplyVisible(currentSone, reply);
 125                                 }
 126
 127                         });
 128                 }
 129                 /* remove replies to unknown posts. */
 130                 newReplies = Filters.filteredSet(newReplies, new Filter<PostReply>() {
 131
 132                         @Override
 133                         public boolean filterObject(PostReply reply) {
 134                                 return (reply.getPost() != null) && (reply.getPost().getSone() != null);
 135                         }
 136                 });
 137                 JsonArray jsonReplies = new JsonArray();
 138                 for (PostReply reply : newReplies) {
 139                         JsonObject jsonReply = new JsonObject();
 140                         jsonReply.put("id", reply.getId());
 141                         jsonReply.put("sone", reply.getSone().getId());
 142                         jsonReply.put("post", reply.getPost().getId());
 143                         jsonReply.put("postSone", reply.getPost().getSone().getId());
 144                         jsonReplies.add(jsonReply);
 145                 }
 146                 return createSuccessJsonObject().put("loggedIn", currentSone != null).put("options", createJsonOptions(currentSone)).put("sones", jsonSones).put("notificationHash", notificationHash).put("newPosts", jsonPosts).put("newReplies", jsonReplies);
 147         }
 148
 149         /**
 150          * {@inheritDoc}
 151          */
 152         @Override
 153         protected boolean needsFormPassword() {
 154                 return false;
 155         }
 156
 157         /**
 158          * {@inheritDoc}
 159          */
 160         @Override
 161         protected boolean requiresLogin() {
 162                 return false;
 163         }
 164
 165         //
 166         // PRIVATE METHODS
 167         //
 168
 169         /**
 170          * Creates a JSON object from the given Sone.
 171          *
 172          * @param sone
 173          *            The Sone to convert to a JSON object
 174          * @return The JSON representation of the given Sone
 175          */
 176         private JsonObject createJsonSone(Sone sone) {
 177                 JsonObject jsonSone = new JsonObject();
 178                 jsonSone.put("id", sone.getId());
 179                 jsonSone.put("name", SoneAccessor.getNiceName(sone));
 180                 jsonSone.put("local", sone.getInsertUri() != null);
 181                 jsonSone.put("status", sone.getStatus().name());
 182                 jsonSone.put("modified", webInterface.getCore().isModifiedSone(sone));
 183                 jsonSone.put("locked", webInterface.getCore().isLocked(sone));
 184                 jsonSone.put("lastUpdatedUnknown", sone.getTime() == 0);
 185                 synchronized (dateFormat) {
 186                         jsonSone.put("lastUpdated", dateFormat.format(new Date(sone.getTime())));
 187                 }
 188                 jsonSone.put("lastUpdatedText", GetTimesAjaxPage.getTime(webInterface, sone.getTime()).getText());
 189                 return jsonSone;
 190         }
 191
 192         /**
 193          * Creates a JSON object that contains all options that are currently in
 194          * effect for the given Sone (or overall, if the given Sone is {@code null}
 195          * ).
 196          *
 197          * @param currentSone
 198          *            The current Sone (may be {@code null})
 199          * @return The current options
 200          */
 201         private JsonObject createJsonOptions(Sone currentSone) {
 202                 JsonObject options = new JsonObject();
 203                 if (currentSone != null) {
 204                         options.put("ShowNotification/NewSones", currentSone.getOptions().getBooleanOption("ShowNotification/NewSones").get());
 205                         options.put("ShowNotification/NewPosts", currentSone.getOptions().getBooleanOption("ShowNotification/NewPosts").get());
 206                         options.put("ShowNotification/NewReplies", currentSone.getOptions().getBooleanOption("ShowNotification/NewReplies").get());
 207                 }
 208                 return options;
 209         }
 210
 211 }