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