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 import static net.pterodactylus.sone.data.Sone.TO_FREENET_URI;
  28
  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.Modifier.ReplyUpdated;
  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.SoneBuilder.SoneCreated;
  78 import net.pterodactylus.sone.database.SoneProvider;
  79 import net.pterodactylus.sone.fcp.FcpInterface;
  80 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  81 import net.pterodactylus.sone.freenet.wot.Identity;
  82 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  83 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  84 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  85 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  86 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  87 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  88 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  89 import net.pterodactylus.sone.main.SonePlugin;
  90 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  91 import net.pterodactylus.util.config.Configuration;
  92 import net.pterodactylus.util.config.ConfigurationException;
  93 import net.pterodactylus.util.logging.Logging;
  94 import net.pterodactylus.util.number.Numbers;
  95 import net.pterodactylus.util.service.AbstractService;
  96 import net.pterodactylus.util.thread.NamedThreadFactory;
  97
  98 import com.google.common.base.Function;
  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 Function<String, Optional<Sone>> getSone() {
 331                 return database.getSone();
 332         }
 333
 334         @Override
 335         public Optional<Sone> getSone(String id) {
 336                 synchronized (sones) {
 337                         return Optional.fromNullable(sones.get(id));
 338                 }
 339         }
 340
 341         @Override
 342         public Collection<Sone> getLocalSones() {
 343                 synchronized (sones) {
 344                         return from(sones.values()).filter(new Predicate<Sone>() {
 345
 346                                 @Override
 347                                 public boolean apply(Sone sone) {
 348                                         return sone.isLocal();
 349                                 }
 350                         }).toSet();
 351                 }
 352         }
 353
 354         /**
 355          * Returns the local Sone with the given ID, optionally creating a new Sone.
 356          *
 357          * @param id
 358          *              The ID of the Sone
 359          * @return The Sone with the given ID, or {@code null}
 360          */
 361         public Optional<Sone> getLocalSone(String id) {
 362                 return from(database.getSone(id).asSet()).firstMatch(LOCAL_SONE_FILTER);
 363         }
 364
 365         @Override
 366         public Collection<Sone> getRemoteSones() {
 367                 synchronized (sones) {
 368                         return from(sones.values()).filter(new Predicate<Sone>() {
 369
 370                                 @Override
 371                                 public boolean apply(Sone sone) {
 372                                         return !sone.isLocal();
 373                                 }
 374                         }).toSet();
 375                 }
 376         }
 377
 378         /**
 379          * Returns the remote Sone with the given ID.
 380          *
 381          * @param id
 382          *              The ID of the remote Sone to get
 383          * @return The Sone with the given ID
 384          */
 385         public Optional<Sone> getRemoteSone(String id) {
 386                 return from(database.getSone(id).asSet()).firstMatch(not(LOCAL_SONE_FILTER));
 387         }
 388
 389         /**
 390          * Returns whether the given Sone has been modified.
 391          *
 392          * @param sone
 393          *              The Sone to check for modifications
 394          * @return {@code true} if a modification has been detected in the Sone, {@code
 395          *         false} otherwise
 396          */
 397         public boolean isModifiedSone(Sone sone) {
 398                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 399         }
 400
 401         /**
 402          * Returns the time when the given was first followed by any local Sone.
 403          *
 404          * @param sone
 405          *              The Sone to get the time for
 406          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first been
 407          *         followed, or {@link Long#MAX_VALUE}
 408          */
 409         public long getSoneFollowingTime(Sone sone) {
 410                 synchronized (soneFollowingTimes) {
 411                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 412                 }
 413         }
 414
 415         /**
 416          * Returns all Sones that have liked the given post.
 417          *
 418          * @param post
 419          *              The post to get the liking Sones for
 420          * @return The Sones that like the given post
 421          */
 422         public Set<Sone> getLikes(Post post) {
 423                 Set<Sone> sones = new HashSet<Sone>();
 424                 for (Sone sone : getSones()) {
 425                         if (sone.getLikedPostIds().contains(post.getId())) {
 426                                 sones.add(sone);
 427                         }
 428                 }
 429                 return sones;
 430         }
 431
 432         /**
 433          * Returns all Sones that have liked the given reply.
 434          *
 435          * @param reply
 436          *              The reply to get the liking Sones for
 437          * @return The Sones that like the given reply
 438          */
 439         public Set<Sone> getLikes(PostReply reply) {
 440                 Set<Sone> sones = new HashSet<Sone>();
 441                 for (Sone sone : getSones()) {
 442                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 443                                 sones.add(sone);
 444                         }
 445                 }
 446                 return sones;
 447         }
 448
 449         /**
 450          * Returns whether the given post is bookmarked.
 451          *
 452          * @param post
 453          *              The post to check
 454          * @return {@code true} if the given post is bookmarked, {@code false}
 455          *         otherwise
 456          */
 457         public boolean isBookmarked(Post post) {
 458                 return isPostBookmarked(post.getId());
 459         }
 460
 461         /**
 462          * Returns whether the post with the given ID is bookmarked.
 463          *
 464          * @param id
 465          *              The ID of the post to check
 466          * @return {@code true} if the post with the given ID is bookmarked, {@code
 467          *         false} otherwise
 468          */
 469         public boolean isPostBookmarked(String id) {
 470                 synchronized (bookmarkedPosts) {
 471                         return bookmarkedPosts.contains(id);
 472                 }
 473         }
 474
 475         /**
 476          * Returns all currently known bookmarked posts.
 477          *
 478          * @return All bookmarked posts
 479          */
 480         public Set<Post> getBookmarkedPosts() {
 481                 Set<Post> posts = new HashSet<Post>();
 482                 synchronized (bookmarkedPosts) {
 483                         for (String bookmarkedPostId : bookmarkedPosts) {
 484                                 Optional<Post> post = database.getPost(bookmarkedPostId);
 485                                 if (post.isPresent()) {
 486                                         posts.add(post.get());
 487                                 }
 488                         }
 489                 }
 490                 return posts;
 491         }
 492
 493         public Optional<Album> getAlbum(String albumId) {
 494                 return database.getAlbum(albumId);
 495         }
 496
 497         public Optional<Image> getImage(String imageId) {
 498                 return database.getImage(imageId);
 499         }
 500
 501         /**
 502          * Returns the temporary image with the given ID.
 503          *
 504          * @param imageId
 505          *              The ID of the temporary image
 506          * @return The temporary image, or {@code null} if there is no temporary image
 507          *         with the given ID
 508          */
 509         public TemporaryImage getTemporaryImage(String imageId) {
 510                 synchronized (temporaryImages) {
 511                         return temporaryImages.get(imageId);
 512                 }
 513         }
 514
 515         //
 516         // ACTIONS
 517         //
 518
 519         /**
 520          * Locks the given Sone. A locked Sone will not be inserted by {@link
 521          * SoneInserter} until it is {@link #unlockSone(Sone) unlocked} again.
 522          *
 523          * @param sone
 524          *              The sone to lock
 525          */
 526         public void lockSone(Sone sone) {
 527                 synchronized (lockedSones) {
 528                         if (lockedSones.add(sone)) {
 529                                 eventBus.post(new SoneLockedEvent(sone));
 530                         }
 531                 }
 532         }
 533
 534         /**
 535          * Unlocks the given Sone.
 536          *
 537          * @param sone
 538          *              The sone to unlock
 539          * @see #lockSone(Sone)
 540          */
 541         public void unlockSone(Sone sone) {
 542                 synchronized (lockedSones) {
 543                         if (lockedSones.remove(sone)) {
 544                                 eventBus.post(new SoneUnlockedEvent(sone));
 545                         }
 546                 }
 547         }
 548
 549         /**
 550          * Adds a local Sone from the given own identity.
 551          *
 552          * @param ownIdentity
 553          *              The own identity to create a Sone from
 554          * @return The added (or already existing) Sone
 555          */
 556         public Sone addLocalSone(OwnIdentity ownIdentity) {
 557                 if (ownIdentity == null) {
 558                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 559                         return null;
 560                 }
 561                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 562                 synchronized (sones) {
 563                         final Sone sone;
 564                         sone = database.newSoneBuilder().by(ownIdentity.getId()).local().using(new Client("Sone", SonePlugin.VERSION.toString())).build(Optional.<SoneCreated>absent());
 565                         sone.modify().setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0)).update();
 566                         sone.setKnown(true);
 567                         /* TODO - load posts ’n stuff */
 568                         sones.put(ownIdentity.getId(), sone);
 569                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 570                         soneInserters.put(sone, soneInserter);
 571                         sone.setStatus(SoneStatus.idle);
 572                         loadSone(sone);
 573                         soneInserter.start();
 574                         return sone;
 575                 }
 576         }
 577
 578         /**
 579          * Creates a new Sone for the given own identity.
 580          *
 581          * @param ownIdentity
 582          *              The own identity to create a Sone for
 583          * @return The created Sone
 584          */
 585         public Sone createSone(OwnIdentity ownIdentity) {
 586                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 587                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 588                         return null;
 589                 }
 590                 Sone sone = addLocalSone(ownIdentity);
 591                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 592                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 593                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 594                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 595                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 596                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 597
 598                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 599                 touchConfiguration();
 600                 return sone;
 601         }
 602
 603         /**
 604          * Adds the Sone of the given identity.
 605          *
 606          * @param identity
 607          *              The identity whose Sone to add
 608          * @return The added or already existing Sone
 609          */
 610         public Sone addRemoteSone(Identity identity) {
 611                 if (identity == null) {
 612                         logger.log(Level.WARNING, "Given Identity is null!");
 613                         return null;
 614                 }
 615                 synchronized (sones) {
 616                         Optional<Sone> existingSone = database.getSone(identity.getId());
 617                         if (existingSone.isPresent() && existingSone.get().isLocal()) {
 618                                 return existingSone.get();
 619                         }
 620                         boolean newSone = !existingSone.isPresent();
 621                         final Sone sone = newSone ? database.newSoneBuilder().by(identity.getId()).build(Optional.<SoneCreated>absent()) : existingSone.get();
 622                         sone.modify().setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0)).update();
 623                         if (newSone) {
 624                                 synchronized (knownSones) {
 625                                         newSone = !knownSones.contains(sone.getId());
 626                                 }
 627                                 sone.setKnown(!newSone);
 628                                 if (newSone) {
 629                                         eventBus.post(new NewSoneFoundEvent(sone));
 630                                         for (Sone localSone : getLocalSones()) {
 631                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 632                                                         followSone(localSone, sone.getId());
 633                                                 }
 634                                         }
 635                                 }
 636                         }
 637                         soneDownloader.addSone(sone);
 638                         soneDownloaders.execute(new Runnable() {
 639
 640                                 @Override
 641                                 @SuppressWarnings("synthetic-access")
 642                                 public void run() {
 643                                         soneDownloader.fetchSone(sone, TO_FREENET_URI.apply(sone));
 644                                 }
 645
 646                         });
 647                         return sone;
 648                 }
 649         }
 650
 651         /**
 652          * Lets the given local Sone follow the Sone with the given ID.
 653          *
 654          * @param sone
 655          *              The local Sone that should follow another Sone
 656          * @param soneId
 657          *              The ID of the Sone to follow
 658          */
 659         public void followSone(Sone sone, String soneId) {
 660                 checkNotNull(sone, "sone must not be null");
 661                 checkNotNull(soneId, "soneId must not be null");
 662                 sone.addFriend(soneId);
 663                 synchronized (soneFollowingTimes) {
 664                         if (!soneFollowingTimes.containsKey(soneId)) {
 665                                 long now = System.currentTimeMillis();
 666                                 soneFollowingTimes.put(soneId, now);
 667                                 Optional<Sone> followedSone = getSone(soneId);
 668                                 if (!followedSone.isPresent()) {
 669                                         return;
 670                                 }
 671                                 for (Post post : followedSone.get().getPosts()) {
 672                                         if (post.getTime() < now) {
 673                                                 markPostKnown(post);
 674                                         }
 675                                 }
 676                                 for (PostReply reply : followedSone.get().getReplies()) {
 677                                         if (reply.getTime() < now) {
 678                                                 reply.modify().setKnown().update(Optional.<ReplyUpdated<PostReply>>absent());
 679                                         }
 680                                 }
 681                         }
 682                 }
 683                 touchConfiguration();
 684         }
 685
 686         /**
 687          * Lets the given local Sone unfollow the Sone with the given ID.
 688          *
 689          * @param sone
 690          *              The local Sone that should unfollow another Sone
 691          * @param soneId
 692          *              The ID of the Sone being unfollowed
 693          */
 694         public void unfollowSone(Sone sone, String soneId) {
 695                 checkNotNull(sone, "sone must not be null");
 696                 checkNotNull(soneId, "soneId must not be null");
 697                 sone.removeFriend(soneId);
 698                 boolean unfollowedSoneStillFollowed = false;
 699                 for (Sone localSone : getLocalSones()) {
 700                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 701                 }
 702                 if (!unfollowedSoneStillFollowed) {
 703                         synchronized (soneFollowingTimes) {
 704                                 soneFollowingTimes.remove(soneId);
 705                         }
 706                 }
 707                 touchConfiguration();
 708         }
 709
 710         /**
 711          * Sets the trust value of the given origin Sone for the target Sone.
 712          *
 713          * @param origin
 714          *              The origin Sone
 715          * @param target
 716          *              The target Sone
 717          * @param trustValue
 718          *              The trust value (from {@code -100} to {@code 100})
 719          */
 720         public void setTrust(Sone origin, Sone target, int trustValue) {
 721                 checkNotNull(origin, "origin must not be null");
 722                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 723                 checkNotNull(target, "target must not be null");
 724                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 725                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 726         }
 727
 728         /**
 729          * Removes any trust assignment for the given target Sone.
 730          *
 731          * @param origin
 732          *              The trust origin
 733          * @param target
 734          *              The trust target
 735          */
 736         public void removeTrust(Sone origin, Sone target) {
 737                 checkNotNull(origin, "origin must not be null");
 738                 checkNotNull(target, "target must not be null");
 739                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 740                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 741         }
 742
 743         /**
 744          * Assigns the configured positive trust value for the given target.
 745          *
 746          * @param origin
 747          *              The trust origin
 748          * @param target
 749          *              The trust target
 750          */
 751         public void trustSone(Sone origin, Sone target) {
 752                 setTrust(origin, target, preferences.getPositiveTrust());
 753         }
 754
 755         /**
 756          * Assigns the configured negative trust value for the given target.
 757          *
 758          * @param origin
 759          *              The trust origin
 760          * @param target
 761          *              The trust target
 762          */
 763         public void distrustSone(Sone origin, Sone target) {
 764                 setTrust(origin, target, preferences.getNegativeTrust());
 765         }
 766
 767         /**
 768          * Removes the trust assignment for the given target.
 769          *
 770          * @param origin
 771          *              The trust origin
 772          * @param target
 773          *              The trust target
 774          */
 775         public void untrustSone(Sone origin, Sone target) {
 776                 removeTrust(origin, target);
 777         }
 778
 779         /**
 780          * Updates the stored Sone with the given Sone.
 781          *
 782          * @param sone
 783          *              The updated Sone
 784          */
 785         public void updateSone(Sone sone) {
 786                 updateSone(sone, false);
 787         }
 788
 789         /**
 790          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 791          * {@code true}, an older Sone than the current Sone can be given to restore an
 792          * old state.
 793          *
 794          * @param sone
 795          *              The Sone to update
 796          * @param soneRescueMode
 797          *              {@code true} if the stored Sone should be updated regardless of the age of
 798          *              the given Sone
 799          */
 800         public void updateSone(Sone sone, boolean soneRescueMode) {
 801                 Optional<Sone> storedSone = getSone(sone.getId());
 802                 if (storedSone.isPresent()) {
 803                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 804                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 805                                 return;
 806                         }
 807                         /* find removed posts. */
 808                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 809                         for (Post oldPost : existingPosts) {
 810                                 if (!sone.getPosts().contains(oldPost)) {
 811                                         eventBus.post(new PostRemovedEvent(oldPost));
 812                                 }
 813                         }
 814                         /* find new posts. */
 815                         for (Post newPost : sone.getPosts()) {
 816                                 if (existingPosts.contains(newPost)) {
 817                                         continue;
 818                                 }
 819                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 820                                         newPost.setKnown(true);
 821                                 } else if (!newPost.isKnown()) {
 822                                         eventBus.post(new NewPostFoundEvent(newPost));
 823                                 }
 824                         }
 825                         /* store posts. */
 826                         database.storePosts(sone, sone.getPosts());
 827                         if (!soneRescueMode) {
 828                                 for (PostReply reply : storedSone.get().getReplies()) {
 829                                         if (!sone.getReplies().contains(reply)) {
 830                                                 eventBus.post(new PostReplyRemovedEvent(reply));
 831                                         }
 832                                 }
 833                         }
 834                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 835                         for (PostReply reply : sone.getReplies()) {
 836                                 if (storedReplies.contains(reply)) {
 837                                         continue;
 838                                 }
 839                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
 840                                         reply.modify().setKnown().update(Optional.<ReplyUpdated<PostReply>>absent());
 841                                 } else if (!reply.isKnown()) {
 842                                         eventBus.post(new NewPostReplyFoundEvent(reply));
 843                                 }
 844                         }
 845                         database.storePostReplies(sone, sone.getReplies());
 846                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
 847                                 database.removeAlbum(album);
 848                                 for (Image image : album.getImages()) {
 849                                         database.removeImage(image);
 850                                 }
 851                         }
 852                         for (Album album : sone.getRootAlbum().getAlbums()) {
 853                                 database.storeAlbum(album);
 854                                 for (Image image : album.getImages()) {
 855                                         database.storeImage(image);
 856                                 }
 857                         }
 858                         synchronized (sones) {
 859                                 sone.setOptions(storedSone.get().getOptions());
 860                                 sone.setKnown(storedSone.get().isKnown());
 861                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 862                                 if (sone.isLocal()) {
 863                                         soneInserters.get(storedSone.get()).setSone(sone);
 864                                         touchConfiguration();
 865                                 }
 866                                 sones.put(sone.getId(), sone);
 867                         }
 868                 }
 869         }
 870
 871         /**
 872          * Deletes the given Sone. This will remove the Sone from the {@link
 873          * #getLocalSones() local Sones}, stop its {@link SoneInserter} and remove the
 874          * context from its identity.
 875          *
 876          * @param sone
 877          *              The Sone to delete
 878          */
 879         public void deleteSone(Sone sone) {
 880                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 881                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
 882                         return;
 883                 }
 884                 synchronized (sones) {
 885                         if (!getLocalSones().contains(sone)) {
 886                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
 887                                 return;
 888                         }
 889                         sones.remove(sone.getId());
 890                         SoneInserter soneInserter = soneInserters.remove(sone);
 891                         soneInserter.stop();
 892                 }
 893                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 894                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 895                 try {
 896                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 897                 } catch (ConfigurationException ce1) {
 898                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 899                 }
 900         }
 901
 902         /**
 903          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
 904          * known} before, a {@link MarkSoneKnownEvent} is fired.
 905          *
 906          * @param sone
 907          *              The Sone to mark as known
 908          */
 909         public void markSoneKnown(Sone sone) {
 910                 if (!sone.isKnown()) {
 911                         sone.setKnown(true);
 912                         synchronized (knownSones) {
 913                                 knownSones.add(sone.getId());
 914                         }
 915                         eventBus.post(new MarkSoneKnownEvent(sone));
 916                         touchConfiguration();
 917                 }
 918         }
 919
 920         /**
 921          * Loads and updates the given Sone from the configuration. If any error is
 922          * encountered, loading is aborted and the given Sone is not changed.
 923          *
 924          * @param sone
 925          *              The Sone to load and update
 926          */
 927         public void loadSone(Sone sone) {
 928                 if (!sone.isLocal()) {
 929                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
 930                         return;
 931                 }
 932                 logger.info(String.format("Loading local Sone: %s", sone));
 933
 934                 /* initialize options. */
 935                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 936                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 937                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 938                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 939                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 940                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 941
 942                 /* load Sone. */
 943                 String sonePrefix = "Sone/" + sone.getId();
 944                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 945                 if (soneTime == null) {
 946                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 947                         return;
 948                 }
 949                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 950
 951                 /* load profile. */
 952                 Profile profile = new Profile(sone);
 953                 String firstName = configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null);
 954                 String middleName = configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null);
 955                 String lastName = configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null);
 956                 profile.modify().setFirstName(firstName).setMiddleName(middleName).setLastName(lastName).update();
 957                 Integer birthDay = configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null);
 958                 Integer birthMonth = configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null);
 959                 Integer birthYear = configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null);
 960                 profile.modify().setBirthYear(birthYear).setBirthMonth(birthMonth).setBirthDay(birthDay).update();
 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.setField(profile.addField(fieldName), 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).transform(GET_ID));
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(Optional.<ReplyUpdated<PostReply>>absent());
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                         reply.modify().setKnown().update(postReplyUpdated());
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                 postReplyUpdated().get().replyUpdated(reply);
1223                 database.removePostReply(reply);
1224                 touchConfiguration();
1225         }
1226
1227         /**
1228          * Creates a new image.
1229          *
1230          * @param sone
1231          *              The Sone creating the image
1232          * @param album
1233          *              The album the image will be inserted into
1234          * @param temporaryImage
1235          *              The temporary image to create the image from
1236          * @return The newly created image
1237          */
1238         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1239                 checkNotNull(sone, "sone must not be null");
1240                 checkNotNull(album, "album must not be null");
1241                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1242                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1243                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1244                 Image image = album.newImageBuilder().withId(temporaryImage.getId()).sized(temporaryImage.getWidth(), temporaryImage.getHeight()).build(imageCreated());
1245                 imageInserter.insertImage(temporaryImage, image);
1246                 return image;
1247         }
1248
1249         /**
1250          * Deletes the given image. This method will also delete a matching temporary
1251          * image.
1252          *
1253          * @param image
1254          *              The image to delete
1255          * @see #deleteTemporaryImage(String)
1256          */
1257         public void deleteImage(Image image) {
1258                 checkNotNull(image, "image must not be null");
1259                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1260                 deleteTemporaryImage(image.getId());
1261                 image.remove();
1262                 touchConfiguration();
1263         }
1264
1265         /**
1266          * Creates a new temporary image.
1267          *
1268          * @param mimeType
1269          *              The MIME type of the temporary image
1270          * @param imageData
1271          *              The encoded data of the image
1272          * @return The temporary image
1273          */
1274         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData, int width, int height) {
1275                 TemporaryImage temporaryImage = new TemporaryImage(mimeType, imageData, width, height);
1276                 synchronized (temporaryImages) {
1277                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1278                 }
1279                 return temporaryImage;
1280         }
1281
1282         /**
1283          * Deletes the temporary image with the given ID.
1284          *
1285          * @param imageId
1286          *              The ID of the temporary image to delete
1287          */
1288         public void deleteTemporaryImage(String imageId) {
1289                 checkNotNull(imageId, "imageId must not be null");
1290                 synchronized (temporaryImages) {
1291                         temporaryImages.remove(imageId);
1292                 }
1293                 Optional<Image> image = getImage(imageId);
1294                 if (image.isPresent()) {
1295                         imageInserter.cancelImageInsert(image.get());
1296                 }
1297         }
1298
1299         /**
1300          * Notifies the core that the configuration, either of the core or of a single
1301          * local Sone, has changed, and that the configuration should be saved.
1302          */
1303         public void touchConfiguration() {
1304                 lastConfigurationUpdate = System.currentTimeMillis();
1305         }
1306
1307         //
1308         // SERVICE METHODS
1309         //
1310
1311         @Override
1312         public void serviceStart() {
1313                 loadConfiguration();
1314                 updateChecker.start();
1315                 identityManager.start();
1316                 webOfTrustUpdater.init();
1317                 webOfTrustUpdater.start();
1318                 database.start();
1319         }
1320
1321         @Override
1322         public void serviceRun() {
1323                 long lastSaved = System.currentTimeMillis();
1324                 while (!shouldStop()) {
1325                         sleep(1000);
1326                         long now = System.currentTimeMillis();
1327                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1328                                 for (Sone localSone : getLocalSones()) {
1329                                         saveSone(localSone);
1330                                 }
1331                                 saveConfiguration();
1332                                 lastSaved = now;
1333                         }
1334                 }
1335         }
1336
1337         @Override
1338         public void serviceStop() {
1339                 localElementTicker.shutdownNow();
1340                 synchronized (sones) {
1341                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1342                                 soneInserter.getValue().stop();
1343                                 saveSone(soneInserter.getKey());
1344                         }
1345                 }
1346                 saveConfiguration();
1347                 database.stop();
1348                 webOfTrustUpdater.stop();
1349                 updateChecker.stop();
1350                 soneDownloader.stop();
1351                 soneDownloaders.shutdown();
1352                 identityManager.stop();
1353         }
1354
1355         //
1356         // PRIVATE METHODS
1357         //
1358
1359         /**
1360          * Saves the given Sone. This will persist all local settings for the given
1361          * Sone, such as the friends list and similar, private options.
1362          *
1363          * @param sone
1364          *              The Sone to save
1365          */
1366         private synchronized void saveSone(Sone sone) {
1367                 if (!sone.isLocal()) {
1368                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1369                         return;
1370                 }
1371                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1372                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1373                         return;
1374                 }
1375
1376                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1377                 try {
1378                         /* save Sone into configuration. */
1379                         String sonePrefix = "Sone/" + sone.getId();
1380                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1381                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1382
1383                         /* save profile. */
1384                         Profile profile = sone.getProfile();
1385                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1386                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1387                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1388                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1389                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1390                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1391                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1392
1393                         /* save profile fields. */
1394                         int fieldCounter = 0;
1395                         for (Field profileField : profile.getFields()) {
1396                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1397                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1398                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1399                         }
1400                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1401
1402                         /* save posts. */
1403                         int postCounter = 0;
1404                         for (Post post : sone.getPosts()) {
1405                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1406                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1407                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1408                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1409                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1410                         }
1411                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1412
1413                         /* save replies. */
1414                         int replyCounter = 0;
1415                         for (PostReply reply : sone.getReplies()) {
1416                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1417                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1418                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1419                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1420                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1421                         }
1422                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1423
1424                         /* save post likes. */
1425                         int postLikeCounter = 0;
1426                         for (String postId : sone.getLikedPostIds()) {
1427                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1428                         }
1429                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1430
1431                         /* save reply likes. */
1432                         int replyLikeCounter = 0;
1433                         for (String replyId : sone.getLikedReplyIds()) {
1434                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1435                         }
1436                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1437
1438                         /* save friends. */
1439                         int friendCounter = 0;
1440                         for (String friendId : sone.getFriends()) {
1441                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1442                         }
1443                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1444
1445                         /* save albums. first, collect in a flat structure, top-level first. */
1446                         List<Album> albums = from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1447
1448                         int albumCounter = 0;
1449                         for (Album album : albums) {
1450                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1451                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1452                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1453                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1454                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1455                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage().transform(GET_ID).orNull());
1456                         }
1457                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1458
1459                         /* save images. */
1460                         int imageCounter = 0;
1461                         for (Album album : albums) {
1462                                 for (Image image : album.getImages()) {
1463                                         if (!image.isInserted()) {
1464                                                 continue;
1465                                         }
1466                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1467                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1468                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1469                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1470                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1471                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1472                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1473                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1474                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1475                                 }
1476                         }
1477                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1478
1479                         /* save options. */
1480                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1481                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1482                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1483                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1484                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1485                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").get().name());
1486
1487                         configuration.save();
1488
1489                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1490
1491                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1492                 } catch (ConfigurationException ce1) {
1493                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1494                 }
1495         }
1496
1497         /** Saves the current options. */
1498         private void saveConfiguration() {
1499                 synchronized (configuration) {
1500                         if (storingConfiguration) {
1501                                 logger.log(Level.FINE, "Already storing configuration…");
1502                                 return;
1503                         }
1504                         storingConfiguration = true;
1505                 }
1506
1507                 /* store the options first. */
1508                 try {
1509                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1510                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1511                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1512                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1513                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1514                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1515                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1516                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1517                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1518                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1519                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1520                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1521
1522                         /* save known Sones. */
1523                         int soneCounter = 0;
1524                         synchronized (knownSones) {
1525                                 for (String knownSoneId : knownSones) {
1526                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1527                                 }
1528                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1529                         }
1530
1531                         /* save Sone following times. */
1532                         soneCounter = 0;
1533                         synchronized (soneFollowingTimes) {
1534                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1535                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1536                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1537                                         ++soneCounter;
1538                                 }
1539                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1540                         }
1541
1542                         /* save known posts. */
1543                         database.save();
1544
1545                         /* save bookmarked posts. */
1546                         int bookmarkedPostCounter = 0;
1547                         synchronized (bookmarkedPosts) {
1548                                 for (String bookmarkedPostId : bookmarkedPosts) {
1549                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1550                                 }
1551                         }
1552                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1553
1554                         /* now save it. */
1555                         configuration.save();
1556
1557                 } catch (ConfigurationException ce1) {
1558                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1559                 } catch (DatabaseException de1) {
1560                         logger.log(Level.SEVERE, "Could not save database!", de1);
1561                 } finally {
1562                         synchronized (configuration) {
1563                                 storingConfiguration = false;
1564                         }
1565                 }
1566         }
1567
1568         /** Loads the configuration. */
1569         private void loadConfiguration() {
1570                 /* create options. */
1571                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
1572
1573                         @Override
1574                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1575                                 SoneInserter.setInsertionDelay(newValue);
1576                         }
1577
1578                 }));
1579                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1580                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1581                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1582                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1583                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1584                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1585                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1586                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1587                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
1588
1589                         @Override
1590                         @SuppressWarnings("synthetic-access")
1591                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
1592                                 fcpInterface.setActive(newValue);
1593                         }
1594                 }));
1595                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
1596
1597                         @Override
1598                         @SuppressWarnings("synthetic-access")
1599                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1600                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
1601                         }
1602
1603                 }));
1604
1605                 loadConfigurationValue("InsertionDelay");
1606                 loadConfigurationValue("PostsPerPage");
1607                 loadConfigurationValue("ImagesPerPage");
1608                 loadConfigurationValue("CharactersPerPost");
1609                 loadConfigurationValue("PostCutOffLength");
1610                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1611                 loadConfigurationValue("PositiveTrust");
1612                 loadConfigurationValue("NegativeTrust");
1613                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1614                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1615                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1616
1617                 /* load known Sones. */
1618                 int soneCounter = 0;
1619                 while (true) {
1620                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1621                         if (knownSoneId == null) {
1622                                 break;
1623                         }
1624                         synchronized (knownSones) {
1625                                 knownSones.add(knownSoneId);
1626                         }
1627                 }
1628
1629                 /* load Sone following times. */
1630                 soneCounter = 0;
1631                 while (true) {
1632                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1633                         if (soneId == null) {
1634                                 break;
1635                         }
1636                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1637                         synchronized (soneFollowingTimes) {
1638                                 soneFollowingTimes.put(soneId, time);
1639                         }
1640                         ++soneCounter;
1641                 }
1642
1643                 /* load bookmarked posts. */
1644                 int bookmarkedPostCounter = 0;
1645                 while (true) {
1646                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1647                         if (bookmarkedPostId == null) {
1648                                 break;
1649                         }
1650                         synchronized (bookmarkedPosts) {
1651                                 bookmarkedPosts.add(bookmarkedPostId);
1652                         }
1653                 }
1654
1655         }
1656
1657         /**
1658          * Loads an {@link Integer} configuration value for the option with the given
1659          * name, logging validation failures.
1660          *
1661          * @param optionName
1662          *              The name of the option to load
1663          */
1664         private void loadConfigurationValue(String optionName) {
1665                 try {
1666                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1667                 } catch (IllegalArgumentException iae1) {
1668                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1669                 }
1670         }
1671
1672         /**
1673          * Notifies the core that a new {@link OwnIdentity} was added.
1674          *
1675          * @param ownIdentityAddedEvent
1676          *              The event
1677          */
1678         @Subscribe
1679         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1680                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1681                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1682                 if (ownIdentity.hasContext("Sone")) {
1683                         addLocalSone(ownIdentity);
1684                 }
1685         }
1686
1687         /**
1688          * Notifies the core that an {@link OwnIdentity} was removed.
1689          *
1690          * @param ownIdentityRemovedEvent
1691          *              The event
1692          */
1693         @Subscribe
1694         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1695                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1696                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1697                 trustedIdentities.removeAll(ownIdentity);
1698         }
1699
1700         /**
1701          * Notifies the core that a new {@link Identity} was added.
1702          *
1703          * @param identityAddedEvent
1704          *              The event
1705          */
1706         @Subscribe
1707         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1708                 Identity identity = identityAddedEvent.identity();
1709                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1710                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1711                 addRemoteSone(identity);
1712         }
1713
1714         /**
1715          * Notifies the core that an {@link Identity} was updated.
1716          *
1717          * @param identityUpdatedEvent
1718          *              The event
1719          */
1720         @Subscribe
1721         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1722                 final Identity identity = identityUpdatedEvent.identity();
1723                 soneDownloaders.execute(new Runnable() {
1724
1725                         @Override
1726                         @SuppressWarnings("synthetic-access")
1727                         public void run() {
1728                                 Optional<Sone> sone = getRemoteSone(identity.getId());
1729                                 sone.get().modify().setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.get().getLatestEdition())).update();
1730                                 soneDownloader.addSone(sone.get());
1731                                 soneDownloader.fetchSone(sone.get());
1732                         }
1733                 });
1734         }
1735
1736         /**
1737          * Notifies the core that an {@link Identity} was removed.
1738          *
1739          * @param identityRemovedEvent
1740          *              The event
1741          */
1742         @Subscribe
1743         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1744                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1745                 Identity identity = identityRemovedEvent.identity();
1746                 trustedIdentities.remove(ownIdentity, identity);
1747                 boolean foundIdentity = false;
1748                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1749                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1750                                 continue;
1751                         }
1752                         if (trustedIdentity.getValue().contains(identity)) {
1753                                 foundIdentity = true;
1754                         }
1755                 }
1756                 if (foundIdentity) {
1757                         /* some local identity still trusts this identity, don’t remove. */
1758                         return;
1759                 }
1760                 Optional<Sone> sone = getSone(identity.getId());
1761                 if (!sone.isPresent()) {
1762                         /* TODO - we don’t have the Sone anymore. should this happen? */
1763                         return;
1764                 }
1765                 database.removePosts(sone.get());
1766                 for (Post post : sone.get().getPosts()) {
1767                         eventBus.post(new PostRemovedEvent(post));
1768                 }
1769                 database.removePostReplies(sone.get());
1770                 for (PostReply reply : sone.get().getReplies()) {
1771                         eventBus.post(new PostReplyRemovedEvent(reply));
1772                 }
1773                 synchronized (sones) {
1774                         sones.remove(identity.getId());
1775                 }
1776                 eventBus.post(new SoneRemovedEvent(sone.get()));
1777         }
1778
1779         /**
1780          * Deletes the temporary image.
1781          *
1782          * @param imageInsertFinishedEvent
1783          *              The event
1784          */
1785         @Subscribe
1786         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1787                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1788                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1789                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1790                 touchConfiguration();
1791         }
1792
1793         public Optional<PostCreated> postCreated() {
1794                 return Optional.<PostCreated>of(new PostCreated() {
1795                         @Override
1796                         public void postCreated(final Post post) {
1797                                 if (post.isKnown()) {
1798                                         return;
1799                                 }
1800                                 eventBus.post(new NewPostFoundEvent(post));
1801                                 if (post.getSone().isLocal()) {
1802                                         localElementTicker.schedule(new Runnable() {
1803                                                 @Override
1804                                                 public void run() {
1805                                                         markPostKnown(post);
1806                                                 }
1807                                         }, 10, TimeUnit.SECONDS);
1808                                 }
1809                         }
1810                 });
1811         }
1812
1813         public Optional<PostReplyCreated> postReplyCreated() {
1814                 return Optional.<PostReplyCreated>of(new PostReplyCreated() {
1815                         @Override
1816                         public void postReplyCreated(final PostReply postReply) {
1817                                 if (postReply.isKnown()) {
1818                                         return;
1819                                 }
1820                                 eventBus.post(new NewPostReplyFoundEvent(postReply));
1821                                 if (postReply.getSone().isLocal()) {
1822                                         localElementTicker.schedule(new Runnable() {
1823
1824                                                 /**
1825                                                  * {@inheritDoc}
1826                                                  */
1827                                                 @Override
1828                                                 public void run() {
1829                                                         postReplyUpdated().get().replyUpdated(postReply);
1830                                                 }
1831                                         }, 10, TimeUnit.SECONDS);
1832                                 }
1833                         }
1834                 });
1835         }
1836
1837         public Optional<ReplyUpdated<PostReply>> postReplyUpdated() {
1838                 return Optional.<ReplyUpdated<PostReply>>of(new ReplyUpdated<PostReply>() {
1839                         @Override
1840                         public void replyUpdated(PostReply reply) {
1841                                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1842                         }
1843                 });
1844         }
1845
1846         public Optional<ImageCreated> imageCreated() {
1847                 return Optional.<ImageCreated>of(new ImageCreated() {
1848                         @Override
1849                         public void imageCreated(Image image) {
1850                                 /* nothing happens here yet. */
1851                         }
1852                 });
1853         }
1854
1855 }