Add method to not create a new post automatically.
[Sone.git] / src / main / java / net / pterodactylus / sone / core / Core.java
index 60101b4..ea491bb 100644 (file)
@@ -31,6 +31,7 @@ import java.util.logging.Logger;
 import net.pterodactylus.sone.core.Options.DefaultOption;
 import net.pterodactylus.sone.core.Options.Option;
 import net.pterodactylus.sone.core.Options.OptionWatcher;
+import net.pterodactylus.sone.data.Client;
 import net.pterodactylus.sone.data.Post;
 import net.pterodactylus.sone.data.Profile;
 import net.pterodactylus.sone.data.Reply;
@@ -39,6 +40,7 @@ import net.pterodactylus.sone.freenet.wot.Identity;
 import net.pterodactylus.sone.freenet.wot.IdentityListener;
 import net.pterodactylus.sone.freenet.wot.IdentityManager;
 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
+import net.pterodactylus.sone.main.SonePlugin;
 import net.pterodactylus.util.config.Configuration;
 import net.pterodactylus.util.config.ConfigurationException;
 import net.pterodactylus.util.logging.Logging;
@@ -78,6 +80,9 @@ public class Core implements IdentityListener {
        /** The options. */
        private final Options options = new Options();
 
+       /** The core listener manager. */
+       private final CoreListenerManager coreListenerManager = new CoreListenerManager(this);
+
        /** The configuration. */
        private final Configuration configuration;
 
@@ -90,10 +95,17 @@ public class Core implements IdentityListener {
        /** The Sone downloader. */
        private final SoneDownloader soneDownloader;
 
+       /** Whether the core has been stopped. */
+       private volatile boolean stopped;
+
        /** The Sones’ statuses. */
        /* synchronize access on itself. */
        private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
 
+       /** Locked local Sones. */
+       /* synchronize on itself. */
+       private final Set<Sone> lockedSones = new HashSet<Sone>();
+
        /** Sone inserters. */
        /* synchronize access on this on localSones. */
        private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
@@ -150,6 +162,30 @@ public class Core implements IdentityListener {
        }
 
        //
+       // LISTENER MANAGEMENT
+       //
+
+       /**
+        * Adds a new core listener.
+        *
+        * @param coreListener
+        *            The listener to add
+        */
+       public void addCoreListener(CoreListener coreListener) {
+               coreListenerManager.addListener(coreListener);
+       }
+
+       /**
+        * Removes a core listener.
+        *
+        * @param coreListener
+        *            The listener to remove
+        */
+       public void removeCoreListener(CoreListener coreListener) {
+               coreListenerManager.removeListener(coreListener);
+       }
+
+       //
        // ACCESSORS
        //
 
@@ -163,6 +199,16 @@ public class Core implements IdentityListener {
        }
 
        /**
+        * Returns whether the “Sone rescue mode” is currently activated.
+        *
+        * @return {@code true} if the “Sone rescue mode” is currently activated,
+        *         {@code false} if it is not
+        */
+       public boolean isSoneRescueMode() {
+               return options.getBooleanOption("SoneRescueMode").get();
+       }
+
+       /**
         * Returns the identity manager used by the core.
         *
         * @return The identity manager
@@ -199,6 +245,19 @@ public class Core implements IdentityListener {
        }
 
        /**
+        * Returns whether the given Sone is currently locked.
+        *
+        * @param sone
+        *            The sone to check
+        * @return {@code true} if the Sone is locked, {@code false} if it is not
+        */
+       public boolean isLocked(Sone sone) {
+               synchronized (lockedSones) {
+                       return lockedSones.contains(sone);
+               }
+       }
+
+       /**
         * Returns all Sones, remote and local.
         *
         * @return All Sones
@@ -301,9 +360,23 @@ public class Core implements IdentityListener {
         * @return The Sone with the given ID
         */
        public Sone getLocalSone(String id) {
+               return getLocalSone(id, true);
+       }
+
+       /**
+        * Returns the local Sone with the given ID, optionally creating a new Sone.
+        *
+        * @param id
+        *            The ID of the Sone
+        * @param create
+        *            {@code true} to create a new Sone if none exists,
+        *            {@code false} to return null if none exists
+        * @return The Sone with the given ID, or {@code null}
+        */
+       public Sone getLocalSone(String id, boolean create) {
                synchronized (localSones) {
                        Sone sone = localSones.get(id);
-                       if (sone == null) {
+                       if ((sone == null) && create) {
                                sone = new Sone(id);
                                localSones.put(id, sone);
                        }
@@ -395,6 +468,9 @@ public class Core implements IdentityListener {
                synchronized (newSones) {
                        boolean isNew = !knownSones.contains(sone.getId()) && newSones.remove(sone.getId());
                        knownSones.add(sone.getId());
+                       if (isNew) {
+                               coreListenerManager.fireMarkSoneKnown(sone);
+                       }
                        return isNew;
                }
        }
@@ -419,9 +495,23 @@ public class Core implements IdentityListener {
         * @return The post, or {@code null} if there is no such post
         */
        public Post getPost(String postId) {
+               return getPost(postId, true);
+       }
+
+       /**
+        * Returns the post with the given ID, optionally creating a new post.
+        *
+        * @param postId
+        *            The ID of the post to get
+        * @param create
+        *            {@code true} it create a new post if no post with the given ID
+        *            exists, {@code false} to return {@code null}
+        * @return The post, or {@code null} if there is no such post
+        */
+       public Post getPost(String postId, boolean create) {
                synchronized (posts) {
                        Post post = posts.get(postId);
-                       if (post == null) {
+                       if ((post == null) && create) {
                                post = new Post(postId);
                                posts.put(postId, post);
                        }
@@ -442,6 +532,9 @@ public class Core implements IdentityListener {
                synchronized (newPosts) {
                        boolean isNew = !knownPosts.contains(postId) && newPosts.remove(postId);
                        knownPosts.add(postId);
+                       if (isNew) {
+                               coreListenerManager.fireMarkPostKnown(getPost(postId));
+                       }
                        return isNew;
                }
        }
@@ -497,6 +590,9 @@ public class Core implements IdentityListener {
                synchronized (newReplies) {
                        boolean isNew = !knownReplies.contains(replyId) && newReplies.remove(replyId);
                        knownReplies.add(replyId);
+                       if (isNew) {
+                               coreListenerManager.fireMarkReplyKnown(getReply(replyId));
+                       }
                        return isNew;
                }
        }
@@ -540,6 +636,33 @@ public class Core implements IdentityListener {
        //
 
        /**
+        * Locks the given Sone. A locked Sone will not be inserted by
+        * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
+        * again.
+        *
+        * @param sone
+        *            The sone to lock
+        */
+       public void lockSone(Sone sone) {
+               synchronized (lockedSones) {
+                       lockedSones.add(sone);
+               }
+       }
+
+       /**
+        * Unlocks the given Sone.
+        *
+        * @see #lockSone(Sone)
+        * @param sone
+        *            The sone to unlock
+        */
+       public void unlockSone(Sone sone) {
+               synchronized (lockedSones) {
+                       lockedSones.remove(sone);
+               }
+       }
+
+       /**
         * Adds a local Sone from the given ID which has to be the ID of an own
         * identity.
         *
@@ -578,24 +701,42 @@ public class Core implements IdentityListener {
                        final Sone sone;
                        try {
                                sone = getLocalSone(ownIdentity.getId()).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
-                               sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
                        } catch (MalformedURLException mue1) {
                                logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
                                return null;
                        }
+                       sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
+                       sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
                        /* TODO - load posts ’n stuff */
                        localSones.put(ownIdentity.getId(), sone);
-                       SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
+                       final SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
                        soneInserters.put(sone, soneInserter);
                        setSoneStatus(sone, SoneStatus.idle);
                        loadSone(sone);
-                       soneInserter.start();
+                       if (!isSoneRescueMode()) {
+                               soneInserter.start();
+                       }
                        new Thread(new Runnable() {
 
                                @Override
                                @SuppressWarnings("synthetic-access")
                                public void run() {
-                                       soneDownloader.fetchSone(sone);
+                                       if (!isSoneRescueMode()) {
+                                               soneDownloader.fetchSone(sone);
+                                               return;
+                                       }
+                                       logger.log(Level.INFO, "Trying to restore Sone from Freenet…");
+                                       coreListenerManager.fireRescuingSone(sone);
+                                       lockSone(sone);
+                                       long edition = sone.getLatestEdition();
+                                       while (!stopped && (edition >= 0) && isSoneRescueMode()) {
+                                               logger.log(Level.FINE, "Downloading edition " + edition + "…");
+                                               soneDownloader.fetchSone(sone, sone.getRequestUri().setKeyType("SSK").setDocName("Sone-" + edition));
+                                               --edition;
+                                       }
+                                       logger.log(Level.INFO, "Finished restoring Sone from Freenet, starting Inserter…");
+                                       coreListenerManager.fireRescuedSone(sone);
+                                       soneInserter.start();
                                }
 
                        }, "Sone Downloader").start();
@@ -635,7 +776,13 @@ public class Core implements IdentityListener {
                        sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
                        if (newSone) {
                                synchronized (newSones) {
-                                       newSones.add(sone.getId());
+                                       newSone = !knownSones.contains(sone.getId());
+                                       if (newSone) {
+                                               newSones.add(sone.getId());
+                                       }
+                               }
+                               if (newSone) {
+                                       coreListenerManager.fireNewSoneFound(sone);
                                }
                        }
                        remoteSones.put(identity.getId(), sone);
@@ -662,32 +809,40 @@ public class Core implements IdentityListener {
         */
        public void updateSone(Sone sone) {
                if (hasSone(sone.getId())) {
+                       boolean soneRescueMode = isLocalSone(sone) && isSoneRescueMode();
                        Sone storedSone = getSone(sone.getId());
-                       if (!(sone.getTime() > storedSone.getTime())) {
+                       if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
                                logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
                                return;
                        }
                        synchronized (posts) {
-                               for (Post post : storedSone.getPosts()) {
-                                       posts.remove(post.getId());
+                               if (!soneRescueMode) {
+                                       for (Post post : storedSone.getPosts()) {
+                                               posts.remove(post.getId());
+                                       }
                                }
                                synchronized (newPosts) {
                                        for (Post post : sone.getPosts()) {
-                                               if (!storedSone.getPosts().contains(post) && !knownSones.contains(post.getId())) {
+                                               if (!storedSone.getPosts().contains(post) && !knownPosts.contains(post.getId())) {
+                                                       post.setSone(getSone(post.getSone().getId()));
                                                        newPosts.add(post.getId());
+                                                       coreListenerManager.fireNewPostFound(post);
                                                }
                                                posts.put(post.getId(), post);
                                        }
                                }
                        }
                        synchronized (replies) {
-                               for (Reply reply : storedSone.getReplies()) {
-                                       replies.remove(reply.getId());
+                               if (!soneRescueMode) {
+                                       for (Reply reply : storedSone.getReplies()) {
+                                               replies.remove(reply.getId());
+                                       }
                                }
                                synchronized (newReplies) {
                                        for (Reply reply : sone.getReplies()) {
-                                               if (!storedSone.getReplies().contains(reply) && !knownSones.contains(reply.getId())) {
+                                               if (!storedSone.getReplies().contains(reply) && !knownReplies.contains(reply.getId())) {
                                                        newReplies.add(reply.getId());
+                                                       coreListenerManager.fireNewReplyFound(reply);
                                                }
                                                replies.put(reply.getId(), reply);
                                        }
@@ -695,11 +850,27 @@ public class Core implements IdentityListener {
                        }
                        synchronized (storedSone) {
                                storedSone.setTime(sone.getTime());
+                               storedSone.setClient(sone.getClient());
                                storedSone.setProfile(sone.getProfile());
-                               storedSone.setPosts(sone.getPosts());
-                               storedSone.setReplies(sone.getReplies());
-                               storedSone.setLikePostIds(sone.getLikedPostIds());
-                               storedSone.setLikeReplyIds(sone.getLikedReplyIds());
+                               if (soneRescueMode) {
+                                       for (Post post : sone.getPosts()) {
+                                               storedSone.addPost(post);
+                                       }
+                                       for (Reply reply : sone.getReplies()) {
+                                               storedSone.addReply(reply);
+                                       }
+                                       for (String likedPostId : sone.getLikedPostIds()) {
+                                               storedSone.addLikedPostId(likedPostId);
+                                       }
+                                       for (String likedReplyId : sone.getLikedReplyIds()) {
+                                               storedSone.addLikedReplyId(likedReplyId);
+                                       }
+                               } else {
+                                       storedSone.setPosts(sone.getPosts());
+                                       storedSone.setReplies(sone.getReplies());
+                                       storedSone.setLikePostIds(sone.getLikedPostIds());
+                                       storedSone.setLikeReplyIds(sone.getLikedReplyIds());
+                               }
                                storedSone.setLatestEdition(sone.getRequestUri().getEdition());
                        }
                }
@@ -1006,9 +1177,10 @@ public class Core implements IdentityListener {
         *            The post that this reply refers to
         * @param text
         *            The text of the reply
+        * @return The created reply
         */
-       public void createReply(Sone sone, Post post, String text) {
-               createReply(sone, post, System.currentTimeMillis(), text);
+       public Reply createReply(Sone sone, Post post, String text) {
+               return createReply(sone, post, System.currentTimeMillis(), text);
        }
 
        /**
@@ -1022,11 +1194,12 @@ public class Core implements IdentityListener {
         *            The time of the reply
         * @param text
         *            The text of the reply
+        * @return The created reply
         */
-       public void createReply(Sone sone, Post post, long time, String text) {
+       public Reply 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;
+                       return null;
                }
                Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
                synchronized (replies) {
@@ -1037,6 +1210,7 @@ public class Core implements IdentityListener {
                }
                sone.addReply(reply);
                saveSone(sone);
+               return reply;
        }
 
        /**
@@ -1075,6 +1249,7 @@ public class Core implements IdentityListener {
                        }
                }
                saveConfiguration();
+               stopped = true;
        }
 
        //
@@ -1095,6 +1270,7 @@ public class Core implements IdentityListener {
                        }
 
                }));
+               options.addBooleanOption("SoneRescueMode", new DefaultOption<Boolean>(false));
                options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
                options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
 
@@ -1110,6 +1286,7 @@ public class Core implements IdentityListener {
                }
 
                options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
+               options.getBooleanOption("SoneRescueMode").set(configuration.getBooleanValue("Option/SoneRescueMode").getValue(null));
 
                /* load known Sones. */
                int soneCounter = 0;
@@ -1156,6 +1333,7 @@ public class Core implements IdentityListener {
                /* store the options first. */
                try {
                        configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
+                       configuration.getBooleanValue("Option/SoneRescueMode").setValue(options.getBooleanOption("SoneRescueMode").getReal());
                        configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
                        configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());