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