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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import static com.google.common.base.Optional.of;
  21 import static com.google.common.base.Preconditions.checkArgument;
  22 import static com.google.common.base.Preconditions.checkNotNull;
  23 import static com.google.common.base.Predicates.not;
  24 import static com.google.common.collect.FluentIterable.from;
  25 import static net.pterodactylus.sone.data.Identified.GET_ID;
  26 import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
  27
  28 import java.net.MalformedURLException;
  29 import java.util.Collection;
  30 import java.util.HashMap;
  31 import java.util.HashSet;
  32 import java.util.List;
  33 import java.util.Map;
  34 import java.util.Map.Entry;
  35 import java.util.Set;
  36 import java.util.concurrent.ExecutorService;
  37 import java.util.concurrent.Executors;
  38 import java.util.concurrent.ScheduledExecutorService;
  39 import java.util.concurrent.TimeUnit;
  40 import java.util.logging.Level;
  41 import java.util.logging.Logger;
  42
  43 import net.pterodactylus.sone.core.Options.DefaultOption;
  44 import net.pterodactylus.sone.core.Options.Option;
  45 import net.pterodactylus.sone.core.Options.OptionWatcher;
  46 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  47 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  48 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  49 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  50 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  51 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  52 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  53 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  54 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  55 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  56 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  57 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  58 import net.pterodactylus.sone.data.Album;
  59 import net.pterodactylus.sone.data.Client;
  60 import net.pterodactylus.sone.data.Image;
  61 import net.pterodactylus.sone.data.Post;
  62 import net.pterodactylus.sone.data.PostReply;
  63 import net.pterodactylus.sone.data.Profile;
  64 import net.pterodactylus.sone.data.Profile.Field;
  65 import net.pterodactylus.sone.data.Reply;
  66 import net.pterodactylus.sone.data.Sone;
  67 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  68 import net.pterodactylus.sone.data.Sone.SoneStatus;
  69 import net.pterodactylus.sone.data.TemporaryImage;
  70 import net.pterodactylus.sone.database.Database;
  71 import net.pterodactylus.sone.database.DatabaseException;
  72 import net.pterodactylus.sone.database.ImageBuilder.ImageCreated;
  73 import net.pterodactylus.sone.database.PostBuilder;
  74 import net.pterodactylus.sone.database.PostBuilder.PostCreated;
  75 import net.pterodactylus.sone.database.PostReplyBuilder;
  76 import net.pterodactylus.sone.database.PostReplyBuilder.PostReplyCreated;
  77 import net.pterodactylus.sone.database.PostReplyProvider;
  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 freenet.keys.FreenetURI;
  99
 100 import com.google.common.base.Optional;
 101 import com.google.common.base.Predicate;
 102 import com.google.common.base.Predicates;
 103 import com.google.common.collect.HashMultimap;
 104 import com.google.common.collect.ImmutableSet;
 105 import com.google.common.collect.Maps;
 106 import com.google.common.collect.Multimap;
 107 import com.google.common.collect.Multimaps;
 108 import com.google.common.eventbus.EventBus;
 109 import com.google.common.eventbus.Subscribe;
 110 import com.google.inject.Inject;
 111
 112 /**
 113  * The Sone core.
 114  *
 115  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 116  */
 117 public class Core extends AbstractService implements SoneProvider, PostReplyProvider {
 118
 119         /** The logger. */
 120         private static final Logger logger = Logging.getLogger(Core.class);
 121
 122         /** The options. */
 123         private final Options options = new Options();
 124
 125         /** The preferences. */
 126         private final Preferences preferences = new Preferences(options);
 127
 128         /** The event bus. */
 129         private final EventBus eventBus;
 130
 131         /** The configuration. */
 132         private Configuration configuration;
 133
 134         /** Whether we’re currently saving the configuration. */
 135         private boolean storingConfiguration = false;
 136
 137         /** The identity manager. */
 138         private final IdentityManager identityManager;
 139
 140         /** Interface to freenet. */
 141         private final FreenetInterface freenetInterface;
 142
 143         /** The Sone downloader. */
 144         private final SoneDownloader soneDownloader;
 145
 146         /** The image inserter. */
 147         private final ImageInserter imageInserter;
 148
 149         /** Sone downloader thread-pool. */
 150         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 151
 152         /** The update checker. */
 153         private final UpdateChecker updateChecker;
 154
 155         /** The trust updater. */
 156         private final WebOfTrustUpdater webOfTrustUpdater;
 157
 158         /** The FCP interface. */
 159         private volatile FcpInterface fcpInterface;
 160
 161         /** The times Sones were followed. */
 162         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 163
 164         /** Locked local Sones. */
 165         /* synchronize on itself. */
 166         private final Set<Sone> lockedSones = new HashSet<Sone>();
 167
 168         /** Sone inserters. */
 169         /* synchronize access on this on sones. */
 170         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 171
 172         /** Sone rescuers. */
 173         /* synchronize access on this on sones. */
 174         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 175
 176         /** All Sones. */
 177         /* synchronize access on this on itself. */
 178         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 179
 180         /** All known Sones. */
 181         private final Set<String> knownSones = new HashSet<String>();
 182
 183         /** The post database. */
 184         private final Database database;
 185
 186         /** All bookmarked posts. */
 187         /* synchronize access on itself. */
 188         private final Set<String> bookmarkedPosts = new HashSet<String>();
 189
 190         /** Trusted identities, sorted by own identities. */
 191         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 192
 193         /** All temporary images. */
 194         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 195
 196         /** Ticker for threads that mark own elements as known. */
 197         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 198
 199         /** The time the configuration was last touched. */
 200         private volatile long lastConfigurationUpdate;
 201
 202         /**
 203          * Creates a new core.
 204          *
 205          * @param configuration
 206          *              The configuration of the core
 207          * @param freenetInterface
 208          *              The freenet interface
 209          * @param identityManager
 210          *              The identity manager
 211          * @param webOfTrustUpdater
 212          *              The WebOfTrust updater
 213          * @param eventBus
 214          *              The event bus
 215          * @param database
 216          *              The database
 217          */
 218         @Inject
 219         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 220                 super("Sone Core");
 221                 this.configuration = configuration;
 222                 this.freenetInterface = freenetInterface;
 223                 this.identityManager = identityManager;
 224                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 225                 this.imageInserter = new ImageInserter(freenetInterface);
 226                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 227                 this.webOfTrustUpdater = webOfTrustUpdater;
 228                 this.eventBus = eventBus;
 229                 this.database = database;
 230         }
 231
 232         //
 233         // ACCESSORS
 234         //
 235
 236         /**
 237          * Sets the configuration to use. This will automatically save the current
 238          * configuration to the given configuration.
 239          *
 240          * @param configuration
 241          *              The new configuration to use
 242          */
 243         public void setConfiguration(Configuration configuration) {
 244                 this.configuration = configuration;
 245                 touchConfiguration();
 246         }
 247
 248         /**
 249          * Returns the options used by the core.
 250          *
 251          * @return The options of the core
 252          */
 253         public Preferences getPreferences() {
 254                 return preferences;
 255         }
 256
 257         /**
 258          * Returns the identity manager used by the core.
 259          *
 260          * @return The identity manager
 261          */
 262         public IdentityManager getIdentityManager() {
 263                 return identityManager;
 264         }
 265
 266         /**
 267          * Returns the update checker.
 268          *
 269          * @return The update checker
 270          */
 271         public UpdateChecker getUpdateChecker() {
 272                 return updateChecker;
 273         }
 274
 275         /**
 276          * Sets the FCP interface to use.
 277          *
 278          * @param fcpInterface
 279          *              The FCP interface to use
 280          */
 281         public void setFcpInterface(FcpInterface fcpInterface) {
 282                 this.fcpInterface = fcpInterface;
 283         }
 284
 285         public Database getDatabase() {
 286                 return database;
 287         }
 288
 289         /**
 290          * Returns the Sone rescuer for the given local Sone.
 291          *
 292          * @param sone
 293          *              The local Sone to get the rescuer for
 294          * @return The Sone rescuer for the given Sone
 295          */
 296         public SoneRescuer getSoneRescuer(Sone sone) {
 297                 checkNotNull(sone, "sone must not be null");
 298                 checkArgument(sone.isLocal(), "sone must be local");
 299                 synchronized (sones) {
 300                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 301                         if (soneRescuer == null) {
 302                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 303                                 soneRescuers.put(sone, soneRescuer);
 304                                 soneRescuer.start();
 305                         }
 306                         return soneRescuer;
 307                 }
 308         }
 309
 310         /**
 311          * Returns whether the given Sone is currently locked.
 312          *
 313          * @param sone
 314          *              The sone to check
 315          * @return {@code true} if the Sone is locked, {@code false} if it is not
 316          */
 317         public boolean isLocked(Sone sone) {
 318                 synchronized (lockedSones) {
 319                         return lockedSones.contains(sone);
 320                 }
 321         }
 322
 323         @Override
 324         public Collection<Sone> getSones() {
 325                 synchronized (sones) {
 326                         return ImmutableSet.copyOf(sones.values());
 327                 }
 328         }
 329
 330         @Override
 331         public Optional<Sone> getSone(String id) {
 332                 synchronized (sones) {
 333                         return Optional.fromNullable(sones.get(id));
 334                 }
 335         }
 336
 337         @Override
 338         public Collection<Sone> getLocalSones() {
 339                 synchronized (sones) {
 340                         return from(sones.values()).filter(new Predicate<Sone>() {
 341
 342                                 @Override
 343                                 public boolean apply(Sone sone) {
 344                                         return sone.isLocal();
 345                                 }
 346                         }).toSet();
 347                 }
 348         }
 349
 350         /**
 351          * Returns the local Sone with the given ID, optionally creating a new Sone.
 352          *
 353          * @param id
 354          *              The ID of the Sone
 355          * @return The Sone with the given ID, or {@code null}
 356          */
 357         public Optional<Sone> getLocalSone(String id) {
 358                 return from(database.getSone(id).asSet()).firstMatch(LOCAL_SONE_FILTER);
 359         }
 360
 361         @Override
 362         public Collection<Sone> getRemoteSones() {
 363                 synchronized (sones) {
 364                         return from(sones.values()).filter(new Predicate<Sone>() {
 365
 366                                 @Override
 367                                 public boolean apply(Sone sone) {
 368                                         return !sone.isLocal();
 369                                 }
 370                         }).toSet();
 371                 }
 372         }
 373
 374         /**
 375          * Returns the remote Sone with the given ID.
 376          *
 377          * @param id
 378          *              The ID of the remote Sone to get
 379          * @return The Sone with the given ID
 380          */
 381         public Optional<Sone> getRemoteSone(String id) {
 382                 return from(database.getSone(id).asSet()).firstMatch(not(LOCAL_SONE_FILTER));
 383         }
 384
 385         /**
 386          * Returns whether the given Sone has been modified.
 387          *
 388          * @param sone
 389          *              The Sone to check for modifications
 390          * @return {@code true} if a modification has been detected in the Sone, {@code
 391          *         false} otherwise
 392          */
 393         public boolean isModifiedSone(Sone sone) {
 394                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 395         }
 396
 397         /**
 398          * Returns the time when the given was first followed by any local Sone.
 399          *
 400          * @param sone
 401          *              The Sone to get the time for
 402          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first been
 403          *         followed, or {@link Long#MAX_VALUE}
 404          */
 405         public long getSoneFollowingTime(Sone sone) {
 406                 synchronized (soneFollowingTimes) {
 407                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 408                 }
 409         }
 410
 411         @Override
 412         public Optional<PostReply> getPostReply(String replyId) {
 413                 return database.getPostReply(replyId);
 414         }
 415
 416         @Override
 417         public List<PostReply> getReplies(final String postId) {
 418                 return database.getReplies(postId);
 419         }
 420
 421         /**
 422          * Returns all Sones that have liked the given post.
 423          *
 424          * @param post
 425          *              The post to get the liking Sones for
 426          * @return The Sones that like the given post
 427          */
 428         public Set<Sone> getLikes(Post post) {
 429                 Set<Sone> sones = new HashSet<Sone>();
 430                 for (Sone sone : getSones()) {
 431                         if (sone.getLikedPostIds().contains(post.getId())) {
 432                                 sones.add(sone);
 433                         }
 434                 }
 435                 return sones;
 436         }
 437
 438         /**
 439          * Returns all Sones that have liked the given reply.
 440          *
 441          * @param reply
 442          *              The reply to get the liking Sones for
 443          * @return The Sones that like the given reply
 444          */
 445         public Set<Sone> getLikes(PostReply reply) {
 446                 Set<Sone> sones = new HashSet<Sone>();
 447                 for (Sone sone : getSones()) {
 448                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 449                                 sones.add(sone);
 450                         }
 451                 }
 452                 return sones;
 453         }
 454
 455         /**
 456          * Returns whether the given post is bookmarked.
 457          *
 458          * @param post
 459          *              The post to check
 460          * @return {@code true} if the given post is bookmarked, {@code false}
 461          *         otherwise
 462          */
 463         public boolean isBookmarked(Post post) {
 464                 return isPostBookmarked(post.getId());
 465         }
 466
 467         /**
 468          * Returns whether the post with the given ID is bookmarked.
 469          *
 470          * @param id
 471          *              The ID of the post to check
 472          * @return {@code true} if the post with the given ID is bookmarked, {@code
 473          *         false} otherwise
 474          */
 475         public boolean isPostBookmarked(String id) {
 476                 synchronized (bookmarkedPosts) {
 477                         return bookmarkedPosts.contains(id);
 478                 }
 479         }
 480
 481         /**
 482          * Returns all currently known bookmarked posts.
 483          *
 484          * @return All bookmarked posts
 485          */
 486         public Set<Post> getBookmarkedPosts() {
 487                 Set<Post> posts = new HashSet<Post>();
 488                 synchronized (bookmarkedPosts) {
 489                         for (String bookmarkedPostId : bookmarkedPosts) {
 490                                 Optional<Post> post = database.getPost(bookmarkedPostId);
 491                                 if (post.isPresent()) {
 492                                         posts.add(post.get());
 493                                 }
 494                         }
 495                 }
 496                 return posts;
 497         }
 498
 499         public Optional<Album> getAlbum(String albumId) {
 500                 return database.getAlbum(albumId);
 501         }
 502
 503         public Optional<Image> getImage(String imageId) {
 504                 return database.getImage(imageId);
 505         }
 506
 507         /**
 508          * Returns the temporary image with the given ID.
 509          *
 510          * @param imageId
 511          *              The ID of the temporary image
 512          * @return The temporary image, or {@code null} if there is no temporary image
 513          *         with the given ID
 514          */
 515         public TemporaryImage getTemporaryImage(String imageId) {
 516                 synchronized (temporaryImages) {
 517                         return temporaryImages.get(imageId);
 518                 }
 519         }
 520
 521         //
 522         // ACTIONS
 523         //
 524
 525         /**
 526          * Locks the given Sone. A locked Sone will not be inserted by {@link
 527          * SoneInserter} until it is {@link #unlockSone(Sone) unlocked} again.
 528          *
 529          * @param sone
 530          *              The sone to lock
 531          */
 532         public void lockSone(Sone sone) {
 533                 synchronized (lockedSones) {
 534                         if (lockedSones.add(sone)) {
 535                                 eventBus.post(new SoneLockedEvent(sone));
 536                         }
 537                 }
 538         }
 539
 540         /**
 541          * Unlocks the given Sone.
 542          *
 543          * @param sone
 544          *              The sone to unlock
 545          * @see #lockSone(Sone)
 546          */
 547         public void unlockSone(Sone sone) {
 548                 synchronized (lockedSones) {
 549                         if (lockedSones.remove(sone)) {
 550                                 eventBus.post(new SoneUnlockedEvent(sone));
 551                         }
 552                 }
 553         }
 554
 555         /**
 556          * Adds a local Sone from the given own identity.
 557          *
 558          * @param ownIdentity
 559          *              The own identity to create a Sone from
 560          * @return The added (or already existing) Sone
 561          */
 562         public Sone addLocalSone(OwnIdentity ownIdentity) {
 563                 if (ownIdentity == null) {
 564                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 565                         return null;
 566                 }
 567                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 568                 synchronized (sones) {
 569                         final Sone sone;
 570                         try {
 571                                 sone = database.newSoneBuilder().by(ownIdentity).local().build().setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 572                         } catch (MalformedURLException mue1) {
 573                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 574                                 return null;
 575                         }
 576                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 577                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 578                         sone.setKnown(true);
 579                         /* TODO - load posts ’n stuff */
 580                         sones.put(ownIdentity.getId(), sone);
 581                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 582                         soneInserters.put(sone, soneInserter);
 583                         sone.setStatus(SoneStatus.idle);
 584                         loadSone(sone);
 585                         soneInserter.start();
 586                         return sone;
 587                 }
 588         }
 589
 590         /**
 591          * Creates a new Sone for the given own identity.
 592          *
 593          * @param ownIdentity
 594          *              The own identity to create a Sone for
 595          * @return The created Sone
 596          */
 597         public Sone createSone(OwnIdentity ownIdentity) {
 598                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 599                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 600                         return null;
 601                 }
 602                 Sone sone = addLocalSone(ownIdentity);
 603                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 604                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 605                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 606                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 607                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 608                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 609
 610                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 611                 touchConfiguration();
 612                 return sone;
 613         }
 614
 615         /**
 616          * Adds the Sone of the given identity.
 617          *
 618          * @param identity
 619          *              The identity whose Sone to add
 620          * @return The added or already existing Sone
 621          */
 622         public Sone addRemoteSone(Identity identity) {
 623                 if (identity == null) {
 624                         logger.log(Level.WARNING, "Given Identity is null!");
 625                         return null;
 626                 }
 627                 synchronized (sones) {
 628                         final Sone sone = database.newSoneBuilder().by(identity).build();
 629                         if (sone.isLocal()) {
 630                                 return sone;
 631                         }
 632                         sone.setIdentity(identity);
 633                         boolean newSone = sone.getRequestUri() == null;
 634                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 635                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 636                         if (newSone) {
 637                                 synchronized (knownSones) {
 638                                         newSone = !knownSones.contains(sone.getId());
 639                                 }
 640                                 sone.setKnown(!newSone);
 641                                 if (newSone) {
 642                                         eventBus.post(new NewSoneFoundEvent(sone));
 643                                         for (Sone localSone : getLocalSones()) {
 644                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 645                                                         followSone(localSone, sone.getId());
 646                                                 }
 647                                         }
 648                                 }
 649                         }
 650                         soneDownloader.addSone(sone);
 651                         soneDownloaders.execute(new Runnable() {
 652
 653                                 @Override
 654                                 @SuppressWarnings("synthetic-access")
 655                                 public void run() {
 656                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 657                                 }
 658
 659                         });
 660                         return sone;
 661                 }
 662         }
 663
 664         /**
 665          * Lets the given local Sone follow the Sone with the given ID.
 666          *
 667          * @param sone
 668          *              The local Sone that should follow another Sone
 669          * @param soneId
 670          *              The ID of the Sone to follow
 671          */
 672         public void followSone(Sone sone, String soneId) {
 673                 checkNotNull(sone, "sone must not be null");
 674                 checkNotNull(soneId, "soneId must not be null");
 675                 sone.addFriend(soneId);
 676                 synchronized (soneFollowingTimes) {
 677                         if (!soneFollowingTimes.containsKey(soneId)) {
 678                                 long now = System.currentTimeMillis();
 679                                 soneFollowingTimes.put(soneId, now);
 680                                 Optional<Sone> followedSone = getSone(soneId);
 681                                 if (!followedSone.isPresent()) {
 682                                         return;
 683                                 }
 684                                 for (Post post : followedSone.get().getPosts()) {
 685                                         if (post.getTime() < now) {
 686                                                 markPostKnown(post);
 687                                         }
 688                                 }
 689                                 for (PostReply reply : followedSone.get().getReplies()) {
 690                                         if (reply.getTime() < now) {
 691                                                 markReplyKnown(reply);
 692                                         }
 693                                 }
 694                         }
 695                 }
 696                 touchConfiguration();
 697         }
 698
 699         /**
 700          * Lets the given local Sone unfollow the Sone with the given ID.
 701          *
 702          * @param sone
 703          *              The local Sone that should unfollow another Sone
 704          * @param soneId
 705          *              The ID of the Sone being unfollowed
 706          */
 707         public void unfollowSone(Sone sone, String soneId) {
 708                 checkNotNull(sone, "sone must not be null");
 709                 checkNotNull(soneId, "soneId must not be null");
 710                 sone.removeFriend(soneId);
 711                 boolean unfollowedSoneStillFollowed = false;
 712                 for (Sone localSone : getLocalSones()) {
 713                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 714                 }
 715                 if (!unfollowedSoneStillFollowed) {
 716                         synchronized (soneFollowingTimes) {
 717                                 soneFollowingTimes.remove(soneId);
 718                         }
 719                 }
 720                 touchConfiguration();
 721         }
 722
 723         /**
 724          * Sets the trust value of the given origin Sone for the target Sone.
 725          *
 726          * @param origin
 727          *              The origin Sone
 728          * @param target
 729          *              The target Sone
 730          * @param trustValue
 731          *              The trust value (from {@code -100} to {@code 100})
 732          */
 733         public void setTrust(Sone origin, Sone target, int trustValue) {
 734                 checkNotNull(origin, "origin must not be null");
 735                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 736                 checkNotNull(target, "target must not be null");
 737                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 738                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 739         }
 740
 741         /**
 742          * Removes any trust assignment for the given target Sone.
 743          *
 744          * @param origin
 745          *              The trust origin
 746          * @param target
 747          *              The trust target
 748          */
 749         public void removeTrust(Sone origin, Sone target) {
 750                 checkNotNull(origin, "origin must not be null");
 751                 checkNotNull(target, "target must not be null");
 752                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 753                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 754         }
 755
 756         /**
 757          * Assigns the configured positive trust value for the given target.
 758          *
 759          * @param origin
 760          *              The trust origin
 761          * @param target
 762          *              The trust target
 763          */
 764         public void trustSone(Sone origin, Sone target) {
 765                 setTrust(origin, target, preferences.getPositiveTrust());
 766         }
 767
 768         /**
 769          * Assigns the configured negative trust value for the given target.
 770          *
 771          * @param origin
 772          *              The trust origin
 773          * @param target
 774          *              The trust target
 775          */
 776         public void distrustSone(Sone origin, Sone target) {
 777                 setTrust(origin, target, preferences.getNegativeTrust());
 778         }
 779
 780         /**
 781          * Removes the trust assignment for the given target.
 782          *
 783          * @param origin
 784          *              The trust origin
 785          * @param target
 786          *              The trust target
 787          */
 788         public void untrustSone(Sone origin, Sone target) {
 789                 removeTrust(origin, target);
 790         }
 791
 792         /**
 793          * Updates the stored Sone with the given Sone.
 794          *
 795          * @param sone
 796          *              The updated Sone
 797          */
 798         public void updateSone(Sone sone) {
 799                 updateSone(sone, false);
 800         }
 801
 802         /**
 803          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 804          * {@code true}, an older Sone than the current Sone can be given to restore an
 805          * old state.
 806          *
 807          * @param sone
 808          *              The Sone to update
 809          * @param soneRescueMode
 810          *              {@code true} if the stored Sone should be updated regardless of the age of
 811          *              the given Sone
 812          */
 813         public void updateSone(Sone sone, boolean soneRescueMode) {
 814                 Optional<Sone> storedSone = getSone(sone.getId());
 815                 if (storedSone.isPresent()) {
 816                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 817                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 818                                 return;
 819                         }
 820                         /* find removed posts. */
 821                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 822                         for (Post oldPost : existingPosts) {
 823                                 if (!sone.getPosts().contains(oldPost)) {
 824                                         eventBus.post(new PostRemovedEvent(oldPost));
 825                                 }
 826                         }
 827                         /* find new posts. */
 828                         for (Post newPost : sone.getPosts()) {
 829                                 if (existingPosts.contains(newPost)) {
 830                                         continue;
 831                                 }
 832                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 833                                         newPost.setKnown(true);
 834                                 } else if (!newPost.isKnown()) {
 835                                         eventBus.post(new NewPostFoundEvent(newPost));
 836                                 }
 837                         }
 838                         /* store posts. */
 839                         database.storePosts(sone, sone.getPosts());
 840                         if (!soneRescueMode) {
 841                                 for (PostReply reply : storedSone.get().getReplies()) {
 842                                         if (!sone.getReplies().contains(reply)) {
 843                                                 eventBus.post(new PostReplyRemovedEvent(reply));
 844                                         }
 845                                 }
 846                         }
 847                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 848                         for (PostReply reply : sone.getReplies()) {
 849                                 if (storedReplies.contains(reply)) {
 850                                         continue;
 851                                 }
 852                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
 853                                         reply.setKnown(true);
 854                                 } else if (!reply.isKnown()) {
 855                                         eventBus.post(new NewPostReplyFoundEvent(reply));
 856                                 }
 857                         }
 858                         database.storePostReplies(sone, sone.getReplies());
 859                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
 860                                 database.removeAlbum(album);
 861                                 for (Image image : album.getImages()) {
 862                                         database.removeImage(image);
 863                                 }
 864                         }
 865                         for (Album album : sone.getRootAlbum().getAlbums()) {
 866                                 database.storeAlbum(album);
 867                                 for (Image image : album.getImages()) {
 868                                         database.storeImage(image);
 869                                 }
 870                         }
 871                         synchronized (sones) {
 872                                 sone.setOptions(storedSone.get().getOptions());
 873                                 sone.setKnown(storedSone.get().isKnown());
 874                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
 875                                 if (sone.isLocal()) {
 876                                         soneInserters.get(storedSone.get()).setSone(sone);
 877                                         touchConfiguration();
 878                                 }
 879                                 sones.put(sone.getId(), sone);
 880                         }
 881                 }
 882         }
 883
 884         /**
 885          * Deletes the given Sone. This will remove the Sone from the {@link
 886          * #getLocalSones() local Sones}, stop its {@link SoneInserter} and remove the
 887          * context from its identity.
 888          *
 889          * @param sone
 890          *              The Sone to delete
 891          */
 892         public void deleteSone(Sone sone) {
 893                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 894                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
 895                         return;
 896                 }
 897                 synchronized (sones) {
 898                         if (!getLocalSones().contains(sone)) {
 899                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
 900                                 return;
 901                         }
 902                         sones.remove(sone.getId());
 903                         SoneInserter soneInserter = soneInserters.remove(sone);
 904                         soneInserter.stop();
 905                 }
 906                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 907                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
 908                 try {
 909                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
 910                 } catch (ConfigurationException ce1) {
 911                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
 912                 }
 913         }
 914
 915         /**
 916          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
 917          * known} before, a {@link MarkSoneKnownEvent} is fired.
 918          *
 919          * @param sone
 920          *              The Sone to mark as known
 921          */
 922         public void markSoneKnown(Sone sone) {
 923                 if (!sone.isKnown()) {
 924                         sone.setKnown(true);
 925                         synchronized (knownSones) {
 926                                 knownSones.add(sone.getId());
 927                         }
 928                         eventBus.post(new MarkSoneKnownEvent(sone));
 929                         touchConfiguration();
 930                 }
 931         }
 932
 933         /**
 934          * Loads and updates the given Sone from the configuration. If any error is
 935          * encountered, loading is aborted and the given Sone is not changed.
 936          *
 937          * @param sone
 938          *              The Sone to load and update
 939          */
 940         public void loadSone(Sone sone) {
 941                 if (!sone.isLocal()) {
 942                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
 943                         return;
 944                 }
 945                 logger.info(String.format("Loading local Sone: %s", sone));
 946
 947                 /* initialize options. */
 948                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 949                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 950                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 951                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 952                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 953                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 954
 955                 /* load Sone. */
 956                 String sonePrefix = "Sone/" + sone.getId();
 957                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
 958                 if (soneTime == null) {
 959                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
 960                         return;
 961                 }
 962                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
 963
 964                 /* load profile. */
 965                 Profile profile = new Profile(sone);
 966                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
 967                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
 968                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
 969                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
 970                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
 971                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
 972
 973                 /* load profile fields. */
 974                 while (true) {
 975                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
 976                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
 977                         if (fieldName == null) {
 978                                 break;
 979                         }
 980                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
 981                         profile.addField(fieldName).setValue(fieldValue);
 982                 }
 983
 984                 /* load posts. */
 985                 Set<Post> posts = new HashSet<Post>();
 986                 while (true) {
 987                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
 988                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
 989                         if (postId == null) {
 990                                 break;
 991                         }
 992                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
 993                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
 994                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
 995                         if ((postTime == 0) || (postText == null)) {
 996                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
 997                                 return;
 998                         }
 999                         PostBuilder postBuilder = sone.newPostBuilder().withId(postId).withTime(postTime).withText(postText);
1000                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1001                                 postBuilder.to(of(postRecipientId));
1002                         }
1003                         posts.add(postBuilder.build(Optional.<PostCreated>absent()));
1004                 }
1005
1006                 /* load replies. */
1007                 Set<PostReply> replies = new HashSet<PostReply>();
1008                 while (true) {
1009                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1010                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1011                         if (replyId == null) {
1012                                 break;
1013                         }
1014                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1015                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1016                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1017                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1018                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1019                                 return;
1020                         }
1021                         PostReplyBuilder postReplyBuilder = sone.newPostReplyBuilder(postId).withId(replyId).withTime(replyTime).withText(replyText);
1022                         replies.add(postReplyBuilder.build(Optional.<PostReplyCreated>absent()));
1023                 }
1024
1025                 /* load post likes. */
1026                 Set<String> likedPostIds = new HashSet<String>();
1027                 while (true) {
1028                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1029                         if (likedPostId == null) {
1030                                 break;
1031                         }
1032                         likedPostIds.add(likedPostId);
1033                 }
1034
1035                 /* load reply likes. */
1036                 Set<String> likedReplyIds = new HashSet<String>();
1037                 while (true) {
1038                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1039                         if (likedReplyId == null) {
1040                                 break;
1041                         }
1042                         likedReplyIds.add(likedReplyId);
1043                 }
1044
1045                 /* load friends. */
1046                 Set<String> friends = new HashSet<String>();
1047                 while (true) {
1048                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1049                         if (friendId == null) {
1050                                 break;
1051                         }
1052                         friends.add(friendId);
1053                 }
1054
1055                 /* load albums. */
1056                 Map<String, Album> albums = Maps.newHashMap();
1057                 int albumCounter = 0;
1058                 while (true) {
1059                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1060                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1061                         if (albumId == null) {
1062                                 break;
1063                         }
1064                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1065                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1066                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1067                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1068                         if ((albumTitle == null) || (albumDescription == null)) {
1069                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1070                                 return;
1071                         }
1072                         Album parentAlbum = sone.getRootAlbum();
1073                         if (albumParentId != null) {
1074                                 parentAlbum = albums.get(albumParentId);
1075                         }
1076                         Album album = parentAlbum.newAlbumBuilder().withId(albumId).build().modify().setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId).update();
1077                         albums.put(album.getId(), album);
1078                 }
1079
1080                 /* load images. */
1081                 int imageCounter = 0;
1082                 while (true) {
1083                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1084                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1085                         if (imageId == null) {
1086                                 break;
1087                         }
1088                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1089                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1090                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1091                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1092                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1093                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1094                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1095                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1096                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1097                                 return;
1098                         }
1099                         Album album = albums.get(albumId);
1100                         if (album == null) {
1101                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1102                                 return;
1103                         }
1104                         album.newImageBuilder().withId(imageId).created(creationTime).at(key).sized(width, height).build(Optional.<ImageCreated>absent()).modify().setTitle(title).setDescription(description).update();
1105                 }
1106
1107                 /* load avatar. */
1108                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1109                 if (avatarId != null) {
1110                         profile.setAvatar(getImage(avatarId).orNull());
1111                 }
1112
1113                 /* load options. */
1114                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1115                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1116                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1117                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1118                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1119                 sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1120
1121                 /* if we’re still here, Sone was loaded successfully. */
1122                 synchronized (sone) {
1123                         sone.setTime(soneTime);
1124                         sone.setProfile(profile);
1125                         sone.setPosts(posts);
1126                         sone.setReplies(replies);
1127                         sone.setLikePostIds(likedPostIds);
1128                         sone.setLikeReplyIds(likedReplyIds);
1129                         for (String friendId : friends) {
1130                                 followSone(sone, friendId);
1131                         }
1132                         for (Album album : sone.getRootAlbum().getAlbums()) {
1133                                 album.remove();
1134                         }
1135                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1136                 }
1137                 synchronized (knownSones) {
1138                         for (String friend : friends) {
1139                                 knownSones.add(friend);
1140                         }
1141                 }
1142                 database.storePosts(sone, posts);
1143                 for (Post post : posts) {
1144                         post.setKnown(true);
1145                 }
1146                 database.storePostReplies(sone, replies);
1147                 for (PostReply reply : replies) {
1148                         reply.setKnown(true);
1149                 }
1150
1151                 logger.info(String.format("Sone loaded successfully: %s", sone));
1152         }
1153
1154         /**
1155          * Deletes the given post.
1156          *
1157          * @param post
1158          *              The post to delete
1159          */
1160         public void deletePost(Post post) {
1161                 if (!post.getSone().isLocal()) {
1162                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1163                         return;
1164                 }
1165                 database.removePost(post);
1166                 eventBus.post(new PostRemovedEvent(post));
1167                 markPostKnown(post);
1168                 touchConfiguration();
1169         }
1170
1171         /**
1172          * Marks the given post as known, if it is currently not a known post
1173          * (according to {@link Post#isKnown()}).
1174          *
1175          * @param post
1176          *              The post to mark as known
1177          */
1178         public void markPostKnown(Post post) {
1179                 post.setKnown(true);
1180                 eventBus.post(new MarkPostKnownEvent(post));
1181                 touchConfiguration();
1182                 for (PostReply reply : getReplies(post.getId())) {
1183                         markReplyKnown(reply);
1184                 }
1185         }
1186
1187         /**
1188          * Bookmarks the post with the given ID.
1189          *
1190          * @param id
1191          *              The ID of the post to bookmark
1192          */
1193         public void bookmarkPost(String id) {
1194                 synchronized (bookmarkedPosts) {
1195                         bookmarkedPosts.add(id);
1196                 }
1197         }
1198
1199         /**
1200          * Removes the given post from the bookmarks.
1201          *
1202          * @param post
1203          *              The post to unbookmark
1204          */
1205         public void unbookmark(Post post) {
1206                 unbookmarkPost(post.getId());
1207         }
1208
1209         /**
1210          * Removes the post with the given ID from the bookmarks.
1211          *
1212          * @param id
1213          *              The ID of the post to unbookmark
1214          */
1215         public void unbookmarkPost(String id) {
1216                 synchronized (bookmarkedPosts) {
1217                         bookmarkedPosts.remove(id);
1218                 }
1219         }
1220
1221         /**
1222          * Deletes the given reply.
1223          *
1224          * @param reply
1225          *              The reply to delete
1226          */
1227         public void deleteReply(PostReply reply) {
1228                 Sone sone = reply.getSone();
1229                 if (!sone.isLocal()) {
1230                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1231                         return;
1232                 }
1233                 database.removePostReply(reply);
1234                 markReplyKnown(reply);
1235                 sone.removeReply(reply);
1236                 touchConfiguration();
1237         }
1238
1239         /**
1240          * Marks the given reply as known, if it is currently not a known reply
1241          * (according to {@link Reply#isKnown()}).
1242          *
1243          * @param reply
1244          *              The reply to mark as known
1245          */
1246         public void markReplyKnown(PostReply reply) {
1247                 boolean previouslyKnown = reply.isKnown();
1248                 reply.setKnown(true);
1249                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1250                 if (!previouslyKnown) {
1251                         touchConfiguration();
1252                 }
1253         }
1254
1255         /**
1256          * Creates a new image.
1257          *
1258          * @param sone
1259          *              The Sone creating the image
1260          * @param album
1261          *              The album the image will be inserted into
1262          * @param temporaryImage
1263          *              The temporary image to create the image from
1264          * @return The newly created image
1265          */
1266         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1267                 checkNotNull(sone, "sone must not be null");
1268                 checkNotNull(album, "album must not be null");
1269                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1270                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1271                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1272                 Image image = album.newImageBuilder().withId(temporaryImage.getId()).sized(temporaryImage.getWidth(), temporaryImage.getHeight()).build(imageCreated());
1273                 imageInserter.insertImage(temporaryImage, image);
1274                 return image;
1275         }
1276
1277         /**
1278          * Deletes the given image. This method will also delete a matching temporary
1279          * image.
1280          *
1281          * @param image
1282          *              The image to delete
1283          * @see #deleteTemporaryImage(String)
1284          */
1285         public void deleteImage(Image image) {
1286                 checkNotNull(image, "image must not be null");
1287                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1288                 deleteTemporaryImage(image.getId());
1289                 image.remove();
1290                 touchConfiguration();
1291         }
1292
1293         /**
1294          * Creates a new temporary image.
1295          *
1296          * @param mimeType
1297          *              The MIME type of the temporary image
1298          * @param imageData
1299          *              The encoded data of the image
1300          * @return The temporary image
1301          */
1302         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData, int width, int height) {
1303                 TemporaryImage temporaryImage = new TemporaryImage(mimeType, imageData, width, height);
1304                 synchronized (temporaryImages) {
1305                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1306                 }
1307                 return temporaryImage;
1308         }
1309
1310         /**
1311          * Deletes the temporary image with the given ID.
1312          *
1313          * @param imageId
1314          *              The ID of the temporary image to delete
1315          */
1316         public void deleteTemporaryImage(String imageId) {
1317                 checkNotNull(imageId, "imageId must not be null");
1318                 synchronized (temporaryImages) {
1319                         temporaryImages.remove(imageId);
1320                 }
1321                 Optional<Image> image = getImage(imageId);
1322                 if (image.isPresent()) {
1323                         imageInserter.cancelImageInsert(image.get());
1324                 }
1325         }
1326
1327         /**
1328          * Notifies the core that the configuration, either of the core or of a single
1329          * local Sone, has changed, and that the configuration should be saved.
1330          */
1331         public void touchConfiguration() {
1332                 lastConfigurationUpdate = System.currentTimeMillis();
1333         }
1334
1335         //
1336         // SERVICE METHODS
1337         //
1338
1339         @Override
1340         public void serviceStart() {
1341                 loadConfiguration();
1342                 updateChecker.start();
1343                 identityManager.start();
1344                 webOfTrustUpdater.init();
1345                 webOfTrustUpdater.start();
1346                 database.start();
1347         }
1348
1349         @Override
1350         public void serviceRun() {
1351                 long lastSaved = System.currentTimeMillis();
1352                 while (!shouldStop()) {
1353                         sleep(1000);
1354                         long now = System.currentTimeMillis();
1355                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1356                                 for (Sone localSone : getLocalSones()) {
1357                                         saveSone(localSone);
1358                                 }
1359                                 saveConfiguration();
1360                                 lastSaved = now;
1361                         }
1362                 }
1363         }
1364
1365         @Override
1366         public void serviceStop() {
1367                 localElementTicker.shutdownNow();
1368                 synchronized (sones) {
1369                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1370                                 soneInserter.getValue().stop();
1371                                 saveSone(soneInserter.getKey());
1372                         }
1373                 }
1374                 saveConfiguration();
1375                 database.stop();
1376                 webOfTrustUpdater.stop();
1377                 updateChecker.stop();
1378                 soneDownloader.stop();
1379                 soneDownloaders.shutdown();
1380                 identityManager.stop();
1381         }
1382
1383         //
1384         // PRIVATE METHODS
1385         //
1386
1387         /**
1388          * Saves the given Sone. This will persist all local settings for the given
1389          * Sone, such as the friends list and similar, private options.
1390          *
1391          * @param sone
1392          *              The Sone to save
1393          */
1394         private synchronized void saveSone(Sone sone) {
1395                 if (!sone.isLocal()) {
1396                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1397                         return;
1398                 }
1399                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1400                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1401                         return;
1402                 }
1403
1404                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1405                 try {
1406                         /* save Sone into configuration. */
1407                         String sonePrefix = "Sone/" + sone.getId();
1408                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1409                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1410
1411                         /* save profile. */
1412                         Profile profile = sone.getProfile();
1413                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1414                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1415                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1416                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1417                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1418                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1419                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1420
1421                         /* save profile fields. */
1422                         int fieldCounter = 0;
1423                         for (Field profileField : profile.getFields()) {
1424                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1425                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1426                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1427                         }
1428                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1429
1430                         /* save posts. */
1431                         int postCounter = 0;
1432                         for (Post post : sone.getPosts()) {
1433                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1434                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1435                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1436                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1437                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1438                         }
1439                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1440
1441                         /* save replies. */
1442                         int replyCounter = 0;
1443                         for (PostReply reply : sone.getReplies()) {
1444                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1445                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1446                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1447                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1448                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1449                         }
1450                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1451
1452                         /* save post likes. */
1453                         int postLikeCounter = 0;
1454                         for (String postId : sone.getLikedPostIds()) {
1455                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1456                         }
1457                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1458
1459                         /* save reply likes. */
1460                         int replyLikeCounter = 0;
1461                         for (String replyId : sone.getLikedReplyIds()) {
1462                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1463                         }
1464                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1465
1466                         /* save friends. */
1467                         int friendCounter = 0;
1468                         for (String friendId : sone.getFriends()) {
1469                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1470                         }
1471                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1472
1473                         /* save albums. first, collect in a flat structure, top-level first. */
1474                         List<Album> albums = from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1475
1476                         int albumCounter = 0;
1477                         for (Album album : albums) {
1478                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1479                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1480                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1481                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1482                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1483                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage().transform(GET_ID).orNull());
1484                         }
1485                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1486
1487                         /* save images. */
1488                         int imageCounter = 0;
1489                         for (Album album : albums) {
1490                                 for (Image image : album.getImages()) {
1491                                         if (!image.isInserted()) {
1492                                                 continue;
1493                                         }
1494                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1495                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1496                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1497                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1498                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1499                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1500                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1501                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1502                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1503                                 }
1504                         }
1505                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1506
1507                         /* save options. */
1508                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1509                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1510                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1511                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1512                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1513                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars>getEnumOption("ShowCustomAvatars").get().name());
1514
1515                         configuration.save();
1516
1517                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1518
1519                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1520                 } catch (ConfigurationException ce1) {
1521                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1522                 }
1523         }
1524
1525         /** Saves the current options. */
1526         private void saveConfiguration() {
1527                 synchronized (configuration) {
1528                         if (storingConfiguration) {
1529                                 logger.log(Level.FINE, "Already storing configuration…");
1530                                 return;
1531                         }
1532                         storingConfiguration = true;
1533                 }
1534
1535                 /* store the options first. */
1536                 try {
1537                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1538                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1539                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1540                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1541                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1542                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1543                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1544                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1545                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1546                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1547                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1548                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1549
1550                         /* save known Sones. */
1551                         int soneCounter = 0;
1552                         synchronized (knownSones) {
1553                                 for (String knownSoneId : knownSones) {
1554                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1555                                 }
1556                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1557                         }
1558
1559                         /* save Sone following times. */
1560                         soneCounter = 0;
1561                         synchronized (soneFollowingTimes) {
1562                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1563                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1564                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1565                                         ++soneCounter;
1566                                 }
1567                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1568                         }
1569
1570                         /* save known posts. */
1571                         database.save();
1572
1573                         /* save bookmarked posts. */
1574                         int bookmarkedPostCounter = 0;
1575                         synchronized (bookmarkedPosts) {
1576                                 for (String bookmarkedPostId : bookmarkedPosts) {
1577                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1578                                 }
1579                         }
1580                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1581
1582                         /* now save it. */
1583                         configuration.save();
1584
1585                 } catch (ConfigurationException ce1) {
1586                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1587                 } catch (DatabaseException de1) {
1588                         logger.log(Level.SEVERE, "Could not save database!", de1);
1589                 } finally {
1590                         synchronized (configuration) {
1591                                 storingConfiguration = false;
1592                         }
1593                 }
1594         }
1595
1596         /** Loads the configuration. */
1597         private void loadConfiguration() {
1598                 /* create options. */
1599                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
1600
1601                         @Override
1602                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1603                                 SoneInserter.setInsertionDelay(newValue);
1604                         }
1605
1606                 }));
1607                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1608                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1609                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1610                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer>or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1611                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1612                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1613                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1614                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1615                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
1616
1617                         @Override
1618                         @SuppressWarnings("synthetic-access")
1619                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
1620                                 fcpInterface.setActive(newValue);
1621                         }
1622                 }));
1623                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
1624
1625                         @Override
1626                         @SuppressWarnings("synthetic-access")
1627                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
1628                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
1629                         }
1630
1631                 }));
1632
1633                 loadConfigurationValue("InsertionDelay");
1634                 loadConfigurationValue("PostsPerPage");
1635                 loadConfigurationValue("ImagesPerPage");
1636                 loadConfigurationValue("CharactersPerPost");
1637                 loadConfigurationValue("PostCutOffLength");
1638                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1639                 loadConfigurationValue("PositiveTrust");
1640                 loadConfigurationValue("NegativeTrust");
1641                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1642                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1643                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1644
1645                 /* load known Sones. */
1646                 int soneCounter = 0;
1647                 while (true) {
1648                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1649                         if (knownSoneId == null) {
1650                                 break;
1651                         }
1652                         synchronized (knownSones) {
1653                                 knownSones.add(knownSoneId);
1654                         }
1655                 }
1656
1657                 /* load Sone following times. */
1658                 soneCounter = 0;
1659                 while (true) {
1660                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1661                         if (soneId == null) {
1662                                 break;
1663                         }
1664                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1665                         synchronized (soneFollowingTimes) {
1666                                 soneFollowingTimes.put(soneId, time);
1667                         }
1668                         ++soneCounter;
1669                 }
1670
1671                 /* load bookmarked posts. */
1672                 int bookmarkedPostCounter = 0;
1673                 while (true) {
1674                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1675                         if (bookmarkedPostId == null) {
1676                                 break;
1677                         }
1678                         synchronized (bookmarkedPosts) {
1679                                 bookmarkedPosts.add(bookmarkedPostId);
1680                         }
1681                 }
1682
1683         }
1684
1685         /**
1686          * Loads an {@link Integer} configuration value for the option with the given
1687          * name, logging validation failures.
1688          *
1689          * @param optionName
1690          *              The name of the option to load
1691          */
1692         private void loadConfigurationValue(String optionName) {
1693                 try {
1694                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1695                 } catch (IllegalArgumentException iae1) {
1696                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1697                 }
1698         }
1699
1700         /**
1701          * Notifies the core that a new {@link OwnIdentity} was added.
1702          *
1703          * @param ownIdentityAddedEvent
1704          *              The event
1705          */
1706         @Subscribe
1707         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1708                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1709                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1710                 if (ownIdentity.hasContext("Sone")) {
1711                         addLocalSone(ownIdentity);
1712                 }
1713         }
1714
1715         /**
1716          * Notifies the core that an {@link OwnIdentity} was removed.
1717          *
1718          * @param ownIdentityRemovedEvent
1719          *              The event
1720          */
1721         @Subscribe
1722         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1723                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1724                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
1725                 trustedIdentities.removeAll(ownIdentity);
1726         }
1727
1728         /**
1729          * Notifies the core that a new {@link Identity} was added.
1730          *
1731          * @param identityAddedEvent
1732          *              The event
1733          */
1734         @Subscribe
1735         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
1736                 Identity identity = identityAddedEvent.identity();
1737                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
1738                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
1739                 addRemoteSone(identity);
1740         }
1741
1742         /**
1743          * Notifies the core that an {@link Identity} was updated.
1744          *
1745          * @param identityUpdatedEvent
1746          *              The event
1747          */
1748         @Subscribe
1749         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
1750                 final Identity identity = identityUpdatedEvent.identity();
1751                 soneDownloaders.execute(new Runnable() {
1752
1753                         @Override
1754                         @SuppressWarnings("synthetic-access")
1755                         public void run() {
1756                                 Optional<Sone> sone = getRemoteSone(identity.getId());
1757                                 sone.get().setIdentity(identity);
1758                                 sone.get().setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.get().getLatestEdition()));
1759                                 soneDownloader.addSone(sone.get());
1760                                 soneDownloader.fetchSone(sone.get());
1761                         }
1762                 });
1763         }
1764
1765         /**
1766          * Notifies the core that an {@link Identity} was removed.
1767          *
1768          * @param identityRemovedEvent
1769          *              The event
1770          */
1771         @Subscribe
1772         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
1773                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
1774                 Identity identity = identityRemovedEvent.identity();
1775                 trustedIdentities.remove(ownIdentity, identity);
1776                 boolean foundIdentity = false;
1777                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
1778                         if (trustedIdentity.getKey().equals(ownIdentity)) {
1779                                 continue;
1780                         }
1781                         if (trustedIdentity.getValue().contains(identity)) {
1782                                 foundIdentity = true;
1783                         }
1784                 }
1785                 if (foundIdentity) {
1786                         /* some local identity still trusts this identity, don’t remove. */
1787                         return;
1788                 }
1789                 Optional<Sone> sone = getSone(identity.getId());
1790                 if (!sone.isPresent()) {
1791                         /* TODO - we don’t have the Sone anymore. should this happen? */
1792                         return;
1793                 }
1794                 database.removePosts(sone.get());
1795                 for (Post post : sone.get().getPosts()) {
1796                         eventBus.post(new PostRemovedEvent(post));
1797                 }
1798                 database.removePostReplies(sone.get());
1799                 for (PostReply reply : sone.get().getReplies()) {
1800                         eventBus.post(new PostReplyRemovedEvent(reply));
1801                 }
1802                 synchronized (sones) {
1803                         sones.remove(identity.getId());
1804                 }
1805                 eventBus.post(new SoneRemovedEvent(sone.get()));
1806         }
1807
1808         /**
1809          * Deletes the temporary image.
1810          *
1811          * @param imageInsertFinishedEvent
1812          *              The event
1813          */
1814         @Subscribe
1815         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
1816                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
1817                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
1818                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
1819                 touchConfiguration();
1820         }
1821
1822         public Optional<PostCreated> postCreated() {
1823                 return Optional.<PostCreated>of(new PostCreated() {
1824                         @Override
1825                         public void postCreated(final Post post) {
1826                                 if (post.isKnown()) {
1827                                         return;
1828                                 }
1829                                 eventBus.post(new NewPostFoundEvent(post));
1830                                 if (post.getSone().isLocal()) {
1831                                         localElementTicker.schedule(new Runnable() {
1832                                                 @Override
1833                                                 public void run() {
1834                                                         markPostKnown(post);
1835                                                 }
1836                                         }, 10, TimeUnit.SECONDS);
1837                                 }
1838                         }
1839                 });
1840         }
1841
1842         public Optional<PostReplyCreated> postReplyCreated() {
1843                 return Optional.<PostReplyCreated>of(new PostReplyCreated() {
1844                         @Override
1845                         public void postReplyCreated(final PostReply postReply) {
1846                                 if (postReply.isKnown()) {
1847                                         return;
1848                                 }
1849                                 eventBus.post(new NewPostReplyFoundEvent(postReply));
1850                                 if (postReply.getSone().isLocal()) {
1851                                         localElementTicker.schedule(new Runnable() {
1852
1853                                                 /**
1854                                                  * {@inheritDoc}
1855                                                  */
1856                                                 @Override
1857                                                 public void run() {
1858                                                         markReplyKnown(postReply);
1859                                                 }
1860                                         }, 10, TimeUnit.SECONDS);
1861                                 }
1862                         }
1863                 });
1864         }
1865
1866         public Optional<ImageCreated> imageCreated() {
1867                 return Optional.<ImageCreated>of(new ImageCreated() {
1868                         @Override
1869                         public void imageCreated(Image image) {
1870                                 /* nothing happens here yet. */
1871                         }
1872                 });
1873         }
1874
1875 }