Link to correct methods in documentation.
[Sone.git] / src / main / java / net / pterodactylus / sone / core / Core.java
index e67bf68..565aec4 100644 (file)
@@ -38,11 +38,14 @@ import net.pterodactylus.sone.data.Album;
 import net.pterodactylus.sone.data.Client;
 import net.pterodactylus.sone.data.Image;
 import net.pterodactylus.sone.data.Post;
+import net.pterodactylus.sone.data.PostReply;
 import net.pterodactylus.sone.data.Profile;
 import net.pterodactylus.sone.data.Reply;
 import net.pterodactylus.sone.data.Sone;
 import net.pterodactylus.sone.data.TemporaryImage;
 import net.pterodactylus.sone.data.Profile.Field;
+import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
+import net.pterodactylus.sone.data.Sone.SoneStatus;
 import net.pterodactylus.sone.fcp.FcpInterface;
 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
 import net.pterodactylus.sone.freenet.wot.Identity;
@@ -72,26 +75,6 @@ import freenet.keys.FreenetURI;
  */
 public class Core extends AbstractService implements IdentityListener, UpdateListener, SoneProvider, PostProvider, SoneInsertListener, ImageInsertListener {
 
-       /**
-        * Enumeration for the possible states of a {@link Sone}.
-        *
-        * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
-        */
-       public enum SoneStatus {
-
-               /** The Sone is unknown, i.e. not yet downloaded. */
-               unknown,
-
-               /** The Sone is idle, i.e. not being downloaded or inserted. */
-               idle,
-
-               /** The Sone is currently being inserted. */
-               inserting,
-
-               /** The Sone is currently being downloaded. */
-               downloading,
-       }
-
        /** The logger. */
        private static final Logger logger = Logging.getLogger(Core.class);
 
@@ -131,9 +114,8 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        /** The FCP interface. */
        private volatile FcpInterface fcpInterface;
 
-       /** The Sones’ statuses. */
-       /* synchronize access on itself. */
-       private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
+       /** The times Sones were followed. */
+       private final Map<Sone, Long> soneFollowingTimes = new HashMap<Sone, Long>();
 
        /** Locked local Sones. */
        /* synchronize on itself. */
@@ -155,28 +137,17 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        /* synchronize access on this on itself. */
        private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 
-       /** All new Sones. */
-       private Set<String> newSones = new HashSet<String>();
-
        /** All known Sones. */
-       /* synchronize access on {@link #newSones}. */
        private Set<String> knownSones = new HashSet<String>();
 
        /** All posts. */
        private Map<String, Post> posts = new HashMap<String, Post>();
 
-       /** All new posts. */
-       private Set<String> newPosts = new HashSet<String>();
-
        /** All known posts. */
-       /* synchronize access on {@link #newPosts}. */
        private Set<String> knownPosts = new HashSet<String>();
 
        /** All replies. */
-       private Map<String, Reply> replies = new HashMap<String, Reply>();
-
-       /** All new replies. */
-       private Set<String> newReplies = new HashSet<String>();
+       private Map<String, PostReply> replies = new HashMap<String, PostReply>();
 
        /** All known replies. */
        private Set<String> knownReplies = new HashSet<String>();
@@ -301,33 +272,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Returns the status of the given Sone.
-        *
-        * @param sone
-        *            The Sone to get the status for
-        * @return The status of the Sone
-        */
-       public SoneStatus getSoneStatus(Sone sone) {
-               synchronized (soneStatuses) {
-                       return soneStatuses.get(sone);
-               }
-       }
-
-       /**
-        * Sets the status of the given Sone.
-        *
-        * @param sone
-        *            The Sone to set the status of
-        * @param soneStatus
-        *            The status to set
-        */
-       public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
-               synchronized (soneStatuses) {
-                       soneStatuses.put(sone, soneStatus);
-               }
-       }
-
-       /**
         * Returns the Sone rescuer for the given local Sone.
         *
         * @param sone
@@ -483,7 +427,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        if ((sone == null) && create) {
                                sone = new Sone(id);
                                localSones.put(id, sone);
-                               setSoneStatus(sone, SoneStatus.unknown);
                        }
                        return sone;
                }
@@ -505,17 +448,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *
         * @param id
         *            The ID of the remote Sone to get
-        * @return The Sone with the given ID
-        */
-       public Sone getRemoteSone(String id) {
-               return getRemoteSone(id, true);
-       }
-
-       /**
-        * Returns the remote Sone with the given ID.
-        *
-        * @param id
-        *            The ID of the remote Sone to get
         * @param create
         *            {@code true} to always create a Sone, {@code false} to return
         *            {@code null} if no Sone with the given ID exists
@@ -524,10 +456,9 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        public Sone getRemoteSone(String id, boolean create) {
                synchronized (remoteSones) {
                        Sone sone = remoteSones.get(id);
-                       if ((sone == null) && create) {
+                       if ((sone == null) && create && (id != null) && (id.length() == 43)) {
                                sone = new Sone(id);
                                remoteSones.put(id, sone);
-                               setSoneStatus(sone, SoneStatus.unknown);
                        }
                        return sone;
                }
@@ -562,19 +493,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Returns whether the Sone with the given ID is a new Sone.
-        *
-        * @param soneId
-        *            The ID of the sone to check for
-        * @return {@code true} if the given Sone is new, false otherwise
-        */
-       public boolean isNewSone(String soneId) {
-               synchronized (newSones) {
-                       return !knownSones.contains(soneId) && newSones.contains(soneId);
-               }
-       }
-
-       /**
         * Returns whether the given Sone has been modified.
         *
         * @param sone
@@ -587,6 +505,23 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
+        * Returns the time when the given was first followed by any local Sone.
+        *
+        * @param sone
+        *            The Sone to get the time for
+        * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
+        *         been followed, or {@link Long#MAX_VALUE}
+        */
+       public long getSoneFollowingTime(Sone sone) {
+               synchronized (soneFollowingTimes) {
+                       if (soneFollowingTimes.containsKey(sone)) {
+                               return soneFollowingTimes.get(sone);
+                       }
+                       return Long.MAX_VALUE;
+               }
+       }
+
+       /**
         * Returns whether the target Sone is trusted by the origin Sone.
         *
         * @param origin
@@ -634,20 +569,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Returns whether the given post ID is new.
-        *
-        * @param postId
-        *            The post ID
-        * @return {@code true} if the post is considered to be new, {@code false}
-        *         otherwise
-        */
-       public boolean isNewPost(String postId) {
-               synchronized (newPosts) {
-                       return !knownPosts.contains(postId) && newPosts.contains(postId);
-               }
-       }
-
-       /**
         * Returns all posts that have the given Sone as recipient.
         *
         * @see Post#getRecipient()
@@ -676,7 +597,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            The ID of the reply to get
         * @return The reply
         */
-       public Reply getReply(String replyId) {
+       public PostReply getReply(String replyId) {
                return getReply(replyId, true);
        }
 
@@ -692,11 +613,11 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            to return {@code null} if no reply can be found
         * @return The reply, or {@code null} if there is no such reply
         */
-       public Reply getReply(String replyId, boolean create) {
+       public PostReply getReply(String replyId, boolean create) {
                synchronized (replies) {
-                       Reply reply = replies.get(replyId);
+                       PostReply reply = replies.get(replyId);
                        if (create && (reply == null)) {
-                               reply = new Reply(replyId);
+                               reply = new PostReply(replyId);
                                replies.put(replyId, reply);
                        }
                        return reply;
@@ -710,12 +631,11 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            The post to get all replies for
         * @return All replies for the given post
         */
-       public List<Reply> getReplies(Post post) {
+       public List<PostReply> getReplies(Post post) {
                Set<Sone> sones = getSones();
-               @SuppressWarnings("hiding")
-               List<Reply> replies = new ArrayList<Reply>();
+               List<PostReply> replies = new ArrayList<PostReply>();
                for (Sone sone : sones) {
-                       for (Reply reply : sone.getReplies()) {
+                       for (PostReply reply : sone.getReplies()) {
                                if (reply.getPost().equals(post)) {
                                        replies.add(reply);
                                }
@@ -726,20 +646,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Returns whether the reply with the given ID is new.
-        *
-        * @param replyId
-        *            The ID of the reply to check
-        * @return {@code true} if the reply is considered to be new, {@code false}
-        *         otherwise
-        */
-       public boolean isNewReply(String replyId) {
-               synchronized (newReplies) {
-                       return !knownReplies.contains(replyId) && newReplies.contains(replyId);
-               }
-       }
-
-       /**
         * Returns all Sones that have liked the given post.
         *
         * @param post
@@ -763,7 +669,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            The reply to get the liking Sones for
         * @return The Sones that like the given reply
         */
-       public Set<Sone> getLikes(Reply reply) {
+       public Set<Sone> getLikes(PostReply reply) {
                Set<Sone> sones = new HashSet<Sone>();
                for (Sone sone : getSones()) {
                        if (sone.getLikedReplyIds().contains(reply.getId())) {
@@ -805,7 +711,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         * @return All bookmarked posts
         */
        public Set<Post> getBookmarkedPosts() {
-               @SuppressWarnings("hiding")
                Set<Post> posts = new HashSet<Post>();
                synchronized (bookmarkedPosts) {
                        for (String bookmarkedPostId : bookmarkedPosts) {
@@ -937,29 +842,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Adds a local Sone from the given ID which has to be the ID of an own
-        * identity.
-        *
-        * @param id
-        *            The ID of an own identity to add a Sone for
-        * @return The added (or already existing) Sone
-        */
-       public Sone addLocalSone(String id) {
-               synchronized (localSones) {
-                       if (localSones.containsKey(id)) {
-                               logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
-                               return localSones.get(id);
-                       }
-                       OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
-                       if (ownIdentity == null) {
-                               logger.log(Level.INFO, "Invalid Sone ID: %s", id);
-                               return null;
-                       }
-                       return addLocalSone(ownIdentity);
-               }
-       }
-
-       /**
         * Adds a local Sone from the given own identity.
         *
         * @param ownIdentity
@@ -981,12 +863,13 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        }
                        sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
                        sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
+                       sone.setKnown(true);
                        /* TODO - load posts ’n stuff */
                        localSones.put(ownIdentity.getId(), sone);
                        final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
                        soneInserter.addSoneInsertListener(this);
                        soneInserters.put(sone, soneInserter);
-                       setSoneStatus(sone, SoneStatus.idle);
+                       sone.setStatus(SoneStatus.idle);
                        loadSone(sone);
                        soneInserter.start();
                        return sone;
@@ -1009,7 +892,13 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                }
                Sone sone = addLocalSone(ownIdentity);
                sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
-               sone.addFriend("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
+               sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
+               sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
+               sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
+               sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
+               sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
+
+               followSone(sone, getSone("nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI"));
                touchConfiguration();
                return sone;
        }
@@ -1027,30 +916,25 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        return null;
                }
                synchronized (remoteSones) {
-                       final Sone sone = getRemoteSone(identity.getId()).setIdentity(identity);
+                       final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
                        boolean newSone = sone.getRequestUri() == null;
                        sone.setRequestUri(getSoneUri(identity.getRequestUri()));
                        sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
                        if (newSone) {
-                               synchronized (newSones) {
+                               synchronized (knownSones) {
                                        newSone = !knownSones.contains(sone.getId());
-                                       if (newSone) {
-                                               newSones.add(sone.getId());
-                                       }
                                }
+                               sone.setKnown(!newSone);
                                if (newSone) {
                                        coreListenerManager.fireNewSoneFound(sone);
                                        for (Sone localSone : getLocalSones()) {
                                                if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
-                                                       localSone.addFriend(sone.getId());
-                                                       touchConfiguration();
+                                                       followSone(localSone, sone);
                                                }
                                        }
                                }
                        }
-                       remoteSones.put(identity.getId(), sone);
                        soneDownloader.addSone(sone);
-                       setSoneStatus(sone, SoneStatus.unknown);
                        soneDownloaders.execute(new Runnable() {
 
                                @Override
@@ -1065,6 +949,95 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
+        * Lets the given local Sone follow the Sone with the given ID.
+        *
+        * @param sone
+        *            The local Sone that should follow another Sone
+        * @param soneId
+        *            The ID of the Sone to follow
+        */
+       public void followSone(Sone sone, String soneId) {
+               Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
+               Sone followedSone = getSone(soneId, true);
+               if (followedSone == null) {
+                       logger.log(Level.INFO, String.format("Ignored Sone with invalid ID: %s", soneId));
+                       return;
+               }
+               followSone(sone, getSone(soneId));
+       }
+
+       /**
+        * Lets the given local Sone follow the other given Sone. If the given Sone
+        * was not followed by any local Sone before, this will mark all elements of
+        * the followed Sone as read that have been created before the current
+        * moment.
+        *
+        * @param sone
+        *            The local Sone that should follow the other Sone
+        * @param followedSone
+        *            The Sone that should be followed
+        */
+       public void followSone(Sone sone, Sone followedSone) {
+               Validation.begin().isNotNull("Sone", sone).isNotNull("Followed Sone", followedSone).check();
+               sone.addFriend(followedSone.getId());
+               synchronized (soneFollowingTimes) {
+                       if (!soneFollowingTimes.containsKey(followedSone)) {
+                               long now = System.currentTimeMillis();
+                               soneFollowingTimes.put(followedSone, now);
+                               for (Post post : followedSone.getPosts()) {
+                                       if (post.getTime() < now) {
+                                               markPostKnown(post);
+                                       }
+                               }
+                               for (PostReply reply : followedSone.getReplies()) {
+                                       if (reply.getTime() < now) {
+                                               markReplyKnown(reply);
+                                       }
+                               }
+                       }
+               }
+               touchConfiguration();
+       }
+
+       /**
+        * Lets the given local Sone unfollow the Sone with the given ID.
+        *
+        * @param sone
+        *            The local Sone that should unfollow another Sone
+        * @param soneId
+        *            The ID of the Sone being unfollowed
+        */
+       public void unfollowSone(Sone sone, String soneId) {
+               Validation.begin().isNotNull("Sone", sone).isNotNull("Sone ID", soneId).check();
+               unfollowSone(sone, getSone(soneId, false));
+       }
+
+       /**
+        * Lets the given local Sone unfollow the other given Sone. If the given
+        * local Sone is the last local Sone that followed the given Sone, its
+        * following time will be removed.
+        *
+        * @param sone
+        *            The local Sone that should unfollow another Sone
+        * @param unfollowedSone
+        *            The Sone being unfollowed
+        */
+       public void unfollowSone(Sone sone, Sone unfollowedSone) {
+               Validation.begin().isNotNull("Sone", sone).isNotNull("Unfollowed Sone", unfollowedSone).check();
+               sone.removeFriend(unfollowedSone.getId());
+               boolean unfollowedSoneStillFollowed = false;
+               for (Sone localSone : getLocalSones()) {
+                       unfollowedSoneStillFollowed |= localSone.hasFriend(unfollowedSone.getId());
+               }
+               if (!unfollowedSoneStillFollowed) {
+                       synchronized (soneFollowingTimes) {
+                               soneFollowingTimes.remove(unfollowedSone);
+                       }
+               }
+               touchConfiguration();
+       }
+
+       /**
         * Retrieves the trust relationship from the origin to the target. If the
         * trust relationship can not be retrieved, {@code null} is returned.
         *
@@ -1193,12 +1166,16 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                                        }
                                }
                                List<Post> storedPosts = storedSone.getPosts();
-                               synchronized (newPosts) {
+                               synchronized (knownPosts) {
                                        for (Post post : sone.getPosts()) {
-                                               post.setSone(storedSone);
-                                               if (!storedPosts.contains(post) && !knownPosts.contains(post.getId())) {
-                                                       newPosts.add(post.getId());
-                                                       coreListenerManager.fireNewPostFound(post);
+                                               post.setSone(storedSone).setKnown(knownPosts.contains(post.getId()));
+                                               if (!storedPosts.contains(post)) {
+                                                       if (post.getTime() < getSoneFollowingTime(sone)) {
+                                                               knownPosts.add(post.getId());
+                                                       } else if (!knownPosts.contains(post.getId())) {
+                                                               sone.setKnown(false);
+                                                               coreListenerManager.fireNewPostFound(post);
+                                                       }
                                                }
                                                posts.put(post.getId(), post);
                                        }
@@ -1206,25 +1183,45 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        }
                        synchronized (replies) {
                                if (!soneRescueMode) {
-                                       for (Reply reply : storedSone.getReplies()) {
+                                       for (PostReply reply : storedSone.getReplies()) {
                                                replies.remove(reply.getId());
                                                if (!sone.getReplies().contains(reply)) {
                                                        coreListenerManager.fireReplyRemoved(reply);
                                                }
                                        }
                                }
-                               Set<Reply> storedReplies = storedSone.getReplies();
-                               synchronized (newReplies) {
-                                       for (Reply reply : sone.getReplies()) {
-                                               reply.setSone(storedSone);
-                                               if (!storedReplies.contains(reply) && !knownReplies.contains(reply.getId())) {
-                                                       newReplies.add(reply.getId());
-                                                       coreListenerManager.fireNewReplyFound(reply);
+                               Set<PostReply> storedReplies = storedSone.getReplies();
+                               synchronized (knownReplies) {
+                                       for (PostReply reply : sone.getReplies()) {
+                                               reply.setSone(storedSone).setKnown(knownReplies.contains(reply.getId()));
+                                               if (!storedReplies.contains(reply)) {
+                                                       if (reply.getTime() < getSoneFollowingTime(sone)) {
+                                                               knownReplies.add(reply.getId());
+                                                       } else if (!knownReplies.contains(reply.getId())) {
+                                                               reply.setKnown(false);
+                                                               coreListenerManager.fireNewReplyFound(reply);
+                                                       }
                                                }
                                                replies.put(reply.getId(), reply);
                                        }
                                }
                        }
+                       synchronized (albums) {
+                               synchronized (images) {
+                                       for (Album album : storedSone.getAlbums()) {
+                                               albums.remove(album.getId());
+                                               for (Image image : album.getImages()) {
+                                                       images.remove(image.getId());
+                                               }
+                                       }
+                                       for (Album album : sone.getAlbums()) {
+                                               albums.put(album.getId(), album);
+                                               for (Image image : album.getImages()) {
+                                                       images.put(image.getId(), image);
+                                               }
+                                       }
+                               }
+                       }
                        synchronized (storedSone) {
                                if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
                                        storedSone.setTime(sone.getTime());
@@ -1235,7 +1232,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                                        for (Post post : sone.getPosts()) {
                                                storedSone.addPost(post);
                                        }
-                                       for (Reply reply : sone.getReplies()) {
+                                       for (PostReply reply : sone.getReplies()) {
                                                storedSone.addReply(reply);
                                        }
                                        for (String likedPostId : sone.getLikedPostIds()) {
@@ -1244,6 +1241,9 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                                        for (String likedReplyId : sone.getLikedReplyIds()) {
                                                storedSone.addLikedReplyId(likedReplyId);
                                        }
+                                       for (Album album : sone.getAlbums()) {
+                                               storedSone.addAlbum(album);
+                                       }
                                } else {
                                        storedSone.setPosts(sone.getPosts());
                                        storedSone.setReplies(sone.getReplies());
@@ -1293,19 +1293,20 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Marks the given Sone as known. If the Sone was {@link #isNewPost(String)
-        * new} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
+        * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
+        * known} before, a {@link CoreListener#markSoneKnown(Sone)} event is fired.
         *
         * @param sone
         *            The Sone to mark as known
         */
        public void markSoneKnown(Sone sone) {
-               synchronized (newSones) {
-                       if (newSones.remove(sone.getId())) {
+               if (!sone.isKnown()) {
+                       sone.setKnown(true);
+                       synchronized (knownSones) {
                                knownSones.add(sone.getId());
-                               coreListenerManager.fireMarkSoneKnown(sone);
-                               touchConfiguration();
                        }
+                       coreListenerManager.fireMarkSoneKnown(sone);
+                       touchConfiguration();
                }
        }
 
@@ -1325,6 +1326,10 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                /* initialize options. */
                sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
                sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
+               sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
+               sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
+               sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
+               sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 
                /* load Sone. */
                String sonePrefix = "Sone/" + sone.getId();
@@ -1336,7 +1341,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 
                /* load profile. */
-               Profile profile = new Profile();
+               Profile profile = new Profile(sone);
                profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
                profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
                profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
@@ -1356,7 +1361,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                }
 
                /* load posts. */
-               @SuppressWarnings("hiding")
                Set<Post> posts = new HashSet<Post>();
                while (true) {
                        String postPrefix = sonePrefix + "/Posts/" + posts.size();
@@ -1379,8 +1383,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                }
 
                /* load replies. */
-               @SuppressWarnings("hiding")
-               Set<Reply> replies = new HashSet<Reply>();
+               Set<PostReply> replies = new HashSet<PostReply>();
                while (true) {
                        String replyPrefix = sonePrefix + "/Replies/" + replies.size();
                        String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
@@ -1439,11 +1442,12 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
                        String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
                        String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
+                       String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
                        if ((albumTitle == null) || (albumDescription == null)) {
                                logger.log(Level.WARNING, "Invalid album found, aborting load!");
                                return;
                        }
-                       Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription);
+                       Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
                        if (albumParentId != null) {
                                Album parentAlbum = getAlbum(albumParentId, false);
                                if (parentAlbum == null) {
@@ -1485,9 +1489,19 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        album.addImage(image);
                }
 
+               /* load avatar. */
+               String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
+               if (avatarId != null) {
+                       profile.setAvatar(getImage(avatarId, false));
+               }
+
                /* load options. */
                sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
                sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
+               sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
+               sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
+               sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
+               sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
 
                /* if we’re still here, Sone was loaded successfully. */
                synchronized (sone) {
@@ -1497,22 +1511,24 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        sone.setReplies(replies);
                        sone.setLikePostIds(likedPostIds);
                        sone.setLikeReplyIds(likedReplyIds);
-                       sone.setFriends(friends);
+                       for (String friendId : friends) {
+                               followSone(sone, friendId);
+                       }
                        sone.setAlbums(topLevelAlbums);
                        soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
                }
-               synchronized (newSones) {
+               synchronized (knownSones) {
                        for (String friend : friends) {
                                knownSones.add(friend);
                        }
                }
-               synchronized (newPosts) {
+               synchronized (knownPosts) {
                        for (Post post : posts) {
                                knownPosts.add(post.getId());
                        }
                }
-               synchronized (newReplies) {
-                       for (Reply reply : replies) {
+               synchronized (knownReplies) {
+                       for (PostReply reply : replies) {
                                knownReplies.add(reply.getId());
                        }
                }
@@ -1588,10 +1604,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                synchronized (posts) {
                        posts.put(post.getId(), post);
                }
-               synchronized (newPosts) {
-                       newPosts.add(post.getId());
-                       coreListenerManager.fireNewPostFound(post);
-               }
+               coreListenerManager.fireNewPostFound(post);
                sone.addPost(post);
                touchConfiguration();
                localElementTicker.registerEvent(System.currentTimeMillis() + 10 * 1000, new Runnable() {
@@ -1623,25 +1636,22 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        posts.remove(post.getId());
                }
                coreListenerManager.firePostRemoved(post);
-               synchronized (newPosts) {
-                       markPostKnown(post);
-                       knownPosts.remove(post.getId());
-               }
+               markPostKnown(post);
                touchConfiguration();
        }
 
        /**
-        * Marks the given post as known, if it is currently a new post (according
-        * to {@link #isNewPost(String)}).
+        * Marks the given post as known, if it is currently not a known post
+        * (according to {@link Post#isKnown()}).
         *
         * @param post
         *            The post to mark as known
         */
        public void markPostKnown(Post post) {
-               synchronized (newPosts) {
-                       if (newPosts.remove(post.getId())) {
-                               knownPosts.add(post.getId());
-                               coreListenerManager.fireMarkPostKnown(post);
+               post.setKnown(true);
+               synchronized (knownPosts) {
+                       coreListenerManager.fireMarkPostKnown(post);
+                       if (knownPosts.add(post.getId())) {
                                touchConfiguration();
                        }
                }
@@ -1702,7 +1712,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            The text of the reply
         * @return The created reply
         */
-       public Reply createReply(Sone sone, Post post, String text) {
+       public PostReply createReply(Sone sone, Post post, String text) {
                return createReply(sone, post, System.currentTimeMillis(), text);
        }
 
@@ -1719,17 +1729,16 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         *            The text of the reply
         * @return The created reply
         */
-       public Reply createReply(Sone sone, Post post, long time, String text) {
+       public PostReply createReply(Sone sone, Post post, long time, String text) {
                if (!isLocalSone(sone)) {
                        logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
                        return null;
                }
-               final Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
+               final PostReply reply = new PostReply(sone, post, System.currentTimeMillis(), text);
                synchronized (replies) {
                        replies.put(reply.getId(), reply);
                }
-               synchronized (newReplies) {
-                       newReplies.add(reply.getId());
+               synchronized (knownReplies) {
                        coreListenerManager.fireNewReplyFound(reply);
                }
                sone.addReply(reply);
@@ -1753,7 +1762,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
         * @param reply
         *            The reply to delete
         */
-       public void deleteReply(Reply reply) {
+       public void deleteReply(PostReply reply) {
                Sone sone = reply.getSone();
                if (!isLocalSone(sone)) {
                        logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
@@ -1762,7 +1771,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                synchronized (replies) {
                        replies.remove(reply.getId());
                }
-               synchronized (newReplies) {
+               synchronized (knownReplies) {
                        markReplyKnown(reply);
                        knownReplies.remove(reply.getId());
                }
@@ -1771,17 +1780,17 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
        }
 
        /**
-        * Marks the given reply as known, if it is currently a new reply (according
-        * to {@link #isNewReply(String)}).
+        * Marks the given reply as known, if it is currently not a known reply
+        * (according to {@link Reply#isKnown()}).
         *
         * @param reply
         *            The reply to mark as known
         */
-       public void markReplyKnown(Reply reply) {
-               synchronized (newReplies) {
-                       if (newReplies.remove(reply.getId())) {
-                               knownReplies.add(reply.getId());
-                               coreListenerManager.fireMarkReplyKnown(reply);
+       public void markReplyKnown(PostReply reply) {
+               reply.setKnown(true);
+               synchronized (knownReplies) {
+                       coreListenerManager.fireMarkReplyKnown(reply);
+                       if (knownReplies.add(reply.getId())) {
                                touchConfiguration();
                        }
                }
@@ -2012,8 +2021,6 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                logger.log(Level.INFO, "Saving Sone: %s", sone);
                try {
-                       ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
-
                        /* save Sone into configuration. */
                        String sonePrefix = "Sone/" + sone.getId();
                        configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
@@ -2027,6 +2034,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
                        configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
                        configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
+                       configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
 
                        /* save profile fields. */
                        int fieldCounter = 0;
@@ -2050,7 +2058,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                        /* save replies. */
                        int replyCounter = 0;
-                       for (Reply reply : sone.getReplies()) {
+                       for (PostReply reply : sone.getReplies()) {
                                String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
                                configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
                                configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
@@ -2081,7 +2089,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
 
                        /* save albums. first, collect in a flat structure, top-level first. */
-                       List<Album> albums = Sone.flattenAlbums(sone.getAlbums());
+                       List<Album> albums = sone.getAllAlbums();
 
                        int albumCounter = 0;
                        for (Album album : albums) {
@@ -2090,6 +2098,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                                configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
                                configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
                                configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
+                               configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
                        }
                        configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
 
@@ -2115,9 +2124,16 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                        /* save options. */
                        configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
+                       configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
+                       configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
+                       configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
                        configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
+                       configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
 
                        configuration.save();
+
+                       ((OwnIdentity) sone.getIdentity()).setProperty("Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
+
                        logger.log(Level.INFO, "Sone %s saved.", sone);
                } catch (ConfigurationException ce1) {
                        logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
@@ -2144,6 +2160,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
                        configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
                        configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
+                       configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
                        configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
                        configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
                        configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
@@ -2156,16 +2173,27 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                        /* save known Sones. */
                        int soneCounter = 0;
-                       synchronized (newSones) {
+                       synchronized (knownSones) {
                                for (String knownSoneId : knownSones) {
                                        configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
                                }
                                configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
                        }
 
+                       /* save Sone following times. */
+                       soneCounter = 0;
+                       synchronized (soneFollowingTimes) {
+                               for (Entry<Sone, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
+                                       configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey().getId());
+                                       configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
+                                       ++soneCounter;
+                               }
+                               configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
+                       }
+
                        /* save known posts. */
                        int postCounter = 0;
-                       synchronized (newPosts) {
+                       synchronized (knownPosts) {
                                for (String knownPostId : knownPosts) {
                                        configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
                                }
@@ -2174,7 +2202,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                        /* save known replies. */
                        int replyCounter = 0;
-                       synchronized (newReplies) {
+                       synchronized (knownReplies) {
                                for (String knownReplyId : knownReplies) {
                                        configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
                                }
@@ -2217,7 +2245,8 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
 
                }));
                options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangeValidator(1, Integer.MAX_VALUE)));
-               options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
+               options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
+               options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, new OrValidator<Integer>(new IntegerRangeValidator(50, Integer.MAX_VALUE), new EqualityValidator<Integer>(-1))));
                options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
                options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangeValidator(0, 100)));
                options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangeValidator(-100, 100)));
@@ -2257,6 +2286,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                loadConfigurationValue("InsertionDelay");
                loadConfigurationValue("PostsPerPage");
                loadConfigurationValue("CharactersPerPost");
+               loadConfigurationValue("PostCutOffLength");
                options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
                loadConfigurationValue("PositiveTrust");
                loadConfigurationValue("NegativeTrust");
@@ -2272,11 +2302,30 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        if (knownSoneId == null) {
                                break;
                        }
-                       synchronized (newSones) {
+                       synchronized (knownSones) {
                                knownSones.add(knownSoneId);
                        }
                }
 
+               /* load Sone following times. */
+               soneCounter = 0;
+               while (true) {
+                       String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
+                       if (soneId == null) {
+                               break;
+                       }
+                       long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
+                       Sone followedSone = getSone(soneId);
+                       if (followedSone == null) {
+                               logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
+                       } else {
+                               synchronized (soneFollowingTimes) {
+                                       soneFollowingTimes.put(getSone(soneId), time);
+                               }
+                       }
+                       ++soneCounter;
+               }
+
                /* load known posts. */
                int postCounter = 0;
                while (true) {
@@ -2284,7 +2333,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        if (knownPostId == null) {
                                break;
                        }
-                       synchronized (newPosts) {
+                       synchronized (knownPosts) {
                                knownPosts.add(knownPostId);
                        }
                }
@@ -2296,7 +2345,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        if (knownReplyId == null) {
                                break;
                        }
-                       synchronized (newReplies) {
+                       synchronized (knownReplies) {
                                knownReplies.add(knownReplyId);
                        }
                }
@@ -2392,7 +2441,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        @Override
                        @SuppressWarnings("synthetic-access")
                        public void run() {
-                               Sone sone = getRemoteSone(identity.getId());
+                               Sone sone = getRemoteSone(identity.getId(), false);
                                sone.setIdentity(identity);
                                sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
                                soneDownloader.addSone(sone);
@@ -2426,19 +2475,17 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                        return;
                }
                synchronized (posts) {
-                       synchronized (newPosts) {
+                       synchronized (knownPosts) {
                                for (Post post : sone.getPosts()) {
                                        posts.remove(post.getId());
-                                       newPosts.remove(post.getId());
                                        coreListenerManager.firePostRemoved(post);
                                }
                        }
                }
                synchronized (replies) {
-                       synchronized (newReplies) {
-                               for (Reply reply : sone.getReplies()) {
+                       synchronized (knownReplies) {
+                               for (PostReply reply : sone.getReplies()) {
                                        replies.remove(reply.getId());
-                                       newReplies.remove(reply.getId());
                                        coreListenerManager.fireReplyRemoved(reply);
                                }
                        }
@@ -2446,10 +2493,7 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                synchronized (remoteSones) {
                        remoteSones.remove(identity.getId());
                }
-               synchronized (newSones) {
-                       newSones.remove(identity.getId());
-                       coreListenerManager.fireSoneRemoved(sone);
-               }
+               coreListenerManager.fireSoneRemoved(sone);
        }
 
        //
@@ -2570,8 +2614,8 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                 *
                 * @param insertionDelay
                 *            The insertion delay to validate
-                * @return {@code true} if the given insertion delay was valid, {@code
-                *         false} otherwise
+                * @return {@code true} if the given insertion delay was valid,
+                *         {@code false} otherwise
                 */
                public boolean validateInsertionDelay(Integer insertionDelay) {
                        return options.getIntegerOption("InsertionDelay").validate(insertionDelay);
@@ -2659,6 +2703,39 @@ public class Core extends AbstractService implements IdentityListener, UpdateLis
                }
 
                /**
+                * Returns the number of characters the shortened post should have.
+                *
+                * @return The number of characters of the snippet
+                */
+               public int getPostCutOffLength() {
+                       return options.getIntegerOption("PostCutOffLength").get();
+               }
+
+               /**
+                * Validates the number of characters after which to cut off the post.
+                *
+                * @param postCutOffLength
+                *            The number of characters of the snippet
+                * @return {@code true} if the number of characters of the snippet is
+                *         valid, {@code false} otherwise
+                */
+               public boolean validatePostCutOffLength(Integer postCutOffLength) {
+                       return options.getIntegerOption("PostCutOffLength").validate(postCutOffLength);
+               }
+
+               /**
+                * Sets the number of characters the shortened post should have.
+                *
+                * @param postCutOffLength
+                *            The number of characters of the snippet
+                * @return This preferences
+                */
+               public Preferences setPostCutOffLength(Integer postCutOffLength) {
+                       options.getIntegerOption("PostCutOffLength").set(postCutOffLength);
+                       return this;
+               }
+
+               /**
                 * Returns whether Sone requires full access to be even visible.
                 *
                 * @return {@code true} if Sone requires full access, {@code false}