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.Preconditions.checkArgument;
  21 import static com.google.common.base.Preconditions.checkNotNull;
  22 import static com.google.common.base.Predicates.not;
  23 import static net.pterodactylus.sone.data.Sone.LOCAL_SONE_FILTER;
  24
  25 import java.net.MalformedURLException;
  26 import java.util.ArrayList;
  27 import java.util.Collection;
  28 import java.util.HashMap;
  29 import java.util.HashSet;
  30 import java.util.List;
  31 import java.util.Map;
  32 import java.util.Map.Entry;
  33 import java.util.Set;
  34 import java.util.concurrent.ExecutorService;
  35 import java.util.concurrent.Executors;
  36 import java.util.concurrent.ScheduledExecutorService;
  37 import java.util.concurrent.TimeUnit;
  38 import java.util.logging.Level;
  39 import java.util.logging.Logger;
  40
  41 import net.pterodactylus.sone.core.Options.DefaultOption;
  42 import net.pterodactylus.sone.core.SoneInserter.SetInsertionDelay;
  43 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  46 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  47 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  49 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  50 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  51 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  52 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  53 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  54 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  55 import net.pterodactylus.sone.data.Album;
  56 import net.pterodactylus.sone.data.Client;
  57 import net.pterodactylus.sone.data.Image;
  58 import net.pterodactylus.sone.data.Post;
  59 import net.pterodactylus.sone.data.PostReply;
  60 import net.pterodactylus.sone.data.Profile;
  61 import net.pterodactylus.sone.data.Profile.Field;
  62 import net.pterodactylus.sone.data.Reply;
  63 import net.pterodactylus.sone.data.Sone;
  64 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  65 import net.pterodactylus.sone.data.Sone.SoneStatus;
  66 import net.pterodactylus.sone.data.SoneImpl;
  67 import net.pterodactylus.sone.data.TemporaryImage;
  68 import net.pterodactylus.sone.database.Database;
  69 import net.pterodactylus.sone.database.DatabaseException;
  70 import net.pterodactylus.sone.database.PostBuilder;
  71 import net.pterodactylus.sone.database.PostProvider;
  72 import net.pterodactylus.sone.database.PostReplyBuilder;
  73 import net.pterodactylus.sone.database.PostReplyProvider;
  74 import net.pterodactylus.sone.database.SoneProvider;
  75 import net.pterodactylus.sone.fcp.FcpInterface;
  76 import net.pterodactylus.sone.freenet.wot.Identity;
  77 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  78 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  83 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  84 import net.pterodactylus.sone.main.SonePlugin;
  85 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  86 import net.pterodactylus.util.config.Configuration;
  87 import net.pterodactylus.util.config.ConfigurationException;
  88 import net.pterodactylus.util.logging.Logging;
  89 import net.pterodactylus.util.number.Numbers;
  90 import net.pterodactylus.util.service.AbstractService;
  91 import net.pterodactylus.util.thread.NamedThreadFactory;
  92
  93 import com.google.common.annotations.VisibleForTesting;
  94 import com.google.common.base.Optional;
  95 import com.google.common.base.Predicates;
  96 import com.google.common.collect.FluentIterable;
  97 import com.google.common.collect.HashMultimap;
  98 import com.google.common.collect.ImmutableSet;
  99 import com.google.common.collect.Multimap;
 100 import com.google.common.collect.Multimaps;
 101 import com.google.common.eventbus.EventBus;
 102 import com.google.common.eventbus.Subscribe;
 103 import com.google.inject.Inject;
 104
 105 import freenet.keys.FreenetURI;
 106
 107 /**
 108  * The Sone core.
 109  *
 110  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 111  */
 112 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 113
 114         /** The logger. */
 115         private static final Logger logger = Logging.getLogger(Core.class);
 116
 117         /** The start time. */
 118         private final long startupTime = System.currentTimeMillis();
 119
 120         /** The options. */
 121         private final Options options = new Options();
 122
 123         /** The preferences. */
 124         private final Preferences preferences = new Preferences(options);
 125
 126         /** The event bus. */
 127         private final EventBus eventBus;
 128
 129         /** The configuration. */
 130         private final Configuration configuration;
 131
 132         /** Whether we’re currently saving the configuration. */
 133         private boolean storingConfiguration = false;
 134
 135         /** The identity manager. */
 136         private final IdentityManager identityManager;
 137
 138         /** Interface to freenet. */
 139         private final FreenetInterface freenetInterface;
 140
 141         /** The Sone downloader. */
 142         private final SoneDownloader soneDownloader;
 143
 144         /** The image inserter. */
 145         private final ImageInserter imageInserter;
 146
 147         /** Sone downloader thread-pool. */
 148         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 149
 150         /** The update checker. */
 151         private final UpdateChecker updateChecker;
 152
 153         /** The trust updater. */
 154         private final WebOfTrustUpdater webOfTrustUpdater;
 155
 156         /** The FCP interface. */
 157         private volatile FcpInterface fcpInterface;
 158
 159         /** The times Sones were followed. */
 160         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 161
 162         /** Locked local Sones. */
 163         /* synchronize on itself. */
 164         private final Set<Sone> lockedSones = new HashSet<Sone>();
 165
 166         /** Sone inserters. */
 167         /* synchronize access on this on sones. */
 168         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 169
 170         /** Sone rescuers. */
 171         /* synchronize access on this on sones. */
 172         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 173
 174         /** All Sones. */
 175         /* synchronize access on this on itself. */
 176         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 177
 178         /** All known Sones. */
 179         private final Set<String> knownSones = new HashSet<String>();
 180
 181         /** The post database. */
 182         private final Database database;
 183
 184         /** All bookmarked posts. */
 185         /* synchronize access on itself. */
 186         private final Set<String> bookmarkedPosts = new HashSet<String>();
 187
 188         /** Trusted identities, sorted by own identities. */
 189         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 190
 191         /** All temporary images. */
 192         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 193
 194         /** Ticker for threads that mark own elements as known. */
 195         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 196
 197         /** The time the configuration was last touched. */
 198         private volatile long lastConfigurationUpdate;
 199
 200         /**
 201          * Creates a new core.
 202          *
 203          * @param configuration
 204          *            The configuration of the core
 205          * @param freenetInterface
 206          *            The freenet interface
 207          * @param identityManager
 208          *            The identity manager
 209          * @param webOfTrustUpdater
 210          *            The WebOfTrust updater
 211          * @param eventBus
 212          *            The event bus
 213          * @param database
 214          *            The database
 215          */
 216         @Inject
 217         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 218                 super("Sone Core");
 219                 this.configuration = configuration;
 220                 this.freenetInterface = freenetInterface;
 221                 this.identityManager = identityManager;
 222                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 223                 this.imageInserter = new ImageInserter(freenetInterface);
 224                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 225                 this.webOfTrustUpdater = webOfTrustUpdater;
 226                 this.eventBus = eventBus;
 227                 this.database = database;
 228         }
 229
 230         //
 231         // ACCESSORS
 232         //
 233
 234         /**
 235          * Returns the time Sone was started.
 236          *
 237          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 238          */
 239         public long getStartupTime() {
 240                 return startupTime;
 241         }
 242
 243         /**
 244          * Returns the options used by the core.
 245          *
 246          * @return The options of the core
 247          */
 248         public Preferences getPreferences() {
 249                 return preferences;
 250         }
 251
 252         /**
 253          * Returns the identity manager used by the core.
 254          *
 255          * @return The identity manager
 256          */
 257         public IdentityManager getIdentityManager() {
 258                 return identityManager;
 259         }
 260
 261         /**
 262          * Returns the update checker.
 263          *
 264          * @return The update checker
 265          */
 266         public UpdateChecker getUpdateChecker() {
 267                 return updateChecker;
 268         }
 269
 270         /**
 271          * Sets the FCP interface to use.
 272          *
 273          * @param fcpInterface
 274          *            The FCP interface to use
 275          */
 276         public void setFcpInterface(FcpInterface fcpInterface) {
 277                 this.fcpInterface = fcpInterface;
 278         }
 279
 280         /**
 281          * Returns the Sone rescuer for the given local Sone.
 282          *
 283          * @param sone
 284          *            The local Sone to get the rescuer for
 285          * @return The Sone rescuer for the given Sone
 286          */
 287         public SoneRescuer getSoneRescuer(Sone sone) {
 288                 checkNotNull(sone, "sone must not be null");
 289                 checkArgument(sone.isLocal(), "sone must be local");
 290                 synchronized (sones) {
 291                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 292                         if (soneRescuer == null) {
 293                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 294                                 soneRescuers.put(sone, soneRescuer);
 295                                 soneRescuer.start();
 296                         }
 297                         return soneRescuer;
 298                 }
 299         }
 300
 301         /**
 302          * Returns whether the given Sone is currently locked.
 303          *
 304          * @param sone
 305          *            The sone to check
 306          * @return {@code true} if the Sone is locked, {@code false} if it is not
 307          */
 308         public boolean isLocked(Sone sone) {
 309                 synchronized (lockedSones) {
 310                         return lockedSones.contains(sone);
 311                 }
 312         }
 313
 314         /**
 315          * {@inheritDocs}
 316          */
 317         @Override
 318         public Collection<Sone> getSones() {
 319                 synchronized (sones) {
 320                         return ImmutableSet.copyOf(sones.values());
 321                 }
 322         }
 323
 324         /**
 325          * Returns the Sone with the given ID, regardless whether it’s local or
 326          * remote.
 327          *
 328          * @param id
 329          *            The ID of the Sone to get
 330          * @return The Sone with the given ID, or {@code null} if there is no such
 331          *         Sone
 332          */
 333         @Override
 334         public Optional<Sone> getSone(String id) {
 335                 synchronized (sones) {
 336                         return Optional.fromNullable(sones.get(id));
 337                 }
 338         }
 339
 340         /**
 341          * {@inheritDocs}
 342          */
 343         @Override
 344         public Collection<Sone> getLocalSones() {
 345                 synchronized (sones) {
 346                         return FluentIterable.from(sones.values()).filter(LOCAL_SONE_FILTER).toSet();
 347                 }
 348         }
 349
 350         /**
 351          * Returns the local Sone with the given ID, optionally creating a new Sone.
 352          *
 353          * @param id
 354          *            The ID of the Sone
 355          * @param create
 356          *            {@code true} to create a new Sone if none exists,
 357          *            {@code false} to return null if none exists
 358          * @return The Sone with the given ID, or {@code null}
 359          */
 360         public Sone getLocalSone(String id, boolean create) {
 361                 synchronized (sones) {
 362                         Sone sone = sones.get(id);
 363                         if ((sone == null) && create) {
 364                                 sone = new SoneImpl(id, true);
 365                                 sones.put(id, sone);
 366                         }
 367                         if ((sone != null) && !sone.isLocal()) {
 368                                 sone = new SoneImpl(id, true);
 369                                 sones.put(id, sone);
 370                         }
 371                         return sone;
 372                 }
 373         }
 374
 375         /**
 376          * {@inheritDocs}
 377          */
 378         @Override
 379         public Collection<Sone> getRemoteSones() {
 380                 synchronized (sones) {
 381                         return FluentIterable.from(sones.values()).filter(not(LOCAL_SONE_FILTER)).toSet();
 382                 }
 383         }
 384
 385         /**
 386          * Returns the remote Sone with the given ID.
 387          *
 388          * @param id
 389          *            The ID of the remote Sone to get
 390          * @param create
 391          *            {@code true} to always create a Sone, {@code false} to return
 392          *            {@code null} if no Sone with the given ID exists
 393          * @return The Sone with the given ID
 394          */
 395         public Sone getRemoteSone(String id, boolean create) {
 396                 synchronized (sones) {
 397                         Sone sone = sones.get(id);
 398                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 399                                 sone = new SoneImpl(id, false);
 400                                 sones.put(id, sone);
 401                         }
 402                         return sone;
 403                 }
 404         }
 405
 406         /**
 407          * Returns whether the given Sone has been modified.
 408          *
 409          * @param sone
 410          *            The Sone to check for modifications
 411          * @return {@code true} if a modification has been detected in the Sone,
 412          *         {@code false} otherwise
 413          */
 414         public boolean isModifiedSone(Sone sone) {
 415                 return soneInserters.containsKey(sone) && soneInserters.get(sone).isModified();
 416         }
 417
 418         /**
 419          * Returns the time when the given was first followed by any local Sone.
 420          *
 421          * @param sone
 422          *            The Sone to get the time for
 423          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 424          *         been followed, or {@link Long#MAX_VALUE}
 425          */
 426         public long getSoneFollowingTime(Sone sone) {
 427                 synchronized (soneFollowingTimes) {
 428                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 429                 }
 430         }
 431
 432         /**
 433          * Returns whether the target Sone is trusted by the origin Sone.
 434          *
 435          * @param origin
 436          *            The origin Sone
 437          * @param target
 438          *            The target Sone
 439          * @return {@code true} if the target Sone is trusted by the origin Sone
 440          */
 441         public boolean isSoneTrusted(Sone origin, Sone target) {
 442                 checkNotNull(origin, "origin must not be null");
 443                 checkNotNull(target, "target must not be null");
 444                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 445                 return trustedIdentities.containsEntry(origin.getIdentity(), target.getIdentity());
 446         }
 447
 448         /**
 449          * Returns a post builder.
 450          *
 451          * @return A new post builder
 452          */
 453         public PostBuilder postBuilder() {
 454                 return database.newPostBuilder();
 455         }
 456
 457         /**
 458          * {@inheritDoc}
 459          */
 460         @Override
 461         public Optional<Post> getPost(String postId) {
 462                 return database.getPost(postId);
 463         }
 464
 465         /**
 466          * {@inheritDocs}
 467          */
 468         @Override
 469         public Collection<Post> getPosts(String soneId) {
 470                 return database.getPosts(soneId);
 471         }
 472
 473         /**
 474          * {@inheritDoc}
 475          */
 476         @Override
 477         public Collection<Post> getDirectedPosts(final String recipientId) {
 478                 checkNotNull(recipientId, "recipient must not be null");
 479                 return database.getDirectedPosts(recipientId);
 480         }
 481
 482         /**
 483          * Returns a post reply builder.
 484          *
 485          * @return A new post reply builder
 486          */
 487         public PostReplyBuilder postReplyBuilder() {
 488                 return database.newPostReplyBuilder();
 489         }
 490
 491         /**
 492          * {@inheritDoc}
 493          */
 494         @Override
 495         public Optional<PostReply> getPostReply(String replyId) {
 496                 return database.getPostReply(replyId);
 497         }
 498
 499         /**
 500          * {@inheritDoc}
 501          */
 502         @Override
 503         public List<PostReply> getReplies(final String postId) {
 504                 return database.getReplies(postId);
 505         }
 506
 507         /**
 508          * Returns all Sones that have liked the given post.
 509          *
 510          * @param post
 511          *            The post to get the liking Sones for
 512          * @return The Sones that like the given post
 513          */
 514         public Set<Sone> getLikes(Post post) {
 515                 Set<Sone> sones = new HashSet<Sone>();
 516                 for (Sone sone : getSones()) {
 517                         if (sone.getLikedPostIds().contains(post.getId())) {
 518                                 sones.add(sone);
 519                         }
 520                 }
 521                 return sones;
 522         }
 523
 524         /**
 525          * Returns all Sones that have liked the given reply.
 526          *
 527          * @param reply
 528          *            The reply to get the liking Sones for
 529          * @return The Sones that like the given reply
 530          */
 531         public Set<Sone> getLikes(PostReply reply) {
 532                 Set<Sone> sones = new HashSet<Sone>();
 533                 for (Sone sone : getSones()) {
 534                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 535                                 sones.add(sone);
 536                         }
 537                 }
 538                 return sones;
 539         }
 540
 541         /**
 542          * Returns whether the given post is bookmarked.
 543          *
 544          * @param post
 545          *            The post to check
 546          * @return {@code true} if the given post is bookmarked, {@code false}
 547          *         otherwise
 548          */
 549         public boolean isBookmarked(Post post) {
 550                 return isPostBookmarked(post.getId());
 551         }
 552
 553         /**
 554          * Returns whether the post with the given ID is bookmarked.
 555          *
 556          * @param id
 557          *            The ID of the post to check
 558          * @return {@code true} if the post with the given ID is bookmarked,
 559          *         {@code false} otherwise
 560          */
 561         public boolean isPostBookmarked(String id) {
 562                 synchronized (bookmarkedPosts) {
 563                         return bookmarkedPosts.contains(id);
 564                 }
 565         }
 566
 567         /**
 568          * Returns all currently known bookmarked posts.
 569          *
 570          * @return All bookmarked posts
 571          */
 572         public Set<Post> getBookmarkedPosts() {
 573                 Set<Post> posts = new HashSet<Post>();
 574                 synchronized (bookmarkedPosts) {
 575                         for (String bookmarkedPostId : bookmarkedPosts) {
 576                                 Optional<Post> post = getPost(bookmarkedPostId);
 577                                 if (post.isPresent()) {
 578                                         posts.add(post.get());
 579                                 }
 580                         }
 581                 }
 582                 return posts;
 583         }
 584
 585         /**
 586          * Returns the album with the given ID, creating a new album if no album
 587          * with the given ID can be found.
 588          *
 589          * @param albumId
 590          *            The ID of the album
 591          * @return The album with the given ID
 592          */
 593         public Album getAlbum(String albumId) {
 594                 return getAlbum(albumId, true);
 595         }
 596
 597         /**
 598          * Returns the album with the given ID, optionally creating a new album if
 599          * an album with the given ID can not be found.
 600          *
 601          * @param albumId
 602          *            The ID of the album
 603          * @param create
 604          *            {@code true} to create a new album if none exists for the
 605          *            given ID
 606          * @return The album with the given ID, or {@code null} if no album with the
 607          *         given ID exists and {@code create} is {@code false}
 608          */
 609         public Album getAlbum(String albumId, boolean create) {
 610                 Optional<Album> album = database.getAlbum(albumId);
 611                 if (album.isPresent()) {
 612                         return album.get();
 613                 }
 614                 if (!create) {
 615                         return null;
 616                 }
 617                 Album newAlbum = database.newAlbumBuilder().withId(albumId).build();
 618                 database.storeAlbum(newAlbum);
 619                 return newAlbum;
 620         }
 621
 622         /**
 623          * Returns the image with the given ID, creating it if necessary.
 624          *
 625          * @param imageId
 626          *            The ID of the image
 627          * @return The image with the given ID
 628          */
 629         public Image getImage(String imageId) {
 630                 return getImage(imageId, true);
 631         }
 632
 633         /**
 634          * Returns the image with the given ID, optionally creating it if it does
 635          * not exist.
 636          *
 637          * @param imageId
 638          *            The ID of the image
 639          * @param create
 640          *            {@code true} to create an image if none exists with the given
 641          *            ID
 642          * @return The image with the given ID, or {@code null} if none exists and
 643          *         none was created
 644          */
 645         public Image getImage(String imageId, boolean create) {
 646                 Optional<Image> image = database.getImage(imageId);
 647                 if (image.isPresent()) {
 648                         return image.get();
 649                 }
 650                 if (!create) {
 651                         return null;
 652                 }
 653                 Image newImage = database.newImageBuilder().withId(imageId).build();
 654                 database.storeImage(newImage);
 655                 return newImage;
 656         }
 657
 658         /**
 659          * Returns the temporary image with the given ID.
 660          *
 661          * @param imageId
 662          *            The ID of the temporary image
 663          * @return The temporary image, or {@code null} if there is no temporary
 664          *         image with the given ID
 665          */
 666         public TemporaryImage getTemporaryImage(String imageId) {
 667                 synchronized (temporaryImages) {
 668                         return temporaryImages.get(imageId);
 669                 }
 670         }
 671
 672         //
 673         // ACTIONS
 674         //
 675
 676         /**
 677          * Locks the given Sone. A locked Sone will not be inserted by
 678          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 679          * again.
 680          *
 681          * @param sone
 682          *            The sone to lock
 683          */
 684         public void lockSone(Sone sone) {
 685                 synchronized (lockedSones) {
 686                         if (lockedSones.add(sone)) {
 687                                 eventBus.post(new SoneLockedEvent(sone));
 688                         }
 689                 }
 690         }
 691
 692         /**
 693          * Unlocks the given Sone.
 694          *
 695          * @see #lockSone(Sone)
 696          * @param sone
 697          *            The sone to unlock
 698          */
 699         public void unlockSone(Sone sone) {
 700                 synchronized (lockedSones) {
 701                         if (lockedSones.remove(sone)) {
 702                                 eventBus.post(new SoneUnlockedEvent(sone));
 703                         }
 704                 }
 705         }
 706
 707         /**
 708          * Adds a local Sone from the given own identity.
 709          *
 710          * @param ownIdentity
 711          *            The own identity to create a Sone from
 712          * @return The added (or already existing) Sone
 713          */
 714         public Sone addLocalSone(OwnIdentity ownIdentity) {
 715                 if (ownIdentity == null) {
 716                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 717                         return null;
 718                 }
 719                 logger.info(String.format("Adding Sone from OwnIdentity: %s", ownIdentity));
 720                 synchronized (sones) {
 721                         final Sone sone;
 722                         try {
 723                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 724                         } catch (MalformedURLException mue1) {
 725                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 726                                 return null;
 727                         }
 728                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 729                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 730                         sone.setKnown(true);
 731                         /* TODO - load posts ’n stuff */
 732                         sones.put(ownIdentity.getId(), sone);
 733                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 734                         soneInserters.put(sone, soneInserter);
 735                         sone.setStatus(SoneStatus.idle);
 736                         loadSone(sone);
 737                         soneInserter.start();
 738                         return sone;
 739                 }
 740         }
 741
 742         /**
 743          * Creates a new Sone for the given own identity.
 744          *
 745          * @param ownIdentity
 746          *            The own identity to create a Sone for
 747          * @return The created Sone
 748          */
 749         public Sone createSone(OwnIdentity ownIdentity) {
 750                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 751                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 752                         return null;
 753                 }
 754                 Sone sone = addLocalSone(ownIdentity);
 755                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 756                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 757                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 758                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 759                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 760                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 761
 762                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 763                 touchConfiguration();
 764                 return sone;
 765         }
 766
 767         /**
 768          * Adds the Sone of the given identity.
 769          *
 770          * @param identity
 771          *            The identity whose Sone to add
 772          * @return The added or already existing Sone
 773          */
 774         public Sone addRemoteSone(Identity identity) {
 775                 if (identity == null) {
 776                         logger.log(Level.WARNING, "Given Identity is null!");
 777                         return null;
 778                 }
 779                 synchronized (sones) {
 780                         final Sone sone = getRemoteSone(identity.getId(), true);
 781                         if (sone.isLocal()) {
 782                                 return sone;
 783                         }
 784                         sone.setIdentity(identity);
 785                         boolean newSone = sone.getRequestUri() == null;
 786                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 787                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 788                         if (newSone) {
 789                                 synchronized (knownSones) {
 790                                         newSone = !knownSones.contains(sone.getId());
 791                                 }
 792                                 sone.setKnown(!newSone);
 793                                 if (newSone) {
 794                                         eventBus.post(new NewSoneFoundEvent(sone));
 795                                         for (Sone localSone : getLocalSones()) {
 796                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 797                                                         followSone(localSone, sone.getId());
 798                                                 }
 799                                         }
 800                                 }
 801                         }
 802                         soneDownloader.addSone(sone);
 803                         soneDownloaders.execute(soneDownloader.new FetchSone(sone));
 804                         return sone;
 805                 }
 806         }
 807
 808         /**
 809          * Lets the given local Sone follow the Sone with the given ID.
 810          *
 811          * @param sone
 812          *            The local Sone that should follow another Sone
 813          * @param soneId
 814          *            The ID of the Sone to follow
 815          */
 816         public void followSone(Sone sone, String soneId) {
 817                 checkNotNull(sone, "sone must not be null");
 818                 checkNotNull(soneId, "soneId must not be null");
 819                 sone.addFriend(soneId);
 820                 synchronized (soneFollowingTimes) {
 821                         if (!soneFollowingTimes.containsKey(soneId)) {
 822                                 long now = System.currentTimeMillis();
 823                                 soneFollowingTimes.put(soneId, now);
 824                                 Optional<Sone> followedSone = getSone(soneId);
 825                                 if (!followedSone.isPresent()) {
 826                                         return;
 827                                 }
 828                                 for (Post post : followedSone.get().getPosts()) {
 829                                         if (post.getTime() < now) {
 830                                                 markPostKnown(post);
 831                                         }
 832                                 }
 833                                 for (PostReply reply : followedSone.get().getReplies()) {
 834                                         if (reply.getTime() < now) {
 835                                                 markReplyKnown(reply);
 836                                         }
 837                                 }
 838                         }
 839                 }
 840                 touchConfiguration();
 841         }
 842
 843         /**
 844          * Lets the given local Sone unfollow the Sone with the given ID.
 845          *
 846          * @param sone
 847          *            The local Sone that should unfollow another Sone
 848          * @param soneId
 849          *            The ID of the Sone being unfollowed
 850          */
 851         public void unfollowSone(Sone sone, String soneId) {
 852                 checkNotNull(sone, "sone must not be null");
 853                 checkNotNull(soneId, "soneId must not be null");
 854                 sone.removeFriend(soneId);
 855                 boolean unfollowedSoneStillFollowed = false;
 856                 for (Sone localSone : getLocalSones()) {
 857                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 858                 }
 859                 if (!unfollowedSoneStillFollowed) {
 860                         synchronized (soneFollowingTimes) {
 861                                 soneFollowingTimes.remove(soneId);
 862                         }
 863                 }
 864                 touchConfiguration();
 865         }
 866
 867         /**
 868          * Sets the trust value of the given origin Sone for the target Sone.
 869          *
 870          * @param origin
 871          *            The origin Sone
 872          * @param target
 873          *            The target Sone
 874          * @param trustValue
 875          *            The trust value (from {@code -100} to {@code 100})
 876          */
 877         public void setTrust(Sone origin, Sone target, int trustValue) {
 878                 checkNotNull(origin, "origin must not be null");
 879                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 880                 checkNotNull(target, "target must not be null");
 881                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 882                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 883         }
 884
 885         /**
 886          * Removes any trust assignment for the given target Sone.
 887          *
 888          * @param origin
 889          *            The trust origin
 890          * @param target
 891          *            The trust target
 892          */
 893         public void removeTrust(Sone origin, Sone target) {
 894                 checkNotNull(origin, "origin must not be null");
 895                 checkNotNull(target, "target must not be null");
 896                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 897                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 898         }
 899
 900         /**
 901          * Assigns the configured positive trust value for the given target.
 902          *
 903          * @param origin
 904          *            The trust origin
 905          * @param target
 906          *            The trust target
 907          */
 908         public void trustSone(Sone origin, Sone target) {
 909                 setTrust(origin, target, preferences.getPositiveTrust());
 910         }
 911
 912         /**
 913          * Assigns the configured negative trust value for the given target.
 914          *
 915          * @param origin
 916          *            The trust origin
 917          * @param target
 918          *            The trust target
 919          */
 920         public void distrustSone(Sone origin, Sone target) {
 921                 setTrust(origin, target, preferences.getNegativeTrust());
 922         }
 923
 924         /**
 925          * Removes the trust assignment for the given target.
 926          *
 927          * @param origin
 928          *            The trust origin
 929          * @param target
 930          *            The trust target
 931          */
 932         public void untrustSone(Sone origin, Sone target) {
 933                 removeTrust(origin, target);
 934         }
 935
 936         /**
 937          * Updates the stored Sone with the given Sone.
 938          *
 939          * @param sone
 940          *            The updated Sone
 941          */
 942         public void updateSone(Sone sone) {
 943                 updateSone(sone, false);
 944         }
 945
 946         /**
 947          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 948          * {@code true}, an older Sone than the current Sone can be given to restore
 949          * an old state.
 950          *
 951          * @param sone
 952          *            The Sone to update
 953          * @param soneRescueMode
 954          *            {@code true} if the stored Sone should be updated regardless
 955          *            of the age of the given Sone
 956          */
 957         public void updateSone(Sone sone, boolean soneRescueMode) {
 958                 Optional<Sone> storedSone = getSone(sone.getId());
 959                 if (storedSone.isPresent()) {
 960                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 961                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 962                                 return;
 963                         }
 964                         /* find removed posts. */
 965                         Collection<Post> removedPosts = new ArrayList<Post>();
 966                         Collection<Post> newPosts = new ArrayList<Post>();
 967                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 968                         for (Post oldPost : existingPosts) {
 969                                 if (!sone.getPosts().contains(oldPost)) {
 970                                         removedPosts.add(oldPost);
 971                                 }
 972                         }
 973                         /* find new posts. */
 974                         for (Post newPost : sone.getPosts()) {
 975                                 if (existingPosts.contains(newPost)) {
 976                                         continue;
 977                                 }
 978                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
 979                                         newPost.setKnown(true);
 980                                 } else if (!newPost.isKnown()) {
 981                                         newPosts.add(newPost);
 982                                 }
 983                         }
 984                         /* store posts. */
 985                         database.storePosts(sone, sone.getPosts());
 986                         Collection<PostReply> newPostReplies = new ArrayList<PostReply>();
 987                         Collection<PostReply> removedPostReplies = new ArrayList<PostReply>();
 988                         if (!soneRescueMode) {
 989                                 for (PostReply reply : storedSone.get().getReplies()) {
 990                                         if (!sone.getReplies().contains(reply)) {
 991                                                 removedPostReplies.add(reply);
 992                                         }
 993                                 }
 994                         }
 995                         Set<PostReply> storedReplies = storedSone.get().getReplies();
 996                         for (PostReply reply : sone.getReplies()) {
 997                                 if (storedReplies.contains(reply)) {
 998                                         continue;
 999                                 }
1000                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
1001                                         reply.setKnown(true);
1002                                 } else if (!reply.isKnown()) {
1003                                         newPostReplies.add(reply);
1004                                 }
1005                         }
1006                         database.storePostReplies(sone, sone.getReplies());
1007                         for (Album album : storedSone.get().getRootAlbum().getAlbums()) {
1008                                 database.removeAlbum(album);
1009                                 for (Image image : album.getImages()) {
1010                                         database.removeImage(image);
1011                                 }
1012                         }
1013                         for (Post removedPost : removedPosts) {
1014                                 eventBus.post(new PostRemovedEvent(removedPost));
1015                         }
1016                         for (Post newPost : newPosts) {
1017                                 eventBus.post(new NewPostFoundEvent(newPost));
1018                         }
1019                         for (PostReply removedPostReply : removedPostReplies) {
1020                                 eventBus.post(new PostReplyRemovedEvent(removedPostReply));
1021                         }
1022                         for (PostReply newPostReply : newPostReplies) {
1023                                 eventBus.post(new NewPostReplyFoundEvent(newPostReply));
1024                         }
1025                         for (Album album : sone.getRootAlbum().getAlbums()) {
1026                                 database.storeAlbum(album);
1027                                 for (Image image : album.getImages()) {
1028                                         database.storeImage(image);
1029                                 }
1030                         }
1031                         synchronized (sones) {
1032                                 sone.setOptions(storedSone.get().getOptions());
1033                                 sone.setKnown(storedSone.get().isKnown());
1034                                 sone.setStatus((sone.getTime() == 0) ? SoneStatus.unknown : SoneStatus.idle);
1035                                 if (sone.isLocal()) {
1036                                         soneInserters.get(storedSone.get()).setSone(sone);
1037                                         touchConfiguration();
1038                                 }
1039                                 sones.put(sone.getId(), sone);
1040                         }
1041                 }
1042         }
1043
1044         /**
1045          * Deletes the given Sone. This will remove the Sone from the
1046          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1047          * remove the context from its identity.
1048          *
1049          * @param sone
1050          *            The Sone to delete
1051          */
1052         public void deleteSone(Sone sone) {
1053                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1054                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1055                         return;
1056                 }
1057                 synchronized (sones) {
1058                         if (!getLocalSones().contains(sone)) {
1059                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1060                                 return;
1061                         }
1062                         sones.remove(sone.getId());
1063                         SoneInserter soneInserter = soneInserters.remove(sone);
1064                         soneInserter.stop();
1065                 }
1066                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1067                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1068                 try {
1069                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1070                 } catch (ConfigurationException ce1) {
1071                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1072                 }
1073         }
1074
1075         /**
1076          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1077          * known} before, a {@link MarkSoneKnownEvent} is fired.
1078          *
1079          * @param sone
1080          *            The Sone to mark as known
1081          */
1082         public void markSoneKnown(Sone sone) {
1083                 if (!sone.isKnown()) {
1084                         sone.setKnown(true);
1085                         synchronized (knownSones) {
1086                                 knownSones.add(sone.getId());
1087                         }
1088                         eventBus.post(new MarkSoneKnownEvent(sone));
1089                         touchConfiguration();
1090                 }
1091         }
1092
1093         /**
1094          * Loads and updates the given Sone from the configuration. If any error is
1095          * encountered, loading is aborted and the given Sone is not changed.
1096          *
1097          * @param sone
1098          *            The Sone to load and update
1099          */
1100         public void loadSone(Sone sone) {
1101                 if (!sone.isLocal()) {
1102                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1103                         return;
1104                 }
1105                 logger.info(String.format("Loading local Sone: %s", sone));
1106
1107                 /* initialize options. */
1108                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1109                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1110                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1111                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1112                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1113                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1114
1115                 /* load Sone. */
1116                 String sonePrefix = "Sone/" + sone.getId();
1117                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1118                 if (soneTime == null) {
1119                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1120                         return;
1121                 }
1122                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1123
1124                 /* load profile. */
1125                 Profile profile = new Profile(sone);
1126                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1127                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1128                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1129                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1130                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1131                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1132
1133                 /* load profile fields. */
1134                 while (true) {
1135                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1136                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1137                         if (fieldName == null) {
1138                                 break;
1139                         }
1140                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1141                         profile.addField(fieldName).setValue(fieldValue);
1142                 }
1143
1144                 /* load posts. */
1145                 Set<Post> posts = new HashSet<Post>();
1146                 while (true) {
1147                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1148                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1149                         if (postId == null) {
1150                                 break;
1151                         }
1152                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1153                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1154                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1155                         if ((postTime == 0) || (postText == null)) {
1156                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1157                                 return;
1158                         }
1159                         PostBuilder postBuilder = postBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1160                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1161                                 postBuilder.to(postRecipientId);
1162                         }
1163                         posts.add(postBuilder.build());
1164                 }
1165
1166                 /* load replies. */
1167                 Set<PostReply> replies = new HashSet<PostReply>();
1168                 while (true) {
1169                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1170                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1171                         if (replyId == null) {
1172                                 break;
1173                         }
1174                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1175                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1176                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1177                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1178                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1179                                 return;
1180                         }
1181                         PostReplyBuilder postReplyBuilder = postReplyBuilder().withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1182                         replies.add(postReplyBuilder.build());
1183                 }
1184
1185                 /* load post likes. */
1186                 Set<String> likedPostIds = new HashSet<String>();
1187                 while (true) {
1188                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1189                         if (likedPostId == null) {
1190                                 break;
1191                         }
1192                         likedPostIds.add(likedPostId);
1193                 }
1194
1195                 /* load reply likes. */
1196                 Set<String> likedReplyIds = new HashSet<String>();
1197                 while (true) {
1198                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1199                         if (likedReplyId == null) {
1200                                 break;
1201                         }
1202                         likedReplyIds.add(likedReplyId);
1203                 }
1204
1205                 /* load friends. */
1206                 Set<String> friends = new HashSet<String>();
1207                 while (true) {
1208                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1209                         if (friendId == null) {
1210                                 break;
1211                         }
1212                         friends.add(friendId);
1213                 }
1214
1215                 /* load albums. */
1216                 List<Album> topLevelAlbums = new ArrayList<Album>();
1217                 int albumCounter = 0;
1218                 while (true) {
1219                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1220                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1221                         if (albumId == null) {
1222                                 break;
1223                         }
1224                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1225                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1226                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1227                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1228                         if ((albumTitle == null) || (albumDescription == null)) {
1229                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1230                                 return;
1231                         }
1232                         Album album = getAlbum(albumId).setSone(sone).modify().setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId).update();
1233                         if (albumParentId != null) {
1234                                 Album parentAlbum = getAlbum(albumParentId, false);
1235                                 if (parentAlbum == null) {
1236                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1237                                         return;
1238                                 }
1239                                 parentAlbum.addAlbum(album);
1240                         } else {
1241                                 if (!topLevelAlbums.contains(album)) {
1242                                         topLevelAlbums.add(album);
1243                                 }
1244                         }
1245                 }
1246
1247                 /* load images. */
1248                 int imageCounter = 0;
1249                 while (true) {
1250                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1251                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1252                         if (imageId == null) {
1253                                 break;
1254                         }
1255                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1256                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1257                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1258                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1259                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1260                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1261                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1262                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1263                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1264                                 return;
1265                         }
1266                         Album album = getAlbum(albumId, false);
1267                         if (album == null) {
1268                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1269                                 return;
1270                         }
1271                         Image image = getImage(imageId).modify().setSone(sone).setCreationTime(creationTime).setKey(key).setTitle(title).setDescription(description).setWidth(width).setHeight(height).update();
1272                         album.addImage(image);
1273                 }
1274
1275                 /* load avatar. */
1276                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1277                 if (avatarId != null) {
1278                         profile.setAvatar(getImage(avatarId, false));
1279                 }
1280
1281                 /* load options. */
1282                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1283                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1284                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1285                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1286                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1287                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1288
1289                 /* if we’re still here, Sone was loaded successfully. */
1290                 synchronized (sone) {
1291                         sone.setTime(soneTime);
1292                         sone.setProfile(profile);
1293                         sone.setPosts(posts);
1294                         sone.setReplies(replies);
1295                         sone.setLikePostIds(likedPostIds);
1296                         sone.setLikeReplyIds(likedReplyIds);
1297                         for (String friendId : friends) {
1298                                 followSone(sone, friendId);
1299                         }
1300                         for (Album album : sone.getRootAlbum().getAlbums()) {
1301                                 sone.getRootAlbum().removeAlbum(album);
1302                         }
1303                         for (Album album : topLevelAlbums) {
1304                                 sone.getRootAlbum().addAlbum(album);
1305                         }
1306                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1307                 }
1308                 synchronized (knownSones) {
1309                         for (String friend : friends) {
1310                                 knownSones.add(friend);
1311                         }
1312                 }
1313                 database.storePosts(sone, posts);
1314                 for (Post post : posts) {
1315                         post.setKnown(true);
1316                 }
1317                 database.storePostReplies(sone, replies);
1318                 for (PostReply reply : replies) {
1319                         reply.setKnown(true);
1320                 }
1321
1322                 logger.info(String.format("Sone loaded successfully: %s", sone));
1323         }
1324
1325         /**
1326          * Creates a new post.
1327          *
1328          * @param sone
1329          *            The Sone that creates the post
1330          * @param text
1331          *            The text of the post
1332          * @return The created post
1333          */
1334         public Post createPost(Sone sone, String text) {
1335                 return createPost(sone, System.currentTimeMillis(), text);
1336         }
1337
1338         /**
1339          * Creates a new post.
1340          *
1341          * @param sone
1342          *            The Sone that creates the post
1343          * @param time
1344          *            The time of the post
1345          * @param text
1346          *            The text of the post
1347          * @return The created post
1348          */
1349         public Post createPost(Sone sone, long time, String text) {
1350                 return createPost(sone, null, time, text);
1351         }
1352
1353         /**
1354          * Creates a new post.
1355          *
1356          * @param sone
1357          *            The Sone that creates the post
1358          * @param recipient
1359          *            The recipient Sone, or {@code null} if this post does not have
1360          *            a recipient
1361          * @param text
1362          *            The text of the post
1363          * @return The created post
1364          */
1365         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1366                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1367         }
1368
1369         /**
1370          * Creates a new post.
1371          *
1372          * @param sone
1373          *            The Sone that creates the post
1374          * @param recipient
1375          *            The recipient Sone, or {@code null} if this post does not have
1376          *            a recipient
1377          * @param time
1378          *            The time of the post
1379          * @param text
1380          *            The text of the post
1381          * @return The created post
1382          */
1383         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1384                 checkNotNull(text, "text must not be null");
1385                 checkArgument(text.trim().length() > 0, "text must not be empty");
1386                 if (!sone.isLocal()) {
1387                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1388                         return null;
1389                 }
1390                 PostBuilder postBuilder = database.newPostBuilder();
1391                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1392                 if (recipient.isPresent()) {
1393                         postBuilder.to(recipient.get().getId());
1394                 }
1395                 final Post post = postBuilder.build();
1396                 database.storePost(post);
1397                 eventBus.post(new NewPostFoundEvent(post));
1398                 sone.addPost(post);
1399                 touchConfiguration();
1400                 localElementTicker.schedule(new MarkPostKnown(post), 10, TimeUnit.SECONDS);
1401                 return post;
1402         }
1403
1404         /**
1405          * Deletes the given post.
1406          *
1407          * @param post
1408          *            The post to delete
1409          */
1410         public void deletePost(Post post) {
1411                 if (!post.getSone().isLocal()) {
1412                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1413                         return;
1414                 }
1415                 database.removePost(post);
1416                 eventBus.post(new PostRemovedEvent(post));
1417                 markPostKnown(post);
1418                 touchConfiguration();
1419         }
1420
1421         /**
1422          * Marks the given post as known, if it is currently not a known post
1423          * (according to {@link Post#isKnown()}).
1424          *
1425          * @param post
1426          *            The post to mark as known
1427          */
1428         public void markPostKnown(Post post) {
1429                 post.setKnown(true);
1430                 eventBus.post(new MarkPostKnownEvent(post));
1431                 touchConfiguration();
1432                 for (PostReply reply : getReplies(post.getId())) {
1433                         markReplyKnown(reply);
1434                 }
1435         }
1436
1437         /**
1438          * Bookmarks the given post.
1439          *
1440          * @param post
1441          *            The post to bookmark
1442          */
1443         public void bookmark(Post post) {
1444                 bookmarkPost(post.getId());
1445         }
1446
1447         /**
1448          * Bookmarks the post with the given ID.
1449          *
1450          * @param id
1451          *            The ID of the post to bookmark
1452          */
1453         public void bookmarkPost(String id) {
1454                 synchronized (bookmarkedPosts) {
1455                         bookmarkedPosts.add(id);
1456                 }
1457         }
1458
1459         /**
1460          * Removes the given post from the bookmarks.
1461          *
1462          * @param post
1463          *            The post to unbookmark
1464          */
1465         public void unbookmark(Post post) {
1466                 unbookmarkPost(post.getId());
1467         }
1468
1469         /**
1470          * Removes the post with the given ID from the bookmarks.
1471          *
1472          * @param id
1473          *            The ID of the post to unbookmark
1474          */
1475         public void unbookmarkPost(String id) {
1476                 synchronized (bookmarkedPosts) {
1477                         bookmarkedPosts.remove(id);
1478                 }
1479         }
1480
1481         /**
1482          * Creates a new reply.
1483          *
1484          * @param sone
1485          *            The Sone that creates the reply
1486          * @param post
1487          *            The post that this reply refers to
1488          * @param text
1489          *            The text of the reply
1490          * @return The created reply
1491          */
1492         public PostReply createReply(Sone sone, Post post, String text) {
1493                 checkNotNull(text, "text must not be null");
1494                 checkArgument(text.trim().length() > 0, "text must not be empty");
1495                 if (!sone.isLocal()) {
1496                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1497                         return null;
1498                 }
1499                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1500                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1501                 final PostReply reply = postReplyBuilder.build();
1502                 database.storePostReply(reply);
1503                 eventBus.post(new NewPostReplyFoundEvent(reply));
1504                 sone.addReply(reply);
1505                 touchConfiguration();
1506                 localElementTicker.schedule(new Runnable() {
1507
1508                         /**
1509                          * {@inheritDoc}
1510                          */
1511                         @Override
1512                         public void run() {
1513                                 markReplyKnown(reply);
1514                         }
1515                 }, 10, TimeUnit.SECONDS);
1516                 return reply;
1517         }
1518
1519         /**
1520          * Deletes the given reply.
1521          *
1522          * @param reply
1523          *            The reply to delete
1524          */
1525         public void deleteReply(PostReply reply) {
1526                 Sone sone = reply.getSone();
1527                 if (!sone.isLocal()) {
1528                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1529                         return;
1530                 }
1531                 database.removePostReply(reply);
1532                 markReplyKnown(reply);
1533                 sone.removeReply(reply);
1534                 touchConfiguration();
1535         }
1536
1537         /**
1538          * Marks the given reply as known, if it is currently not a known reply
1539          * (according to {@link Reply#isKnown()}).
1540          *
1541          * @param reply
1542          *            The reply to mark as known
1543          */
1544         public void markReplyKnown(PostReply reply) {
1545                 boolean previouslyKnown = reply.isKnown();
1546                 reply.setKnown(true);
1547                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1548                 if (!previouslyKnown) {
1549                         touchConfiguration();
1550                 }
1551         }
1552
1553         /**
1554          * Creates a new top-level album for the given Sone.
1555          *
1556          * @param sone
1557          *            The Sone to create the album for
1558          * @return The new album
1559          */
1560         public Album createAlbum(Sone sone) {
1561                 return createAlbum(sone, sone.getRootAlbum());
1562         }
1563
1564         /**
1565          * Creates a new album for the given Sone.
1566          *
1567          * @param sone
1568          *            The Sone to create the album for
1569          * @param parent
1570          *            The parent of the album (may be {@code null} to create a
1571          *            top-level album)
1572          * @return The new album
1573          */
1574         public Album createAlbum(Sone sone, Album parent) {
1575                 Album album = database.newAlbumBuilder().randomId().build();
1576                 database.storeAlbum(album);
1577                 album.setSone(sone);
1578                 parent.addAlbum(album);
1579                 return album;
1580         }
1581
1582         /**
1583          * Deletes the given album. The owner of the album has to be a local Sone,
1584          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1585          *
1586          * @param album
1587          *            The album to remove
1588          */
1589         public void deleteAlbum(Album album) {
1590                 checkNotNull(album, "album must not be null");
1591                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1592                 if (!album.isEmpty()) {
1593                         return;
1594                 }
1595                 album.getParent().removeAlbum(album);
1596                 database.removeAlbum(album);
1597                 touchConfiguration();
1598         }
1599
1600         /**
1601          * Creates a new image.
1602          *
1603          * @param sone
1604          *            The Sone creating the image
1605          * @param album
1606          *            The album the image will be inserted into
1607          * @param temporaryImage
1608          *            The temporary image to create the image from
1609          * @return The newly created image
1610          */
1611         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1612                 checkNotNull(sone, "sone must not be null");
1613                 checkNotNull(album, "album must not be null");
1614                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1615                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1616                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1617                 Image image = database.newImageBuilder().withId(temporaryImage.getId()).build().modify().setSone(sone).setCreationTime(System.currentTimeMillis()).update();
1618                 album.addImage(image);
1619                 database.storeImage(image);
1620                 imageInserter.insertImage(temporaryImage, image);
1621                 return image;
1622         }
1623
1624         /**
1625          * Deletes the given image. This method will also delete a matching
1626          * temporary image.
1627          *
1628          * @see #deleteTemporaryImage(TemporaryImage)
1629          * @param image
1630          *            The image to delete
1631          */
1632         public void deleteImage(Image image) {
1633                 checkNotNull(image, "image must not be null");
1634                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1635                 deleteTemporaryImage(image.getId());
1636                 image.getAlbum().removeImage(image);
1637                 database.removeImage(image);
1638                 touchConfiguration();
1639         }
1640
1641         /**
1642          * Creates a new temporary image.
1643          *
1644          * @param mimeType
1645          *            The MIME type of the temporary image
1646          * @param imageData
1647          *            The encoded data of the image
1648          * @return The temporary image
1649          */
1650         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1651                 TemporaryImage temporaryImage = new TemporaryImage();
1652                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1653                 synchronized (temporaryImages) {
1654                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1655                 }
1656                 return temporaryImage;
1657         }
1658
1659         /**
1660          * Deletes the given temporary image.
1661          *
1662          * @param temporaryImage
1663          *            The temporary image to delete
1664          */
1665         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1666                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1667                 deleteTemporaryImage(temporaryImage.getId());
1668         }
1669
1670         /**
1671          * Deletes the temporary image with the given ID.
1672          *
1673          * @param imageId
1674          *            The ID of the temporary image to delete
1675          */
1676         public void deleteTemporaryImage(String imageId) {
1677                 checkNotNull(imageId, "imageId must not be null");
1678                 synchronized (temporaryImages) {
1679                         temporaryImages.remove(imageId);
1680                 }
1681                 Image image = getImage(imageId, false);
1682                 if (image != null) {
1683                         imageInserter.cancelImageInsert(image);
1684                 }
1685         }
1686
1687         /**
1688          * Notifies the core that the configuration, either of the core or of a
1689          * single local Sone, has changed, and that the configuration should be
1690          * saved.
1691          */
1692         public void touchConfiguration() {
1693                 lastConfigurationUpdate = System.currentTimeMillis();
1694         }
1695
1696         //
1697         // SERVICE METHODS
1698         //
1699
1700         /**
1701          * Starts the core.
1702          */
1703         @Override
1704         public void serviceStart() {
1705                 loadConfiguration();
1706                 updateChecker.start();
1707                 identityManager.start();
1708                 webOfTrustUpdater.init();
1709                 webOfTrustUpdater.start();
1710                 database.start();
1711         }
1712
1713         /**
1714          * {@inheritDoc}
1715          */
1716         @Override
1717         public void serviceRun() {
1718                 long lastSaved = System.currentTimeMillis();
1719                 while (!shouldStop()) {
1720                         sleep(1000);
1721                         long now = System.currentTimeMillis();
1722                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1723                                 for (Sone localSone : getLocalSones()) {
1724                                         saveSone(localSone);
1725                                 }
1726                                 saveConfiguration();
1727                                 lastSaved = now;
1728                         }
1729                 }
1730         }
1731
1732         /**
1733          * Stops the core.
1734          */
1735         @Override
1736         public void serviceStop() {
1737                 localElementTicker.shutdownNow();
1738                 synchronized (sones) {
1739                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1740                                 soneInserter.getValue().stop();
1741                                 saveSone(getLocalSone(soneInserter.getKey().getId(), false));
1742                         }
1743                 }
1744                 saveConfiguration();
1745                 database.stop();
1746                 webOfTrustUpdater.stop();
1747                 updateChecker.stop();
1748                 soneDownloader.stop();
1749                 soneDownloaders.shutdown();
1750                 identityManager.stop();
1751         }
1752
1753         //
1754         // PRIVATE METHODS
1755         //
1756
1757         /**
1758          * Saves the given Sone. This will persist all local settings for the given
1759          * Sone, such as the friends list and similar, private options.
1760          *
1761          * @param sone
1762          *            The Sone to save
1763          */
1764         private synchronized void saveSone(Sone sone) {
1765                 if (!sone.isLocal()) {
1766                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1767                         return;
1768                 }
1769                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1770                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1771                         return;
1772                 }
1773
1774                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1775                 try {
1776                         /* save Sone into configuration. */
1777                         String sonePrefix = "Sone/" + sone.getId();
1778                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1779                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1780
1781                         /* save profile. */
1782                         Profile profile = sone.getProfile();
1783                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1784                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1785                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1786                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1787                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1788                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1789                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1790
1791                         /* save profile fields. */
1792                         int fieldCounter = 0;
1793                         for (Field profileField : profile.getFields()) {
1794                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1795                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1796                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1797                         }
1798                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1799
1800                         /* save posts. */
1801                         int postCounter = 0;
1802                         for (Post post : sone.getPosts()) {
1803                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1804                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1805                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1806                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1807                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1808                         }
1809                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1810
1811                         /* save replies. */
1812                         int replyCounter = 0;
1813                         for (PostReply reply : sone.getReplies()) {
1814                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1815                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1816                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1817                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1818                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1819                         }
1820                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1821
1822                         /* save post likes. */
1823                         int postLikeCounter = 0;
1824                         for (String postId : sone.getLikedPostIds()) {
1825                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1826                         }
1827                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1828
1829                         /* save reply likes. */
1830                         int replyLikeCounter = 0;
1831                         for (String replyId : sone.getLikedReplyIds()) {
1832                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1833                         }
1834                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1835
1836                         /* save friends. */
1837                         int friendCounter = 0;
1838                         for (String friendId : sone.getFriends()) {
1839                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1840                         }
1841                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1842
1843                         /* save albums. first, collect in a flat structure, top-level first. */
1844                         List<Album> albums = FluentIterable.from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1845
1846                         int albumCounter = 0;
1847                         for (Album album : albums) {
1848                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1849                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1850                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1851                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1852                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1853                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1854                         }
1855                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1856
1857                         /* save images. */
1858                         int imageCounter = 0;
1859                         for (Album album : albums) {
1860                                 for (Image image : album.getImages()) {
1861                                         if (!image.isInserted()) {
1862                                                 continue;
1863                                         }
1864                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1865                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1866                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1867                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1868                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1869                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1870                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1871                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1872                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1873                                 }
1874                         }
1875                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1876
1877                         /* save options. */
1878                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1879                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1880                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1881                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1882                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1883                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
1884
1885                         configuration.save();
1886
1887                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1888
1889                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1890                 } catch (ConfigurationException ce1) {
1891                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1892                 }
1893         }
1894
1895         /**
1896          * Saves the current options.
1897          */
1898         private void saveConfiguration() {
1899                 synchronized (configuration) {
1900                         if (storingConfiguration) {
1901                                 logger.log(Level.FINE, "Already storing configuration…");
1902                                 return;
1903                         }
1904                         storingConfiguration = true;
1905                 }
1906
1907                 /* store the options first. */
1908                 try {
1909                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1910                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1911                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1912                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1913                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1914                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1915                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1916                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1917                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1918                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1919                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1920                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1921
1922                         /* save known Sones. */
1923                         int soneCounter = 0;
1924                         synchronized (knownSones) {
1925                                 for (String knownSoneId : knownSones) {
1926                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1927                                 }
1928                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1929                         }
1930
1931                         /* save Sone following times. */
1932                         soneCounter = 0;
1933                         synchronized (soneFollowingTimes) {
1934                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1935                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1936                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1937                                         ++soneCounter;
1938                                 }
1939                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1940                         }
1941
1942                         /* save known posts. */
1943                         database.save();
1944
1945                         /* save bookmarked posts. */
1946                         int bookmarkedPostCounter = 0;
1947                         synchronized (bookmarkedPosts) {
1948                                 for (String bookmarkedPostId : bookmarkedPosts) {
1949                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1950                                 }
1951                         }
1952                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1953
1954                         /* now save it. */
1955                         configuration.save();
1956
1957                 } catch (ConfigurationException ce1) {
1958                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1959                 } catch (DatabaseException de1) {
1960                         logger.log(Level.SEVERE, "Could not save database!", de1);
1961                 } finally {
1962                         synchronized (configuration) {
1963                                 storingConfiguration = false;
1964                         }
1965                 }
1966         }
1967
1968         /**
1969          * Loads the configuration.
1970          */
1971         private void loadConfiguration() {
1972                 /* create options. */
1973                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new SetInsertionDelay()));
1974                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1975                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1976                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1977                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1978                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1979                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1980                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1981                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1982                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, fcpInterface.new SetActive()));
1983                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, fcpInterface.new SetFullAccessRequired()));
1984
1985                 loadConfigurationValue("InsertionDelay");
1986                 loadConfigurationValue("PostsPerPage");
1987                 loadConfigurationValue("ImagesPerPage");
1988                 loadConfigurationValue("CharactersPerPost");
1989                 loadConfigurationValue("PostCutOffLength");
1990                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1991                 loadConfigurationValue("PositiveTrust");
1992                 loadConfigurationValue("NegativeTrust");
1993                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1994                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1995                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1996
1997                 /* load known Sones. */
1998                 int soneCounter = 0;
1999                 while (true) {
2000                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2001                         if (knownSoneId == null) {
2002                                 break;
2003                         }
2004                         synchronized (knownSones) {
2005                                 knownSones.add(knownSoneId);
2006                         }
2007                 }
2008
2009                 /* load Sone following times. */
2010                 soneCounter = 0;
2011                 while (true) {
2012                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2013                         if (soneId == null) {
2014                                 break;
2015                         }
2016                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2017                         synchronized (soneFollowingTimes) {
2018                                 soneFollowingTimes.put(soneId, time);
2019                         }
2020                         ++soneCounter;
2021                 }
2022
2023                 /* load bookmarked posts. */
2024                 int bookmarkedPostCounter = 0;
2025                 while (true) {
2026                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2027                         if (bookmarkedPostId == null) {
2028                                 break;
2029                         }
2030                         synchronized (bookmarkedPosts) {
2031                                 bookmarkedPosts.add(bookmarkedPostId);
2032                         }
2033                 }
2034
2035         }
2036
2037         /**
2038          * Loads an {@link Integer} configuration value for the option with the
2039          * given name, logging validation failures.
2040          *
2041          * @param optionName
2042          *            The name of the option to load
2043          */
2044         private void loadConfigurationValue(String optionName) {
2045                 try {
2046                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2047                 } catch (IllegalArgumentException iae1) {
2048                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2049                 }
2050         }
2051
2052         /**
2053          * Notifies the core that a new {@link OwnIdentity} was added.
2054          *
2055          * @param ownIdentityAddedEvent
2056          *            The event
2057          */
2058         @Subscribe
2059         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2060                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2061                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2062                 if (ownIdentity.hasContext("Sone")) {
2063                         addLocalSone(ownIdentity);
2064                 }
2065         }
2066
2067         /**
2068          * Notifies the core that an {@link OwnIdentity} was removed.
2069          *
2070          * @param ownIdentityRemovedEvent
2071          *            The event
2072          */
2073         @Subscribe
2074         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2075                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2076                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2077                 trustedIdentities.removeAll(ownIdentity);
2078         }
2079
2080         /**
2081          * Notifies the core that a new {@link Identity} was added.
2082          *
2083          * @param identityAddedEvent
2084          *            The event
2085          */
2086         @Subscribe
2087         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2088                 Identity identity = identityAddedEvent.identity();
2089                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2090                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
2091                 addRemoteSone(identity);
2092         }
2093
2094         /**
2095          * Notifies the core that an {@link Identity} was updated.
2096          *
2097          * @param identityUpdatedEvent
2098          *            The event
2099          */
2100         @Subscribe
2101         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2102                 final Identity identity = identityUpdatedEvent.identity();
2103                 soneDownloaders.execute(new Runnable() {
2104
2105                         @Override
2106                         @SuppressWarnings("synthetic-access")
2107                         public void run() {
2108                                 Sone sone = getRemoteSone(identity.getId(), false);
2109                                 if (sone.isLocal()) {
2110                                         return;
2111                                 }
2112                                 sone.setIdentity(identity);
2113                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2114                                 soneDownloader.addSone(sone);
2115                                 soneDownloader.fetchSone(sone);
2116                         }
2117                 });
2118         }
2119
2120         /**
2121          * Notifies the core that an {@link Identity} was removed.
2122          *
2123          * @param identityRemovedEvent
2124          *            The event
2125          */
2126         @Subscribe
2127         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2128                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2129                 Identity identity = identityRemovedEvent.identity();
2130                 trustedIdentities.remove(ownIdentity, identity);
2131                 boolean foundIdentity = false;
2132                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
2133                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2134                                 continue;
2135                         }
2136                         if (trustedIdentity.getValue().contains(identity)) {
2137                                 foundIdentity = true;
2138                         }
2139                 }
2140                 if (foundIdentity) {
2141                         /* some local identity still trusts this identity, don’t remove. */
2142                         return;
2143                 }
2144                 Optional<Sone> sone = getSone(identity.getId());
2145                 if (!sone.isPresent()) {
2146                         /* TODO - we don’t have the Sone anymore. should this happen? */
2147                         return;
2148                 }
2149                 database.removePosts(sone.get());
2150                 for (Post post : sone.get().getPosts()) {
2151                         eventBus.post(new PostRemovedEvent(post));
2152                 }
2153                 database.removePostReplies(sone.get());
2154                 for (PostReply reply : sone.get().getReplies()) {
2155                         eventBus.post(new PostReplyRemovedEvent(reply));
2156                 }
2157                 synchronized (sones) {
2158                         sones.remove(identity.getId());
2159                 }
2160                 eventBus.post(new SoneRemovedEvent(sone.get()));
2161         }
2162
2163         /**
2164          * Deletes the temporary image.
2165          *
2166          * @param imageInsertFinishedEvent
2167          *            The event
2168          */
2169         @Subscribe
2170         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2171                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2172                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
2173                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2174                 touchConfiguration();
2175         }
2176
2177         @VisibleForTesting
2178         class MarkPostKnown implements Runnable {
2179
2180                 private final Post post;
2181
2182                 public MarkPostKnown(Post post) {
2183                         this.post = post;
2184                 }
2185
2186                 @Override
2187                 public void run() {
2188                         markPostKnown(post);
2189                 }
2190
2191         }
2192
2193 }