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