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.Collections;
  27 import java.util.HashMap;
  28 import java.util.HashSet;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Map.Entry;
  32 import java.util.Set;
  33 import java.util.concurrent.ExecutorService;
  34 import java.util.concurrent.Executors;
  35 import java.util.concurrent.ScheduledExecutorService;
  36 import java.util.concurrent.TimeUnit;
  37 import java.util.logging.Level;
  38 import java.util.logging.Logger;
  39
  40 import net.pterodactylus.sone.core.Options.DefaultOption;
  41 import net.pterodactylus.sone.core.Options.Option;
  42 import net.pterodactylus.sone.core.Options.OptionWatcher;
  43 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  46 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  47 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  49 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  50 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  51 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  52 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  53 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  54 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  55 import net.pterodactylus.sone.data.Album;
  56 import net.pterodactylus.sone.data.Client;
  57 import net.pterodactylus.sone.data.Image;
  58 import net.pterodactylus.sone.data.Post;
  59 import net.pterodactylus.sone.data.PostReply;
  60 import net.pterodactylus.sone.data.Profile;
  61 import net.pterodactylus.sone.data.Profile.Field;
  62 import net.pterodactylus.sone.data.Reply;
  63 import net.pterodactylus.sone.data.Sone;
  64 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  65 import net.pterodactylus.sone.data.Sone.SoneStatus;
  66 import net.pterodactylus.sone.data.TemporaryImage;
  67 import net.pterodactylus.sone.database.Database;
  68 import net.pterodactylus.sone.database.DatabaseException;
  69 import net.pterodactylus.sone.database.PostBuilder;
  70 import net.pterodactylus.sone.database.PostProvider;
  71 import net.pterodactylus.sone.database.PostReplyBuilder;
  72 import net.pterodactylus.sone.database.PostReplyProvider;
  73 import net.pterodactylus.sone.database.SoneProvider;
  74 import net.pterodactylus.sone.fcp.FcpInterface;
  75 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  76 import net.pterodactylus.sone.freenet.wot.Identity;
  77 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  78 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  83 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  84 import net.pterodactylus.sone.main.SonePlugin;
  85 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  86 import net.pterodactylus.util.config.Configuration;
  87 import net.pterodactylus.util.config.ConfigurationException;
  88 import net.pterodactylus.util.logging.Logging;
  89 import net.pterodactylus.util.number.Numbers;
  90 import net.pterodactylus.util.service.AbstractService;
  91 import net.pterodactylus.util.thread.NamedThreadFactory;
  92
  93 import com.google.common.base.Optional;
  94 import com.google.common.base.Predicate;
  95 import com.google.common.base.Predicates;
  96 import com.google.common.collect.Collections2;
  97 import com.google.common.collect.FluentIterable;
  98 import com.google.common.eventbus.EventBus;
  99 import com.google.common.eventbus.Subscribe;
 100 import com.google.inject.Inject;
 101
 102 import freenet.keys.FreenetURI;
 103
 104 /**
 105  * The Sone core.
 106  *
 107  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 108  */
 109 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 110
 111         /** The logger. */
 112         private static final Logger logger = Logging.getLogger(Core.class);
 113
 114         /** The start time. */
 115         private final long startupTime = System.currentTimeMillis();
 116
 117         /** The options. */
 118         private final Options options = new Options();
 119
 120         /** The preferences. */
 121         private final Preferences preferences = new Preferences(options);
 122
 123         /** The event bus. */
 124         private final EventBus eventBus;
 125
 126         /** The configuration. */
 127         private Configuration configuration;
 128
 129         /** Whether we’re currently saving the configuration. */
 130         private boolean storingConfiguration = false;
 131
 132         /** The identity manager. */
 133         private final IdentityManager identityManager;
 134
 135         /** Interface to freenet. */
 136         private final FreenetInterface freenetInterface;
 137
 138         /** The Sone downloader. */
 139         private final SoneDownloader soneDownloader;
 140
 141         /** The image inserter. */
 142         private final ImageInserter imageInserter;
 143
 144         /** Sone downloader thread-pool. */
 145         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 146
 147         /** The update checker. */
 148         private final UpdateChecker updateChecker;
 149
 150         /** The trust updater. */
 151         private final WebOfTrustUpdater webOfTrustUpdater;
 152
 153         /** The FCP interface. */
 154         private volatile FcpInterface fcpInterface;
 155
 156         /** The times Sones were followed. */
 157         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 158
 159         /** Locked local Sones. */
 160         /* synchronize on itself. */
 161         private final Set<Sone> lockedSones = new HashSet<Sone>();
 162
 163         /** Sone inserters. */
 164         /* synchronize access on this on sones. */
 165         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 166
 167         /** Sone rescuers. */
 168         /* synchronize access on this on sones. */
 169         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 170
 171         /** All Sones. */
 172         /* synchronize access on this on itself. */
 173         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 174
 175         /** All known Sones. */
 176         private final Set<String> knownSones = new HashSet<String>();
 177
 178         /** The post database. */
 179         private final Database database;
 180
 181         /** All bookmarked posts. */
 182         /* synchronize access on itself. */
 183         private final Set<String> bookmarkedPosts = new HashSet<String>();
 184
 185         /** Trusted identities, sorted by own identities. */
 186         private final Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 187
 188         /** All known albums. */
 189         private final Map<String, Album> albums = new HashMap<String, Album>();
 190
 191         /** All known images. */
 192         private final Map<String, Image> images = new HashMap<String, Image>();
 193
 194         /** All temporary images. */
 195         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 196
 197         /** Ticker for threads that mark own elements as known. */
 198         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 199
 200         /** The time the configuration was last touched. */
 201         private volatile long lastConfigurationUpdate;
 202
 203         /**
 204          * Creates a new core.
 205          *
 206          * @param configuration
 207          *            The configuration of the core
 208          * @param freenetInterface
 209          *            The freenet interface
 210          * @param identityManager
 211          *            The identity manager
 212          * @param webOfTrustUpdater
 213          *            The WebOfTrust updater
 214          * @param eventBus
 215          *            The event bus
 216          * @param database
 217          *            The database
 218          */
 219         @Inject
 220         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 221                 super("Sone Core");
 222                 this.configuration = configuration;
 223                 this.freenetInterface = freenetInterface;
 224                 this.identityManager = identityManager;
 225                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 226                 this.imageInserter = new ImageInserter(freenetInterface);
 227                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 228                 this.webOfTrustUpdater = webOfTrustUpdater;
 229                 this.eventBus = eventBus;
 230                 this.database = database;
 231         }
 232
 233         //
 234         // ACCESSORS
 235         //
 236
 237         /**
 238          * Returns the time Sone was started.
 239          *
 240          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 241          */
 242         public long getStartupTime() {
 243                 return startupTime;
 244         }
 245
 246         /**
 247          * Sets the configuration to use. This will automatically save the current
 248          * configuration to the given configuration.
 249          *
 250          * @param configuration
 251          *            The new configuration to use
 252          */
 253         public void setConfiguration(Configuration configuration) {
 254                 this.configuration = configuration;
 255                 touchConfiguration();
 256         }
 257
 258         /**
 259          * Returns the options used by the core.
 260          *
 261          * @return The options of the core
 262          */
 263         public Preferences getPreferences() {
 264                 return preferences;
 265         }
 266
 267         /**
 268          * Returns the identity manager used by the core.
 269          *
 270          * @return The identity manager
 271          */
 272         public IdentityManager getIdentityManager() {
 273                 return identityManager;
 274         }
 275
 276         /**
 277          * Returns the update checker.
 278          *
 279          * @return The update checker
 280          */
 281         public UpdateChecker getUpdateChecker() {
 282                 return updateChecker;
 283         }
 284
 285         /**
 286          * Sets the FCP interface to use.
 287          *
 288          * @param fcpInterface
 289          *            The FCP interface to use
 290          */
 291         public void setFcpInterface(FcpInterface fcpInterface) {
 292                 this.fcpInterface = fcpInterface;
 293         }
 294
 295         /**
 296          * Returns the Sone rescuer for the given local Sone.
 297          *
 298          * @param sone
 299          *            The local Sone to get the rescuer for
 300          * @return The Sone rescuer for the given Sone
 301          */
 302         public SoneRescuer getSoneRescuer(Sone sone) {
 303                 checkNotNull(sone, "sone must not be null");
 304                 checkArgument(sone.isLocal(), "sone must be local");
 305                 synchronized (sones) {
 306                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 307                         if (soneRescuer == null) {
 308                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 309                                 soneRescuers.put(sone, soneRescuer);
 310                                 soneRescuer.start();
 311                         }
 312                         return soneRescuer;
 313                 }
 314         }
 315
 316         /**
 317          * Returns whether the given Sone is currently locked.
 318          *
 319          * @param sone
 320          *            The sone to check
 321          * @return {@code true} if the Sone is locked, {@code false} if it is not
 322          */
 323         public boolean isLocked(Sone sone) {
 324                 synchronized (lockedSones) {
 325                         return lockedSones.contains(sone);
 326                 }
 327         }
 328
 329         /**
 330          * {@inheritDocs}
 331          */
 332         @Override
 333         public Collection<Sone> getSones() {
 334                 synchronized (sones) {
 335                         return Collections.unmodifiableCollection(sones.values());
 336                 }
 337         }
 338
 339         /**
 340          * Returns the Sone with the given ID, regardless whether it’s local or
 341          * remote.
 342          *
 343          * @param id
 344          *            The ID of the Sone to get
 345          * @return The Sone with the given ID, or {@code null} if there is no such
 346          *         Sone
 347          */
 348         @Override
 349         public Optional<Sone> getSone(String id) {
 350                 synchronized (sones) {
 351                         return Optional.fromNullable(sones.get(id));
 352                 }
 353         }
 354
 355         /**
 356          * {@inheritDocs}
 357          */
 358         @Override
 359         public Collection<Sone> getLocalSones() {
 360                 synchronized (sones) {
 361                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 362
 363                                 @Override
 364                                 public boolean apply(Sone sone) {
 365                                         return sone.isLocal();
 366                                 }
 367                         });
 368                 }
 369         }
 370
 371         /**
 372          * Returns the local Sone with the given ID, optionally creating a new Sone.
 373          *
 374          * @param id
 375          *            The ID of the Sone
 376          * @param create
 377          *            {@code true} to create a new Sone if none exists,
 378          *            {@code false} to return null if none exists
 379          * @return The Sone with the given ID, or {@code null}
 380          */
 381         public Sone getLocalSone(String id, boolean create) {
 382                 synchronized (sones) {
 383                         Sone sone = sones.get(id);
 384                         if ((sone == null) && create) {
 385                                 sone = new Sone(id, true);
 386                                 sones.put(id, sone);
 387                         }
 388                         if ((sone != null) && !sone.isLocal()) {
 389                                 sone = new Sone(id, true);
 390                                 sones.put(id, sone);
 391                         }
 392                         return sone;
 393                 }
 394         }
 395
 396         /**
 397          * {@inheritDocs}
 398          */
 399         @Override
 400         public Collection<Sone> getRemoteSones() {
 401                 synchronized (sones) {
 402                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 403
 404                                 @Override
 405                                 public boolean apply(Sone sone) {
 406                                         return !sone.isLocal();
 407                                 }
 408                         });
 409                 }
 410         }
 411
 412         /**
 413          * Returns the remote Sone with the given ID.
 414          *
 415          * @param id
 416          *            The ID of the remote Sone to get
 417          * @param create
 418          *            {@code true} to always create a Sone, {@code false} to return
 419          *            {@code null} if no Sone with the given ID exists
 420          * @return The Sone with the given ID
 421          */
 422         public Sone getRemoteSone(String id, boolean create) {
 423                 synchronized (sones) {
 424                         Sone sone = sones.get(id);
 425                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 426                                 sone = new Sone(id, false);
 427                                 sones.put(id, sone);
 428                         }
 429                         return sone;
 430                 }
 431         }
 432
 433         /**
 434          * Returns whether the given Sone has been modified.
 435          *
 436          * @param sone
 437          *            The Sone to check for modifications
 438          * @return {@code true} if a modification has been detected in the Sone,
 439          *         {@code false} otherwise
 440          */
 441         public boolean isModifiedSone(Sone sone) {
 442                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 443         }
 444
 445         /**
 446          * Returns the time when the given was first followed by any local Sone.
 447          *
 448          * @param sone
 449          *            The Sone to get the time for
 450          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 451          *         been followed, or {@link Long#MAX_VALUE}
 452          */
 453         public long getSoneFollowingTime(Sone sone) {
 454                 synchronized (soneFollowingTimes) {
 455                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 456                 }
 457         }
 458
 459         /**
 460          * Returns whether the target Sone is trusted by the origin Sone.
 461          *
 462          * @param origin
 463          *            The origin Sone
 464          * @param target
 465          *            The target Sone
 466          * @return {@code true} if the target Sone is trusted by the origin Sone
 467          */
 468         public boolean isSoneTrusted(Sone origin, Sone target) {
 469                 checkNotNull(origin, "origin must not be null");
 470                 checkNotNull(target, "target must not be null");
 471                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 472                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 473         }
 474
 475         /**
 476          * Returns a post builder.
 477          *
 478          * @return A new post builder
 479          */
 480         public PostBuilder postBuilder() {
 481                 return database.newPostBuilder();
 482         }
 483
 484         /**
 485          * {@inheritDoc}
 486          */
 487         @Override
 488         public Optional<Post> getPost(String postId) {
 489                 return database.getPost(postId);
 490         }
 491
 492         /**
 493          * {@inheritDocs}
 494          */
 495         @Override
 496         public Collection<Post> getPosts(String soneId) {
 497                 return database.getPosts(soneId);
 498         }
 499
 500         /**
 501          * {@inheritDoc}
 502          */
 503         @Override
 504         public Collection<Post> getDirectedPosts(final String recipientId) {
 505                 checkNotNull(recipientId, "recipient must not be null");
 506                 return database.getDirectedPosts(recipientId);
 507         }
 508
 509         /**
 510          * Returns a post reply builder.
 511          *
 512          * @return A new post reply builder
 513          */
 514         public PostReplyBuilder postReplyBuilder() {
 515                 return database.newPostReplyBuilder();
 516         }
 517
 518         /**
 519          * {@inheritDoc}
 520          */
 521         @Override
 522         public Optional<PostReply> getPostReply(String replyId) {
 523                 return database.getPostReply(replyId);
 524         }
 525
 526         /**
 527          * {@inheritDoc}
 528          */
 529         @Override
 530         public List<PostReply> getReplies(final String postId) {
 531                 return database.getReplies(postId);
 532         }
 533
 534         /**
 535          * Returns all Sones that have liked the given post.
 536          *
 537          * @param post
 538          *            The post to get the liking Sones for
 539          * @return The Sones that like the given post
 540          */
 541         public Set<Sone> getLikes(Post post) {
 542                 Set<Sone> sones = new HashSet<Sone>();
 543                 for (Sone sone : getSones()) {
 544                         if (sone.getLikedPostIds().contains(post.getId())) {
 545                                 sones.add(sone);
 546                         }
 547                 }
 548                 return sones;
 549         }
 550
 551         /**
 552          * Returns all Sones that have liked the given reply.
 553          *
 554          * @param reply
 555          *            The reply to get the liking Sones for
 556          * @return The Sones that like the given reply
 557          */
 558         public Set<Sone> getLikes(PostReply reply) {
 559                 Set<Sone> sones = new HashSet<Sone>();
 560                 for (Sone sone : getSones()) {
 561                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 562                                 sones.add(sone);
 563                         }
 564                 }
 565                 return sones;
 566         }
 567
 568         /**
 569          * Returns whether the given post is bookmarked.
 570          *
 571          * @param post
 572          *            The post to check
 573          * @return {@code true} if the given post is bookmarked, {@code false}
 574          *         otherwise
 575          */
 576         public boolean isBookmarked(Post post) {
 577                 return isPostBookmarked(post.getId());
 578         }
 579
 580         /**
 581          * Returns whether the post with the given ID is bookmarked.
 582          *
 583          * @param id
 584          *            The ID of the post to check
 585          * @return {@code true} if the post with the given ID is bookmarked,
 586          *         {@code false} otherwise
 587          */
 588         public boolean isPostBookmarked(String id) {
 589                 synchronized (bookmarkedPosts) {
 590                         return bookmarkedPosts.contains(id);
 591                 }
 592         }
 593
 594         /**
 595          * Returns all currently known bookmarked posts.
 596          *
 597          * @return All bookmarked posts
 598          */
 599         public Set<Post> getBookmarkedPosts() {
 600                 Set<Post> posts = new HashSet<Post>();
 601                 synchronized (bookmarkedPosts) {
 602                         for (String bookmarkedPostId : bookmarkedPosts) {
 603                                 Optional<Post> post = getPost(bookmarkedPostId);
 604                                 if (!post.isPresent()) {
 605                                         posts.add(post.get());
 606                                 }
 607                         }
 608                 }
 609                 return posts;
 610         }
 611
 612         /**
 613          * Returns the album with the given ID, creating a new album if no album
 614          * with the given ID can be found.
 615          *
 616          * @param albumId
 617          *            The ID of the album
 618          * @return The album with the given ID
 619          */
 620         public Album getAlbum(String albumId) {
 621                 return getAlbum(albumId, true);
 622         }
 623
 624         /**
 625          * Returns the album with the given ID, optionally creating a new album if
 626          * an album with the given ID can not be found.
 627          *
 628          * @param albumId
 629          *            The ID of the album
 630          * @param create
 631          *            {@code true} to create a new album if none exists for the
 632          *            given ID
 633          * @return The album with the given ID, or {@code null} if no album with the
 634          *         given ID exists and {@code create} is {@code false}
 635          */
 636         public Album getAlbum(String albumId, boolean create) {
 637                 synchronized (albums) {
 638                         Album album = albums.get(albumId);
 639                         if (create && (album == null)) {
 640                                 album = new Album(albumId);
 641                                 albums.put(albumId, album);
 642                         }
 643                         return album;
 644                 }
 645         }
 646
 647         /**
 648          * Returns the image with the given ID, creating it if necessary.
 649          *
 650          * @param imageId
 651          *            The ID of the image
 652          * @return The image with the given ID
 653          */
 654         public Image getImage(String imageId) {
 655                 return getImage(imageId, true);
 656         }
 657
 658         /**
 659          * Returns the image with the given ID, optionally creating it if it does
 660          * not exist.
 661          *
 662          * @param imageId
 663          *            The ID of the image
 664          * @param create
 665          *            {@code true} to create an image if none exists with the given
 666          *            ID
 667          * @return The image with the given ID, or {@code null} if none exists and
 668          *         none was created
 669          */
 670         public Image getImage(String imageId, boolean create) {
 671                 synchronized (images) {
 672                         Image image = images.get(imageId);
 673                         if (create && (image == null)) {
 674                                 image = new Image(imageId);
 675                                 images.put(imageId, image);
 676                         }
 677                         return image;
 678                 }
 679         }
 680
 681         /**
 682          * Returns the temporary image with the given ID.
 683          *
 684          * @param imageId
 685          *            The ID of the temporary image
 686          * @return The temporary image, or {@code null} if there is no temporary
 687          *         image with the given ID
 688          */
 689         public TemporaryImage getTemporaryImage(String imageId) {
 690                 synchronized (temporaryImages) {
 691                         return temporaryImages.get(imageId);
 692                 }
 693         }
 694
 695         //
 696         // ACTIONS
 697         //
 698
 699         /**
 700          * Locks the given Sone. A locked Sone will not be inserted by
 701          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 702          * again.
 703          *
 704          * @param sone
 705          *            The sone to lock
 706          */
 707         public void lockSone(Sone sone) {
 708                 synchronized (lockedSones) {
 709                         if (lockedSones.add(sone)) {
 710                                 eventBus.post(new SoneLockedEvent(sone));
 711                         }
 712                 }
 713         }
 714
 715         /**
 716          * Unlocks the given Sone.
 717          *
 718          * @see #lockSone(Sone)
 719          * @param sone
 720          *            The sone to unlock
 721          */
 722         public void unlockSone(Sone sone) {
 723                 synchronized (lockedSones) {
 724                         if (lockedSones.remove(sone)) {
 725                                 eventBus.post(new SoneUnlockedEvent(sone));
 726                         }
 727                 }
 728         }
 729
 730         /**
 731          * Adds a local Sone from the given own identity.
 732          *
 733          * @param ownIdentity
 734          *            The own identity to create a Sone from
 735          * @return The added (or already existing) Sone
 736          */
 737         public Sone addLocalSone(OwnIdentity ownIdentity) {
 738                 if (ownIdentity == null) {
 739                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 740                         return null;
 741                 }
 742                 synchronized (sones) {
 743                         final Sone sone;
 744                         try {
 745                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 746                         } catch (MalformedURLException mue1) {
 747                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 748                                 return null;
 749                         }
 750                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 751                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 752                         sone.setKnown(true);
 753                         /* TODO - load posts ’n stuff */
 754                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
 755                         sones.put(ownIdentity.getId(), sone);
 756                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 757                         soneInserters.put(sone, soneInserter);
 758                         sone.setStatus(SoneStatus.idle);
 759                         loadSone(sone);
 760                         soneInserter.start();
 761                         return sone;
 762                 }
 763         }
 764
 765         /**
 766          * Creates a new Sone for the given own identity.
 767          *
 768          * @param ownIdentity
 769          *            The own identity to create a Sone for
 770          * @return The created Sone
 771          */
 772         public Sone createSone(OwnIdentity ownIdentity) {
 773                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 774                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 775                         return null;
 776                 }
 777                 Sone sone = addLocalSone(ownIdentity);
 778                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 779                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 780                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 781                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 782                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 783                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 784
 785                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 786                 touchConfiguration();
 787                 return sone;
 788         }
 789
 790         /**
 791          * Adds the Sone of the given identity.
 792          *
 793          * @param identity
 794          *            The identity whose Sone to add
 795          * @return The added or already existing Sone
 796          */
 797         public Sone addRemoteSone(Identity identity) {
 798                 if (identity == null) {
 799                         logger.log(Level.WARNING, "Given Identity is null!");
 800                         return null;
 801                 }
 802                 synchronized (sones) {
 803                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 804                         boolean newSone = sone.getRequestUri() == null;
 805                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 806                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 807                         if (newSone) {
 808                                 synchronized (knownSones) {
 809                                         newSone = !knownSones.contains(sone.getId());
 810                                 }
 811                                 sone.setKnown(!newSone);
 812                                 if (newSone) {
 813                                         eventBus.post(new NewSoneFoundEvent(sone));
 814                                         for (Sone localSone : getLocalSones()) {
 815                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 816                                                         followSone(localSone, sone.getId());
 817                                                 }
 818                                         }
 819                                 }
 820                         }
 821                         soneDownloader.addSone(sone);
 822                         soneDownloaders.execute(new Runnable() {
 823
 824                                 @Override
 825                                 @SuppressWarnings("synthetic-access")
 826                                 public void run() {
 827                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 828                                 }
 829
 830                         });
 831                         return sone;
 832                 }
 833         }
 834
 835         /**
 836          * Lets the given local Sone follow the Sone with the given ID.
 837          *
 838          * @param sone
 839          *            The local Sone that should follow another Sone
 840          * @param soneId
 841          *            The ID of the Sone to follow
 842          */
 843         public void followSone(Sone sone, String soneId) {
 844                 checkNotNull(sone, "sone must not be null");
 845                 checkNotNull(soneId, "soneId must not be null");
 846                 sone.addFriend(soneId);
 847                 synchronized (soneFollowingTimes) {
 848                         if (!soneFollowingTimes.containsKey(soneId)) {
 849                                 long now = System.currentTimeMillis();
 850                                 soneFollowingTimes.put(soneId, now);
 851                                 Optional<Sone> followedSone = getSone(soneId);
 852                                 if (!followedSone.isPresent()) {
 853                                         return;
 854                                 }
 855                                 for (Post post : followedSone.get().getPosts()) {
 856                                         if (post.getTime() < now) {
 857                                                 markPostKnown(post);
 858                                         }
 859                                 }
 860                                 for (PostReply reply : followedSone.get().getReplies()) {
 861                                         if (reply.getTime() < now) {
 862                                                 markReplyKnown(reply);
 863                                         }
 864                                 }
 865                         }
 866                 }
 867                 touchConfiguration();
 868         }
 869
 870         /**
 871          * Lets the given local Sone unfollow the Sone with the given ID.
 872          *
 873          * @param sone
 874          *            The local Sone that should unfollow another Sone
 875          * @param soneId
 876          *            The ID of the Sone being unfollowed
 877          */
 878         public void unfollowSone(Sone sone, String soneId) {
 879                 checkNotNull(sone, "sone must not be null");
 880                 checkNotNull(soneId, "soneId must not be null");
 881                 sone.removeFriend(soneId);
 882                 boolean unfollowedSoneStillFollowed = false;
 883                 for (Sone localSone : getLocalSones()) {
 884                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 885                 }
 886                 if (!unfollowedSoneStillFollowed) {
 887                         synchronized (soneFollowingTimes) {
 888                                 soneFollowingTimes.remove(soneId);
 889                         }
 890                 }
 891                 touchConfiguration();
 892         }
 893
 894         /**
 895          * Sets the trust value of the given origin Sone for the target Sone.
 896          *
 897          * @param origin
 898          *            The origin Sone
 899          * @param target
 900          *            The target Sone
 901          * @param trustValue
 902          *            The trust value (from {@code -100} to {@code 100})
 903          */
 904         public void setTrust(Sone origin, Sone target, int trustValue) {
 905                 checkNotNull(origin, "origin must not be null");
 906                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 907                 checkNotNull(target, "target must not be null");
 908                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 909                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 910         }
 911
 912         /**
 913          * Removes any trust assignment for the given target Sone.
 914          *
 915          * @param origin
 916          *            The trust origin
 917          * @param target
 918          *            The trust target
 919          */
 920         public void removeTrust(Sone origin, Sone target) {
 921                 checkNotNull(origin, "origin must not be null");
 922                 checkNotNull(target, "target must not be null");
 923                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 924                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 925         }
 926
 927         /**
 928          * Assigns the configured positive trust value for the given target.
 929          *
 930          * @param origin
 931          *            The trust origin
 932          * @param target
 933          *            The trust target
 934          */
 935         public void trustSone(Sone origin, Sone target) {
 936                 setTrust(origin, target, preferences.getPositiveTrust());
 937         }
 938
 939         /**
 940          * Assigns the configured negative trust value for the given target.
 941          *
 942          * @param origin
 943          *            The trust origin
 944          * @param target
 945          *            The trust target
 946          */
 947         public void distrustSone(Sone origin, Sone target) {
 948                 setTrust(origin, target, preferences.getNegativeTrust());
 949         }
 950
 951         /**
 952          * Removes the trust assignment for the given target.
 953          *
 954          * @param origin
 955          *            The trust origin
 956          * @param target
 957          *            The trust target
 958          */
 959         public void untrustSone(Sone origin, Sone target) {
 960                 removeTrust(origin, target);
 961         }
 962
 963         /**
 964          * Updates the stored Sone with the given Sone.
 965          *
 966          * @param sone
 967          *            The updated Sone
 968          */
 969         public void updateSone(Sone sone) {
 970                 updateSone(sone, false);
 971         }
 972
 973         /**
 974          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 975          * {@code true}, an older Sone than the current Sone can be given to restore
 976          * an old state.
 977          *
 978          * @param sone
 979          *            The Sone to update
 980          * @param soneRescueMode
 981          *            {@code true} if the stored Sone should be updated regardless
 982          *            of the age of the given Sone
 983          */
 984         public void updateSone(Sone sone, boolean soneRescueMode) {
 985                 Optional<Sone> storedSone = getSone(sone.getId());
 986                 if (storedSone.isPresent()) {
 987                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 988                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 989                                 return;
 990                         }
 991                         /* find removed posts. */
 992                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 993                         for (Post oldPost : existingPosts) {
 994                                 if (!sone.getPosts().contains(oldPost)) {
 995                                         eventBus.post(new PostRemovedEvent(oldPost));
 996                                 }
 997                         }
 998                         /* find new posts. */
 999                         for (Post newPost : sone.getPosts()) {
1000                                 if (existingPosts.contains(newPost)) {
1001                                         continue;
1002                                 }
1003                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
1004                                         newPost.setKnown(true);
1005                                 } else if (!newPost.isKnown()) {
1006                                         eventBus.post(new NewPostFoundEvent(newPost));
1007                                 }
1008                         }
1009                         /* store posts. */
1010                         database.storePosts(sone, sone.getPosts());
1011                         if (!soneRescueMode) {
1012                                 for (PostReply reply : storedSone.get().getReplies()) {
1013                                         if (!sone.getReplies().contains(reply)) {
1014                                                 eventBus.post(new PostReplyRemovedEvent(reply));
1015                                         }
1016                                 }
1017                         }
1018                         Set<PostReply> storedReplies = storedSone.get().getReplies();
1019                         for (PostReply reply : sone.getReplies()) {
1020                                 if (storedReplies.contains(reply)) {
1021                                         continue;
1022                                 }
1023                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
1024                                         reply.setKnown(true);
1025                                 } else if (!reply.isKnown()) {
1026                                         eventBus.post(new NewPostReplyFoundEvent(reply));
1027                                 }
1028                         }
1029                         database.storePostReplies(sone, sone.getReplies());
1030                         synchronized (albums) {
1031                                 synchronized (images) {
1032                                         for (Album album : storedSone.get().getAlbums()) {
1033                                                 albums.remove(album.getId());
1034                                                 for (Image image : album.getImages()) {
1035                                                         images.remove(image.getId());
1036                                                 }
1037                                         }
1038                                         for (Album album : sone.getAlbums()) {
1039                                                 albums.put(album.getId(), album);
1040                                                 for (Image image : album.getImages()) {
1041                                                         images.put(image.getId(), image);
1042                                                 }
1043                                         }
1044                                 }
1045                         }
1046                         synchronized (sones) {
1047                                 sone.setOptions(storedSone.get().getOptions());
1048                                 sones.put(sone.getId(), sone);
1049                         }
1050                 }
1051         }
1052
1053         /**
1054          * Deletes the given Sone. This will remove the Sone from the
1055          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1056          * remove the context from its identity.
1057          *
1058          * @param sone
1059          *            The Sone to delete
1060          */
1061         public void deleteSone(Sone sone) {
1062                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1063                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1064                         return;
1065                 }
1066                 synchronized (sones) {
1067                         if (!getLocalSones().contains(sone)) {
1068                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1069                                 return;
1070                         }
1071                         sones.remove(sone.getId());
1072                         SoneInserter soneInserter = soneInserters.remove(sone);
1073                         soneInserter.stop();
1074                 }
1075                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1076                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1077                 try {
1078                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1079                 } catch (ConfigurationException ce1) {
1080                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1081                 }
1082         }
1083
1084         /**
1085          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1086          * known} before, a {@link MarkSoneKnownEvent} is fired.
1087          *
1088          * @param sone
1089          *            The Sone to mark as known
1090          */
1091         public void markSoneKnown(Sone sone) {
1092                 if (!sone.isKnown()) {
1093                         sone.setKnown(true);
1094                         synchronized (knownSones) {
1095                                 knownSones.add(sone.getId());
1096                         }
1097                         eventBus.post(new MarkSoneKnownEvent(sone));
1098                         touchConfiguration();
1099                 }
1100         }
1101
1102         /**
1103          * Loads and updates the given Sone from the configuration. If any error is
1104          * encountered, loading is aborted and the given Sone is not changed.
1105          *
1106          * @param sone
1107          *            The Sone to load and update
1108          */
1109         public void loadSone(Sone sone) {
1110                 if (!sone.isLocal()) {
1111                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1112                         return;
1113                 }
1114
1115                 /* initialize options. */
1116                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1117                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1118                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1119                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1120                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1121                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1122
1123                 /* load Sone. */
1124                 String sonePrefix = "Sone/" + sone.getId();
1125                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1126                 if (soneTime == null) {
1127                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1128                         return;
1129                 }
1130                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1131
1132                 /* load profile. */
1133                 Profile profile = new Profile(sone);
1134                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1135                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1136                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1137                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1138                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1139                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1140
1141                 /* load profile fields. */
1142                 while (true) {
1143                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1144                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1145                         if (fieldName == null) {
1146                                 break;
1147                         }
1148                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1149                         profile.addField(fieldName).setValue(fieldValue);
1150                 }
1151
1152                 /* load posts. */
1153                 Set<Post> posts = new HashSet<Post>();
1154                 while (true) {
1155                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1156                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1157                         if (postId == null) {
1158                                 break;
1159                         }
1160                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1161                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1162                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1163                         if ((postTime == 0) || (postText == null)) {
1164                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1165                                 return;
1166                         }
1167                         PostBuilder postBuilder = postBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1168                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1169                                 postBuilder.to(postRecipientId);
1170                         }
1171                         posts.add(postBuilder.build());
1172                 }
1173
1174                 /* load replies. */
1175                 Set<PostReply> replies = new HashSet<PostReply>();
1176                 while (true) {
1177                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1178                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1179                         if (replyId == null) {
1180                                 break;
1181                         }
1182                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1183                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1184                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1185                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1186                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1187                                 return;
1188                         }
1189                         PostReplyBuilder postReplyBuilder = postReplyBuilder().withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1190                         replies.add(postReplyBuilder.build());
1191                 }
1192
1193                 /* load post likes. */
1194                 Set<String> likedPostIds = new HashSet<String>();
1195                 while (true) {
1196                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1197                         if (likedPostId == null) {
1198                                 break;
1199                         }
1200                         likedPostIds.add(likedPostId);
1201                 }
1202
1203                 /* load reply likes. */
1204                 Set<String> likedReplyIds = new HashSet<String>();
1205                 while (true) {
1206                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1207                         if (likedReplyId == null) {
1208                                 break;
1209                         }
1210                         likedReplyIds.add(likedReplyId);
1211                 }
1212
1213                 /* load friends. */
1214                 Set<String> friends = new HashSet<String>();
1215                 while (true) {
1216                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1217                         if (friendId == null) {
1218                                 break;
1219                         }
1220                         friends.add(friendId);
1221                 }
1222
1223                 /* load albums. */
1224                 List<Album> topLevelAlbums = new ArrayList<Album>();
1225                 int albumCounter = 0;
1226                 while (true) {
1227                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1228                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1229                         if (albumId == null) {
1230                                 break;
1231                         }
1232                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1233                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1234                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1235                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1236                         if ((albumTitle == null) || (albumDescription == null)) {
1237                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1238                                 return;
1239                         }
1240                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1241                         if (albumParentId != null) {
1242                                 Album parentAlbum = getAlbum(albumParentId, false);
1243                                 if (parentAlbum == null) {
1244                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1245                                         return;
1246                                 }
1247                                 parentAlbum.addAlbum(album);
1248                         } else {
1249                                 if (!topLevelAlbums.contains(album)) {
1250                                         topLevelAlbums.add(album);
1251                                 }
1252                         }
1253                 }
1254
1255                 /* load images. */
1256                 int imageCounter = 0;
1257                 while (true) {
1258                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1259                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1260                         if (imageId == null) {
1261                                 break;
1262                         }
1263                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1264                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1265                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1266                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1267                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1268                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1269                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1270                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1271                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1272                                 return;
1273                         }
1274                         Album album = getAlbum(albumId, false);
1275                         if (album == null) {
1276                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1277                                 return;
1278                         }
1279                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1280                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1281                         album.addImage(image);
1282                 }
1283
1284                 /* load avatar. */
1285                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1286                 if (avatarId != null) {
1287                         profile.setAvatar(getImage(avatarId, false));
1288                 }
1289
1290                 /* load options. */
1291                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1292                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1293                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1294                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1295                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1296                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1297
1298                 /* if we’re still here, Sone was loaded successfully. */
1299                 synchronized (sone) {
1300                         sone.setTime(soneTime);
1301                         sone.setProfile(profile);
1302                         sone.setPosts(posts);
1303                         sone.setReplies(replies);
1304                         sone.setLikePostIds(likedPostIds);
1305                         sone.setLikeReplyIds(likedReplyIds);
1306                         for (String friendId : friends) {
1307                                 followSone(sone, friendId);
1308                         }
1309                         sone.setAlbums(topLevelAlbums);
1310                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1311                 }
1312                 synchronized (knownSones) {
1313                         for (String friend : friends) {
1314                                 knownSones.add(friend);
1315                         }
1316                 }
1317                 database.storePosts(sone, posts);
1318                 for (Post post : posts) {
1319                         post.setKnown(true);
1320                 }
1321                 database.storePostReplies(sone, replies);
1322                 for (PostReply reply : replies) {
1323                         reply.setKnown(true);
1324                 }
1325         }
1326
1327         /**
1328          * Creates a new post.
1329          *
1330          * @param sone
1331          *            The Sone that creates the post
1332          * @param text
1333          *            The text of the post
1334          * @return The created post
1335          */
1336         public Post createPost(Sone sone, String text) {
1337                 return createPost(sone, System.currentTimeMillis(), text);
1338         }
1339
1340         /**
1341          * Creates a new post.
1342          *
1343          * @param sone
1344          *            The Sone that creates the post
1345          * @param time
1346          *            The time of the post
1347          * @param text
1348          *            The text of the post
1349          * @return The created post
1350          */
1351         public Post createPost(Sone sone, long time, String text) {
1352                 return createPost(sone, null, time, text);
1353         }
1354
1355         /**
1356          * Creates a new post.
1357          *
1358          * @param sone
1359          *            The Sone that creates the post
1360          * @param recipient
1361          *            The recipient Sone, or {@code null} if this post does not have
1362          *            a recipient
1363          * @param text
1364          *            The text of the post
1365          * @return The created post
1366          */
1367         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1368                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1369         }
1370
1371         /**
1372          * Creates a new post.
1373          *
1374          * @param sone
1375          *            The Sone that creates the post
1376          * @param recipient
1377          *            The recipient Sone, or {@code null} if this post does not have
1378          *            a recipient
1379          * @param time
1380          *            The time of the post
1381          * @param text
1382          *            The text of the post
1383          * @return The created post
1384          */
1385         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1386                 checkNotNull(text, "text must not be null");
1387                 checkArgument(text.trim().length() > 0, "text must not be empty");
1388                 if (!sone.isLocal()) {
1389                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1390                         return null;
1391                 }
1392                 PostBuilder postBuilder = database.newPostBuilder();
1393                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1394                 if (recipient.isPresent()) {
1395                         postBuilder.to(recipient.get().getId());
1396                 }
1397                 final Post post = postBuilder.build();
1398                 database.storePost(post);
1399                 eventBus.post(new NewPostFoundEvent(post));
1400                 sone.addPost(post);
1401                 touchConfiguration();
1402                 localElementTicker.schedule(new Runnable() {
1403
1404                         /**
1405                          * {@inheritDoc}
1406                          */
1407                         @Override
1408                         public void run() {
1409                                 markPostKnown(post);
1410                         }
1411                 }, 10, TimeUnit.SECONDS);
1412                 return post;
1413         }
1414
1415         /**
1416          * Deletes the given post.
1417          *
1418          * @param post
1419          *            The post to delete
1420          */
1421         public void deletePost(Post post) {
1422                 if (!post.getSone().isLocal()) {
1423                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1424                         return;
1425                 }
1426                 database.removePost(post);
1427                 eventBus.post(new PostRemovedEvent(post));
1428                 markPostKnown(post);
1429                 touchConfiguration();
1430         }
1431
1432         /**
1433          * Marks the given post as known, if it is currently not a known post
1434          * (according to {@link Post#isKnown()}).
1435          *
1436          * @param post
1437          *            The post to mark as known
1438          */
1439         public void markPostKnown(Post post) {
1440                 post.setKnown(true);
1441                 eventBus.post(new MarkPostKnownEvent(post));
1442                 touchConfiguration();
1443                 for (PostReply reply : getReplies(post.getId())) {
1444                         markReplyKnown(reply);
1445                 }
1446         }
1447
1448         /**
1449          * Bookmarks the given post.
1450          *
1451          * @param post
1452          *            The post to bookmark
1453          */
1454         public void bookmark(Post post) {
1455                 bookmarkPost(post.getId());
1456         }
1457
1458         /**
1459          * Bookmarks the post with the given ID.
1460          *
1461          * @param id
1462          *            The ID of the post to bookmark
1463          */
1464         public void bookmarkPost(String id) {
1465                 synchronized (bookmarkedPosts) {
1466                         bookmarkedPosts.add(id);
1467                 }
1468         }
1469
1470         /**
1471          * Removes the given post from the bookmarks.
1472          *
1473          * @param post
1474          *            The post to unbookmark
1475          */
1476         public void unbookmark(Post post) {
1477                 unbookmarkPost(post.getId());
1478         }
1479
1480         /**
1481          * Removes the post with the given ID from the bookmarks.
1482          *
1483          * @param id
1484          *            The ID of the post to unbookmark
1485          */
1486         public void unbookmarkPost(String id) {
1487                 synchronized (bookmarkedPosts) {
1488                         bookmarkedPosts.remove(id);
1489                 }
1490         }
1491
1492         /**
1493          * Creates a new reply.
1494          *
1495          * @param sone
1496          *            The Sone that creates the reply
1497          * @param post
1498          *            The post that this reply refers to
1499          * @param text
1500          *            The text of the reply
1501          * @return The created reply
1502          */
1503         public PostReply createReply(Sone sone, Post post, String text) {
1504                 checkNotNull(text, "text must not be null");
1505                 checkArgument(text.trim().length() > 0, "text must not be empty");
1506                 if (!sone.isLocal()) {
1507                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1508                         return null;
1509                 }
1510                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1511                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1512                 final PostReply reply = postReplyBuilder.build();
1513                 database.storePostReply(reply);
1514                 eventBus.post(new NewPostReplyFoundEvent(reply));
1515                 sone.addReply(reply);
1516                 touchConfiguration();
1517                 localElementTicker.schedule(new Runnable() {
1518
1519                         /**
1520                          * {@inheritDoc}
1521                          */
1522                         @Override
1523                         public void run() {
1524                                 markReplyKnown(reply);
1525                         }
1526                 }, 10, TimeUnit.SECONDS);
1527                 return reply;
1528         }
1529
1530         /**
1531          * Deletes the given reply.
1532          *
1533          * @param reply
1534          *            The reply to delete
1535          */
1536         public void deleteReply(PostReply reply) {
1537                 Sone sone = reply.getSone();
1538                 if (!sone.isLocal()) {
1539                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1540                         return;
1541                 }
1542                 database.removePostReply(reply);
1543                 markReplyKnown(reply);
1544                 sone.removeReply(reply);
1545                 touchConfiguration();
1546         }
1547
1548         /**
1549          * Marks the given reply as known, if it is currently not a known reply
1550          * (according to {@link Reply#isKnown()}).
1551          *
1552          * @param reply
1553          *            The reply to mark as known
1554          */
1555         public void markReplyKnown(PostReply reply) {
1556                 boolean previouslyKnown = reply.isKnown();
1557                 reply.setKnown(true);
1558                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1559                 if (!previouslyKnown) {
1560                         touchConfiguration();
1561                 }
1562         }
1563
1564         /**
1565          * Creates a new top-level album for the given Sone.
1566          *
1567          * @param sone
1568          *            The Sone to create the album for
1569          * @return The new album
1570          */
1571         public Album createAlbum(Sone sone) {
1572                 return createAlbum(sone, null);
1573         }
1574
1575         /**
1576          * Creates a new album for the given Sone.
1577          *
1578          * @param sone
1579          *            The Sone to create the album for
1580          * @param parent
1581          *            The parent of the album (may be {@code null} to create a
1582          *            top-level album)
1583          * @return The new album
1584          */
1585         public Album createAlbum(Sone sone, Album parent) {
1586                 Album album = new Album();
1587                 synchronized (albums) {
1588                         albums.put(album.getId(), album);
1589                 }
1590                 album.setSone(sone);
1591                 if (parent != null) {
1592                         parent.addAlbum(album);
1593                 } else {
1594                         sone.addAlbum(album);
1595                 }
1596                 return album;
1597         }
1598
1599         /**
1600          * Deletes the given album. The owner of the album has to be a local Sone,
1601          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1602          *
1603          * @param album
1604          *            The album to remove
1605          */
1606         public void deleteAlbum(Album album) {
1607                 checkNotNull(album, "album must not be null");
1608                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1609                 if (!album.isEmpty()) {
1610                         return;
1611                 }
1612                 if (album.getParent() == null) {
1613                         album.getSone().removeAlbum(album);
1614                 } else {
1615                         album.getParent().removeAlbum(album);
1616                 }
1617                 synchronized (albums) {
1618                         albums.remove(album.getId());
1619                 }
1620                 touchConfiguration();
1621         }
1622
1623         /**
1624          * Creates a new image.
1625          *
1626          * @param sone
1627          *            The Sone creating the image
1628          * @param album
1629          *            The album the image will be inserted into
1630          * @param temporaryImage
1631          *            The temporary image to create the image from
1632          * @return The newly created image
1633          */
1634         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1635                 checkNotNull(sone, "sone must not be null");
1636                 checkNotNull(album, "album must not be null");
1637                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1638                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1639                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1640                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1641                 album.addImage(image);
1642                 synchronized (images) {
1643                         images.put(image.getId(), image);
1644                 }
1645                 imageInserter.insertImage(temporaryImage, image);
1646                 return image;
1647         }
1648
1649         /**
1650          * Deletes the given image. This method will also delete a matching
1651          * temporary image.
1652          *
1653          * @see #deleteTemporaryImage(TemporaryImage)
1654          * @param image
1655          *            The image to delete
1656          */
1657         public void deleteImage(Image image) {
1658                 checkNotNull(image, "image must not be null");
1659                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1660                 deleteTemporaryImage(image.getId());
1661                 image.getAlbum().removeImage(image);
1662                 synchronized (images) {
1663                         images.remove(image.getId());
1664                 }
1665                 touchConfiguration();
1666         }
1667
1668         /**
1669          * Creates a new temporary image.
1670          *
1671          * @param mimeType
1672          *            The MIME type of the temporary image
1673          * @param imageData
1674          *            The encoded data of the image
1675          * @return The temporary image
1676          */
1677         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1678                 TemporaryImage temporaryImage = new TemporaryImage();
1679                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1680                 synchronized (temporaryImages) {
1681                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1682                 }
1683                 return temporaryImage;
1684         }
1685
1686         /**
1687          * Deletes the given temporary image.
1688          *
1689          * @param temporaryImage
1690          *            The temporary image to delete
1691          */
1692         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1693                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1694                 deleteTemporaryImage(temporaryImage.getId());
1695         }
1696
1697         /**
1698          * Deletes the temporary image with the given ID.
1699          *
1700          * @param imageId
1701          *            The ID of the temporary image to delete
1702          */
1703         public void deleteTemporaryImage(String imageId) {
1704                 checkNotNull(imageId, "imageId must not be null");
1705                 synchronized (temporaryImages) {
1706                         temporaryImages.remove(imageId);
1707                 }
1708                 Image image = getImage(imageId, false);
1709                 if (image != null) {
1710                         imageInserter.cancelImageInsert(image);
1711                 }
1712         }
1713
1714         /**
1715          * Notifies the core that the configuration, either of the core or of a
1716          * single local Sone, has changed, and that the configuration should be
1717          * saved.
1718          */
1719         public void touchConfiguration() {
1720                 lastConfigurationUpdate = System.currentTimeMillis();
1721         }
1722
1723         //
1724         // SERVICE METHODS
1725         //
1726
1727         /**
1728          * Starts the core.
1729          */
1730         @Override
1731         public void serviceStart() {
1732                 loadConfiguration();
1733                 updateChecker.start();
1734                 identityManager.start();
1735                 webOfTrustUpdater.init();
1736                 webOfTrustUpdater.start();
1737                 database.start();
1738         }
1739
1740         /**
1741          * {@inheritDoc}
1742          */
1743         @Override
1744         public void serviceRun() {
1745                 long lastSaved = System.currentTimeMillis();
1746                 while (!shouldStop()) {
1747                         sleep(1000);
1748                         long now = System.currentTimeMillis();
1749                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1750                                 for (Sone localSone : getLocalSones()) {
1751                                         saveSone(localSone);
1752                                 }
1753                                 saveConfiguration();
1754                                 lastSaved = now;
1755                         }
1756                 }
1757         }
1758
1759         /**
1760          * Stops the core.
1761          */
1762         @Override
1763         public void serviceStop() {
1764                 localElementTicker.shutdownNow();
1765                 synchronized (sones) {
1766                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1767                                 soneInserter.getValue().stop();
1768                                 saveSone(soneInserter.getKey());
1769                         }
1770                 }
1771                 saveConfiguration();
1772                 database.stop();
1773                 webOfTrustUpdater.stop();
1774                 updateChecker.stop();
1775                 soneDownloader.stop();
1776                 soneDownloaders.shutdown();
1777                 identityManager.stop();
1778         }
1779
1780         //
1781         // PRIVATE METHODS
1782         //
1783
1784         /**
1785          * Saves the given Sone. This will persist all local settings for the given
1786          * Sone, such as the friends list and similar, private options.
1787          *
1788          * @param sone
1789          *            The Sone to save
1790          */
1791         private synchronized void saveSone(Sone sone) {
1792                 if (!sone.isLocal()) {
1793                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1794                         return;
1795                 }
1796                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1797                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1798                         return;
1799                 }
1800
1801                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1802                 try {
1803                         /* save Sone into configuration. */
1804                         String sonePrefix = "Sone/" + sone.getId();
1805                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1806                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1807
1808                         /* save profile. */
1809                         Profile profile = sone.getProfile();
1810                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1811                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1812                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1813                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1814                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1815                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1816                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1817
1818                         /* save profile fields. */
1819                         int fieldCounter = 0;
1820                         for (Field profileField : profile.getFields()) {
1821                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1822                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1823                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1824                         }
1825                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1826
1827                         /* save posts. */
1828                         int postCounter = 0;
1829                         for (Post post : sone.getPosts()) {
1830                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1831                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1832                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1833                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1834                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1835                         }
1836                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1837
1838                         /* save replies. */
1839                         int replyCounter = 0;
1840                         for (PostReply reply : sone.getReplies()) {
1841                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1842                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1843                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1844                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1845                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1846                         }
1847                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1848
1849                         /* save post likes. */
1850                         int postLikeCounter = 0;
1851                         for (String postId : sone.getLikedPostIds()) {
1852                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1853                         }
1854                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1855
1856                         /* save reply likes. */
1857                         int replyLikeCounter = 0;
1858                         for (String replyId : sone.getLikedReplyIds()) {
1859                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1860                         }
1861                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1862
1863                         /* save friends. */
1864                         int friendCounter = 0;
1865                         for (String friendId : sone.getFriends()) {
1866                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1867                         }
1868                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1869
1870                         /* save albums. first, collect in a flat structure, top-level first. */
1871                         List<Album> albums = FluentIterable.from(sone.getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1872
1873                         int albumCounter = 0;
1874                         for (Album album : albums) {
1875                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1876                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1877                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1878                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1879                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1880                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1881                         }
1882                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1883
1884                         /* save images. */
1885                         int imageCounter = 0;
1886                         for (Album album : albums) {
1887                                 for (Image image : album.getImages()) {
1888                                         if (!image.isInserted()) {
1889                                                 continue;
1890                                         }
1891                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1892                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1893                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1894                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1895                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1896                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1897                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1898                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1899                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1900                                 }
1901                         }
1902                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1903
1904                         /* save options. */
1905                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1906                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1907                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1908                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1909                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1910                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
1911
1912                         configuration.save();
1913
1914                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1915
1916                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1917                 } catch (ConfigurationException ce1) {
1918                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1919                 }
1920         }
1921
1922         /**
1923          * Saves the current options.
1924          */
1925         private void saveConfiguration() {
1926                 synchronized (configuration) {
1927                         if (storingConfiguration) {
1928                                 logger.log(Level.FINE, "Already storing configuration…");
1929                                 return;
1930                         }
1931                         storingConfiguration = true;
1932                 }
1933
1934                 /* store the options first. */
1935                 try {
1936                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1937                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1938                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1939                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1940                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1941                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1942                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1943                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1944                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1945                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1946                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1947                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1948
1949                         /* save known Sones. */
1950                         int soneCounter = 0;
1951                         synchronized (knownSones) {
1952                                 for (String knownSoneId : knownSones) {
1953                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1954                                 }
1955                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1956                         }
1957
1958                         /* save Sone following times. */
1959                         soneCounter = 0;
1960                         synchronized (soneFollowingTimes) {
1961                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1962                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1963                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1964                                         ++soneCounter;
1965                                 }
1966                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1967                         }
1968
1969                         /* save known posts. */
1970                         database.save();
1971
1972                         /* save bookmarked posts. */
1973                         int bookmarkedPostCounter = 0;
1974                         synchronized (bookmarkedPosts) {
1975                                 for (String bookmarkedPostId : bookmarkedPosts) {
1976                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1977                                 }
1978                         }
1979                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1980
1981                         /* now save it. */
1982                         configuration.save();
1983
1984                 } catch (ConfigurationException ce1) {
1985                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1986                 } catch (DatabaseException de1) {
1987                         logger.log(Level.SEVERE, "Could not save database!", de1);
1988                 } finally {
1989                         synchronized (configuration) {
1990                                 storingConfiguration = false;
1991                         }
1992                 }
1993         }
1994
1995         /**
1996          * Loads the configuration.
1997          */
1998         private void loadConfiguration() {
1999                 /* create options. */
2000                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2001
2002                         @Override
2003                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2004                                 SoneInserter.setInsertionDelay(newValue);
2005                         }
2006
2007                 }));
2008                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2009                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2010                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2011                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2012                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2013                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
2014                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
2015                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2016                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2017
2018                         @Override
2019                         @SuppressWarnings("synthetic-access")
2020                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2021                                 fcpInterface.setActive(newValue);
2022                         }
2023                 }));
2024                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2025
2026                         @Override
2027                         @SuppressWarnings("synthetic-access")
2028                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2029                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2030                         }
2031
2032                 }));
2033
2034                 loadConfigurationValue("InsertionDelay");
2035                 loadConfigurationValue("PostsPerPage");
2036                 loadConfigurationValue("ImagesPerPage");
2037                 loadConfigurationValue("CharactersPerPost");
2038                 loadConfigurationValue("PostCutOffLength");
2039                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2040                 loadConfigurationValue("PositiveTrust");
2041                 loadConfigurationValue("NegativeTrust");
2042                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2043                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2044                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2045
2046                 /* load known Sones. */
2047                 int soneCounter = 0;
2048                 while (true) {
2049                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2050                         if (knownSoneId == null) {
2051                                 break;
2052                         }
2053                         synchronized (knownSones) {
2054                                 knownSones.add(knownSoneId);
2055                         }
2056                 }
2057
2058                 /* load Sone following times. */
2059                 soneCounter = 0;
2060                 while (true) {
2061                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2062                         if (soneId == null) {
2063                                 break;
2064                         }
2065                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2066                         synchronized (soneFollowingTimes) {
2067                                 soneFollowingTimes.put(soneId, time);
2068                         }
2069                         ++soneCounter;
2070                 }
2071
2072                 /* load bookmarked posts. */
2073                 int bookmarkedPostCounter = 0;
2074                 while (true) {
2075                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2076                         if (bookmarkedPostId == null) {
2077                                 break;
2078                         }
2079                         synchronized (bookmarkedPosts) {
2080                                 bookmarkedPosts.add(bookmarkedPostId);
2081                         }
2082                 }
2083
2084         }
2085
2086         /**
2087          * Loads an {@link Integer} configuration value for the option with the
2088          * given name, logging validation failures.
2089          *
2090          * @param optionName
2091          *            The name of the option to load
2092          */
2093         private void loadConfigurationValue(String optionName) {
2094                 try {
2095                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2096                 } catch (IllegalArgumentException iae1) {
2097                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2098                 }
2099         }
2100
2101         /**
2102          * Notifies the core that a new {@link OwnIdentity} was added.
2103          *
2104          * @param ownIdentityAddedEvent
2105          *            The event
2106          */
2107         @Subscribe
2108         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2109                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2110                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2111                 if (ownIdentity.hasContext("Sone")) {
2112                         addLocalSone(ownIdentity);
2113                 }
2114         }
2115
2116         /**
2117          * Notifies the core that an {@link OwnIdentity} was removed.
2118          *
2119          * @param ownIdentityRemovedEvent
2120          *            The event
2121          */
2122         @Subscribe
2123         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2124                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2125                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2126                 trustedIdentities.remove(ownIdentity);
2127         }
2128
2129         /**
2130          * Notifies the core that a new {@link Identity} was added.
2131          *
2132          * @param identityAddedEvent
2133          *            The event
2134          */
2135         @Subscribe
2136         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2137                 Identity identity = identityAddedEvent.identity();
2138                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2139                 trustedIdentities.get(identityAddedEvent.ownIdentity()).add(identity);
2140                 addRemoteSone(identity);
2141         }
2142
2143         /**
2144          * Notifies the core that an {@link Identity} was updated.
2145          *
2146          * @param identityUpdatedEvent
2147          *            The event
2148          */
2149         @Subscribe
2150         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2151                 final Identity identity = identityUpdatedEvent.identity();
2152                 soneDownloaders.execute(new Runnable() {
2153
2154                         @Override
2155                         @SuppressWarnings("synthetic-access")
2156                         public void run() {
2157                                 Sone sone = getRemoteSone(identity.getId(), false);
2158                                 sone.setIdentity(identity);
2159                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2160                                 soneDownloader.addSone(sone);
2161                                 soneDownloader.fetchSone(sone);
2162                         }
2163                 });
2164         }
2165
2166         /**
2167          * Notifies the core that an {@link Identity} was removed.
2168          *
2169          * @param identityRemovedEvent
2170          *            The event
2171          */
2172         @Subscribe
2173         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2174                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2175                 Identity identity = identityRemovedEvent.identity();
2176                 trustedIdentities.get(ownIdentity).remove(identity);
2177                 boolean foundIdentity = false;
2178                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2179                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2180                                 continue;
2181                         }
2182                         if (trustedIdentity.getValue().contains(identity)) {
2183                                 foundIdentity = true;
2184                         }
2185                 }
2186                 if (foundIdentity) {
2187                         /* some local identity still trusts this identity, don’t remove. */
2188                         return;
2189                 }
2190                 Optional<Sone> sone = getSone(identity.getId());
2191                 if (!sone.isPresent()) {
2192                         /* TODO - we don’t have the Sone anymore. should this happen? */
2193                         return;
2194                 }
2195                 database.removePosts(sone.get());
2196                 for (Post post : sone.get().getPosts()) {
2197                         eventBus.post(new PostRemovedEvent(post));
2198                 }
2199                 database.removePostReplies(sone.get());
2200                 for (PostReply reply : sone.get().getReplies()) {
2201                         eventBus.post(new PostReplyRemovedEvent(reply));
2202                 }
2203                 synchronized (sones) {
2204                         sones.remove(identity.getId());
2205                 }
2206                 eventBus.post(new SoneRemovedEvent(sone.get()));
2207         }
2208
2209         /**
2210          * Deletes the temporary image.
2211          *
2212          * @param imageInsertFinishedEvent
2213          *            The event
2214          */
2215         @Subscribe
2216         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2217                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2218                 imageInsertFinishedEvent.image().setKey(imageInsertFinishedEvent.resultingUri().toString());
2219                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2220                 touchConfiguration();
2221         }
2222
2223 }