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

   1 /*
   2  * Sone - GetStatusAjaxPage.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 java.text.DateFormat;
  21 import java.text.SimpleDateFormat;
  22 import java.util.Collection;
  23 import java.util.Collections;
  24 import java.util.Date;
  25 import java.util.HashSet;
  26 import java.util.List;
  27 import java.util.Set;
  28
  29 import net.pterodactylus.sone.data.Post;
  30 import net.pterodactylus.sone.data.PostReply;
  31 import net.pterodactylus.sone.data.Sone;
  32 import net.pterodactylus.sone.notify.ListNotificationFilters;
  33 import net.pterodactylus.sone.template.SoneAccessor;
  34 import net.pterodactylus.sone.web.WebInterface;
  35 import net.pterodactylus.sone.web.page.FreenetRequest;
  36 import net.pterodactylus.util.json.JsonArray;
  37 import net.pterodactylus.util.json.JsonObject;
  38 import net.pterodactylus.util.notify.Notification;
  39
  40 import com.google.common.base.Predicate;
  41 import com.google.common.collect.Collections2;
  42
  43 /**
  44  * The “get status” AJAX handler returns all information that is necessary to
  45  * update the web interface in real-time.
  46  *
  47  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  48  */
  49 public class GetStatusAjaxPage extends JsonPage {
  50
  51         /** Date formatter. */
  52         private static final DateFormat dateFormat = new SimpleDateFormat("MMM d, yyyy, HH:mm:ss");
  53
  54         /**
  55          * Creates a new “get status” AJAX handler.
  56          *
  57          * @param webInterface
  58          *            The Sone web interface
  59          */
  60         public GetStatusAjaxPage(WebInterface webInterface) {
  61                 super("getStatus.ajax", webInterface);
  62         }
  63
  64         /**
  65          * {@inheritDoc}
  66          */
  67         @Override
  68         protected JsonObject createJsonObject(FreenetRequest request) {
  69                 final Sone currentSone = getCurrentSone(request.getToadletContext(), false);
  70                 /* load Sones. always return the status of the current Sone. */
  71                 Set<Sone> sones = new HashSet<Sone>(Collections.singleton(getCurrentSone(request.getToadletContext(), false)));
  72                 String loadSoneIds = request.getHttpRequest().getParam("soneIds");
  73                 if (loadSoneIds.length() > 0) {
  74                         String[] soneIds = loadSoneIds.split(",");
  75                         for (String soneId : soneIds) {
  76                                 /* just add it, we skip null further down. */
  77                                 sones.add(webInterface.getCore().getSone(soneId));
  78                         }
  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(webInterface.getNotifications().getNotifications(), currentSone);
  90                 Collections.sort(notifications, Notification.CREATED_TIME_SORTER);
  91                 /* load new posts. */
  92                 Collection<Post> newPosts = webInterface.getNewPosts();
  93                 if (currentSone != null) {
  94                         newPosts = Collections2.filter(newPosts, new Predicate<Post>() {
  95
  96                                 @Override
  97                                 public boolean apply(Post post) {
  98                                         return ListNotificationFilters.isPostVisible(currentSone, post);
  99                                 }
 100
 101                         });
 102                 }
 103                 JsonArray jsonPosts = new JsonArray();
 104                 for (Post post : newPosts) {
 105                         JsonObject jsonPost = new JsonObject();
 106                         jsonPost.put("id", post.getId());
 107                         jsonPost.put("sone", post.getSone().getId());
 108                         jsonPost.put("recipient", (post.getRecipient() != null) ? post.getRecipient().getId() : null);
 109                         jsonPost.put("time", post.getTime());
 110                         jsonPosts.add(jsonPost);
 111                 }
 112                 /* load new replies. */
 113                 Collection<PostReply> newReplies = webInterface.getNewReplies();
 114                 if (currentSone != null) {
 115                         newReplies = Collections2.filter(newReplies, new Predicate<PostReply>() {
 116
 117                                 @Override
 118                                 public boolean apply(PostReply reply) {
 119                                         return ListNotificationFilters.isReplyVisible(currentSone, reply);
 120                                 }
 121
 122                         });
 123                 }
 124                 /* remove replies to unknown posts. */
 125                 newReplies = Collections2.filter(newReplies, new Predicate<PostReply>() {
 126
 127                         @Override
 128                         public boolean apply(PostReply reply) {
 129                                 return (reply.getPost() != null) && (reply.getPost().getSone() != null);
 130                         }
 131                 });
 132                 JsonArray jsonReplies = new JsonArray();
 133                 for (PostReply reply : newReplies) {
 134                         JsonObject jsonReply = new JsonObject();
 135                         jsonReply.put("id", reply.getId());
 136                         jsonReply.put("sone", reply.getSone().getId());
 137                         jsonReply.put("post", reply.getPost().getId());
 138                         jsonReply.put("postSone", reply.getPost().getSone().getId());
 139                         jsonReplies.add(jsonReply);
 140                 }
 141                 return createSuccessJsonObject().put("loggedIn", currentSone != null).put("options", createJsonOptions(currentSone)).put("sones", jsonSones).put("notificationHash", notifications.hashCode()).put("newPosts", jsonPosts).put("newReplies", jsonReplies);
 142         }
 143
 144         /**
 145          * {@inheritDoc}
 146          */
 147         @Override
 148         protected boolean needsFormPassword() {
 149                 return false;
 150         }
 151
 152         /**
 153          * {@inheritDoc}
 154          */
 155         @Override
 156         protected boolean requiresLogin() {
 157                 return false;
 158         }
 159
 160         //
 161         // PRIVATE METHODS
 162         //
 163
 164         /**
 165          * Creates a JSON object from the given Sone.
 166          *
 167          * @param sone
 168          *            The Sone to convert to a JSON object
 169          * @return The JSON representation of the given Sone
 170          */
 171         private JsonObject createJsonSone(Sone sone) {
 172                 JsonObject jsonSone = new JsonObject();
 173                 jsonSone.put("id", sone.getId());
 174                 jsonSone.put("name", SoneAccessor.getNiceName(sone));
 175                 jsonSone.put("local", sone.getInsertUri() != null);
 176                 jsonSone.put("status", sone.getStatus().name());
 177                 jsonSone.put("modified", webInterface.getCore().isModifiedSone(sone));
 178                 jsonSone.put("locked", webInterface.getCore().isLocked(sone));
 179                 jsonSone.put("lastUpdatedUnknown", sone.getTime() == 0);
 180                 synchronized (dateFormat) {
 181                         jsonSone.put("lastUpdated", dateFormat.format(new Date(sone.getTime())));
 182                 }
 183                 jsonSone.put("lastUpdatedText", GetTimesAjaxPage.getTime(webInterface, sone.getTime()).getText());
 184                 return jsonSone;
 185         }
 186
 187         /**
 188          * Creates a JSON object that contains all options that are currently in
 189          * effect for the given Sone (or overall, if the given Sone is {@code null}
 190          * ).
 191          *
 192          * @param currentSone
 193          *            The current Sone (may be {@code null})
 194          * @return The current options
 195          */
 196         private static JsonObject createJsonOptions(Sone currentSone) {
 197                 JsonObject options = new JsonObject();
 198                 if (currentSone != null) {
 199                         options.put("ShowNotification/NewSones", currentSone.getOptions().getBooleanOption("ShowNotification/NewSones").get());
 200                         options.put("ShowNotification/NewPosts", currentSone.getOptions().getBooleanOption("ShowNotification/NewPosts").get());
 201                         options.put("ShowNotification/NewReplies", currentSone.getOptions().getBooleanOption("ShowNotification/NewReplies").get());
 202                 }
 203                 return options;
 204         }
 205
 206 }