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
  23 import java.net.MalformedURLException;
  24 import java.util.ArrayList;
  25 import java.util.Collection;
  26 import java.util.HashMap;
  27 import java.util.HashSet;
  28 import java.util.List;
  29 import java.util.Map;
  30 import java.util.Map.Entry;
  31 import java.util.Set;
  32 import java.util.concurrent.ExecutorService;
  33 import java.util.concurrent.Executors;
  34 import java.util.concurrent.ScheduledExecutorService;
  35 import java.util.concurrent.TimeUnit;
  36 import java.util.logging.Level;
  37 import java.util.logging.Logger;
  38
  39 import net.pterodactylus.sone.core.Options.DefaultOption;
  40 import net.pterodactylus.sone.core.Options.Option;
  41 import net.pterodactylus.sone.core.Options.OptionWatcher;
  42 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  43 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  46 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  47 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  49 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  50 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  51 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  52 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  53 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  54 import net.pterodactylus.sone.data.Album;
  55 import net.pterodactylus.sone.data.Client;
  56 import net.pterodactylus.sone.data.Image;
  57 import net.pterodactylus.sone.data.Post;
  58 import net.pterodactylus.sone.data.PostReply;
  59 import net.pterodactylus.sone.data.Profile;
  60 import net.pterodactylus.sone.data.Profile.Field;
  61 import net.pterodactylus.sone.data.Reply;
  62 import net.pterodactylus.sone.data.Sone;
  63 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  64 import net.pterodactylus.sone.data.Sone.SoneStatus;
  65 import net.pterodactylus.sone.data.TemporaryImage;
  66 import net.pterodactylus.sone.database.Database;
  67 import net.pterodactylus.sone.database.DatabaseException;
  68 import net.pterodactylus.sone.database.PostBuilder;
  69 import net.pterodactylus.sone.database.PostProvider;
  70 import net.pterodactylus.sone.database.PostReplyBuilder;
  71 import net.pterodactylus.sone.database.PostReplyProvider;
  72 import net.pterodactylus.sone.database.SoneProvider;
  73 import net.pterodactylus.sone.fcp.FcpInterface;
  74 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  75 import net.pterodactylus.sone.freenet.wot.Identity;
  76 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  77 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  78 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  83 import net.pterodactylus.sone.main.SonePlugin;
  84 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  85 import net.pterodactylus.util.config.Configuration;
  86 import net.pterodactylus.util.config.ConfigurationException;
  87 import net.pterodactylus.util.logging.Logging;
  88 import net.pterodactylus.util.number.Numbers;
  89 import net.pterodactylus.util.service.AbstractService;
  90 import net.pterodactylus.util.thread.NamedThreadFactory;
  91
  92 import com.google.common.base.Optional;
  93 import com.google.common.base.Predicate;
  94 import com.google.common.base.Predicates;
  95 import com.google.common.collect.FluentIterable;
  96 import com.google.common.collect.HashMultimap;
  97 import com.google.common.collect.ImmutableSet;
  98 import com.google.common.collect.Multimap;
  99 import com.google.common.collect.Multimaps;
 100 import com.google.common.eventbus.EventBus;
 101 import com.google.common.eventbus.Subscribe;
 102 import com.google.inject.Inject;
 103
 104 import freenet.keys.FreenetURI;
 105
 106 /**
 107  * The Sone core.
 108  *
 109  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 110  */
 111 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 112
 113         /** The logger. */
 114         private static final Logger logger = Logging.getLogger(Core.class);
 115
 116         /** The start time. */
 117         private final long startupTime = System.currentTimeMillis();
 118
 119         /** The options. */
 120         private final Options options = new Options();
 121
 122         /** The preferences. */
 123         private final Preferences preferences = new Preferences(options);
 124
 125         /** The event bus. */
 126         private final EventBus eventBus;
 127
 128         /** The configuration. */
 129         private Configuration configuration;
 130
 131         /** Whether we’re currently saving the configuration. */
 132         private boolean storingConfiguration = false;
 133
 134         /** The identity manager. */
 135         private final IdentityManager identityManager;
 136
 137         /** Interface to freenet. */
 138         private final FreenetInterface freenetInterface;
 139
 140         /** The Sone downloader. */
 141         private final SoneDownloader soneDownloader;
 142
 143         /** The image inserter. */
 144         private final ImageInserter imageInserter;
 145
 146         /** Sone downloader thread-pool. */
 147         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 148
 149         /** The update checker. */
 150         private final UpdateChecker updateChecker;
 151
 152         /** The trust updater. */
 153         private final WebOfTrustUpdater webOfTrustUpdater;
 154
 155         /** The FCP interface. */
 156         private volatile FcpInterface fcpInterface;
 157
 158         /** The times Sones were followed. */
 159         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 160
 161         /** Locked local Sones. */
 162         /* synchronize on itself. */
 163         private final Set<Sone> lockedSones = new HashSet<Sone>();
 164
 165         /** Sone inserters. */
 166         /* synchronize access on this on sones. */
 167         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 168
 169         /** Sone rescuers. */
 170         /* synchronize access on this on sones. */
 171         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 172
 173         /** All Sones. */
 174         /* synchronize access on this on itself. */
 175         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 176
 177         /** All known Sones. */
 178         private final Set<String> knownSones = new HashSet<String>();
 179
 180         /** The post database. */
 181         private final Database database;
 182
 183         /** All bookmarked posts. */
 184         /* synchronize access on itself. */
 185         private final Set<String> bookmarkedPosts = new HashSet<String>();
 186
 187         /** Trusted identities, sorted by own identities. */
 188         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 189
 190         /** All known albums. */
 191         private final Map<String, Album> albums = new HashMap<String, Album>();
 192
 193         /** All known images. */
 194         private final Map<String, Image> images = new HashMap<String, Image>();
 195
 196         /** All temporary images. */
 197         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 198
 199         /** Ticker for threads that mark own elements as known. */
 200         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 201
 202         /** The time the configuration was last touched. */
 203         private volatile long lastConfigurationUpdate;
 204
 205         /**
 206          * Creates a new core.
 207          *
 208          * @param configuration
 209          *            The configuration of the core
 210          * @param freenetInterface
 211          *            The freenet interface
 212          * @param identityManager
 213          *            The identity manager
 214          * @param webOfTrustUpdater
 215          *            The WebOfTrust updater
 216          * @param eventBus
 217          *            The event bus
 218          * @param database
 219          *            The database
 220          */
 221         @Inject
 222         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 223                 super("Sone Core");
 224                 this.configuration = configuration;
 225                 this.freenetInterface = freenetInterface;
 226                 this.identityManager = identityManager;
 227                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 228                 this.imageInserter = new ImageInserter(freenetInterface);
 229                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 230                 this.webOfTrustUpdater = webOfTrustUpdater;
 231                 this.eventBus = eventBus;
 232                 this.database = database;
 233         }
 234
 235         //
 236         // ACCESSORS
 237         //
 238
 239         /**
 240          * Returns the time Sone was started.
 241          *
 242          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 243          */
 244         public long getStartupTime() {
 245                 return startupTime;
 246         }
 247
 248         /**
 249          * Sets the configuration to use. This will automatically save the current
 250          * configuration to the given configuration.
 251          *
 252          * @param configuration
 253          *            The new configuration to use
 254          */
 255         public void setConfiguration(Configuration configuration) {
 256                 this.configuration = configuration;
 257                 touchConfiguration();
 258         }
 259
 260         /**
 261          * Returns the options used by the core.
 262          *
 263          * @return The options of the core
 264          */
 265         public Preferences getPreferences() {
 266                 return preferences;
 267         }
 268
 269         /**
 270          * Returns the identity manager used by the core.
 271          *
 272          * @return The identity manager
 273          */
 274         public IdentityManager getIdentityManager() {
 275                 return identityManager;
 276         }
 277
 278         /**
 279          * Returns the update checker.
 280          *
 281          * @return The update checker
 282          */
 283         public UpdateChecker getUpdateChecker() {
 284                 return updateChecker;
 285         }
 286
 287         /**
 288          * Sets the FCP interface to use.
 289          *
 290          * @param fcpInterface
 291          *            The FCP interface to use
 292          */
 293         public void setFcpInterface(FcpInterface fcpInterface) {
 294                 this.fcpInterface = fcpInterface;
 295         }
 296
 297         /**
 298          * Returns the Sone rescuer for the given local Sone.
 299          *
 300          * @param sone
 301          *            The local Sone to get the rescuer for
 302          * @return The Sone rescuer for the given Sone
 303          */
 304         public SoneRescuer getSoneRescuer(Sone sone) {
 305                 checkNotNull(sone, "sone must not be null");
 306                 checkArgument(sone.isLocal(), "sone must be local");
 307                 synchronized (sones) {
 308                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 309                         if (soneRescuer == null) {
 310                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 311                                 soneRescuers.put(sone, soneRescuer);
 312                                 soneRescuer.start();
 313                         }
 314                         return soneRescuer;
 315                 }
 316         }
 317
 318         /**
 319          * Returns whether the given Sone is currently locked.
 320          *
 321          * @param sone
 322          *            The sone to check
 323          * @return {@code true} if the Sone is locked, {@code false} if it is not
 324          */
 325         public boolean isLocked(Sone sone) {
 326                 synchronized (lockedSones) {
 327                         return lockedSones.contains(sone);
 328                 }
 329         }
 330
 331         /**
 332          * {@inheritDocs}
 333          */
 334         @Override
 335         public Collection<Sone> getSones() {
 336                 synchronized (sones) {
 337                         return Collections.unmodifiableCollection(sones.values());
 338                 }
 339         }
 340
 341         /**
 342          * Returns the Sone with the given ID, regardless whether it’s local or
 343          * remote.
 344          *
 345          * @param id
 346          *            The ID of the Sone to get
 347          * @return The Sone with the given ID, or {@code null} if there is no such
 348          *         Sone
 349          */
 350         @Override
 351         public Optional<Sone> getSone(String id) {
 352                 synchronized (sones) {
 353                         return Optional.fromNullable(sones.get(id));
 354                 }
 355         }
 356
 357         /**
 358          * {@inheritDocs}
 359          */
 360         @Override
 361         public Collection<Sone> getLocalSones() {
 362                 synchronized (sones) {
 363                         return FluentIterable.from(sones.values()).filter(new Predicate<Sone>() {
 364
 365                                 @Override
 366                                 public boolean apply(Sone sone) {
 367                                         return sone.isLocal();
 368                                 }
 369                         }).toSet();
 370                 }
 371         }
 372
 373         /**
 374          * Returns the local Sone with the given ID, optionally creating a new Sone.
 375          *
 376          * @param id
 377          *            The ID of the Sone
 378          * @param create
 379          *            {@code true} to create a new Sone if none exists,
 380          *            {@code false} to return null if none exists
 381          * @return The Sone with the given ID, or {@code null}
 382          */
 383         public Sone getLocalSone(String id, boolean create) {
 384                 synchronized (sones) {
 385                         Sone sone = sones.get(id);
 386                         if ((sone == null) && create) {
 387                                 sone = new Sone(id, true);
 388                                 sones.put(id, sone);
 389                         }
 390                         if ((sone != null) && !sone.isLocal()) {
 391                                 sone = new Sone(id, true);
 392                                 sones.put(id, sone);
 393                         }
 394                         return sone;
 395                 }
 396         }
 397
 398         /**
 399          * {@inheritDocs}
 400          */
 401         @Override
 402         public Collection<Sone> getRemoteSones() {
 403                 synchronized (sones) {
 404                         return FluentIterable.from(sones.values()).filter(new Predicate<Sone>() {
 405
 406                                 @Override
 407                                 public boolean apply(Sone sone) {
 408                                         return !sone.isLocal();
 409                                 }
 410                         }).toSet();
 411                 }
 412         }
 413
 414         /**
 415          * Returns the remote Sone with the given ID.
 416          *
 417          * @param id
 418          *            The ID of the remote Sone to get
 419          * @param create
 420          *            {@code true} to always create a Sone, {@code false} to return
 421          *            {@code null} if no Sone with the given ID exists
 422          * @return The Sone with the given ID
 423          */
 424         public Sone getRemoteSone(String id, boolean create) {
 425                 synchronized (sones) {
 426                         Sone sone = sones.get(id);
 427                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 428                                 sone = new Sone(id, false);
 429                                 sones.put(id, sone);
 430                         }
 431                         return sone;
 432                 }
 433         }
 434
 435         /**
 436          * Returns whether the given Sone has been modified.
 437          *
 438          * @param sone
 439          *            The Sone to check for modifications
 440          * @return {@code true} if a modification has been detected in the Sone,
 441          *         {@code false} otherwise
 442          */
 443         public boolean isModifiedSone(Sone sone) {
 444                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 445         }
 446
 447         /**
 448          * Returns the time when the given was first followed by any local Sone.
 449          *
 450          * @param sone
 451          *            The Sone to get the time for
 452          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 453          *         been followed, or {@link Long#MAX_VALUE}
 454          */
 455         public long getSoneFollowingTime(Sone sone) {
 456                 synchronized (soneFollowingTimes) {
 457                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 458                 }
 459         }
 460
 461         /**
 462          * Returns whether the target Sone is trusted by the origin Sone.
 463          *
 464          * @param origin
 465          *            The origin Sone
 466          * @param target
 467          *            The target Sone
 468          * @return {@code true} if the target Sone is trusted by the origin Sone
 469          */
 470         public boolean isSoneTrusted(Sone origin, Sone target) {
 471                 checkNotNull(origin, "origin must not be null");
 472                 checkNotNull(target, "target must not be null");
 473                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 474                 return trustedIdentities.containsEntry(origin.getIdentity(), target.getIdentity());
 475         }
 476
 477         /**
 478          * Returns a post builder.
 479          *
 480          * @return A new post builder
 481          */
 482         public PostBuilder postBuilder() {
 483                 return database.newPostBuilder();
 484         }
 485
 486         /**
 487          * {@inheritDoc}
 488          */
 489         @Override
 490         public Optional<Post> getPost(String postId) {
 491                 return database.getPost(postId);
 492         }
 493
 494         /**
 495          * {@inheritDocs}
 496          */
 497         @Override
 498         public Collection<Post> getPosts(String soneId) {
 499                 return database.getPosts(soneId);
 500         }
 501
 502         /**
 503          * {@inheritDoc}
 504          */
 505         @Override
 506         public Collection<Post> getDirectedPosts(final String recipientId) {
 507                 checkNotNull(recipientId, "recipient must not be null");
 508                 return database.getDirectedPosts(recipientId);
 509         }
 510
 511         /**
 512          * Returns a post reply builder.
 513          *
 514          * @return A new post reply builder
 515          */
 516         public PostReplyBuilder postReplyBuilder() {
 517                 return database.newPostReplyBuilder();
 518         }
 519
 520         /**
 521          * {@inheritDoc}
 522          */
 523         @Override
 524         public Optional<PostReply> getPostReply(String replyId) {
 525                 return database.getPostReply(replyId);
 526         }
 527
 528         /**
 529          * {@inheritDoc}
 530          */
 531         @Override
 532         public List<PostReply> getReplies(final String postId) {
 533                 return database.getReplies(postId);
 534         }
 535
 536         /**
 537          * Returns all Sones that have liked the given post.
 538          *
 539          * @param post
 540          *            The post to get the liking Sones for
 541          * @return The Sones that like the given post
 542          */
 543         public Set<Sone> getLikes(Post post) {
 544                 Set<Sone> sones = new HashSet<Sone>();
 545                 for (Sone sone : getSones()) {
 546                         if (sone.getLikedPostIds().contains(post.getId())) {
 547                                 sones.add(sone);
 548                         }
 549                 }
 550                 return sones;
 551         }
 552
 553         /**
 554          * Returns all Sones that have liked the given reply.
 555          *
 556          * @param reply
 557          *            The reply to get the liking Sones for
 558          * @return The Sones that like the given reply
 559          */
 560         public Set<Sone> getLikes(PostReply reply) {
 561                 Set<Sone> sones = new HashSet<Sone>();
 562                 for (Sone sone : getSones()) {
 563                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 564                                 sones.add(sone);
 565                         }
 566                 }
 567                 return sones;
 568         }
 569
 570         /**
 571          * Returns whether the given post is bookmarked.
 572          *
 573          * @param post
 574          *            The post to check
 575          * @return {@code true} if the given post is bookmarked, {@code false}
 576          *         otherwise
 577          */
 578         public boolean isBookmarked(Post post) {
 579                 return isPostBookmarked(post.getId());
 580         }
 581
 582         /**
 583          * Returns whether the post with the given ID is bookmarked.
 584          *
 585          * @param id
 586          *            The ID of the post to check
 587          * @return {@code true} if the post with the given ID is bookmarked,
 588          *         {@code false} otherwise
 589          */
 590         public boolean isPostBookmarked(String id) {
 591                 synchronized (bookmarkedPosts) {
 592                         return bookmarkedPosts.contains(id);
 593                 }
 594         }
 595
 596         /**
 597          * Returns all currently known bookmarked posts.
 598          *
 599          * @return All bookmarked posts
 600          */
 601         public Set<Post> getBookmarkedPosts() {
 602                 Set<Post> posts = new HashSet<Post>();
 603                 synchronized (bookmarkedPosts) {
 604                         for (String bookmarkedPostId : bookmarkedPosts) {
 605                                 Optional<Post> post = getPost(bookmarkedPostId);
 606                                 if (!post.isPresent()) {
 607                                         posts.add(post.get());
 608                                 }
 609                         }
 610                 }
 611                 return posts;
 612         }
 613
 614         /**
 615          * Returns the album with the given ID, creating a new album if no album
 616          * with the given ID can be found.
 617          *
 618          * @param albumId
 619          *            The ID of the album
 620          * @return The album with the given ID
 621          */
 622         public Album getAlbum(String albumId) {
 623                 return getAlbum(albumId, true);
 624         }
 625
 626         /**
 627          * Returns the album with the given ID, optionally creating a new album if
 628          * an album with the given ID can not be found.
 629          *
 630          * @param albumId
 631          *            The ID of the album
 632          * @param create
 633          *            {@code true} to create a new album if none exists for the
 634          *            given ID
 635          * @return The album with the given ID, or {@code null} if no album with the
 636          *         given ID exists and {@code create} is {@code false}
 637          */
 638         public Album getAlbum(String albumId, boolean create) {
 639                 synchronized (albums) {
 640                         Album album = albums.get(albumId);
 641                         if (create && (album == null)) {
 642                                 album = new Album(albumId);
 643                                 albums.put(albumId, album);
 644                         }
 645                         return album;
 646                 }
 647         }
 648
 649         /**
 650          * Returns the image with the given ID, creating it if necessary.
 651          *
 652          * @param imageId
 653          *            The ID of the image
 654          * @return The image with the given ID
 655          */
 656         public Image getImage(String imageId) {
 657                 return getImage(imageId, true);
 658         }
 659
 660         /**
 661          * Returns the image with the given ID, optionally creating it if it does
 662          * not exist.
 663          *
 664          * @param imageId
 665          *            The ID of the image
 666          * @param create
 667          *            {@code true} to create an image if none exists with the given
 668          *            ID
 669          * @return The image with the given ID, or {@code null} if none exists and
 670          *         none was created
 671          */
 672         public Image getImage(String imageId, boolean create) {
 673                 synchronized (images) {
 674                         Image image = images.get(imageId);
 675                         if (create && (image == null)) {
 676                                 image = new Image(imageId);
 677                                 images.put(imageId, image);
 678                         }
 679                         return image;
 680                 }
 681         }
 682
 683         /**
 684          * Returns the temporary image with the given ID.
 685          *
 686          * @param imageId
 687          *            The ID of the temporary image
 688          * @return The temporary image, or {@code null} if there is no temporary
 689          *         image with the given ID
 690          */
 691         public TemporaryImage getTemporaryImage(String imageId) {
 692                 synchronized (temporaryImages) {
 693                         return temporaryImages.get(imageId);
 694                 }
 695         }
 696
 697         //
 698         // ACTIONS
 699         //
 700
 701         /**
 702          * Locks the given Sone. A locked Sone will not be inserted by
 703          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 704          * again.
 705          *
 706          * @param sone
 707          *            The sone to lock
 708          */
 709         public void lockSone(Sone sone) {
 710                 synchronized (lockedSones) {
 711                         if (lockedSones.add(sone)) {
 712                                 eventBus.post(new SoneLockedEvent(sone));
 713                         }
 714                 }
 715         }
 716
 717         /**
 718          * Unlocks the given Sone.
 719          *
 720          * @see #lockSone(Sone)
 721          * @param sone
 722          *            The sone to unlock
 723          */
 724         public void unlockSone(Sone sone) {
 725                 synchronized (lockedSones) {
 726                         if (lockedSones.remove(sone)) {
 727                                 eventBus.post(new SoneUnlockedEvent(sone));
 728                         }
 729                 }
 730         }
 731
 732         /**
 733          * Adds a local Sone from the given own identity.
 734          *
 735          * @param ownIdentity
 736          *            The own identity to create a Sone from
 737          * @return The added (or already existing) Sone
 738          */
 739         public Sone addLocalSone(OwnIdentity ownIdentity) {
 740                 if (ownIdentity == null) {
 741                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 742                         return null;
 743                 }
 744                 synchronized (sones) {
 745                         final Sone sone;
 746                         try {
 747                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 748                         } catch (MalformedURLException mue1) {
 749                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 750                                 return null;
 751                         }
 752                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 753                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 754                         sone.setKnown(true);
 755                         /* TODO - load posts ’n stuff */
 756                         sones.put(ownIdentity.getId(), sone);
 757                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 758                         soneInserters.put(sone, soneInserter);
 759                         sone.setStatus(SoneStatus.idle);
 760                         loadSone(sone);
 761                         soneInserter.start();
 762                         return sone;
 763                 }
 764         }
 765
 766         /**
 767          * Creates a new Sone for the given own identity.
 768          *
 769          * @param ownIdentity
 770          *            The own identity to create a Sone for
 771          * @return The created Sone
 772          */
 773         public Sone createSone(OwnIdentity ownIdentity) {
 774                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 775                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 776                         return null;
 777                 }
 778                 Sone sone = addLocalSone(ownIdentity);
 779                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 780                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 781                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 782                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 783                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 784                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 785
 786                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 787                 touchConfiguration();
 788                 return sone;
 789         }
 790
 791         /**
 792          * Adds the Sone of the given identity.
 793          *
 794          * @param identity
 795          *            The identity whose Sone to add
 796          * @return The added or already existing Sone
 797          */
 798         public Sone addRemoteSone(Identity identity) {
 799                 if (identity == null) {
 800                         logger.log(Level.WARNING, "Given Identity is null!");
 801                         return null;
 802                 }
 803                 synchronized (sones) {
 804                         final Sone sone = getRemoteSone(identity.getId(), true);
 805                         if (sone.isLocal()) {
 806                                 return sone;
 807                         }
 808                         sone.setIdentity(identity);
 809                         boolean newSone = sone.getRequestUri() == null;
 810                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 811                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 812                         if (newSone) {
 813                                 synchronized (knownSones) {
 814                                         newSone = !knownSones.contains(sone.getId());
 815                                 }
 816                                 sone.setKnown(!newSone);
 817                                 if (newSone) {
 818                                         eventBus.post(new NewSoneFoundEvent(sone));
 819                                         for (Sone localSone : getLocalSones()) {
 820                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 821                                                         followSone(localSone, sone.getId());
 822                                                 }
 823                                         }
 824                                 }
 825                         }
 826                         soneDownloader.addSone(sone);
 827                         soneDownloaders.execute(new Runnable() {
 828
 829                                 @Override
 830                                 @SuppressWarnings("synthetic-access")
 831                                 public void run() {
 832                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 833                                 }
 834
 835                         });
 836                         return sone;
 837                 }
 838         }
 839
 840         /**
 841          * Lets the given local Sone follow the Sone with the given ID.
 842          *
 843          * @param sone
 844          *            The local Sone that should follow another Sone
 845          * @param soneId
 846          *            The ID of the Sone to follow
 847          */
 848         public void followSone(Sone sone, String soneId) {
 849                 checkNotNull(sone, "sone must not be null");
 850                 checkNotNull(soneId, "soneId must not be null");
 851                 sone.addFriend(soneId);
 852                 synchronized (soneFollowingTimes) {
 853                         if (!soneFollowingTimes.containsKey(soneId)) {
 854                                 long now = System.currentTimeMillis();
 855                                 soneFollowingTimes.put(soneId, now);
 856                                 Optional<Sone> followedSone = getSone(soneId);
 857                                 if (!followedSone.isPresent()) {
 858                                         return;
 859                                 }
 860                                 for (Post post : followedSone.get().getPosts()) {
 861                                         if (post.getTime() < now) {
 862                                                 markPostKnown(post);
 863                                         }
 864                                 }
 865                                 for (PostReply reply : followedSone.get().getReplies()) {
 866                                         if (reply.getTime() < now) {
 867                                                 markReplyKnown(reply);
 868                                         }
 869                                 }
 870                         }
 871                 }
 872                 touchConfiguration();
 873         }
 874
 875         /**
 876          * Lets the given local Sone unfollow the Sone with the given ID.
 877          *
 878          * @param sone
 879          *            The local Sone that should unfollow another Sone
 880          * @param soneId
 881          *            The ID of the Sone being unfollowed
 882          */
 883         public void unfollowSone(Sone sone, String soneId) {
 884                 checkNotNull(sone, "sone must not be null");
 885                 checkNotNull(soneId, "soneId must not be null");
 886                 sone.removeFriend(soneId);
 887                 boolean unfollowedSoneStillFollowed = false;
 888                 for (Sone localSone : getLocalSones()) {
 889                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 890                 }
 891                 if (!unfollowedSoneStillFollowed) {
 892                         synchronized (soneFollowingTimes) {
 893                                 soneFollowingTimes.remove(soneId);
 894                         }
 895                 }
 896                 touchConfiguration();
 897         }
 898
 899         /**
 900          * Sets the trust value of the given origin Sone for the target Sone.
 901          *
 902          * @param origin
 903          *            The origin Sone
 904          * @param target
 905          *            The target Sone
 906          * @param trustValue
 907          *            The trust value (from {@code -100} to {@code 100})
 908          */
 909         public void setTrust(Sone origin, Sone target, int trustValue) {
 910                 checkNotNull(origin, "origin must not be null");
 911                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 912                 checkNotNull(target, "target must not be null");
 913                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 914                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 915         }
 916
 917         /**
 918          * Removes any trust assignment for the given target Sone.
 919          *
 920          * @param origin
 921          *            The trust origin
 922          * @param target
 923          *            The trust target
 924          */
 925         public void removeTrust(Sone origin, Sone target) {
 926                 checkNotNull(origin, "origin must not be null");
 927                 checkNotNull(target, "target must not be null");
 928                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 929                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 930         }
 931
 932         /**
 933          * Assigns the configured positive trust value for the given target.
 934          *
 935          * @param origin
 936          *            The trust origin
 937          * @param target
 938          *            The trust target
 939          */
 940         public void trustSone(Sone origin, Sone target) {
 941                 setTrust(origin, target, preferences.getPositiveTrust());
 942         }
 943
 944         /**
 945          * Assigns the configured negative trust value for the given target.
 946          *
 947          * @param origin
 948          *            The trust origin
 949          * @param target
 950          *            The trust target
 951          */
 952         public void distrustSone(Sone origin, Sone target) {
 953                 setTrust(origin, target, preferences.getNegativeTrust());
 954         }
 955
 956         /**
 957          * Removes the trust assignment for the given target.
 958          *
 959          * @param origin
 960          *            The trust origin
 961          * @param target
 962          *            The trust target
 963          */
 964         public void untrustSone(Sone origin, Sone target) {
 965                 removeTrust(origin, target);
 966         }
 967
 968         /**
 969          * Updates the stored Sone with the given Sone.
 970          *
 971          * @param sone
 972          *            The updated Sone
 973          */
 974         public void updateSone(Sone sone) {
 975                 updateSone(sone, false);
 976         }
 977
 978         /**
 979          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 980          * {@code true}, an older Sone than the current Sone can be given to restore
 981          * an old state.
 982          *
 983          * @param sone
 984          *            The Sone to update
 985          * @param soneRescueMode
 986          *            {@code true} if the stored Sone should be updated regardless
 987          *            of the age of the given Sone
 988          */
 989         public void updateSone(Sone sone, boolean soneRescueMode) {
 990                 Optional<Sone> storedSone = getSone(sone.getId());
 991                 if (storedSone.isPresent()) {
 992                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 993                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 994                                 return;
 995                         }
 996                         /* find removed posts. */
 997                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 998                         for (Post oldPost : existingPosts) {
 999                                 if (!sone.getPosts().contains(oldPost)) {
1000                                         eventBus.post(new PostRemovedEvent(oldPost));
1001                                 }
1002                         }
1003                         /* find new posts. */
1004                         for (Post newPost : sone.getPosts()) {
1005                                 if (existingPosts.contains(newPost)) {
1006                                         continue;
1007                                 }
1008                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
1009                                         newPost.setKnown(true);
1010                                 } else if (!newPost.isKnown()) {
1011                                         eventBus.post(new NewPostFoundEvent(newPost));
1012                                 }
1013                         }
1014                         /* store posts. */
1015                         database.storePosts(sone, sone.getPosts());
1016                         if (!soneRescueMode) {
1017                                 for (PostReply reply : storedSone.get().getReplies()) {
1018                                         if (!sone.getReplies().contains(reply)) {
1019                                                 eventBus.post(new PostReplyRemovedEvent(reply));
1020                                         }
1021                                 }
1022                         }
1023                         Set<PostReply> storedReplies = storedSone.get().getReplies();
1024                         for (PostReply reply : sone.getReplies()) {
1025                                 if (storedReplies.contains(reply)) {
1026                                         continue;
1027                                 }
1028                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
1029                                         reply.setKnown(true);
1030                                 } else if (!reply.isKnown()) {
1031                                         eventBus.post(new NewPostReplyFoundEvent(reply));
1032                                 }
1033                         }
1034                         database.storePostReplies(sone, sone.getReplies());
1035                         synchronized (albums) {
1036                                 synchronized (images) {
1037                                         for (Album album : storedSone.get().getAlbums()) {
1038                                                 albums.remove(album.getId());
1039                                                 for (Image image : album.getImages()) {
1040                                                         images.remove(image.getId());
1041                                                 }
1042                                         }
1043                                         for (Album album : sone.getAlbums()) {
1044                                                 albums.put(album.getId(), album);
1045                                                 for (Image image : album.getImages()) {
1046                                                         images.put(image.getId(), image);
1047                                                 }
1048                                         }
1049                                 }
1050                         }
1051                         synchronized (sones) {
1052                                 sone.setOptions(storedSone.get().getOptions());
1053                                 sones.put(sone.getId(), sone);
1054                         }
1055                 }
1056         }
1057
1058         /**
1059          * Deletes the given Sone. This will remove the Sone from the
1060          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1061          * remove the context from its identity.
1062          *
1063          * @param sone
1064          *            The Sone to delete
1065          */
1066         public void deleteSone(Sone sone) {
1067                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1068                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1069                         return;
1070                 }
1071                 synchronized (sones) {
1072                         if (!getLocalSones().contains(sone)) {
1073                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1074                                 return;
1075                         }
1076                         sones.remove(sone.getId());
1077                         SoneInserter soneInserter = soneInserters.remove(sone);
1078                         soneInserter.stop();
1079                 }
1080                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1081                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1082                 try {
1083                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1084                 } catch (ConfigurationException ce1) {
1085                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1086                 }
1087         }
1088
1089         /**
1090          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1091          * known} before, a {@link MarkSoneKnownEvent} is fired.
1092          *
1093          * @param sone
1094          *            The Sone to mark as known
1095          */
1096         public void markSoneKnown(Sone sone) {
1097                 if (!sone.isKnown()) {
1098                         sone.setKnown(true);
1099                         synchronized (knownSones) {
1100                                 knownSones.add(sone.getId());
1101                         }
1102                         eventBus.post(new MarkSoneKnownEvent(sone));
1103                         touchConfiguration();
1104                 }
1105         }
1106
1107         /**
1108          * Loads and updates the given Sone from the configuration. If any error is
1109          * encountered, loading is aborted and the given Sone is not changed.
1110          *
1111          * @param sone
1112          *            The Sone to load and update
1113          */
1114         public void loadSone(Sone sone) {
1115                 if (!sone.isLocal()) {
1116                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1117                         return;
1118                 }
1119
1120                 /* initialize options. */
1121                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1122                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1123                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1124                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1125                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1126                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1127
1128                 /* load Sone. */
1129                 String sonePrefix = "Sone/" + sone.getId();
1130                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1131                 if (soneTime == null) {
1132                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1133                         return;
1134                 }
1135                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1136
1137                 /* load profile. */
1138                 Profile profile = new Profile(sone);
1139                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1140                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1141                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1142                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1143                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1144                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1145
1146                 /* load profile fields. */
1147                 while (true) {
1148                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1149                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1150                         if (fieldName == null) {
1151                                 break;
1152                         }
1153                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1154                         profile.addField(fieldName).setValue(fieldValue);
1155                 }
1156
1157                 /* load posts. */
1158                 Set<Post> posts = new HashSet<Post>();
1159                 while (true) {
1160                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1161                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1162                         if (postId == null) {
1163                                 break;
1164                         }
1165                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1166                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1167                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1168                         if ((postTime == 0) || (postText == null)) {
1169                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1170                                 return;
1171                         }
1172                         PostBuilder postBuilder = postBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1173                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1174                                 postBuilder.to(postRecipientId);
1175                         }
1176                         posts.add(postBuilder.build());
1177                 }
1178
1179                 /* load replies. */
1180                 Set<PostReply> replies = new HashSet<PostReply>();
1181                 while (true) {
1182                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1183                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1184                         if (replyId == null) {
1185                                 break;
1186                         }
1187                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1188                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1189                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1190                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1191                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1192                                 return;
1193                         }
1194                         PostReplyBuilder postReplyBuilder = postReplyBuilder().withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1195                         replies.add(postReplyBuilder.build());
1196                 }
1197
1198                 /* load post likes. */
1199                 Set<String> likedPostIds = new HashSet<String>();
1200                 while (true) {
1201                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1202                         if (likedPostId == null) {
1203                                 break;
1204                         }
1205                         likedPostIds.add(likedPostId);
1206                 }
1207
1208                 /* load reply likes. */
1209                 Set<String> likedReplyIds = new HashSet<String>();
1210                 while (true) {
1211                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1212                         if (likedReplyId == null) {
1213                                 break;
1214                         }
1215                         likedReplyIds.add(likedReplyId);
1216                 }
1217
1218                 /* load friends. */
1219                 Set<String> friends = new HashSet<String>();
1220                 while (true) {
1221                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1222                         if (friendId == null) {
1223                                 break;
1224                         }
1225                         friends.add(friendId);
1226                 }
1227
1228                 /* load albums. */
1229                 List<Album> topLevelAlbums = new ArrayList<Album>();
1230                 int albumCounter = 0;
1231                 while (true) {
1232                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1233                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1234                         if (albumId == null) {
1235                                 break;
1236                         }
1237                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1238                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1239                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1240                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1241                         if ((albumTitle == null) || (albumDescription == null)) {
1242                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1243                                 return;
1244                         }
1245                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1246                         if (albumParentId != null) {
1247                                 Album parentAlbum = getAlbum(albumParentId, false);
1248                                 if (parentAlbum == null) {
1249                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1250                                         return;
1251                                 }
1252                                 parentAlbum.addAlbum(album);
1253                         } else {
1254                                 if (!topLevelAlbums.contains(album)) {
1255                                         topLevelAlbums.add(album);
1256                                 }
1257                         }
1258                 }
1259
1260                 /* load images. */
1261                 int imageCounter = 0;
1262                 while (true) {
1263                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1264                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1265                         if (imageId == null) {
1266                                 break;
1267                         }
1268                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1269                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1270                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1271                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1272                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1273                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1274                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1275                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1276                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1277                                 return;
1278                         }
1279                         Album album = getAlbum(albumId, false);
1280                         if (album == null) {
1281                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1282                                 return;
1283                         }
1284                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1285                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1286                         album.addImage(image);
1287                 }
1288
1289                 /* load avatar. */
1290                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1291                 if (avatarId != null) {
1292                         profile.setAvatar(getImage(avatarId, false));
1293                 }
1294
1295                 /* load options. */
1296                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1297                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1298                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1299                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1300                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1301                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1302
1303                 /* if we’re still here, Sone was loaded successfully. */
1304                 synchronized (sone) {
1305                         sone.setTime(soneTime);
1306                         sone.setProfile(profile);
1307                         sone.setPosts(posts);
1308                         sone.setReplies(replies);
1309                         sone.setLikePostIds(likedPostIds);
1310                         sone.setLikeReplyIds(likedReplyIds);
1311                         for (String friendId : friends) {
1312                                 followSone(sone, friendId);
1313                         }
1314                         sone.setAlbums(topLevelAlbums);
1315                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1316                 }
1317                 synchronized (knownSones) {
1318                         for (String friend : friends) {
1319                                 knownSones.add(friend);
1320                         }
1321                 }
1322                 database.storePosts(sone, posts);
1323                 for (Post post : posts) {
1324                         post.setKnown(true);
1325                 }
1326                 database.storePostReplies(sone, replies);
1327                 for (PostReply reply : replies) {
1328                         reply.setKnown(true);
1329                 }
1330         }
1331
1332         /**
1333          * Creates a new post.
1334          *
1335          * @param sone
1336          *            The Sone that creates the post
1337          * @param text
1338          *            The text of the post
1339          * @return The created post
1340          */
1341         public Post createPost(Sone sone, String text) {
1342                 return createPost(sone, System.currentTimeMillis(), text);
1343         }
1344
1345         /**
1346          * Creates a new post.
1347          *
1348          * @param sone
1349          *            The Sone that creates the post
1350          * @param time
1351          *            The time of the post
1352          * @param text
1353          *            The text of the post
1354          * @return The created post
1355          */
1356         public Post createPost(Sone sone, long time, String text) {
1357                 return createPost(sone, null, time, text);
1358         }
1359
1360         /**
1361          * Creates a new post.
1362          *
1363          * @param sone
1364          *            The Sone that creates the post
1365          * @param recipient
1366          *            The recipient Sone, or {@code null} if this post does not have
1367          *            a recipient
1368          * @param text
1369          *            The text of the post
1370          * @return The created post
1371          */
1372         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1373                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1374         }
1375
1376         /**
1377          * Creates a new post.
1378          *
1379          * @param sone
1380          *            The Sone that creates the post
1381          * @param recipient
1382          *            The recipient Sone, or {@code null} if this post does not have
1383          *            a recipient
1384          * @param time
1385          *            The time of the post
1386          * @param text
1387          *            The text of the post
1388          * @return The created post
1389          */
1390         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1391                 checkNotNull(text, "text must not be null");
1392                 checkArgument(text.trim().length() > 0, "text must not be empty");
1393                 if (!sone.isLocal()) {
1394                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1395                         return null;
1396                 }
1397                 PostBuilder postBuilder = database.newPostBuilder();
1398                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1399                 if (recipient.isPresent()) {
1400                         postBuilder.to(recipient.get().getId());
1401                 }
1402                 final Post post = postBuilder.build();
1403                 database.storePost(post);
1404                 eventBus.post(new NewPostFoundEvent(post));
1405                 sone.addPost(post);
1406                 touchConfiguration();
1407                 localElementTicker.schedule(new Runnable() {
1408
1409                         /**
1410                          * {@inheritDoc}
1411                          */
1412                         @Override
1413                         public void run() {
1414                                 markPostKnown(post);
1415                         }
1416                 }, 10, TimeUnit.SECONDS);
1417                 return post;
1418         }
1419
1420         /**
1421          * Deletes the given post.
1422          *
1423          * @param post
1424          *            The post to delete
1425          */
1426         public void deletePost(Post post) {
1427                 if (!post.getSone().isLocal()) {
1428                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1429                         return;
1430                 }
1431                 database.removePost(post);
1432                 eventBus.post(new PostRemovedEvent(post));
1433                 markPostKnown(post);
1434                 touchConfiguration();
1435         }
1436
1437         /**
1438          * Marks the given post as known, if it is currently not a known post
1439          * (according to {@link Post#isKnown()}).
1440          *
1441          * @param post
1442          *            The post to mark as known
1443          */
1444         public void markPostKnown(Post post) {
1445                 post.setKnown(true);
1446                 eventBus.post(new MarkPostKnownEvent(post));
1447                 touchConfiguration();
1448                 for (PostReply reply : getReplies(post.getId())) {
1449                         markReplyKnown(reply);
1450                 }
1451         }
1452
1453         /**
1454          * Bookmarks the given post.
1455          *
1456          * @param post
1457          *            The post to bookmark
1458          */
1459         public void bookmark(Post post) {
1460                 bookmarkPost(post.getId());
1461         }
1462
1463         /**
1464          * Bookmarks the post with the given ID.
1465          *
1466          * @param id
1467          *            The ID of the post to bookmark
1468          */
1469         public void bookmarkPost(String id) {
1470                 synchronized (bookmarkedPosts) {
1471                         bookmarkedPosts.add(id);
1472                 }
1473         }
1474
1475         /**
1476          * Removes the given post from the bookmarks.
1477          *
1478          * @param post
1479          *            The post to unbookmark
1480          */
1481         public void unbookmark(Post post) {
1482                 unbookmarkPost(post.getId());
1483         }
1484
1485         /**
1486          * Removes the post with the given ID from the bookmarks.
1487          *
1488          * @param id
1489          *            The ID of the post to unbookmark
1490          */
1491         public void unbookmarkPost(String id) {
1492                 synchronized (bookmarkedPosts) {
1493                         bookmarkedPosts.remove(id);
1494                 }
1495         }
1496
1497         /**
1498          * Creates a new reply.
1499          *
1500          * @param sone
1501          *            The Sone that creates the reply
1502          * @param post
1503          *            The post that this reply refers to
1504          * @param text
1505          *            The text of the reply
1506          * @return The created reply
1507          */
1508         public PostReply createReply(Sone sone, Post post, String text) {
1509                 checkNotNull(text, "text must not be null");
1510                 checkArgument(text.trim().length() > 0, "text must not be empty");
1511                 if (!sone.isLocal()) {
1512                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1513                         return null;
1514                 }
1515                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1516                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1517                 final PostReply reply = postReplyBuilder.build();
1518                 database.storePostReply(reply);
1519                 eventBus.post(new NewPostReplyFoundEvent(reply));
1520                 sone.addReply(reply);
1521                 touchConfiguration();
1522                 localElementTicker.schedule(new Runnable() {
1523
1524                         /**
1525                          * {@inheritDoc}
1526                          */
1527                         @Override
1528                         public void run() {
1529                                 markReplyKnown(reply);
1530                         }
1531                 }, 10, TimeUnit.SECONDS);
1532                 return reply;
1533         }
1534
1535         /**
1536          * Deletes the given reply.
1537          *
1538          * @param reply
1539          *            The reply to delete
1540          */
1541         public void deleteReply(PostReply reply) {
1542                 Sone sone = reply.getSone();
1543                 if (!sone.isLocal()) {
1544                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1545                         return;
1546                 }
1547                 database.removePostReply(reply);
1548                 markReplyKnown(reply);
1549                 sone.removeReply(reply);
1550                 touchConfiguration();
1551         }
1552
1553         /**
1554          * Marks the given reply as known, if it is currently not a known reply
1555          * (according to {@link Reply#isKnown()}).
1556          *
1557          * @param reply
1558          *            The reply to mark as known
1559          */
1560         public void markReplyKnown(PostReply reply) {
1561                 boolean previouslyKnown = reply.isKnown();
1562                 reply.setKnown(true);
1563                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1564                 if (!previouslyKnown) {
1565                         touchConfiguration();
1566                 }
1567         }
1568
1569         /**
1570          * Creates a new top-level album for the given Sone.
1571          *
1572          * @param sone
1573          *            The Sone to create the album for
1574          * @return The new album
1575          */
1576         public Album createAlbum(Sone sone) {
1577                 return createAlbum(sone, null);
1578         }
1579
1580         /**
1581          * Creates a new album for the given Sone.
1582          *
1583          * @param sone
1584          *            The Sone to create the album for
1585          * @param parent
1586          *            The parent of the album (may be {@code null} to create a
1587          *            top-level album)
1588          * @return The new album
1589          */
1590         public Album createAlbum(Sone sone, Album parent) {
1591                 Album album = new Album();
1592                 synchronized (albums) {
1593                         albums.put(album.getId(), album);
1594                 }
1595                 album.setSone(sone);
1596                 if (parent != null) {
1597                         parent.addAlbum(album);
1598                 } else {
1599                         sone.addAlbum(album);
1600                 }
1601                 return album;
1602         }
1603
1604         /**
1605          * Deletes the given album. The owner of the album has to be a local Sone,
1606          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1607          *
1608          * @param album
1609          *            The album to remove
1610          */
1611         public void deleteAlbum(Album album) {
1612                 checkNotNull(album, "album must not be null");
1613                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1614                 if (!album.isEmpty()) {
1615                         return;
1616                 }
1617                 if (album.getParent() == null) {
1618                         album.getSone().removeAlbum(album);
1619                 } else {
1620                         album.getParent().removeAlbum(album);
1621                 }
1622                 synchronized (albums) {
1623                         albums.remove(album.getId());
1624                 }
1625                 touchConfiguration();
1626         }
1627
1628         /**
1629          * Creates a new image.
1630          *
1631          * @param sone
1632          *            The Sone creating the image
1633          * @param album
1634          *            The album the image will be inserted into
1635          * @param temporaryImage
1636          *            The temporary image to create the image from
1637          * @return The newly created image
1638          */
1639         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1640                 checkNotNull(sone, "sone must not be null");
1641                 checkNotNull(album, "album must not be null");
1642                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1643                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1644                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1645                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1646                 album.addImage(image);
1647                 synchronized (images) {
1648                         images.put(image.getId(), image);
1649                 }
1650                 imageInserter.insertImage(temporaryImage, image);
1651                 return image;
1652         }
1653
1654         /**
1655          * Deletes the given image. This method will also delete a matching
1656          * temporary image.
1657          *
1658          * @see #deleteTemporaryImage(TemporaryImage)
1659          * @param image
1660          *            The image to delete
1661          */
1662         public void deleteImage(Image image) {
1663                 checkNotNull(image, "image must not be null");
1664                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1665                 deleteTemporaryImage(image.getId());
1666                 image.getAlbum().removeImage(image);
1667                 synchronized (images) {
1668                         images.remove(image.getId());
1669                 }
1670                 touchConfiguration();
1671         }
1672
1673         /**
1674          * Creates a new temporary image.
1675          *
1676          * @param mimeType
1677          *            The MIME type of the temporary image
1678          * @param imageData
1679          *            The encoded data of the image
1680          * @return The temporary image
1681          */
1682         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1683                 TemporaryImage temporaryImage = new TemporaryImage();
1684                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1685                 synchronized (temporaryImages) {
1686                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1687                 }
1688                 return temporaryImage;
1689         }
1690
1691         /**
1692          * Deletes the given temporary image.
1693          *
1694          * @param temporaryImage
1695          *            The temporary image to delete
1696          */
1697         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1698                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1699                 deleteTemporaryImage(temporaryImage.getId());
1700         }
1701
1702         /**
1703          * Deletes the temporary image with the given ID.
1704          *
1705          * @param imageId
1706          *            The ID of the temporary image to delete
1707          */
1708         public void deleteTemporaryImage(String imageId) {
1709                 checkNotNull(imageId, "imageId must not be null");
1710                 synchronized (temporaryImages) {
1711                         temporaryImages.remove(imageId);
1712                 }
1713                 Image image = getImage(imageId, false);
1714                 if (image != null) {
1715                         imageInserter.cancelImageInsert(image);
1716                 }
1717         }
1718
1719         /**
1720          * Notifies the core that the configuration, either of the core or of a
1721          * single local Sone, has changed, and that the configuration should be
1722          * saved.
1723          */
1724         public void touchConfiguration() {
1725                 lastConfigurationUpdate = System.currentTimeMillis();
1726         }
1727
1728         //
1729         // SERVICE METHODS
1730         //
1731
1732         /**
1733          * Starts the core.
1734          */
1735         @Override
1736         public void serviceStart() {
1737                 loadConfiguration();
1738                 updateChecker.start();
1739                 identityManager.start();
1740                 webOfTrustUpdater.init();
1741                 webOfTrustUpdater.start();
1742                 database.start();
1743         }
1744
1745         /**
1746          * {@inheritDoc}
1747          */
1748         @Override
1749         public void serviceRun() {
1750                 long lastSaved = System.currentTimeMillis();
1751                 while (!shouldStop()) {
1752                         sleep(1000);
1753                         long now = System.currentTimeMillis();
1754                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1755                                 for (Sone localSone : getLocalSones()) {
1756                                         saveSone(localSone);
1757                                 }
1758                                 saveConfiguration();
1759                                 lastSaved = now;
1760                         }
1761                 }
1762         }
1763
1764         /**
1765          * Stops the core.
1766          */
1767         @Override
1768         public void serviceStop() {
1769                 localElementTicker.shutdownNow();
1770                 synchronized (sones) {
1771                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1772                                 soneInserter.getValue().stop();
1773                                 saveSone(soneInserter.getKey());
1774                         }
1775                 }
1776                 saveConfiguration();
1777                 database.stop();
1778                 webOfTrustUpdater.stop();
1779                 updateChecker.stop();
1780                 soneDownloader.stop();
1781                 soneDownloaders.shutdown();
1782                 identityManager.stop();
1783         }
1784
1785         //
1786         // PRIVATE METHODS
1787         //
1788
1789         /**
1790          * Saves the given Sone. This will persist all local settings for the given
1791          * Sone, such as the friends list and similar, private options.
1792          *
1793          * @param sone
1794          *            The Sone to save
1795          */
1796         private synchronized void saveSone(Sone sone) {
1797                 if (!sone.isLocal()) {
1798                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1799                         return;
1800                 }
1801                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1802                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1803                         return;
1804                 }
1805
1806                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1807                 try {
1808                         /* save Sone into configuration. */
1809                         String sonePrefix = "Sone/" + sone.getId();
1810                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1811                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1812
1813                         /* save profile. */
1814                         Profile profile = sone.getProfile();
1815                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1816                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1817                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1818                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1819                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1820                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1821                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1822
1823                         /* save profile fields. */
1824                         int fieldCounter = 0;
1825                         for (Field profileField : profile.getFields()) {
1826                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1827                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1828                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1829                         }
1830                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1831
1832                         /* save posts. */
1833                         int postCounter = 0;
1834                         for (Post post : sone.getPosts()) {
1835                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1836                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1837                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1838                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1839                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1840                         }
1841                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1842
1843                         /* save replies. */
1844                         int replyCounter = 0;
1845                         for (PostReply reply : sone.getReplies()) {
1846                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1847                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1848                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1849                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1850                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1851                         }
1852                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1853
1854                         /* save post likes. */
1855                         int postLikeCounter = 0;
1856                         for (String postId : sone.getLikedPostIds()) {
1857                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1858                         }
1859                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1860
1861                         /* save reply likes. */
1862                         int replyLikeCounter = 0;
1863                         for (String replyId : sone.getLikedReplyIds()) {
1864                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1865                         }
1866                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1867
1868                         /* save friends. */
1869                         int friendCounter = 0;
1870                         for (String friendId : sone.getFriends()) {
1871                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1872                         }
1873                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1874
1875                         /* save albums. first, collect in a flat structure, top-level first. */
1876                         List<Album> albums = FluentIterable.from(sone.getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1877
1878                         int albumCounter = 0;
1879                         for (Album album : albums) {
1880                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1881                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1882                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1883                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1884                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1885                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1886                         }
1887                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1888
1889                         /* save images. */
1890                         int imageCounter = 0;
1891                         for (Album album : albums) {
1892                                 for (Image image : album.getImages()) {
1893                                         if (!image.isInserted()) {
1894                                                 continue;
1895                                         }
1896                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1897                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1898                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1899                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1900                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1901                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1902                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1903                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1904                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1905                                 }
1906                         }
1907                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1908
1909                         /* save options. */
1910                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1911                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1912                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1913                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1914                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1915                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
1916
1917                         configuration.save();
1918
1919                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1920
1921                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1922                 } catch (ConfigurationException ce1) {
1923                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1924                 }
1925         }
1926
1927         /**
1928          * Saves the current options.
1929          */
1930         private void saveConfiguration() {
1931                 synchronized (configuration) {
1932                         if (storingConfiguration) {
1933                                 logger.log(Level.FINE, "Already storing configuration…");
1934                                 return;
1935                         }
1936                         storingConfiguration = true;
1937                 }
1938
1939                 /* store the options first. */
1940                 try {
1941                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1942                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1943                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1944                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1945                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1946                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1947                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1948                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1949                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1950                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1951                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1952                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1953
1954                         /* save known Sones. */
1955                         int soneCounter = 0;
1956                         synchronized (knownSones) {
1957                                 for (String knownSoneId : knownSones) {
1958                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1959                                 }
1960                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1961                         }
1962
1963                         /* save Sone following times. */
1964                         soneCounter = 0;
1965                         synchronized (soneFollowingTimes) {
1966                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1967                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1968                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1969                                         ++soneCounter;
1970                                 }
1971                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1972                         }
1973
1974                         /* save known posts. */
1975                         database.save();
1976
1977                         /* save bookmarked posts. */
1978                         int bookmarkedPostCounter = 0;
1979                         synchronized (bookmarkedPosts) {
1980                                 for (String bookmarkedPostId : bookmarkedPosts) {
1981                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1982                                 }
1983                         }
1984                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1985
1986                         /* now save it. */
1987                         configuration.save();
1988
1989                 } catch (ConfigurationException ce1) {
1990                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1991                 } catch (DatabaseException de1) {
1992                         logger.log(Level.SEVERE, "Could not save database!", de1);
1993                 } finally {
1994                         synchronized (configuration) {
1995                                 storingConfiguration = false;
1996                         }
1997                 }
1998         }
1999
2000         /**
2001          * Loads the configuration.
2002          */
2003         private void loadConfiguration() {
2004                 /* create options. */
2005                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2006
2007                         @Override
2008                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2009                                 SoneInserter.setInsertionDelay(newValue);
2010                         }
2011
2012                 }));
2013                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2014                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2015                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2016                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2017                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2018                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
2019                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
2020                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2021                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2022
2023                         @Override
2024                         @SuppressWarnings("synthetic-access")
2025                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2026                                 fcpInterface.setActive(newValue);
2027                         }
2028                 }));
2029                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2030
2031                         @Override
2032                         @SuppressWarnings("synthetic-access")
2033                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2034                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2035                         }
2036
2037                 }));
2038
2039                 loadConfigurationValue("InsertionDelay");
2040                 loadConfigurationValue("PostsPerPage");
2041                 loadConfigurationValue("ImagesPerPage");
2042                 loadConfigurationValue("CharactersPerPost");
2043                 loadConfigurationValue("PostCutOffLength");
2044                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2045                 loadConfigurationValue("PositiveTrust");
2046                 loadConfigurationValue("NegativeTrust");
2047                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2048                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2049                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2050
2051                 /* load known Sones. */
2052                 int soneCounter = 0;
2053                 while (true) {
2054                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2055                         if (knownSoneId == null) {
2056                                 break;
2057                         }
2058                         synchronized (knownSones) {
2059                                 knownSones.add(knownSoneId);
2060                         }
2061                 }
2062
2063                 /* load Sone following times. */
2064                 soneCounter = 0;
2065                 while (true) {
2066                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2067                         if (soneId == null) {
2068                                 break;
2069                         }
2070                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2071                         synchronized (soneFollowingTimes) {
2072                                 soneFollowingTimes.put(soneId, time);
2073                         }
2074                         ++soneCounter;
2075                 }
2076
2077                 /* load bookmarked posts. */
2078                 int bookmarkedPostCounter = 0;
2079                 while (true) {
2080                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2081                         if (bookmarkedPostId == null) {
2082                                 break;
2083                         }
2084                         synchronized (bookmarkedPosts) {
2085                                 bookmarkedPosts.add(bookmarkedPostId);
2086                         }
2087                 }
2088
2089         }
2090
2091         /**
2092          * Loads an {@link Integer} configuration value for the option with the
2093          * given name, logging validation failures.
2094          *
2095          * @param optionName
2096          *            The name of the option to load
2097          */
2098         private void loadConfigurationValue(String optionName) {
2099                 try {
2100                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2101                 } catch (IllegalArgumentException iae1) {
2102                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2103                 }
2104         }
2105
2106         /**
2107          * Notifies the core that a new {@link OwnIdentity} was added.
2108          *
2109          * @param ownIdentityAddedEvent
2110          *            The event
2111          */
2112         @Subscribe
2113         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2114                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2115                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2116                 if (ownIdentity.hasContext("Sone")) {
2117                         addLocalSone(ownIdentity);
2118                 }
2119         }
2120
2121         /**
2122          * Notifies the core that an {@link OwnIdentity} was removed.
2123          *
2124          * @param ownIdentityRemovedEvent
2125          *            The event
2126          */
2127         @Subscribe
2128         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2129                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2130                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2131                 trustedIdentities.removeAll(ownIdentity);
2132         }
2133
2134         /**
2135          * Notifies the core that a new {@link Identity} was added.
2136          *
2137          * @param identityAddedEvent
2138          *            The event
2139          */
2140         @Subscribe
2141         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2142                 Identity identity = identityAddedEvent.identity();
2143                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2144                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
2145                 addRemoteSone(identity);
2146         }
2147
2148         /**
2149          * Notifies the core that an {@link Identity} was updated.
2150          *
2151          * @param identityUpdatedEvent
2152          *            The event
2153          */
2154         @Subscribe
2155         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2156                 final Identity identity = identityUpdatedEvent.identity();
2157                 soneDownloaders.execute(new Runnable() {
2158
2159                         @Override
2160                         @SuppressWarnings("synthetic-access")
2161                         public void run() {
2162                                 Sone sone = getRemoteSone(identity.getId(), false);
2163                                 sone.setIdentity(identity);
2164                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2165                                 soneDownloader.addSone(sone);
2166                                 soneDownloader.fetchSone(sone);
2167                         }
2168                 });
2169         }
2170
2171         /**
2172          * Notifies the core that an {@link Identity} was removed.
2173          *
2174          * @param identityRemovedEvent
2175          *            The event
2176          */
2177         @Subscribe
2178         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2179                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2180                 Identity identity = identityRemovedEvent.identity();
2181                 trustedIdentities.remove(ownIdentity, identity);
2182                 boolean foundIdentity = false;
2183                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
2184                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2185                                 continue;
2186                         }
2187                         if (trustedIdentity.getValue().contains(identity)) {
2188                                 foundIdentity = true;
2189                         }
2190                 }
2191                 if (foundIdentity) {
2192                         /* some local identity still trusts this identity, don’t remove. */
2193                         return;
2194                 }
2195                 Optional<Sone> sone = getSone(identity.getId());
2196                 if (!sone.isPresent()) {
2197                         /* TODO - we don’t have the Sone anymore. should this happen? */
2198                         return;
2199                 }
2200                 database.removePosts(sone.get());
2201                 for (Post post : sone.get().getPosts()) {
2202                         eventBus.post(new PostRemovedEvent(post));
2203                 }
2204                 database.removePostReplies(sone.get());
2205                 for (PostReply reply : sone.get().getReplies()) {
2206                         eventBus.post(new PostReplyRemovedEvent(reply));
2207                 }
2208                 synchronized (sones) {
2209                         sones.remove(identity.getId());
2210                 }
2211                 eventBus.post(new SoneRemovedEvent(sone.get()));
2212         }
2213
2214         /**
2215          * Deletes the temporary image.
2216          *
2217          * @param imageInsertFinishedEvent
2218          *            The event
2219          */
2220         @Subscribe
2221         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2222                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2223                 imageInsertFinishedEvent.image().setKey(imageInsertFinishedEvent.resultingUri().toString());
2224                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2225                 touchConfiguration();
2226         }
2227
2228 }