src/main/java/net/pterodactylus/sone/notify/ListNotificationFilters.java

   1 /*
   2  * Sone - ListNotificationFilters.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.notify;
  19
  20 import java.util.ArrayList;
  21 import java.util.Collection;
  22 import java.util.List;
  23
  24 import net.pterodactylus.sone.data.Post;
  25 import net.pterodactylus.sone.data.Reply;
  26 import net.pterodactylus.sone.data.Sone;
  27 import net.pterodactylus.util.notify.Notification;
  28
  29 /**
  30  * Filter for {@link ListNotification}s.
  31  *
  32  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  33  */
  34 public class ListNotificationFilters {
  35
  36         /**
  37          * Filters new-post and new-reply notifications in the given list of
  38          * notifications. If {@code currentSone} is <code>null</code>, nothing is
  39          * filtered and the given list is returned.
  40          * If {@code currentSone} is not {@code null}, only posts that are posted by
  41          * a friend Sone or the Sone itself, and replies that are replies to posts
  42          * of friend Sones or the Sone itself will be retained
  43          * in the notifications.
  44          *
  45          * @param notifications
  46          *            The notifications to filter
  47          * @param currentSone
  48          *            The current Sone, or {@code null} if not logged in
  49          * @return The filtered notifications
  50          */
  51         public static List<Notification> filterNotifications(List<Notification> notifications, Sone currentSone) {
  52                 if (currentSone == null) {
  53                         return notifications;
  54                 }
  55                 ListNotification<Post> newPostNotification = getNotification(notifications, "new-post-notification", Post.class);
  56                 System.out.println("Found new-post-notification with " + ((newPostNotification != null) ? newPostNotification.getElements().size() : -1) + " posts.");
  57                 if (newPostNotification != null) {
  58                         List<Post> newPosts = new ArrayList<Post>();
  59                         for (Post post : newPostNotification.getElements()) {
  60                                 System.out.println("Checking Post: " + post);
  61                                 if (currentSone.hasFriend(post.getSone().getId()) || currentSone.equals(post.getSone())) {
  62                                         System.out.println("  CS.hF: " + currentSone.hasFriend(post.getSone().getId()));
  63                                         System.out.println("  CS.e:" + currentSone.equals(post.getSone()));
  64                                         newPosts.add(post);
  65                                 }
  66                         }
  67                         int notificationIndex = notifications.indexOf(newPostNotification);
  68                         if (newPosts.isEmpty()) {
  69                                 System.out.println("Removing notification.");
  70                                 notifications.remove(notificationIndex);
  71                         } else {
  72                                 System.out.println("Replacing Notification.");
  73                                 newPostNotification = new ListNotification<Post>(newPostNotification);
  74                                 newPostNotification.setElements(newPosts);
  75                                 notifications.set(notificationIndex, newPostNotification);
  76                         }
  77                 }
  78                 ListNotification<Reply> newReplyNotification = getNotification(notifications, "new-replies-notification", Reply.class);
  79                 System.out.println("Found new-reply-notification with " + ((newReplyNotification != null) ? newReplyNotification.getElements().size() : -1) + " replies.");
  80                 if (newReplyNotification != null) {
  81                         List<Reply> newReplies = new ArrayList<Reply>();
  82                         for (Reply reply : newReplyNotification.getElements()) {
  83                                 System.out.println("Checking Reply: " + reply);
  84                                 if (currentSone.hasFriend(reply.getPost().getSone().getId()) || currentSone.equals(reply.getPost().getSone())) {
  85                                         System.out.println("  CS.hF: " + currentSone.hasFriend(reply.getPost().getSone().getId()));
  86                                         System.out.println("  CS.e: " + currentSone.equals(reply.getPost().getSone()));
  87                                         newReplies.add(reply);
  88                                 }
  89                         }
  90                         int notificationIndex = notifications.indexOf(newReplyNotification);
  91                         if (newReplies.isEmpty()) {
  92                                 System.out.println("Removing Notification.");
  93                                 notifications.remove(notificationIndex);
  94                         } else {
  95                                 System.out.println("Replacing Notification.");
  96                                 newReplyNotification = new ListNotification<Reply>(newReplyNotification);
  97                                 newReplyNotification.setElements(newReplies);
  98                                 notifications.set(notificationIndex, newReplyNotification);
  99                         }
 100                 }
 101                 return notifications;
 102         }
 103
 104         /**
 105          * Finds the notification with the given ID in the list of notifications and
 106          * returns it.
 107          *
 108          * @param <T>
 109          *            The type of the item in the notification
 110          * @param notifications
 111          *            The notification to search
 112          * @param notificationId
 113          *            The ID of the requested notification
 114          * @param notificationElementClass
 115          *            The class of the notification item
 116          * @return The requested notification, or {@code null} if no notification
 117          *         with the given ID could be found
 118          */
 119         @SuppressWarnings("unchecked")
 120         private static <T> ListNotification<T> getNotification(Collection<? extends Notification> notifications, String notificationId, Class<T> notificationElementClass) {
 121                 for (Notification notification : notifications) {
 122                         if (!notificationId.equals(notification.getId())) {
 123                                 continue;
 124                         }
 125                         return (ListNotification<T>) notification;
 126                 }
 127                 return null;
 128         }
 129
 130 }