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 static com.fasterxml.jackson.databind.node.JsonNodeFactory.instance;
  21
  22 import java.text.DateFormat;
  23 import java.text.SimpleDateFormat;
  24 import java.util.Collection;
  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.PostReply;
  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.sone.web.page.FreenetRequest;
  38 import net.pterodactylus.util.notify.Notification;
  39
  40 import com.fasterxml.jackson.databind.JsonNode;
  41 import com.fasterxml.jackson.databind.node.ArrayNode;
  42 import com.fasterxml.jackson.databind.node.ObjectNode;
  43 import com.google.common.base.Predicate;
  44 import com.google.common.collect.Collections2;
  45
  46 /**
  47  * The “get status” AJAX handler returns all information that is necessary to
  48  * update the web interface in real-time.
  49  *
  50  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  51  */
  52 public class GetStatusAjaxPage extends JsonPage {
  53
  54         /** Date formatter. */
  55         private static final DateFormat dateFormat = new SimpleDateFormat("MMM d, yyyy, HH:mm:ss");
  56
  57         /**
  58          * Creates a new “get status” AJAX handler.
  59          *
  60          * @param webInterface
  61          *            The Sone web interface
  62          */
  63         public GetStatusAjaxPage(WebInterface webInterface) {
  64                 super("getStatus.ajax", webInterface);
  65         }
  66
  67         @Override
  68         protected JsonReturnObject 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).orNull());
  78                         }
  79                 }
  80                 ArrayNode jsonSones = new ArrayNode(instance);
  81                 for (Sone sone : sones) {
  82                         if (sone == null) {
  83                                 continue;
  84                         }
  85                         jsonSones.add(createJsonSone(sone));
  86                 }
  87                 /* load notifications. */
  88                 List<Notification> notifications = ListNotificationFilters.filterNotifications(webInterface.getNotifications().getNotifications(), currentSone);
  89                 Collections.sort(notifications, Notification.CREATED_TIME_SORTER);
  90                 /* load new posts. */
  91                 Collection<Post> newPosts = webInterface.getNewPosts();
  92                 if (currentSone != null) {
  93                         newPosts = Collections2.filter(newPosts, new Predicate<Post>() {
  94
  95                                 @Override
  96                                 public boolean apply(Post post) {
  97                                         return ListNotificationFilters.isPostVisible(currentSone, post);
  98                                 }
  99
 100                         });
 101                 }
 102                 ArrayNode jsonPosts = new ArrayNode(instance);
 103                 for (Post post : newPosts) {
 104                         ObjectNode jsonPost = new ObjectNode(instance);
 105                         jsonPost.put("id", post.getId());
 106                         jsonPost.put("sone", post.getSone().getId());
 107                         jsonPost.put("recipient", post.getRecipientId().orNull());
 108                         jsonPost.put("time", post.getTime());
 109                         jsonPosts.add(jsonPost);
 110                 }
 111                 /* load new replies. */
 112                 Collection<PostReply> newReplies = webInterface.getNewReplies();
 113                 if (currentSone != null) {
 114                         newReplies = Collections2.filter(newReplies, new Predicate<PostReply>() {
 115
 116                                 @Override
 117                                 public boolean apply(PostReply reply) {
 118                                         return ListNotificationFilters.isReplyVisible(currentSone, reply);
 119                                 }
 120
 121                         });
 122                 }
 123                 /* remove replies to unknown posts. */
 124                 newReplies = Collections2.filter(newReplies, PostReply.HAS_POST_FILTER);
 125                 ArrayNode jsonReplies = new ArrayNode(instance);
 126                 for (PostReply reply : newReplies) {
 127                         ObjectNode jsonReply = new ObjectNode(instance);
 128                         jsonReply.put("id", reply.getId());
 129                         jsonReply.put("sone", reply.getSone().getId());
 130                         jsonReply.put("post", reply.getPostId());
 131                         jsonReply.put("postSone", reply.getPost().get().getSone().getId());
 132                         jsonReplies.add(jsonReply);
 133                 }
 134                 return createSuccessJsonObject().put("loggedIn", currentSone != null).put("options", createJsonOptions(currentSone)).put("sones", jsonSones).put("notificationHash", notifications.hashCode()).put("newPosts", jsonPosts).put("newReplies", jsonReplies);
 135         }
 136
 137         @Override
 138         protected boolean needsFormPassword() {
 139                 return false;
 140         }
 141
 142         @Override
 143         protected boolean requiresLogin() {
 144                 return false;
 145         }
 146
 147         //
 148         // PRIVATE METHODS
 149         //
 150
 151         /**
 152          * Creates a JSON object from the given Sone.
 153          *
 154          * @param sone
 155          *            The Sone to convert to a JSON object
 156          * @return The JSON representation of the given Sone
 157          */
 158         private JsonNode createJsonSone(Sone sone) {
 159                 ObjectNode jsonSone = new ObjectNode(instance);
 160                 jsonSone.put("id", sone.getId());
 161                 jsonSone.put("name", SoneAccessor.getNiceName(sone));
 162                 jsonSone.put("local", sone.getInsertUri() != null);
 163                 jsonSone.put("status", sone.getStatus().name());
 164                 jsonSone.put("modified", webInterface.getCore().isModifiedSone(sone));
 165                 jsonSone.put("locked", webInterface.getCore().isLocked(sone));
 166                 jsonSone.put("lastUpdatedUnknown", sone.getTime() == 0);
 167                 synchronized (dateFormat) {
 168                         jsonSone.put("lastUpdated", dateFormat.format(new Date(sone.getTime())));
 169                 }
 170                 jsonSone.put("lastUpdatedText", GetTimesAjaxPage.getTime(webInterface, sone.getTime()).getText());
 171                 return jsonSone;
 172         }
 173
 174         /**
 175          * Creates a JSON object that contains all options that are currently in
 176          * effect for the given Sone (or overall, if the given Sone is {@code null}
 177          * ).
 178          *
 179          * @param currentSone
 180          *            The current Sone (may be {@code null})
 181          * @return The current options
 182          */
 183         private static JsonNode createJsonOptions(Sone currentSone) {
 184                 ObjectNode options = new ObjectNode(instance);
 185                 if (currentSone != null) {
 186                         options.put("ShowNotification/NewSones", currentSone.getOptions().getBooleanOption("ShowNotification/NewSones").get());
 187                         options.put("ShowNotification/NewPosts", currentSone.getOptions().getBooleanOption("ShowNotification/NewPosts").get());
 188                         options.put("ShowNotification/NewReplies", currentSone.getOptions().getBooleanOption("ShowNotification/NewReplies").get());
 189                 }
 190                 return options;
 191         }
 192
 193 }