src/main/java/net/pterodactylus/sone/core/Core.java

   1 /*
   2  * Sone - Core.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.core;
  19
  20 import static com.google.common.base.Optional.fromNullable;
  21 import static com.google.common.base.Preconditions.checkArgument;
  22 import static com.google.common.base.Preconditions.checkNotNull;
  23 import static com.google.common.base.Predicates.not;
  24 import static com.google.common.primitives.Longs.tryParse;
  25 import static java.lang.String.format;
  26 import static java.util.logging.Level.WARNING;
  27 import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
  28 import static net.pterodactylus.sone.data.Sone.toAllAlbums;
  29
  30 import java.net.MalformedURLException;
  31 import java.util.ArrayList;
  32 import java.util.Collection;
  33 import java.util.HashMap;
  34 import java.util.HashSet;
  35 import java.util.List;
  36 import java.util.Map;
  37 import java.util.Map.Entry;
  38 import java.util.Set;
  39 import java.util.concurrent.ExecutorService;
  40 import java.util.concurrent.Executors;
  41 import java.util.concurrent.ScheduledExecutorService;
  42 import java.util.concurrent.TimeUnit;
  43 import java.util.logging.Level;
  44 import java.util.logging.Logger;
  45
  46 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidAlbumFound;
  47 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidImageFound;
  48 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidParentAlbumFound;
  49 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidPostFound;
  50 import net.pterodactylus.sone.core.ConfigurationSoneParser.InvalidPostReplyFound;
  51 import net.pterodactylus.sone.core.Options.DefaultOption;
  52 import net.pterodactylus.sone.core.SoneChangeDetector.PostProcessor;
  53 import net.pterodactylus.sone.core.SoneChangeDetector.PostReplyProcessor;
  54 import net.pterodactylus.sone.core.SoneInserter.SetInsertionDelay;
  55 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  56 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  57 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  58 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  59 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  60 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  61 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  62 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  63 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  64 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  65 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  66 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  67 import net.pterodactylus.sone.data.Album;
  68 import net.pterodactylus.sone.data.Client;
  69 import net.pterodactylus.sone.data.Image;
  70 import net.pterodactylus.sone.data.Post;
  71 import net.pterodactylus.sone.data.PostReply;
  72 import net.pterodactylus.sone.data.Profile;
  73 import net.pterodactylus.sone.data.Profile.Field;
  74 import net.pterodactylus.sone.data.Reply;
  75 import net.pterodactylus.sone.data.Sone;
  76 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  77 import net.pterodactylus.sone.data.Sone.SoneStatus;
  78 import net.pterodactylus.sone.data.SoneImpl;
  79 import net.pterodactylus.sone.data.TemporaryImage;
  80 import net.pterodactylus.sone.database.AlbumBuilder;
  81 import net.pterodactylus.sone.database.Database;
  82 import net.pterodactylus.sone.database.DatabaseException;
  83 import net.pterodactylus.sone.database.ImageBuilder;
  84 import net.pterodactylus.sone.database.PostBuilder;
  85 import net.pterodactylus.sone.database.PostProvider;
  86 import net.pterodactylus.sone.database.PostReplyBuilder;
  87 import net.pterodactylus.sone.database.PostReplyProvider;
  88 import net.pterodactylus.sone.database.SoneProvider;
  89 import net.pterodactylus.sone.fcp.FcpInterface;
  90 import net.pterodactylus.sone.freenet.wot.Identity;
  91 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  92 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  93 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  94 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  95 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  96 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  97 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  98 import net.pterodactylus.sone.main.SonePlugin;
  99 import net.pterodactylus.sone.utils.IntegerRangePredicate;
 100 import net.pterodactylus.util.config.Configuration;
 101 import net.pterodactylus.util.config.ConfigurationException;
 102 import net.pterodactylus.util.logging.Logging;
 103 import net.pterodactylus.util.number.Numbers;
 104 import net.pterodactylus.util.service.AbstractService;
 105 import net.pterodactylus.util.thread.NamedThreadFactory;
 106
 107 import com.google.common.annotations.VisibleForTesting;
 108 import com.google.common.base.Optional;
 109 import com.google.common.base.Predicates;
 110 import com.google.common.collect.FluentIterable;
 111 import com.google.common.collect.HashMultimap;
 112 import com.google.common.collect.ImmutableSet;
 113 import com.google.common.collect.Multimap;
 114 import com.google.common.collect.Multimaps;
 115 import com.google.common.eventbus.EventBus;
 116 import com.google.common.eventbus.Subscribe;
 117 import com.google.inject.Inject;
 118 import com.google.inject.Singleton;
 119
 120 import freenet.keys.FreenetURI;
 121
 122 /**
 123  * The Sone core.
 124  *
 125  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 126  */
 127 @Singleton
 128 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 129
 130         /** The logger. */
 131         private static final Logger logger = Logging.getLogger(Core.class);
 132
 133         /** The start time. */
 134         private final long startupTime = System.currentTimeMillis();
 135
 136         /** The options. */
 137         private final Options options = new Options();
 138
 139         /** The preferences. */
 140         private final Preferences preferences = new Preferences(options);
 141
 142         /** The event bus. */
 143         private final EventBus eventBus;
 144
 145         /** The configuration. */
 146         private final Configuration configuration;
 147
 148         /** Whether we’re currently saving the configuration. */
 149         private boolean storingConfiguration = false;
 150
 151         /** The identity manager. */
 152         private final IdentityManager identityManager;
 153
 154         /** Interface to freenet. */
 155         private final FreenetInterface freenetInterface;
 156
 157         /** The Sone downloader. */
 158         private final SoneDownloader soneDownloader;
 159
 160         /** The image inserter. */
 161         private final ImageInserter imageInserter;
 162
 163         /** Sone downloader thread-pool. */
 164         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 165
 166         /** The update checker. */
 167         private final UpdateChecker updateChecker;
 168
 169         /** The trust updater. */
 170         private final WebOfTrustUpdater webOfTrustUpdater;
 171
 172         /** The FCP interface. */
 173         private volatile FcpInterface fcpInterface;
 174
 175         /** The times Sones were followed. */
 176         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 177
 178         /** Locked local Sones. */
 179         /* synchronize on itself. */
 180         private final Set<Sone> lockedSones = new HashSet<Sone>();
 181
 182         /** Sone inserters. */
 183         /* synchronize access on this on sones. */
 184         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 185
 186         /** Sone rescuers. */
 187         /* synchronize access on this on sones. */
 188         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 189
 190         /** All Sones. */
 191         /* synchronize access on this on itself. */
 192         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 193
 194         /** All known Sones. */
 195         private final Set<String> knownSones = new HashSet<String>();
 196
 197         /** The post database. */
 198         private final Database database;
 199
 200         /** All bookmarked posts. */
 201         /* synchronize access on itself. */
 202         private final Set<String> bookmarkedPosts = new HashSet<String>();
 203
 204         /** Trusted identities, sorted by own identities. */
 205         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 206
 207         /** All temporary images. */
 208         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 209
 210         /** Ticker for threads that mark own elements as known. */
 211         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 212
 213         /** The time the configuration was last touched. */
 214         private volatile long lastConfigurationUpdate;
 215
 216         /**
 217          * Creates a new core.
 218          *
 219          * @param configuration
 220          *            The configuration of the core
 221          * @param freenetInterface
 222          *            The freenet interface
 223          * @param identityManager
 224          *            The identity manager
 225          * @param webOfTrustUpdater
 226          *            The WebOfTrust updater
 227          * @param eventBus
 228          *            The event bus
 229          * @param database
 230          *            The database
 231          */
 232         @Inject
 233         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 234                 super("Sone Core");
 235                 this.configuration = configuration;
 236                 this.freenetInterface = freenetInterface;
 237                 this.identityManager = identityManager;
 238                 this.soneDownloader = new SoneDownloaderImpl(this, freenetInterface);
 239                 this.imageInserter = new ImageInserter(freenetInterface, freenetInterface.new InsertTokenSupplier());
 240                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 241                 this.webOfTrustUpdater = webOfTrustUpdater;
 242                 this.eventBus = eventBus;
 243                 this.database = database;
 244         }
 245
 246         @VisibleForTesting
 247         protected Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, SoneDownloader soneDownloader, ImageInserter imageInserter, UpdateChecker updateChecker, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 248                 super("Sone Core");
 249                 this.configuration = configuration;
 250                 this.freenetInterface = freenetInterface;
 251                 this.identityManager = identityManager;
 252                 this.soneDownloader = soneDownloader;
 253                 this.imageInserter = imageInserter;
 254                 this.updateChecker = updateChecker;
 255                 this.webOfTrustUpdater = webOfTrustUpdater;
 256                 this.eventBus = eventBus;
 257                 this.database = database;
 258         }
 259
 260         //
 261         // ACCESSORS
 262         //
 263
 264         /**
 265          * Returns the time Sone was started.
 266          *
 267          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 268          */
 269         public long getStartupTime() {
 270                 return startupTime;
 271         }
 272
 273         /**
 274          * Returns the options used by the core.
 275          *
 276          * @return The options of the core
 277          */
 278         public Preferences getPreferences() {
 279                 return preferences;
 280         }
 281
 282         /**
 283          * Returns the identity manager used by the core.
 284          *
 285          * @return The identity manager
 286          */
 287         public IdentityManager getIdentityManager() {
 288                 return identityManager;
 289         }
 290
 291         /**
 292          * Returns the update checker.
 293          *
 294          * @return The update checker
 295          */
 296         public UpdateChecker getUpdateChecker() {
 297                 return updateChecker;
 298         }
 299
 300         /**
 301          * Sets the FCP interface to use.
 302          *
 303          * @param fcpInterface
 304          *            The FCP interface to use
 305          */
 306         public void setFcpInterface(FcpInterface fcpInterface) {
 307                 this.fcpInterface = fcpInterface;
 308         }
 309
 310         /**
 311          * Returns the Sone rescuer for the given local Sone.
 312          *
 313          * @param sone
 314          *            The local Sone to get the rescuer for
 315          * @return The Sone rescuer for the given Sone
 316          */
 317         public SoneRescuer getSoneRescuer(Sone sone) {
 318                 checkNotNull(sone, "sone must not be null");
 319                 checkArgument(sone.isLocal(), "sone must be local");
 320                 synchronized (sones) {
 321                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 322                         if (soneRescuer == null) {
 323                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 324                                 soneRescuers.put(sone, soneRescuer);
 325                                 soneRescuer.start();
 326                         }
 327                         return soneRescuer;
 328                 }
 329         }
 330
 331         /**
 332          * Returns whether the given Sone is currently locked.
 333          *
 334          * @param sone
 335          *            The sone to check
 336          * @return {@code true} if the Sone is locked, {@code false} if it is not
 337          */
 338         public boolean isLocked(Sone sone) {
 339                 synchronized (lockedSones) {
 340                         return lockedSones.contains(sone);
 341                 }
 342         }
 343
 344         /**
 345          * {@inheritDocs}
 346          */
 347         @Override
 348         public Collection<Sone> getSones() {
 349                 return database.getSones();
 350         }
 351
 352         /**
 353          * Returns the Sone with the given ID, regardless whether it’s local or
 354          * remote.
 355          *
 356          * @param id
 357          *            The ID of the Sone to get
 358          * @return The Sone with the given ID, or {@code null} if there is no such
 359          *         Sone
 360          */
 361         @Override
 362         public Optional<Sone> getSone(String id) {
 363                 return database.getSone(id);
 364         }
 365
 366         /**
 367          * {@inheritDocs}
 368          */
 369         @Override
 370         public Collection<Sone> getLocalSones() {
 371                 return database.getLocalSones();
 372         }
 373
 374         /**
 375          * Returns the local Sone with the given ID, optionally creating a new Sone.
 376          *
 377          * @param id
 378          *            The ID of the Sone
 379          * @param create
 380          *            {@code true} to create a new Sone if none exists,
 381          *            {@code false} to return null if none exists
 382          * @return The Sone with the given ID, or {@code null}
 383          */
 384         public Sone getLocalSone(String id, boolean create) {
 385                 synchronized (sones) {
 386                         Sone sone = sones.get(id);
 387                         if ((sone == null) && create) {
 388                                 sone = new SoneImpl(id, true);
 389                                 sones.put(id, sone);
 390                         }
 391                         if ((sone != null) && !sone.isLocal()) {
 392                                 sone = new SoneImpl(id, true);
 393                                 sones.put(id, sone);
 394                         }
 395                         return sone;
 396                 }
 397         }
 398
 399         /**
 400          * {@inheritDocs}
 401          */
 402         @Override
 403         public Collection<Sone> getRemoteSones() {
 404                 return database.getRemoteSones();
 405         }
 406
 407         /**
 408          * Returns the remote Sone with the given ID.
 409          *
 410          * @param id
 411          *            The ID of the remote Sone to get
 412          * @param create
 413          *            {@code true} to always create a Sone, {@code false} to return
 414          *            {@code null} if no Sone with the given ID exists
 415          * @return The Sone with the given ID
 416          */
 417         public Sone getRemoteSone(String id, boolean create) {
 418                 synchronized (sones) {
 419                         Sone sone = sones.get(id);
 420                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 421                                 sone = new SoneImpl(id, false);
 422                                 sones.put(id, sone);
 423                         }
 424                         return sone;
 425                 }
 426         }
 427
 428         /**
 429          * Returns whether the given Sone has been modified.
 430          *
 431          * @param sone
 432          *            The Sone to check for modifications
 433          * @return {@code true} if a modification has been detected in the Sone,
 434          *         {@code false} otherwise
 435          */
 436         public boolean isModifiedSone(Sone sone) {
 437                 return soneInserters.containsKey(sone) && soneInserters.get(sone).isModified();
 438         }
 439
 440         /**
 441          * Returns the time when the given was first followed by any local Sone.
 442          *
 443          * @param sone
 444          *            The Sone to get the time for
 445          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 446          *         been followed, or {@link Long#MAX_VALUE}
 447          */
 448         public long getSoneFollowingTime(Sone sone) {
 449                 synchronized (soneFollowingTimes) {
 450                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 451                 }
 452         }
 453
 454         /**
 455          * Returns a post builder.
 456          *
 457          * @return A new post builder
 458          */
 459         public PostBuilder postBuilder() {
 460                 return database.newPostBuilder();
 461         }
 462
 463         /**
 464          * {@inheritDoc}
 465          */
 466         @Override
 467         public Optional<Post> getPost(String postId) {
 468                 return database.getPost(postId);
 469         }
 470
 471         /**
 472          * {@inheritDocs}
 473          */
 474         @Override
 475         public Collection<Post> getPosts(String soneId) {
 476                 return database.getPosts(soneId);
 477         }
 478
 479         /**
 480          * {@inheritDoc}
 481          */
 482         @Override
 483         public Collection<Post> getDirectedPosts(final String recipientId) {
 484                 checkNotNull(recipientId, "recipient must not be null");
 485                 return database.getDirectedPosts(recipientId);
 486         }
 487
 488         /**
 489          * Returns a post reply builder.
 490          *
 491          * @return A new post reply builder
 492          */
 493         public PostReplyBuilder postReplyBuilder() {
 494                 return database.newPostReplyBuilder();
 495         }
 496
 497         /**
 498          * {@inheritDoc}
 499          */
 500         @Override
 501         public Optional<PostReply> getPostReply(String replyId) {
 502                 return database.getPostReply(replyId);
 503         }
 504
 505         /**
 506          * {@inheritDoc}
 507          */
 508         @Override
 509         public List<PostReply> getReplies(final String postId) {
 510                 return database.getReplies(postId);
 511         }
 512
 513         /**
 514          * Returns all Sones that have liked the given post.
 515          *
 516          * @param post
 517          *            The post to get the liking Sones for
 518          * @return The Sones that like the given post
 519          */
 520         public Set<Sone> getLikes(Post post) {
 521                 Set<Sone> sones = new HashSet<Sone>();
 522                 for (Sone sone : getSones()) {
 523                         if (sone.getLikedPostIds().contains(post.getId())) {
 524                                 sones.add(sone);
 525                         }
 526                 }
 527                 return sones;
 528         }
 529
 530         /**
 531          * Returns all Sones that have liked the given reply.
 532          *
 533          * @param reply
 534          *            The reply to get the liking Sones for
 535          * @return The Sones that like the given reply
 536          */
 537         public Set<Sone> getLikes(PostReply reply) {
 538                 Set<Sone> sones = new HashSet<Sone>();
 539                 for (Sone sone : getSones()) {
 540                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 541                                 sones.add(sone);
 542                         }
 543                 }
 544                 return sones;
 545         }
 546
 547         /**
 548          * Returns whether the given post is bookmarked.
 549          *
 550          * @param post
 551          *            The post to check
 552          * @return {@code true} if the given post is bookmarked, {@code false}
 553          *         otherwise
 554          */
 555         public boolean isBookmarked(Post post) {
 556                 return isPostBookmarked(post.getId());
 557         }
 558
 559         /**
 560          * Returns whether the post with the given ID is bookmarked.
 561          *
 562          * @param id
 563          *            The ID of the post to check
 564          * @return {@code true} if the post with the given ID is bookmarked,
 565          *         {@code false} otherwise
 566          */
 567         public boolean isPostBookmarked(String id) {
 568                 synchronized (bookmarkedPosts) {
 569                         return bookmarkedPosts.contains(id);
 570                 }
 571         }
 572
 573         /**
 574          * Returns all currently known bookmarked posts.
 575          *
 576          * @return All bookmarked posts
 577          */
 578         public Set<Post> getBookmarkedPosts() {
 579                 Set<Post> posts = new HashSet<Post>();
 580                 synchronized (bookmarkedPosts) {
 581                         for (String bookmarkedPostId : bookmarkedPosts) {
 582                                 Optional<Post> post = getPost(bookmarkedPostId);
 583                                 if (post.isPresent()) {
 584                                         posts.add(post.get());
 585                                 }
 586                         }
 587                 }
 588                 return posts;
 589         }
 590
 591         public AlbumBuilder albumBuilder() {
 592                 return database.newAlbumBuilder();
 593         }
 594
 595         /**
 596          * Returns the album with the given ID, optionally creating a new album if
 597          * an album with the given ID can not be found.
 598          *
 599          * @param albumId
 600          *            The ID of the album
 601          * @return The album with the given ID, or {@code null} if no album with the
 602          *         given ID exists
 603          */
 604         public Album getAlbum(String albumId) {
 605                 return database.getAlbum(albumId).orNull();
 606         }
 607
 608         public ImageBuilder imageBuilder() {
 609                 return database.newImageBuilder();
 610         }
 611
 612         /**
 613          * Returns the image with the given ID, creating it if necessary.
 614          *
 615          * @param imageId
 616          *            The ID of the image
 617          * @return The image with the given ID
 618          */
 619         public Image getImage(String imageId) {
 620                 return getImage(imageId, true);
 621         }
 622
 623         /**
 624          * Returns the image with the given ID, optionally creating it if it does
 625          * not exist.
 626          *
 627          * @param imageId
 628          *            The ID of the image
 629          * @param create
 630          *            {@code true} to create an image if none exists with the given
 631          *            ID
 632          * @return The image with the given ID, or {@code null} if none exists and
 633          *         none was created
 634          */
 635         public Image getImage(String imageId, boolean create) {
 636                 Optional<Image> image = database.getImage(imageId);
 637                 if (image.isPresent()) {
 638                         return image.get();
 639                 }
 640                 if (!create) {
 641                         return null;
 642                 }
 643                 Image newImage = database.newImageBuilder().withId(imageId).build();
 644                 database.storeImage(newImage);
 645                 return newImage;
 646         }
 647
 648         /**
 649          * Returns the temporary image with the given ID.
 650          *
 651          * @param imageId
 652          *            The ID of the temporary image
 653          * @return The temporary image, or {@code null} if there is no temporary
 654          *         image with the given ID
 655          */
 656         public TemporaryImage getTemporaryImage(String imageId) {
 657                 synchronized (temporaryImages) {
 658                         return temporaryImages.get(imageId);
 659                 }
 660         }
 661
 662         //
 663         // ACTIONS
 664         //
 665
 666         /**
 667          * Locks the given Sone. A locked Sone will not be inserted by
 668          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 669          * again.
 670          *
 671          * @param sone
 672          *            The sone to lock
 673          */
 674         public void lockSone(Sone sone) {
 675                 synchronized (lockedSones) {
 676                         if (lockedSones.add(sone)) {
 677                                 eventBus.post(new SoneLockedEvent(sone));
 678                         }
 679                 }
 680         }
 681
 682         /**
 683          * Unlocks the given Sone.
 684          *
 685          * @see #lockSone(Sone)
 686          * @param sone
 687          *            The sone to unlock
 688          */
 689         public void unlockSone(Sone sone) {
 690                 synchronized (lockedSones) {
 691                         if (lockedSones.remove(sone)) {
 692                                 eventBus.post(new SoneUnlockedEvent(sone));
 693                         }
 694                 }
 695         }
 696
 697         /**
 698          * Adds a local Sone from the given own identity.
 699          *
 700          * @param ownIdentity
 701          *            The own identity to create a Sone from
 702          * @return The added (or already existing) Sone
 703          */
 704         public Sone addLocalSone(OwnIdentity ownIdentity) {
 705                 if (ownIdentity == null) {
 706                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 707                         return null;
 708                 }
 709                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 710                 synchronized (sones) {
 711                         final Sone sone;
 712                         try {
 713                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 714                         } catch (MalformedURLException mue1) {
 715                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 716                                 return null;
 717                         }
 718                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 719                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 720                         sone.setKnown(true);
 721                         /* TODO - load posts ’n stuff */
 722                         sones.put(ownIdentity.getId(), sone);
 723                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 724                         soneInserters.put(sone, soneInserter);
 725                         sone.setStatus(SoneStatus.idle);
 726                         loadSone(sone);
 727                         soneInserter.start();
 728                         return sone;
 729                 }
 730         }
 731
 732         /**
 733          * Creates a new Sone for the given own identity.
 734          *
 735          * @param ownIdentity
 736          *            The own identity to create a Sone for
 737          * @return The created Sone
 738          */
 739         public Sone createSone(OwnIdentity ownIdentity) {
 740                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 741                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 742                         return null;
 743                 }
 744                 Sone sone = addLocalSone(ownIdentity);
 745
 746                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 747                 touchConfiguration();
 748                 return sone;
 749         }
 750
 751         /**
 752          * Adds the Sone of the given identity.
 753          *
 754          * @param identity
 755          *            The identity whose Sone to add
 756          * @return The added or already existing Sone
 757          */
 758         public Sone addRemoteSone(Identity identity) {
 759                 if (identity == null) {
 760                         logger.log(Level.WARNING, "Given Identity is null!");
 761                         return null;
 762                 }
 763                 final Long latestEdition = tryParse(fromNullable(
 764                                 identity.getProperty("Sone.LatestEdition")).or("0"));
 765                 synchronized (sones) {
 766                         final Sone sone = getRemoteSone(identity.getId(), true);
 767                         if (sone.isLocal()) {
 768                                 return sone;
 769                         }
 770                         sone.setIdentity(identity);
 771                         boolean newSone = sone.getRequestUri() == null;
 772                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 773                         sone.setLatestEdition(latestEdition);
 774                         if (newSone) {
 775                                 synchronized (knownSones) {
 776                                         newSone = !knownSones.contains(sone.getId());
 777                                 }
 778                                 sone.setKnown(!newSone);
 779                                 if (newSone) {
 780                                         eventBus.post(new NewSoneFoundEvent(sone));
 781                                         for (Sone localSone : getLocalSones()) {
 782                                                 if (localSone.getOptions().isAutoFollow()) {
 783                                                         followSone(localSone, sone.getId());
 784                                                 }
 785                                         }
 786                                 }
 787                         }
 788                         soneDownloader.addSone(sone);
 789                         soneDownloaders.execute(soneDownloader.fetchSoneWithUriAction(sone));
 790                         return sone;
 791                 }
 792         }
 793
 794         /**
 795          * Lets the given local Sone follow the Sone with the given ID.
 796          *
 797          * @param sone
 798          *            The local Sone that should follow another Sone
 799          * @param soneId
 800          *            The ID of the Sone to follow
 801          */
 802         public void followSone(Sone sone, String soneId) {
 803                 checkNotNull(sone, "sone must not be null");
 804                 checkNotNull(soneId, "soneId must not be null");
 805                 sone.addFriend(soneId);
 806                 synchronized (soneFollowingTimes) {
 807                         if (!soneFollowingTimes.containsKey(soneId)) {
 808                                 long now = System.currentTimeMillis();
 809                                 soneFollowingTimes.put(soneId, now);
 810                                 Optional<Sone> followedSone = getSone(soneId);
 811                                 if (!followedSone.isPresent()) {
 812                                         return;
 813                                 }
 814                                 for (Post post : followedSone.get().getPosts()) {
 815                                         if (post.getTime() < now) {
 816                                                 markPostKnown(post);
 817                                         }
 818                                 }
 819                                 for (PostReply reply : followedSone.get().getReplies()) {
 820                                         if (reply.getTime() < now) {
 821                                                 markReplyKnown(reply);
 822                                         }
 823                                 }
 824                         }
 825                 }
 826                 touchConfiguration();
 827         }
 828
 829         /**
 830          * Lets the given local Sone unfollow the Sone with the given ID.
 831          *
 832          * @param sone
 833          *            The local Sone that should unfollow another Sone
 834          * @param soneId
 835          *            The ID of the Sone being unfollowed
 836          */
 837         public void unfollowSone(Sone sone, String soneId) {
 838                 checkNotNull(sone, "sone must not be null");
 839                 checkNotNull(soneId, "soneId must not be null");
 840                 sone.removeFriend(soneId);
 841                 boolean unfollowedSoneStillFollowed = false;
 842                 for (Sone localSone : getLocalSones()) {
 843                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 844                 }
 845                 if (!unfollowedSoneStillFollowed) {
 846                         synchronized (soneFollowingTimes) {
 847                                 soneFollowingTimes.remove(soneId);
 848                         }
 849                 }
 850                 touchConfiguration();
 851         }
 852
 853         /**
 854          * Sets the trust value of the given origin Sone for the target Sone.
 855          *
 856          * @param origin
 857          *            The origin Sone
 858          * @param target
 859          *            The target Sone
 860          * @param trustValue
 861          *            The trust value (from {@code -100} to {@code 100})
 862          */
 863         public void setTrust(Sone origin, Sone target, int trustValue) {
 864                 checkNotNull(origin, "origin must not be null");
 865                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 866                 checkNotNull(target, "target must not be null");
 867                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 868                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 869         }
 870
 871         /**
 872          * Removes any trust assignment for the given target Sone.
 873          *
 874          * @param origin
 875          *            The trust origin
 876          * @param target
 877          *            The trust target
 878          */
 879         public void removeTrust(Sone origin, Sone target) {
 880                 checkNotNull(origin, "origin must not be null");
 881                 checkNotNull(target, "target must not be null");
 882                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 883                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 884         }
 885
 886         /**
 887          * Assigns the configured positive trust value for the given target.
 888          *
 889          * @param origin
 890          *            The trust origin
 891          * @param target
 892          *            The trust target
 893          */
 894         public void trustSone(Sone origin, Sone target) {
 895                 setTrust(origin, target, preferences.getPositiveTrust());
 896         }
 897
 898         /**
 899          * Assigns the configured negative trust value for the given target.
 900          *
 901          * @param origin
 902          *            The trust origin
 903          * @param target
 904          *            The trust target
 905          */
 906         public void distrustSone(Sone origin, Sone target) {
 907                 setTrust(origin, target, preferences.getNegativeTrust());
 908         }
 909
 910         /**
 911          * Removes the trust assignment for the given target.
 912          *
 913          * @param origin
 914          *            The trust origin
 915          * @param target
 916          *            The trust target
 917          */
 918         public void untrustSone(Sone origin, Sone target) {
 919                 removeTrust(origin, target);
 920         }
 921
 922         /**
 923          * Updates the stored Sone with the given Sone.
 924          *
 925          * @param sone
 926          *            The updated Sone
 927          */
 928         public void updateSone(Sone sone) {
 929                 updateSone(sone, false);
 930         }
 931
 932         /**
 933          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 934          * {@code true}, an older Sone than the current Sone can be given to restore
 935          * an old state.
 936          *
 937          * @param sone
 938          *            The Sone to update
 939          * @param soneRescueMode
 940          *            {@code true} if the stored Sone should be updated regardless
 941          *            of the age of the given Sone
 942          */
 943         public void updateSone(final Sone sone, boolean soneRescueMode) {
 944                 Optional<Sone> storedSone = getSone(sone.getId());
 945                 if (storedSone.isPresent()) {
 946                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 947                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 948                                 return;
 949                         }
 950                         /* find removed posts. */
 951                         SoneChangeDetector soneChangeDetector = new SoneChangeDetector(storedSone.get());
 952                         soneChangeDetector.onNewPosts(new PostProcessor() {
 953                                 @Override
 954                                 public void processPost(Post post) {
 955                                         if (post.getTime() < getSoneFollowingTime(sone)) {
 956                                                 post.setKnown(true);
 957                                         } else if (!post.isKnown()) {
 958                                                 eventBus.post(new NewPostFoundEvent(post));
 959                                         }
 960                                 }
 961                         });
 962                         soneChangeDetector.onRemovedPosts(new PostProcessor() {
 963                                 @Override
 964                                 public void processPost(Post post) {
 965                                         eventBus.post(new PostRemovedEvent(post));
 966                                 }
 967                         });
 968                         soneChangeDetector.onNewPostReplies(new PostReplyProcessor() {
 969                                 @Override
 970                                 public void processPostReply(PostReply postReply) {
 971                                         if (postReply.getTime() < getSoneFollowingTime(sone)) {
 972                                                 postReply.setKnown(true);
 973                                         } else if (!postReply.isKnown()) {
 974                                                 eventBus.post(new NewPostReplyFoundEvent(postReply));
 975                                         }
 976                                 }
 977                         });
 978                         soneChangeDetector.onRemovedPostReplies(new PostReplyProcessor() {
 979                                 @Override
 980                                 public void processPostReply(PostReply postReply) {
 981                                         eventBus.post(new PostReplyRemovedEvent(postReply));
 982                                 }
 983                         });
 984                         soneChangeDetector.detectChanges(sone);
 985                         database.storeSone(sone);
 986                         synchronized (sones) {
 987                                 sone.setOptions(storedSone.get().getOptions());
 988                                 sone.setKnown(storedSone.get().isKnown());
 989                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 990                                 if (sone.isLocal()) {
 991                                         soneInserters.get(storedSone.get()).setSone(sone);
 992                                         touchConfiguration();
 993                                 }
 994                                 sones.put(sone.getId(), sone);
 995                         }
 996                 }
 997         }
 998
 999         /**
1000          * Deletes the given Sone. This will remove the Sone from the
1001          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1002          * remove the context from its identity.
1003          *
1004          * @param sone
1005          *            The Sone to delete
1006          */
1007         public void deleteSone(Sone sone) {
1008                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1009                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1010                         return;
1011                 }
1012                 synchronized (sones) {
1013                         if (!getLocalSones().contains(sone)) {
1014                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1015                                 return;
1016                         }
1017                         sones.remove(sone.getId());
1018                         SoneInserter soneInserter = soneInserters.remove(sone);
1019                         soneInserter.stop();
1020                 }
1021                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1022                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1023                 try {
1024                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1025                 } catch (ConfigurationException ce1) {
1026                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1027                 }
1028         }
1029
1030         /**
1031          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1032          * known} before, a {@link MarkSoneKnownEvent} is fired.
1033          *
1034          * @param sone
1035          *            The Sone to mark as known
1036          */
1037         public void markSoneKnown(Sone sone) {
1038                 if (!sone.isKnown()) {
1039                         sone.setKnown(true);
1040                         synchronized (knownSones) {
1041                                 knownSones.add(sone.getId());
1042                         }
1043                         eventBus.post(new MarkSoneKnownEvent(sone));
1044                         touchConfiguration();
1045                 }
1046         }
1047
1048         /**
1049          * Loads and updates the given Sone from the configuration. If any error is
1050          * encountered, loading is aborted and the given Sone is not changed.
1051          *
1052          * @param sone
1053          *            The Sone to load and update
1054          */
1055         public void loadSone(Sone sone) {
1056                 if (!sone.isLocal()) {
1057                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1058                         return;
1059                 }
1060                 logger.info(String.format("Loading local Sone: %s", sone));
1061
1062                 /* load Sone. */
1063                 String sonePrefix = "Sone/" + sone.getId();
1064                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1065                 if (soneTime == null) {
1066                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1067                         return;
1068                 }
1069                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1070
1071                 /* load profile. */
1072                 ConfigurationSoneParser configurationSoneParser = new ConfigurationSoneParser(configuration, sone);
1073                 Profile profile = configurationSoneParser.parseProfile();
1074
1075                 /* load posts. */
1076                 Collection<Post> posts;
1077                 try {
1078                         posts = configurationSoneParser.parsePosts(database);
1079                 } catch (InvalidPostFound ipf) {
1080                         logger.log(Level.WARNING, "Invalid post found, aborting load!");
1081                         return;
1082                 }
1083
1084                 /* load replies. */
1085                 Collection<PostReply> replies;
1086                 try {
1087                         replies = configurationSoneParser.parsePostReplies(database);
1088                 } catch (InvalidPostReplyFound iprf) {
1089                         logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1090                         return;
1091                 }
1092
1093                 /* load post likes. */
1094                 Set<String> likedPostIds =
1095                                 configurationSoneParser.parseLikedPostIds();
1096
1097                 /* load reply likes. */
1098                 Set<String> likedReplyIds =
1099                                 configurationSoneParser.parseLikedPostReplyIds();
1100
1101                 /* load friends. */
1102                 Set<String> friends = configurationSoneParser.parseFriends();
1103
1104                 /* load albums. */
1105                 List<Album> topLevelAlbums;
1106                 try {
1107                         topLevelAlbums =
1108                                         configurationSoneParser.parseTopLevelAlbums(database);
1109                 } catch (InvalidAlbumFound iaf) {
1110                         logger.log(Level.WARNING, "Invalid album found, aborting load!");
1111                         return;
1112                 } catch (InvalidParentAlbumFound ipaf) {
1113                         logger.log(Level.WARNING, format("Invalid parent album ID: %s",
1114                                         ipaf.getAlbumParentId()));
1115                         return;
1116                 }
1117
1118                 /* load images. */
1119                 try {
1120                         configurationSoneParser.parseImages(database);
1121                 } catch (InvalidImageFound iif) {
1122                         logger.log(WARNING, "Invalid image found, aborting load!");
1123                         return;
1124                 } catch (InvalidParentAlbumFound ipaf) {
1125                         logger.log(Level.WARNING,
1126                                         format("Invalid album image (%s) encountered, aborting load!",
1127                                                         ipaf.getAlbumParentId()));
1128                         return;
1129                 }
1130
1131                 /* load avatar. */
1132                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1133                 if (avatarId != null) {
1134                         final Map<String, Image> images =
1135                                         configurationSoneParser.getImages();
1136                         profile.setAvatar(images.get(avatarId));
1137                 }
1138
1139                 /* load options. */
1140                 sone.getOptions().setAutoFollow(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1141                 sone.getOptions().setSoneInsertNotificationEnabled(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1142                 sone.getOptions().setShowNewSoneNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1143                 sone.getOptions().setShowNewPostNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1144                 sone.getOptions().setShowNewReplyNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1145                 sone.getOptions().setShowCustomAvatars(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1146
1147                 /* if we’re still here, Sone was loaded successfully. */
1148                 synchronized (sone) {
1149                         sone.setTime(soneTime);
1150                         sone.setProfile(profile);
1151                         sone.setPosts(posts);
1152                         sone.setReplies(replies);
1153                         sone.setLikePostIds(likedPostIds);
1154                         sone.setLikeReplyIds(likedReplyIds);
1155                         for (String friendId : friends) {
1156                                 followSone(sone, friendId);
1157                         }
1158                         for (Album album : sone.getRootAlbum().getAlbums()) {
1159                                 sone.getRootAlbum().removeAlbum(album);
1160                         }
1161                         for (Album album : topLevelAlbums) {
1162                                 sone.getRootAlbum().addAlbum(album);
1163                         }
1164                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1165                         for (Album album : toAllAlbums.apply(sone)) {
1166                                 database.storeAlbum(album);
1167                                 for (Image image : album.getImages()) {
1168                                         database.storeImage(image);
1169                                 }
1170                         }
1171                 }
1172                 synchronized (knownSones) {
1173                         for (String friend : friends) {
1174                                 knownSones.add(friend);
1175                         }
1176                 }
1177                 database.storePosts(sone, posts);
1178                 for (Post post : posts) {
1179                         post.setKnown(true);
1180                 }
1181                 database.storePostReplies(sone, replies);
1182                 for (PostReply reply : replies) {
1183                         reply.setKnown(true);
1184                 }
1185
1186                 logger.info(String.format("Sone loaded successfully: %s", sone));
1187         }
1188
1189         /**
1190          * Creates a new post.
1191          *
1192          * @param sone
1193          *            The Sone that creates the post
1194          * @param recipient
1195          *            The recipient Sone, or {@code null} if this post does not have
1196          *            a recipient
1197          * @param text
1198          *            The text of the post
1199          * @return The created post
1200          */
1201         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1202                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1203         }
1204
1205         /**
1206          * Creates a new post.
1207          *
1208          * @param sone
1209          *            The Sone that creates the post
1210          * @param recipient
1211          *            The recipient Sone, or {@code null} if this post does not have
1212          *            a recipient
1213          * @param time
1214          *            The time of the post
1215          * @param text
1216          *            The text of the post
1217          * @return The created post
1218          */
1219         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1220                 checkNotNull(text, "text must not be null");
1221                 checkArgument(text.trim().length() > 0, "text must not be empty");
1222                 if (!sone.isLocal()) {
1223                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1224                         return null;
1225                 }
1226                 PostBuilder postBuilder = database.newPostBuilder();
1227                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1228                 if (recipient.isPresent()) {
1229                         postBuilder.to(recipient.get().getId());
1230                 }
1231                 final Post post = postBuilder.build();
1232                 database.storePost(post);
1233                 eventBus.post(new NewPostFoundEvent(post));
1234                 sone.addPost(post);
1235                 touchConfiguration();
1236                 localElementTicker.schedule(new MarkPostKnown(post), 10, TimeUnit.SECONDS);
1237                 return post;
1238         }
1239
1240         /**
1241          * Deletes the given post.
1242          *
1243          * @param post
1244          *            The post to delete
1245          */
1246         public void deletePost(Post post) {
1247                 if (!post.getSone().isLocal()) {
1248                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1249                         return;
1250                 }
1251                 database.removePost(post);
1252                 eventBus.post(new PostRemovedEvent(post));
1253                 markPostKnown(post);
1254                 touchConfiguration();
1255         }
1256
1257         /**
1258          * Marks the given post as known, if it is currently not a known post
1259          * (according to {@link Post#isKnown()}).
1260          *
1261          * @param post
1262          *            The post to mark as known
1263          */
1264         public void markPostKnown(Post post) {
1265                 post.setKnown(true);
1266                 eventBus.post(new MarkPostKnownEvent(post));
1267                 touchConfiguration();
1268                 for (PostReply reply : getReplies(post.getId())) {
1269                         markReplyKnown(reply);
1270                 }
1271         }
1272
1273         /**
1274          * Bookmarks the post with the given ID.
1275          *
1276          * @param id
1277          *            The ID of the post to bookmark
1278          */
1279         public void bookmarkPost(String id) {
1280                 synchronized (bookmarkedPosts) {
1281                         bookmarkedPosts.add(id);
1282                 }
1283         }
1284
1285         /**
1286          * Removes the given post from the bookmarks.
1287          *
1288          * @param post
1289          *            The post to unbookmark
1290          */
1291         public void unbookmark(Post post) {
1292                 unbookmarkPost(post.getId());
1293         }
1294
1295         /**
1296          * Removes the post with the given ID from the bookmarks.
1297          *
1298          * @param id
1299          *            The ID of the post to unbookmark
1300          */
1301         public void unbookmarkPost(String id) {
1302                 synchronized (bookmarkedPosts) {
1303                         bookmarkedPosts.remove(id);
1304                 }
1305         }
1306
1307         /**
1308          * Creates a new reply.
1309          *
1310          * @param sone
1311          *            The Sone that creates the reply
1312          * @param post
1313          *            The post that this reply refers to
1314          * @param text
1315          *            The text of the reply
1316          * @return The created reply
1317          */
1318         public PostReply createReply(Sone sone, Post post, String text) {
1319                 checkNotNull(text, "text must not be null");
1320                 checkArgument(text.trim().length() > 0, "text must not be empty");
1321                 if (!sone.isLocal()) {
1322                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1323                         return null;
1324                 }
1325                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1326                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1327                 final PostReply reply = postReplyBuilder.build();
1328                 database.storePostReply(reply);
1329                 eventBus.post(new NewPostReplyFoundEvent(reply));
1330                 sone.addReply(reply);
1331                 touchConfiguration();
1332                 localElementTicker.schedule(new MarkReplyKnown(reply), 10, TimeUnit.SECONDS);
1333                 return reply;
1334         }
1335
1336         /**
1337          * Deletes the given reply.
1338          *
1339          * @param reply
1340          *            The reply to delete
1341          */
1342         public void deleteReply(PostReply reply) {
1343                 Sone sone = reply.getSone();
1344                 if (!sone.isLocal()) {
1345                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1346                         return;
1347                 }
1348                 database.removePostReply(reply);
1349                 markReplyKnown(reply);
1350                 sone.removeReply(reply);
1351                 touchConfiguration();
1352         }
1353
1354         /**
1355          * Marks the given reply as known, if it is currently not a known reply
1356          * (according to {@link Reply#isKnown()}).
1357          *
1358          * @param reply
1359          *            The reply to mark as known
1360          */
1361         public void markReplyKnown(PostReply reply) {
1362                 boolean previouslyKnown = reply.isKnown();
1363                 reply.setKnown(true);
1364                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1365                 if (!previouslyKnown) {
1366                         touchConfiguration();
1367                 }
1368         }
1369
1370         /**
1371          * Creates a new album for the given Sone.
1372          *
1373          * @param sone
1374          *            The Sone to create the album for
1375          * @param parent
1376          *            The parent of the album (may be {@code null} to create a
1377          *            top-level album)
1378          * @return The new album
1379          */
1380         public Album createAlbum(Sone sone, Album parent) {
1381                 Album album = database.newAlbumBuilder().randomId().by(sone).build();
1382                 database.storeAlbum(album);
1383                 parent.addAlbum(album);
1384                 return album;
1385         }
1386
1387         /**
1388          * Deletes the given album. The owner of the album has to be a local Sone,
1389          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1390          *
1391          * @param album
1392          *            The album to remove
1393          */
1394         public void deleteAlbum(Album album) {
1395                 checkNotNull(album, "album must not be null");
1396                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1397                 if (!album.isEmpty()) {
1398                         return;
1399                 }
1400                 album.getParent().removeAlbum(album);
1401                 database.removeAlbum(album);
1402                 touchConfiguration();
1403         }
1404
1405         /**
1406          * Creates a new image.
1407          *
1408          * @param sone
1409          *            The Sone creating the image
1410          * @param album
1411          *            The album the image will be inserted into
1412          * @param temporaryImage
1413          *            The temporary image to create the image from
1414          * @return The newly created image
1415          */
1416         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1417                 checkNotNull(sone, "sone must not be null");
1418                 checkNotNull(album, "album must not be null");
1419                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1420                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1421                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1422                 Image image = database.newImageBuilder().withId(temporaryImage.getId()).build().modify().setSone(sone).setCreationTime(System.currentTimeMillis()).update();
1423                 album.addImage(image);
1424                 database.storeImage(image);
1425                 imageInserter.insertImage(temporaryImage, image);
1426                 return image;
1427         }
1428
1429         /**
1430          * Deletes the given image. This method will also delete a matching
1431          * temporary image.
1432          *
1433          * @see #deleteTemporaryImage(String)
1434          * @param image
1435          *            The image to delete
1436          */
1437         public void deleteImage(Image image) {
1438                 checkNotNull(image, "image must not be null");
1439                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1440                 deleteTemporaryImage(image.getId());
1441                 image.getAlbum().removeImage(image);
1442                 database.removeImage(image);
1443                 touchConfiguration();
1444         }
1445
1446         /**
1447          * Creates a new temporary image.
1448          *
1449          * @param mimeType
1450          *            The MIME type of the temporary image
1451          * @param imageData
1452          *            The encoded data of the image
1453          * @return The temporary image
1454          */
1455         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1456                 TemporaryImage temporaryImage = new TemporaryImage();
1457                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1458                 synchronized (temporaryImages) {
1459                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1460                 }
1461                 return temporaryImage;
1462         }
1463
1464         /**
1465          * Deletes the temporary image with the given ID.
1466          *
1467          * @param imageId
1468          *            The ID of the temporary image to delete
1469          */
1470         public void deleteTemporaryImage(String imageId) {
1471                 checkNotNull(imageId, "imageId must not be null");
1472                 synchronized (temporaryImages) {
1473                         temporaryImages.remove(imageId);
1474                 }
1475                 Image image = getImage(imageId, false);
1476                 if (image != null) {
1477                         imageInserter.cancelImageInsert(image);
1478                 }
1479         }
1480
1481         /**
1482          * Notifies the core that the configuration, either of the core or of a
1483          * single local Sone, has changed, and that the configuration should be
1484          * saved.
1485          */
1486         public void touchConfiguration() {
1487                 lastConfigurationUpdate = System.currentTimeMillis();
1488         }
1489
1490         //
1491         // SERVICE METHODS
1492         //
1493
1494         /**
1495          * Starts the core.
1496          */
1497         @Override
1498         public void serviceStart() {
1499                 loadConfiguration();
1500                 updateChecker.start();
1501                 identityManager.start();
1502                 webOfTrustUpdater.init();
1503                 webOfTrustUpdater.start();
1504                 database.start();
1505         }
1506
1507         /**
1508          * {@inheritDoc}
1509          */
1510         @Override
1511         public void serviceRun() {
1512                 long lastSaved = System.currentTimeMillis();
1513                 while (!shouldStop()) {
1514                         sleep(1000);
1515                         long now = System.currentTimeMillis();
1516                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1517                                 for (Sone localSone : getLocalSones()) {
1518                                         saveSone(localSone);
1519                                 }
1520                                 saveConfiguration();
1521                                 lastSaved = now;
1522                         }
1523                 }
1524         }
1525
1526         /**
1527          * Stops the core.
1528          */
1529         @Override
1530         public void serviceStop() {
1531                 localElementTicker.shutdownNow();
1532                 synchronized (sones) {
1533                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1534                                 soneInserter.getValue().stop();
1535                                 saveSone(getLocalSone(soneInserter.getKey().getId(), false));
1536                         }
1537                 }
1538                 saveConfiguration();
1539                 database.stop();
1540                 webOfTrustUpdater.stop();
1541                 updateChecker.stop();
1542                 soneDownloader.stop();
1543                 soneDownloaders.shutdown();
1544                 identityManager.stop();
1545         }
1546
1547         //
1548         // PRIVATE METHODS
1549         //
1550
1551         /**
1552          * Saves the given Sone. This will persist all local settings for the given
1553          * Sone, such as the friends list and similar, private options.
1554          *
1555          * @param sone
1556          *            The Sone to save
1557          */
1558         private synchronized void saveSone(Sone sone) {
1559                 if (!sone.isLocal()) {
1560                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1561                         return;
1562                 }
1563                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1564                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1565                         return;
1566                 }
1567
1568                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1569                 try {
1570                         /* save Sone into configuration. */
1571                         String sonePrefix = "Sone/" + sone.getId();
1572                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1573                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1574
1575                         /* save profile. */
1576                         Profile profile = sone.getProfile();
1577                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1578                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1579                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1580                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1581                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1582                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1583                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1584
1585                         /* save profile fields. */
1586                         int fieldCounter = 0;
1587                         for (Field profileField : profile.getFields()) {
1588                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1589                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1590                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1591                         }
1592                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1593
1594                         /* save posts. */
1595                         int postCounter = 0;
1596                         for (Post post : sone.getPosts()) {
1597                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1598                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1599                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1600                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1601                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1602                         }
1603                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1604
1605                         /* save replies. */
1606                         int replyCounter = 0;
1607                         for (PostReply reply : sone.getReplies()) {
1608                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1609                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1610                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1611                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1612                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1613                         }
1614                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1615
1616                         /* save post likes. */
1617                         int postLikeCounter = 0;
1618                         for (String postId : sone.getLikedPostIds()) {
1619                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1620                         }
1621                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1622
1623                         /* save reply likes. */
1624                         int replyLikeCounter = 0;
1625                         for (String replyId : sone.getLikedReplyIds()) {
1626                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1627                         }
1628                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1629
1630                         /* save friends. */
1631                         int friendCounter = 0;
1632                         for (String friendId : sone.getFriends()) {
1633                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1634                         }
1635                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1636
1637                         /* save albums. first, collect in a flat structure, top-level first. */
1638                         List<Album> albums = FluentIterable.from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1639
1640                         int albumCounter = 0;
1641                         for (Album album : albums) {
1642                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1643                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1644                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1645                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1646                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1647                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1648                         }
1649                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1650
1651                         /* save images. */
1652                         int imageCounter = 0;
1653                         for (Album album : albums) {
1654                                 for (Image image : album.getImages()) {
1655                                         if (!image.isInserted()) {
1656                                                 continue;
1657                                         }
1658                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1659                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1660                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1661                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1662                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1663                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1664                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1665                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1666                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1667                                 }
1668                         }
1669                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1670
1671                         /* save options. */
1672                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().isAutoFollow());
1673                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().isSoneInsertNotificationEnabled());
1674                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().isShowNewSoneNotifications());
1675                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().isShowNewPostNotifications());
1676                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().isShowNewReplyNotifications());
1677                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().getShowCustomAvatars().name());
1678
1679                         configuration.save();
1680
1681                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1682
1683                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1684                 } catch (ConfigurationException ce1) {
1685                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1686                 }
1687         }
1688
1689         /**
1690          * Saves the current options.
1691          */
1692         private void saveConfiguration() {
1693                 synchronized (configuration) {
1694                         if (storingConfiguration) {
1695                                 logger.log(Level.FINE, "Already storing configuration…");
1696                                 return;
1697                         }
1698                         storingConfiguration = true;
1699                 }
1700
1701                 /* store the options first. */
1702                 try {
1703                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1704                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1705                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1706                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1707                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1708                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1709                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1710                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1711                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1712                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1713                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1714                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1715
1716                         /* save known Sones. */
1717                         int soneCounter = 0;
1718                         synchronized (knownSones) {
1719                                 for (String knownSoneId : knownSones) {
1720                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1721                                 }
1722                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1723                         }
1724
1725                         /* save Sone following times. */
1726                         soneCounter = 0;
1727                         synchronized (soneFollowingTimes) {
1728                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1729                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1730                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1731                                         ++soneCounter;
1732                                 }
1733                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1734                         }
1735
1736                         /* save known posts. */
1737                         database.save();
1738
1739                         /* save bookmarked posts. */
1740                         int bookmarkedPostCounter = 0;
1741                         synchronized (bookmarkedPosts) {
1742                                 for (String bookmarkedPostId : bookmarkedPosts) {
1743                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1744                                 }
1745                         }
1746                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1747
1748                         /* now save it. */
1749                         configuration.save();
1750
1751                 } catch (ConfigurationException ce1) {
1752                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1753                 } catch (DatabaseException de1) {
1754                         logger.log(Level.SEVERE, "Could not save database!", de1);
1755                 } finally {
1756                         synchronized (configuration) {
1757                                 storingConfiguration = false;
1758                         }
1759                 }
1760         }
1761
1762         /**
1763          * Loads the configuration.
1764          */
1765         private void loadConfiguration() {
1766                 /* create options. */
1767                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new SetInsertionDelay()));
1768                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1769                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1770                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1771                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1772                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1773                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1774                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1775                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1776                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, fcpInterface.new SetActive()));
1777                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, fcpInterface.new SetFullAccessRequired()));
1778
1779                 loadConfigurationValue("InsertionDelay");
1780                 loadConfigurationValue("PostsPerPage");
1781                 loadConfigurationValue("ImagesPerPage");
1782                 loadConfigurationValue("CharactersPerPost");
1783                 loadConfigurationValue("PostCutOffLength");
1784                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1785                 loadConfigurationValue("PositiveTrust");
1786                 loadConfigurationValue("NegativeTrust");
1787                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1788                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1789                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1790
1791                 /* load known Sones. */
1792                 int soneCounter = 0;
1793                 while (true) {
1794                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1795                         if (knownSoneId == null) {
1796                                 break;
1797                         }
1798                         synchronized (knownSones) {
1799                                 knownSones.add(knownSoneId);
1800                         }
1801                 }
1802
1803                 /* load Sone following times. */
1804                 soneCounter = 0;
1805                 while (true) {
1806                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1807                         if (soneId == null) {
1808                                 break;
1809                         }
1810                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1811                         synchronized (soneFollowingTimes) {
1812                                 soneFollowingTimes.put(soneId, time);
1813                         }
1814                         ++soneCounter;
1815                 }
1816
1817                 /* load bookmarked posts. */
1818                 int bookmarkedPostCounter = 0;
1819                 while (true) {
1820                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1821                         if (bookmarkedPostId == null) {
1822                                 break;
1823                         }
1824                         synchronized (bookmarkedPosts) {
1825                                 bookmarkedPosts.add(bookmarkedPostId);
1826                         }
1827                 }
1828
1829         }
1830
1831         /**
1832          * Loads an {@link Integer} configuration value for the option with the
1833          * given name, logging validation failures.
1834          *
1835          * @param optionName
1836          *            The name of the option to load
1837          */
1838         private void loadConfigurationValue(String optionName) {
1839                 try {
1840                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1841                 } catch (IllegalArgumentException iae1) {
1842                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1843                 }
1844         }
1845
1846         /**
1847          * Notifies the core that a new {@link OwnIdentity} was added.
1848          *
1849          * @param ownIdentityAddedEvent
1850          *            The event
1851          */
1852         @Subscribe
1853         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1854                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1855                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1856                 if (ownIdentity.hasContext("Sone")) {
1857                         addLocalSone(ownIdentity);
1858                 }
1859         }
1860
1861         /**
1862          * Notifies the core that an {@link OwnIdentity} was removed.
1863          *
1864          * @param ownIdentityRemovedEvent
1865          *            The event
1866          */
1867         @Subscribe
1868         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1869                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1870                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1871                 trustedIdentities.removeAll(ownIdentity);
1872         }
1873
1874         /**
1875          * Notifies the core that a new {@link Identity} was added.
1876          *
1877          * @param identityAddedEvent
1878          *            The event
1879          */
1880         @Subscribe
1881         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1882                 Identity identity = identityAddedEvent.identity();
1883                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1884                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1885                 addRemoteSone(identity);
1886         }
1887
1888         /**
1889          * Notifies the core that an {@link Identity} was updated.
1890          *
1891          * @param identityUpdatedEvent
1892          *            The event
1893          */
1894         @Subscribe
1895         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1896                 Identity identity = identityUpdatedEvent.identity();
1897                 final Sone sone = getRemoteSone(identity.getId(), false);
1898                 if (sone.isLocal()) {
1899                         return;
1900                 }
1901                 sone.setIdentity(identity);
1902                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
1903                 soneDownloader.addSone(sone);
1904                 soneDownloaders.execute(soneDownloader.fetchSoneAction(sone));
1905         }
1906
1907         /**
1908          * Notifies the core that an {@link Identity} was removed.
1909          *
1910          * @param identityRemovedEvent
1911          *            The event
1912          */
1913         @Subscribe
1914         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1915                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1916                 Identity identity = identityRemovedEvent.identity();
1917                 trustedIdentities.remove(ownIdentity, identity);
1918                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1919                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1920                                 continue;
1921                         }
1922                         if (trustedIdentity.getValue().contains(identity)) {
1923                                 return;
1924                         }
1925                 }
1926                 Optional<Sone> sone = getSone(identity.getId());
1927                 if (!sone.isPresent()) {
1928                         /* TODO - we don’t have the Sone anymore. should this happen? */
1929                         return;
1930                 }
1931                 database.removePosts(sone.get());
1932                 for (Post post : sone.get().getPosts()) {
1933                         eventBus.post(new PostRemovedEvent(post));
1934                 }
1935                 database.removePostReplies(sone.get());
1936                 for (PostReply reply : sone.get().getReplies()) {
1937                         eventBus.post(new PostReplyRemovedEvent(reply));
1938                 }
1939                 synchronized (sones) {
1940                         sones.remove(identity.getId());
1941                 }
1942                 eventBus.post(new SoneRemovedEvent(sone.get()));
1943         }
1944
1945         /**
1946          * Deletes the temporary image.
1947          *
1948          * @param imageInsertFinishedEvent
1949          *            The event
1950          */
1951         @Subscribe
1952         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1953                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1954                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1955                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1956                 touchConfiguration();
1957         }
1958
1959         @VisibleForTesting
1960         class MarkPostKnown implements Runnable {
1961
1962                 private final Post post;
1963
1964                 public MarkPostKnown(Post post) {
1965                         this.post = post;
1966                 }
1967
1968                 @Override
1969                 public void run() {
1970                         markPostKnown(post);
1971                 }
1972
1973         }
1974
1975         @VisibleForTesting
1976         class MarkReplyKnown implements Runnable {
1977
1978                 private final PostReply postReply;
1979
1980                 public MarkReplyKnown(PostReply postReply) {
1981                         this.postReply = postReply;
1982                 }
1983
1984                 @Override
1985                 public void run() {
1986                         markReplyKnown(postReply);
1987                 }
1988
1989         }
1990
1991 }