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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import static com.google.common.base.Preconditions.checkArgument;
  21 import static com.google.common.base.Preconditions.checkNotNull;
  22
  23 import java.net.MalformedURLException;
  24 import java.util.ArrayList;
  25 import java.util.Collection;
  26 import java.util.HashMap;
  27 import java.util.HashSet;
  28 import java.util.List;
  29 import java.util.Map;
  30 import java.util.Map.Entry;
  31 import java.util.Set;
  32 import java.util.concurrent.ExecutorService;
  33 import java.util.concurrent.Executors;
  34 import java.util.concurrent.ScheduledExecutorService;
  35 import java.util.concurrent.TimeUnit;
  36 import java.util.logging.Level;
  37 import java.util.logging.Logger;
  38
  39 import net.pterodactylus.sone.core.Options.DefaultOption;
  40 import net.pterodactylus.sone.core.Options.Option;
  41 import net.pterodactylus.sone.core.Options.OptionWatcher;
  42 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  43 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  46 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  47 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  49 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  50 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  51 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  52 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  53 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  54 import net.pterodactylus.sone.data.Album;
  55 import net.pterodactylus.sone.data.Client;
  56 import net.pterodactylus.sone.data.Image;
  57 import net.pterodactylus.sone.data.Post;
  58 import net.pterodactylus.sone.data.PostReply;
  59 import net.pterodactylus.sone.data.Profile;
  60 import net.pterodactylus.sone.data.Profile.Field;
  61 import net.pterodactylus.sone.data.Reply;
  62 import net.pterodactylus.sone.data.Sone;
  63 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  64 import net.pterodactylus.sone.data.Sone.SoneStatus;
  65 import net.pterodactylus.sone.data.TemporaryImage;
  66 import net.pterodactylus.sone.database.Database;
  67 import net.pterodactylus.sone.database.DatabaseException;
  68 import net.pterodactylus.sone.database.PostBuilder;
  69 import net.pterodactylus.sone.database.PostProvider;
  70 import net.pterodactylus.sone.database.PostReplyBuilder;
  71 import net.pterodactylus.sone.database.PostReplyProvider;
  72 import net.pterodactylus.sone.database.SoneProvider;
  73 import net.pterodactylus.sone.fcp.FcpInterface;
  74 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  75 import net.pterodactylus.sone.freenet.wot.Identity;
  76 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  77 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  78 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  83 import net.pterodactylus.sone.main.SonePlugin;
  84 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  85 import net.pterodactylus.util.config.Configuration;
  86 import net.pterodactylus.util.config.ConfigurationException;
  87 import net.pterodactylus.util.logging.Logging;
  88 import net.pterodactylus.util.number.Numbers;
  89 import net.pterodactylus.util.service.AbstractService;
  90 import net.pterodactylus.util.thread.NamedThreadFactory;
  91
  92 import com.google.common.base.Optional;
  93 import com.google.common.base.Predicate;
  94 import com.google.common.base.Predicates;
  95 import com.google.common.collect.Collections2;
  96 import com.google.common.collect.FluentIterable;
  97 import com.google.common.collect.HashMultimap;
  98 import com.google.common.collect.ImmutableSet;
  99 import com.google.common.collect.Multimap;
 100 import com.google.common.collect.Multimaps;
 101 import com.google.common.eventbus.EventBus;
 102 import com.google.common.eventbus.Subscribe;
 103 import com.google.inject.Inject;
 104
 105 import freenet.keys.FreenetURI;
 106
 107 /**
 108  * The Sone core.
 109  *
 110  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 111  */
 112 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 113
 114         /** The logger. */
 115         private static final Logger logger = Logging.getLogger(Core.class);
 116
 117         /** The start time. */
 118         private final long startupTime = System.currentTimeMillis();
 119
 120         /** The options. */
 121         private final Options options = new Options();
 122
 123         /** The preferences. */
 124         private final Preferences preferences = new Preferences(options);
 125
 126         /** The event bus. */
 127         private final EventBus eventBus;
 128
 129         /** The configuration. */
 130         private Configuration configuration;
 131
 132         /** Whether we’re currently saving the configuration. */
 133         private boolean storingConfiguration = false;
 134
 135         /** The identity manager. */
 136         private final IdentityManager identityManager;
 137
 138         /** Interface to freenet. */
 139         private final FreenetInterface freenetInterface;
 140
 141         /** The Sone downloader. */
 142         private final SoneDownloader soneDownloader;
 143
 144         /** The image inserter. */
 145         private final ImageInserter imageInserter;
 146
 147         /** Sone downloader thread-pool. */
 148         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 149
 150         /** The update checker. */
 151         private final UpdateChecker updateChecker;
 152
 153         /** The trust updater. */
 154         private final WebOfTrustUpdater webOfTrustUpdater;
 155
 156         /** The FCP interface. */
 157         private volatile FcpInterface fcpInterface;
 158
 159         /** The times Sones were followed. */
 160         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 161
 162         /** Locked local Sones. */
 163         /* synchronize on itself. */
 164         private final Set<Sone> lockedSones = new HashSet<Sone>();
 165
 166         /** Sone inserters. */
 167         /* synchronize access on this on sones. */
 168         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 169
 170         /** Sone rescuers. */
 171         /* synchronize access on this on sones. */
 172         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 173
 174         /** All Sones. */
 175         /* synchronize access on this on itself. */
 176         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 177
 178         /** All known Sones. */
 179         private final Set<String> knownSones = new HashSet<String>();
 180
 181         /** The post database. */
 182         private final Database database;
 183
 184         /** All bookmarked posts. */
 185         /* synchronize access on itself. */
 186         private final Set<String> bookmarkedPosts = new HashSet<String>();
 187
 188         /** Trusted identities, sorted by own identities. */
 189         private final Multimap<OwnIdentity, Identity> trustedIdentities = Multimaps.synchronizedSetMultimap(HashMultimap.<OwnIdentity, Identity>create());
 190
 191         /** All known albums. */
 192         private final Map<String, Album> albums = new HashMap<String, Album>();
 193
 194         /** All known images. */
 195         private final Map<String, Image> images = new HashMap<String, Image>();
 196
 197         /** All temporary images. */
 198         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 199
 200         /** Ticker for threads that mark own elements as known. */
 201         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 202
 203         /** The time the configuration was last touched. */
 204         private volatile long lastConfigurationUpdate;
 205
 206         /**
 207          * Creates a new core.
 208          *
 209          * @param configuration
 210          *            The configuration of the core
 211          * @param freenetInterface
 212          *            The freenet interface
 213          * @param identityManager
 214          *            The identity manager
 215          * @param webOfTrustUpdater
 216          *            The WebOfTrust updater
 217          * @param eventBus
 218          *            The event bus
 219          * @param database
 220          *            The database
 221          */
 222         @Inject
 223         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, Database database) {
 224                 super("Sone Core");
 225                 this.configuration = configuration;
 226                 this.freenetInterface = freenetInterface;
 227                 this.identityManager = identityManager;
 228                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 229                 this.imageInserter = new ImageInserter(freenetInterface);
 230                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 231                 this.webOfTrustUpdater = webOfTrustUpdater;
 232                 this.eventBus = eventBus;
 233                 this.database = database;
 234         }
 235
 236         //
 237         // ACCESSORS
 238         //
 239
 240         /**
 241          * Returns the time Sone was started.
 242          *
 243          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 244          */
 245         public long getStartupTime() {
 246                 return startupTime;
 247         }
 248
 249         /**
 250          * Sets the configuration to use. This will automatically save the current
 251          * configuration to the given configuration.
 252          *
 253          * @param configuration
 254          *            The new configuration to use
 255          */
 256         public void setConfiguration(Configuration configuration) {
 257                 this.configuration = configuration;
 258                 touchConfiguration();
 259         }
 260
 261         /**
 262          * Returns the options used by the core.
 263          *
 264          * @return The options of the core
 265          */
 266         public Preferences getPreferences() {
 267                 return preferences;
 268         }
 269
 270         /**
 271          * Returns the identity manager used by the core.
 272          *
 273          * @return The identity manager
 274          */
 275         public IdentityManager getIdentityManager() {
 276                 return identityManager;
 277         }
 278
 279         /**
 280          * Returns the update checker.
 281          *
 282          * @return The update checker
 283          */
 284         public UpdateChecker getUpdateChecker() {
 285                 return updateChecker;
 286         }
 287
 288         /**
 289          * Sets the FCP interface to use.
 290          *
 291          * @param fcpInterface
 292          *            The FCP interface to use
 293          */
 294         public void setFcpInterface(FcpInterface fcpInterface) {
 295                 this.fcpInterface = fcpInterface;
 296         }
 297
 298         /**
 299          * Returns the Sone rescuer for the given local Sone.
 300          *
 301          * @param sone
 302          *            The local Sone to get the rescuer for
 303          * @return The Sone rescuer for the given Sone
 304          */
 305         public SoneRescuer getSoneRescuer(Sone sone) {
 306                 checkNotNull(sone, "sone must not be null");
 307                 checkArgument(sone.isLocal(), "sone must be local");
 308                 synchronized (sones) {
 309                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 310                         if (soneRescuer == null) {
 311                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 312                                 soneRescuers.put(sone, soneRescuer);
 313                                 soneRescuer.start();
 314                         }
 315                         return soneRescuer;
 316                 }
 317         }
 318
 319         /**
 320          * Returns whether the given Sone is currently locked.
 321          *
 322          * @param sone
 323          *            The sone to check
 324          * @return {@code true} if the Sone is locked, {@code false} if it is not
 325          */
 326         public boolean isLocked(Sone sone) {
 327                 synchronized (lockedSones) {
 328                         return lockedSones.contains(sone);
 329                 }
 330         }
 331
 332         /**
 333          * {@inheritDocs}
 334          */
 335         @Override
 336         public Collection<Sone> getSones() {
 337                 synchronized (sones) {
 338                         return Collections.unmodifiableCollection(sones.values());
 339                 }
 340         }
 341
 342         /**
 343          * Returns the Sone with the given ID, regardless whether it’s local or
 344          * remote.
 345          *
 346          * @param id
 347          *            The ID of the Sone to get
 348          * @return The Sone with the given ID, or {@code null} if there is no such
 349          *         Sone
 350          */
 351         @Override
 352         public Optional<Sone> getSone(String id) {
 353                 synchronized (sones) {
 354                         return Optional.fromNullable(sones.get(id));
 355                 }
 356         }
 357
 358         /**
 359          * {@inheritDocs}
 360          */
 361         @Override
 362         public Collection<Sone> getLocalSones() {
 363                 synchronized (sones) {
 364                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 365
 366                                 @Override
 367                                 public boolean apply(Sone sone) {
 368                                         return sone.isLocal();
 369                                 }
 370                         });
 371                 }
 372         }
 373
 374         /**
 375          * Returns the local Sone with the given ID, optionally creating a new Sone.
 376          *
 377          * @param id
 378          *            The ID of the Sone
 379          * @param create
 380          *            {@code true} to create a new Sone if none exists,
 381          *            {@code false} to return null if none exists
 382          * @return The Sone with the given ID, or {@code null}
 383          */
 384         public Sone getLocalSone(String id, boolean create) {
 385                 synchronized (sones) {
 386                         Sone sone = sones.get(id);
 387                         if ((sone == null) && create) {
 388                                 sone = new Sone(id, true);
 389                                 sones.put(id, sone);
 390                         }
 391                         if ((sone != null) && !sone.isLocal()) {
 392                                 sone = new Sone(id, true);
 393                                 sones.put(id, sone);
 394                         }
 395                         return sone;
 396                 }
 397         }
 398
 399         /**
 400          * {@inheritDocs}
 401          */
 402         @Override
 403         public Collection<Sone> getRemoteSones() {
 404                 synchronized (sones) {
 405                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 406
 407                                 @Override
 408                                 public boolean apply(Sone sone) {
 409                                         return !sone.isLocal();
 410                                 }
 411                         });
 412                 }
 413         }
 414
 415         /**
 416          * Returns the remote Sone with the given ID.
 417          *
 418          * @param id
 419          *            The ID of the remote Sone to get
 420          * @param create
 421          *            {@code true} to always create a Sone, {@code false} to return
 422          *            {@code null} if no Sone with the given ID exists
 423          * @return The Sone with the given ID
 424          */
 425         public Sone getRemoteSone(String id, boolean create) {
 426                 synchronized (sones) {
 427                         Sone sone = sones.get(id);
 428                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 429                                 sone = new Sone(id, false);
 430                                 sones.put(id, sone);
 431                         }
 432                         return sone;
 433                 }
 434         }
 435
 436         /**
 437          * Returns whether the given Sone has been modified.
 438          *
 439          * @param sone
 440          *            The Sone to check for modifications
 441          * @return {@code true} if a modification has been detected in the Sone,
 442          *         {@code false} otherwise
 443          */
 444         public boolean isModifiedSone(Sone sone) {
 445                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 446         }
 447
 448         /**
 449          * Returns the time when the given was first followed by any local Sone.
 450          *
 451          * @param sone
 452          *            The Sone to get the time for
 453          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 454          *         been followed, or {@link Long#MAX_VALUE}
 455          */
 456         public long getSoneFollowingTime(Sone sone) {
 457                 synchronized (soneFollowingTimes) {
 458                         return Optional.fromNullable(soneFollowingTimes.get(sone.getId())).or(Long.MAX_VALUE);
 459                 }
 460         }
 461
 462         /**
 463          * Returns whether the target Sone is trusted by the origin Sone.
 464          *
 465          * @param origin
 466          *            The origin Sone
 467          * @param target
 468          *            The target Sone
 469          * @return {@code true} if the target Sone is trusted by the origin Sone
 470          */
 471         public boolean isSoneTrusted(Sone origin, Sone target) {
 472                 checkNotNull(origin, "origin must not be null");
 473                 checkNotNull(target, "target must not be null");
 474                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 475                 return trustedIdentities.containsEntry(origin.getIdentity(), target.getIdentity());
 476         }
 477
 478         /**
 479          * Returns a post builder.
 480          *
 481          * @return A new post builder
 482          */
 483         public PostBuilder postBuilder() {
 484                 return database.newPostBuilder();
 485         }
 486
 487         /**
 488          * {@inheritDoc}
 489          */
 490         @Override
 491         public Optional<Post> getPost(String postId) {
 492                 return database.getPost(postId);
 493         }
 494
 495         /**
 496          * {@inheritDocs}
 497          */
 498         @Override
 499         public Collection<Post> getPosts(String soneId) {
 500                 return database.getPosts(soneId);
 501         }
 502
 503         /**
 504          * {@inheritDoc}
 505          */
 506         @Override
 507         public Collection<Post> getDirectedPosts(final String recipientId) {
 508                 checkNotNull(recipientId, "recipient must not be null");
 509                 return database.getDirectedPosts(recipientId);
 510         }
 511
 512         /**
 513          * Returns a post reply builder.
 514          *
 515          * @return A new post reply builder
 516          */
 517         public PostReplyBuilder postReplyBuilder() {
 518                 return database.newPostReplyBuilder();
 519         }
 520
 521         /**
 522          * {@inheritDoc}
 523          */
 524         @Override
 525         public Optional<PostReply> getPostReply(String replyId) {
 526                 return database.getPostReply(replyId);
 527         }
 528
 529         /**
 530          * {@inheritDoc}
 531          */
 532         @Override
 533         public List<PostReply> getReplies(final String postId) {
 534                 return database.getReplies(postId);
 535         }
 536
 537         /**
 538          * Returns all Sones that have liked the given post.
 539          *
 540          * @param post
 541          *            The post to get the liking Sones for
 542          * @return The Sones that like the given post
 543          */
 544         public Set<Sone> getLikes(Post post) {
 545                 Set<Sone> sones = new HashSet<Sone>();
 546                 for (Sone sone : getSones()) {
 547                         if (sone.getLikedPostIds().contains(post.getId())) {
 548                                 sones.add(sone);
 549                         }
 550                 }
 551                 return sones;
 552         }
 553
 554         /**
 555          * Returns all Sones that have liked the given reply.
 556          *
 557          * @param reply
 558          *            The reply to get the liking Sones for
 559          * @return The Sones that like the given reply
 560          */
 561         public Set<Sone> getLikes(PostReply reply) {
 562                 Set<Sone> sones = new HashSet<Sone>();
 563                 for (Sone sone : getSones()) {
 564                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 565                                 sones.add(sone);
 566                         }
 567                 }
 568                 return sones;
 569         }
 570
 571         /**
 572          * Returns whether the given post is bookmarked.
 573          *
 574          * @param post
 575          *            The post to check
 576          * @return {@code true} if the given post is bookmarked, {@code false}
 577          *         otherwise
 578          */
 579         public boolean isBookmarked(Post post) {
 580                 return isPostBookmarked(post.getId());
 581         }
 582
 583         /**
 584          * Returns whether the post with the given ID is bookmarked.
 585          *
 586          * @param id
 587          *            The ID of the post to check
 588          * @return {@code true} if the post with the given ID is bookmarked,
 589          *         {@code false} otherwise
 590          */
 591         public boolean isPostBookmarked(String id) {
 592                 synchronized (bookmarkedPosts) {
 593                         return bookmarkedPosts.contains(id);
 594                 }
 595         }
 596
 597         /**
 598          * Returns all currently known bookmarked posts.
 599          *
 600          * @return All bookmarked posts
 601          */
 602         public Set<Post> getBookmarkedPosts() {
 603                 Set<Post> posts = new HashSet<Post>();
 604                 synchronized (bookmarkedPosts) {
 605                         for (String bookmarkedPostId : bookmarkedPosts) {
 606                                 Optional<Post> post = getPost(bookmarkedPostId);
 607                                 if (!post.isPresent()) {
 608                                         posts.add(post.get());
 609                                 }
 610                         }
 611                 }
 612                 return posts;
 613         }
 614
 615         /**
 616          * Returns the album with the given ID, creating a new album if no album
 617          * with the given ID can be found.
 618          *
 619          * @param albumId
 620          *            The ID of the album
 621          * @return The album with the given ID
 622          */
 623         public Album getAlbum(String albumId) {
 624                 return getAlbum(albumId, true);
 625         }
 626
 627         /**
 628          * Returns the album with the given ID, optionally creating a new album if
 629          * an album with the given ID can not be found.
 630          *
 631          * @param albumId
 632          *            The ID of the album
 633          * @param create
 634          *            {@code true} to create a new album if none exists for the
 635          *            given ID
 636          * @return The album with the given ID, or {@code null} if no album with the
 637          *         given ID exists and {@code create} is {@code false}
 638          */
 639         public Album getAlbum(String albumId, boolean create) {
 640                 synchronized (albums) {
 641                         Album album = albums.get(albumId);
 642                         if (create && (album == null)) {
 643                                 album = new Album(albumId);
 644                                 albums.put(albumId, album);
 645                         }
 646                         return album;
 647                 }
 648         }
 649
 650         /**
 651          * Returns the image with the given ID, creating it if necessary.
 652          *
 653          * @param imageId
 654          *            The ID of the image
 655          * @return The image with the given ID
 656          */
 657         public Image getImage(String imageId) {
 658                 return getImage(imageId, true);
 659         }
 660
 661         /**
 662          * Returns the image with the given ID, optionally creating it if it does
 663          * not exist.
 664          *
 665          * @param imageId
 666          *            The ID of the image
 667          * @param create
 668          *            {@code true} to create an image if none exists with the given
 669          *            ID
 670          * @return The image with the given ID, or {@code null} if none exists and
 671          *         none was created
 672          */
 673         public Image getImage(String imageId, boolean create) {
 674                 synchronized (images) {
 675                         Image image = images.get(imageId);
 676                         if (create && (image == null)) {
 677                                 image = new Image(imageId);
 678                                 images.put(imageId, image);
 679                         }
 680                         return image;
 681                 }
 682         }
 683
 684         /**
 685          * Returns the temporary image with the given ID.
 686          *
 687          * @param imageId
 688          *            The ID of the temporary image
 689          * @return The temporary image, or {@code null} if there is no temporary
 690          *         image with the given ID
 691          */
 692         public TemporaryImage getTemporaryImage(String imageId) {
 693                 synchronized (temporaryImages) {
 694                         return temporaryImages.get(imageId);
 695                 }
 696         }
 697
 698         //
 699         // ACTIONS
 700         //
 701
 702         /**
 703          * Locks the given Sone. A locked Sone will not be inserted by
 704          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 705          * again.
 706          *
 707          * @param sone
 708          *            The sone to lock
 709          */
 710         public void lockSone(Sone sone) {
 711                 synchronized (lockedSones) {
 712                         if (lockedSones.add(sone)) {
 713                                 eventBus.post(new SoneLockedEvent(sone));
 714                         }
 715                 }
 716         }
 717
 718         /**
 719          * Unlocks the given Sone.
 720          *
 721          * @see #lockSone(Sone)
 722          * @param sone
 723          *            The sone to unlock
 724          */
 725         public void unlockSone(Sone sone) {
 726                 synchronized (lockedSones) {
 727                         if (lockedSones.remove(sone)) {
 728                                 eventBus.post(new SoneUnlockedEvent(sone));
 729                         }
 730                 }
 731         }
 732
 733         /**
 734          * Adds a local Sone from the given own identity.
 735          *
 736          * @param ownIdentity
 737          *            The own identity to create a Sone from
 738          * @return The added (or already existing) Sone
 739          */
 740         public Sone addLocalSone(OwnIdentity ownIdentity) {
 741                 if (ownIdentity == null) {
 742                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 743                         return null;
 744                 }
 745                 synchronized (sones) {
 746                         final Sone sone;
 747                         try {
 748                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 749                         } catch (MalformedURLException mue1) {
 750                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 751                                 return null;
 752                         }
 753                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 754                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 755                         sone.setKnown(true);
 756                         /* TODO - load posts ’n stuff */
 757                         sones.put(ownIdentity.getId(), sone);
 758                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 759                         soneInserters.put(sone, soneInserter);
 760                         sone.setStatus(SoneStatus.idle);
 761                         loadSone(sone);
 762                         soneInserter.start();
 763                         return sone;
 764                 }
 765         }
 766
 767         /**
 768          * Creates a new Sone for the given own identity.
 769          *
 770          * @param ownIdentity
 771          *            The own identity to create a Sone for
 772          * @return The created Sone
 773          */
 774         public Sone createSone(OwnIdentity ownIdentity) {
 775                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 776                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 777                         return null;
 778                 }
 779                 Sone sone = addLocalSone(ownIdentity);
 780                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 781                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 782                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 783                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 784                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 785                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 786
 787                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 788                 touchConfiguration();
 789                 return sone;
 790         }
 791
 792         /**
 793          * Adds the Sone of the given identity.
 794          *
 795          * @param identity
 796          *            The identity whose Sone to add
 797          * @return The added or already existing Sone
 798          */
 799         public Sone addRemoteSone(Identity identity) {
 800                 if (identity == null) {
 801                         logger.log(Level.WARNING, "Given Identity is null!");
 802                         return null;
 803                 }
 804                 synchronized (sones) {
 805                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 806                         boolean newSone = sone.getRequestUri() == null;
 807                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 808                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 809                         if (newSone) {
 810                                 synchronized (knownSones) {
 811                                         newSone = !knownSones.contains(sone.getId());
 812                                 }
 813                                 sone.setKnown(!newSone);
 814                                 if (newSone) {
 815                                         eventBus.post(new NewSoneFoundEvent(sone));
 816                                         for (Sone localSone : getLocalSones()) {
 817                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 818                                                         followSone(localSone, sone.getId());
 819                                                 }
 820                                         }
 821                                 }
 822                         }
 823                         soneDownloader.addSone(sone);
 824                         soneDownloaders.execute(new Runnable() {
 825
 826                                 @Override
 827                                 @SuppressWarnings("synthetic-access")
 828                                 public void run() {
 829                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 830                                 }
 831
 832                         });
 833                         return sone;
 834                 }
 835         }
 836
 837         /**
 838          * Lets the given local Sone follow the Sone with the given ID.
 839          *
 840          * @param sone
 841          *            The local Sone that should follow another Sone
 842          * @param soneId
 843          *            The ID of the Sone to follow
 844          */
 845         public void followSone(Sone sone, String soneId) {
 846                 checkNotNull(sone, "sone must not be null");
 847                 checkNotNull(soneId, "soneId must not be null");
 848                 sone.addFriend(soneId);
 849                 synchronized (soneFollowingTimes) {
 850                         if (!soneFollowingTimes.containsKey(soneId)) {
 851                                 long now = System.currentTimeMillis();
 852                                 soneFollowingTimes.put(soneId, now);
 853                                 Optional<Sone> followedSone = getSone(soneId);
 854                                 if (!followedSone.isPresent()) {
 855                                         return;
 856                                 }
 857                                 for (Post post : followedSone.get().getPosts()) {
 858                                         if (post.getTime() < now) {
 859                                                 markPostKnown(post);
 860                                         }
 861                                 }
 862                                 for (PostReply reply : followedSone.get().getReplies()) {
 863                                         if (reply.getTime() < now) {
 864                                                 markReplyKnown(reply);
 865                                         }
 866                                 }
 867                         }
 868                 }
 869                 touchConfiguration();
 870         }
 871
 872         /**
 873          * Lets the given local Sone unfollow the Sone with the given ID.
 874          *
 875          * @param sone
 876          *            The local Sone that should unfollow another Sone
 877          * @param soneId
 878          *            The ID of the Sone being unfollowed
 879          */
 880         public void unfollowSone(Sone sone, String soneId) {
 881                 checkNotNull(sone, "sone must not be null");
 882                 checkNotNull(soneId, "soneId must not be null");
 883                 sone.removeFriend(soneId);
 884                 boolean unfollowedSoneStillFollowed = false;
 885                 for (Sone localSone : getLocalSones()) {
 886                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 887                 }
 888                 if (!unfollowedSoneStillFollowed) {
 889                         synchronized (soneFollowingTimes) {
 890                                 soneFollowingTimes.remove(soneId);
 891                         }
 892                 }
 893                 touchConfiguration();
 894         }
 895
 896         /**
 897          * Sets the trust value of the given origin Sone for the target Sone.
 898          *
 899          * @param origin
 900          *            The origin Sone
 901          * @param target
 902          *            The target Sone
 903          * @param trustValue
 904          *            The trust value (from {@code -100} to {@code 100})
 905          */
 906         public void setTrust(Sone origin, Sone target, int trustValue) {
 907                 checkNotNull(origin, "origin must not be null");
 908                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 909                 checkNotNull(target, "target must not be null");
 910                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 911                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 912         }
 913
 914         /**
 915          * Removes any trust assignment for the given target Sone.
 916          *
 917          * @param origin
 918          *            The trust origin
 919          * @param target
 920          *            The trust target
 921          */
 922         public void removeTrust(Sone origin, Sone target) {
 923                 checkNotNull(origin, "origin must not be null");
 924                 checkNotNull(target, "target must not be null");
 925                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 926                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 927         }
 928
 929         /**
 930          * Assigns the configured positive trust value for the given target.
 931          *
 932          * @param origin
 933          *            The trust origin
 934          * @param target
 935          *            The trust target
 936          */
 937         public void trustSone(Sone origin, Sone target) {
 938                 setTrust(origin, target, preferences.getPositiveTrust());
 939         }
 940
 941         /**
 942          * Assigns the configured negative trust value for the given target.
 943          *
 944          * @param origin
 945          *            The trust origin
 946          * @param target
 947          *            The trust target
 948          */
 949         public void distrustSone(Sone origin, Sone target) {
 950                 setTrust(origin, target, preferences.getNegativeTrust());
 951         }
 952
 953         /**
 954          * Removes the trust assignment for the given target.
 955          *
 956          * @param origin
 957          *            The trust origin
 958          * @param target
 959          *            The trust target
 960          */
 961         public void untrustSone(Sone origin, Sone target) {
 962                 removeTrust(origin, target);
 963         }
 964
 965         /**
 966          * Updates the stored Sone with the given Sone.
 967          *
 968          * @param sone
 969          *            The updated Sone
 970          */
 971         public void updateSone(Sone sone) {
 972                 updateSone(sone, false);
 973         }
 974
 975         /**
 976          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
 977          * {@code true}, an older Sone than the current Sone can be given to restore
 978          * an old state.
 979          *
 980          * @param sone
 981          *            The Sone to update
 982          * @param soneRescueMode
 983          *            {@code true} if the stored Sone should be updated regardless
 984          *            of the age of the given Sone
 985          */
 986         public void updateSone(Sone sone, boolean soneRescueMode) {
 987                 Optional<Sone> storedSone = getSone(sone.getId());
 988                 if (storedSone.isPresent()) {
 989                         if (!soneRescueMode && !(sone.getTime() > storedSone.get().getTime())) {
 990                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
 991                                 return;
 992                         }
 993                         /* find removed posts. */
 994                         Collection<Post> existingPosts = database.getPosts(sone.getId());
 995                         for (Post oldPost : existingPosts) {
 996                                 if (!sone.getPosts().contains(oldPost)) {
 997                                         eventBus.post(new PostRemovedEvent(oldPost));
 998                                 }
 999                         }
1000                         /* find new posts. */
1001                         for (Post newPost : sone.getPosts()) {
1002                                 if (existingPosts.contains(newPost)) {
1003                                         continue;
1004                                 }
1005                                 if (newPost.getTime() < getSoneFollowingTime(sone)) {
1006                                         newPost.setKnown(true);
1007                                 } else if (!newPost.isKnown()) {
1008                                         eventBus.post(new NewPostFoundEvent(newPost));
1009                                 }
1010                         }
1011                         /* store posts. */
1012                         database.storePosts(sone, sone.getPosts());
1013                         if (!soneRescueMode) {
1014                                 for (PostReply reply : storedSone.get().getReplies()) {
1015                                         if (!sone.getReplies().contains(reply)) {
1016                                                 eventBus.post(new PostReplyRemovedEvent(reply));
1017                                         }
1018                                 }
1019                         }
1020                         Set<PostReply> storedReplies = storedSone.get().getReplies();
1021                         for (PostReply reply : sone.getReplies()) {
1022                                 if (storedReplies.contains(reply)) {
1023                                         continue;
1024                                 }
1025                                 if (reply.getTime() < getSoneFollowingTime(sone)) {
1026                                         reply.setKnown(true);
1027                                 } else if (!reply.isKnown()) {
1028                                         eventBus.post(new NewPostReplyFoundEvent(reply));
1029                                 }
1030                         }
1031                         database.storePostReplies(sone, sone.getReplies());
1032                         synchronized (albums) {
1033                                 synchronized (images) {
1034                                         for (Album album : storedSone.get().getAlbums()) {
1035                                                 albums.remove(album.getId());
1036                                                 for (Image image : album.getImages()) {
1037                                                         images.remove(image.getId());
1038                                                 }
1039                                         }
1040                                         for (Album album : sone.getAlbums()) {
1041                                                 albums.put(album.getId(), album);
1042                                                 for (Image image : album.getImages()) {
1043                                                         images.put(image.getId(), image);
1044                                                 }
1045                                         }
1046                                 }
1047                         }
1048                         synchronized (sones) {
1049                                 sone.setOptions(storedSone.get().getOptions());
1050                                 sones.put(sone.getId(), sone);
1051                         }
1052                 }
1053         }
1054
1055         /**
1056          * Deletes the given Sone. This will remove the Sone from the
1057          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1058          * remove the context from its identity.
1059          *
1060          * @param sone
1061          *            The Sone to delete
1062          */
1063         public void deleteSone(Sone sone) {
1064                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1065                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1066                         return;
1067                 }
1068                 synchronized (sones) {
1069                         if (!getLocalSones().contains(sone)) {
1070                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1071                                 return;
1072                         }
1073                         sones.remove(sone.getId());
1074                         SoneInserter soneInserter = soneInserters.remove(sone);
1075                         soneInserter.stop();
1076                 }
1077                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1078                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1079                 try {
1080                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1081                 } catch (ConfigurationException ce1) {
1082                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1083                 }
1084         }
1085
1086         /**
1087          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1088          * known} before, a {@link MarkSoneKnownEvent} is fired.
1089          *
1090          * @param sone
1091          *            The Sone to mark as known
1092          */
1093         public void markSoneKnown(Sone sone) {
1094                 if (!sone.isKnown()) {
1095                         sone.setKnown(true);
1096                         synchronized (knownSones) {
1097                                 knownSones.add(sone.getId());
1098                         }
1099                         eventBus.post(new MarkSoneKnownEvent(sone));
1100                         touchConfiguration();
1101                 }
1102         }
1103
1104         /**
1105          * Loads and updates the given Sone from the configuration. If any error is
1106          * encountered, loading is aborted and the given Sone is not changed.
1107          *
1108          * @param sone
1109          *            The Sone to load and update
1110          */
1111         public void loadSone(Sone sone) {
1112                 if (!sone.isLocal()) {
1113                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1114                         return;
1115                 }
1116
1117                 /* initialize options. */
1118                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1119                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1120                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1121                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1122                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1123                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1124
1125                 /* load Sone. */
1126                 String sonePrefix = "Sone/" + sone.getId();
1127                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1128                 if (soneTime == null) {
1129                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1130                         return;
1131                 }
1132                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1133
1134                 /* load profile. */
1135                 Profile profile = new Profile(sone);
1136                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1137                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1138                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1139                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1140                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1141                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1142
1143                 /* load profile fields. */
1144                 while (true) {
1145                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1146                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1147                         if (fieldName == null) {
1148                                 break;
1149                         }
1150                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1151                         profile.addField(fieldName).setValue(fieldValue);
1152                 }
1153
1154                 /* load posts. */
1155                 Set<Post> posts = new HashSet<Post>();
1156                 while (true) {
1157                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1158                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1159                         if (postId == null) {
1160                                 break;
1161                         }
1162                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1163                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1164                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1165                         if ((postTime == 0) || (postText == null)) {
1166                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1167                                 return;
1168                         }
1169                         PostBuilder postBuilder = postBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1170                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1171                                 postBuilder.to(postRecipientId);
1172                         }
1173                         posts.add(postBuilder.build());
1174                 }
1175
1176                 /* load replies. */
1177                 Set<PostReply> replies = new HashSet<PostReply>();
1178                 while (true) {
1179                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1180                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1181                         if (replyId == null) {
1182                                 break;
1183                         }
1184                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1185                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1186                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1187                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1188                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1189                                 return;
1190                         }
1191                         PostReplyBuilder postReplyBuilder = postReplyBuilder().withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1192                         replies.add(postReplyBuilder.build());
1193                 }
1194
1195                 /* load post likes. */
1196                 Set<String> likedPostIds = new HashSet<String>();
1197                 while (true) {
1198                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1199                         if (likedPostId == null) {
1200                                 break;
1201                         }
1202                         likedPostIds.add(likedPostId);
1203                 }
1204
1205                 /* load reply likes. */
1206                 Set<String> likedReplyIds = new HashSet<String>();
1207                 while (true) {
1208                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1209                         if (likedReplyId == null) {
1210                                 break;
1211                         }
1212                         likedReplyIds.add(likedReplyId);
1213                 }
1214
1215                 /* load friends. */
1216                 Set<String> friends = new HashSet<String>();
1217                 while (true) {
1218                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1219                         if (friendId == null) {
1220                                 break;
1221                         }
1222                         friends.add(friendId);
1223                 }
1224
1225                 /* load albums. */
1226                 List<Album> topLevelAlbums = new ArrayList<Album>();
1227                 int albumCounter = 0;
1228                 while (true) {
1229                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1230                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1231                         if (albumId == null) {
1232                                 break;
1233                         }
1234                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1235                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1236                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1237                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1238                         if ((albumTitle == null) || (albumDescription == null)) {
1239                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1240                                 return;
1241                         }
1242                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1243                         if (albumParentId != null) {
1244                                 Album parentAlbum = getAlbum(albumParentId, false);
1245                                 if (parentAlbum == null) {
1246                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1247                                         return;
1248                                 }
1249                                 parentAlbum.addAlbum(album);
1250                         } else {
1251                                 if (!topLevelAlbums.contains(album)) {
1252                                         topLevelAlbums.add(album);
1253                                 }
1254                         }
1255                 }
1256
1257                 /* load images. */
1258                 int imageCounter = 0;
1259                 while (true) {
1260                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1261                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1262                         if (imageId == null) {
1263                                 break;
1264                         }
1265                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1266                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1267                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1268                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1269                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1270                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1271                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1272                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1273                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1274                                 return;
1275                         }
1276                         Album album = getAlbum(albumId, false);
1277                         if (album == null) {
1278                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1279                                 return;
1280                         }
1281                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1282                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1283                         album.addImage(image);
1284                 }
1285
1286                 /* load avatar. */
1287                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1288                 if (avatarId != null) {
1289                         profile.setAvatar(getImage(avatarId, false));
1290                 }
1291
1292                 /* load options. */
1293                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1294                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1295                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1296                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1297                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1298                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1299
1300                 /* if we’re still here, Sone was loaded successfully. */
1301                 synchronized (sone) {
1302                         sone.setTime(soneTime);
1303                         sone.setProfile(profile);
1304                         sone.setPosts(posts);
1305                         sone.setReplies(replies);
1306                         sone.setLikePostIds(likedPostIds);
1307                         sone.setLikeReplyIds(likedReplyIds);
1308                         for (String friendId : friends) {
1309                                 followSone(sone, friendId);
1310                         }
1311                         sone.setAlbums(topLevelAlbums);
1312                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1313                 }
1314                 synchronized (knownSones) {
1315                         for (String friend : friends) {
1316                                 knownSones.add(friend);
1317                         }
1318                 }
1319                 database.storePosts(sone, posts);
1320                 for (Post post : posts) {
1321                         post.setKnown(true);
1322                 }
1323                 database.storePostReplies(sone, replies);
1324                 for (PostReply reply : replies) {
1325                         reply.setKnown(true);
1326                 }
1327         }
1328
1329         /**
1330          * Creates a new post.
1331          *
1332          * @param sone
1333          *            The Sone that creates the post
1334          * @param text
1335          *            The text of the post
1336          * @return The created post
1337          */
1338         public Post createPost(Sone sone, String text) {
1339                 return createPost(sone, System.currentTimeMillis(), text);
1340         }
1341
1342         /**
1343          * Creates a new post.
1344          *
1345          * @param sone
1346          *            The Sone that creates the post
1347          * @param time
1348          *            The time of the post
1349          * @param text
1350          *            The text of the post
1351          * @return The created post
1352          */
1353         public Post createPost(Sone sone, long time, String text) {
1354                 return createPost(sone, null, time, text);
1355         }
1356
1357         /**
1358          * Creates a new post.
1359          *
1360          * @param sone
1361          *            The Sone that creates the post
1362          * @param recipient
1363          *            The recipient Sone, or {@code null} if this post does not have
1364          *            a recipient
1365          * @param text
1366          *            The text of the post
1367          * @return The created post
1368          */
1369         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1370                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1371         }
1372
1373         /**
1374          * Creates a new post.
1375          *
1376          * @param sone
1377          *            The Sone that creates the post
1378          * @param recipient
1379          *            The recipient Sone, or {@code null} if this post does not have
1380          *            a recipient
1381          * @param time
1382          *            The time of the post
1383          * @param text
1384          *            The text of the post
1385          * @return The created post
1386          */
1387         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1388                 checkNotNull(text, "text must not be null");
1389                 checkArgument(text.trim().length() > 0, "text must not be empty");
1390                 if (!sone.isLocal()) {
1391                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1392                         return null;
1393                 }
1394                 PostBuilder postBuilder = database.newPostBuilder();
1395                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1396                 if (recipient.isPresent()) {
1397                         postBuilder.to(recipient.get().getId());
1398                 }
1399                 final Post post = postBuilder.build();
1400                 database.storePost(post);
1401                 eventBus.post(new NewPostFoundEvent(post));
1402                 sone.addPost(post);
1403                 touchConfiguration();
1404                 localElementTicker.schedule(new Runnable() {
1405
1406                         /**
1407                          * {@inheritDoc}
1408                          */
1409                         @Override
1410                         public void run() {
1411                                 markPostKnown(post);
1412                         }
1413                 }, 10, TimeUnit.SECONDS);
1414                 return post;
1415         }
1416
1417         /**
1418          * Deletes the given post.
1419          *
1420          * @param post
1421          *            The post to delete
1422          */
1423         public void deletePost(Post post) {
1424                 if (!post.getSone().isLocal()) {
1425                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1426                         return;
1427                 }
1428                 database.removePost(post);
1429                 eventBus.post(new PostRemovedEvent(post));
1430                 markPostKnown(post);
1431                 touchConfiguration();
1432         }
1433
1434         /**
1435          * Marks the given post as known, if it is currently not a known post
1436          * (according to {@link Post#isKnown()}).
1437          *
1438          * @param post
1439          *            The post to mark as known
1440          */
1441         public void markPostKnown(Post post) {
1442                 post.setKnown(true);
1443                 eventBus.post(new MarkPostKnownEvent(post));
1444                 touchConfiguration();
1445                 for (PostReply reply : getReplies(post.getId())) {
1446                         markReplyKnown(reply);
1447                 }
1448         }
1449
1450         /**
1451          * Bookmarks the given post.
1452          *
1453          * @param post
1454          *            The post to bookmark
1455          */
1456         public void bookmark(Post post) {
1457                 bookmarkPost(post.getId());
1458         }
1459
1460         /**
1461          * Bookmarks the post with the given ID.
1462          *
1463          * @param id
1464          *            The ID of the post to bookmark
1465          */
1466         public void bookmarkPost(String id) {
1467                 synchronized (bookmarkedPosts) {
1468                         bookmarkedPosts.add(id);
1469                 }
1470         }
1471
1472         /**
1473          * Removes the given post from the bookmarks.
1474          *
1475          * @param post
1476          *            The post to unbookmark
1477          */
1478         public void unbookmark(Post post) {
1479                 unbookmarkPost(post.getId());
1480         }
1481
1482         /**
1483          * Removes the post with the given ID from the bookmarks.
1484          *
1485          * @param id
1486          *            The ID of the post to unbookmark
1487          */
1488         public void unbookmarkPost(String id) {
1489                 synchronized (bookmarkedPosts) {
1490                         bookmarkedPosts.remove(id);
1491                 }
1492         }
1493
1494         /**
1495          * Creates a new reply.
1496          *
1497          * @param sone
1498          *            The Sone that creates the reply
1499          * @param post
1500          *            The post that this reply refers to
1501          * @param text
1502          *            The text of the reply
1503          * @return The created reply
1504          */
1505         public PostReply createReply(Sone sone, Post post, String text) {
1506                 checkNotNull(text, "text must not be null");
1507                 checkArgument(text.trim().length() > 0, "text must not be empty");
1508                 if (!sone.isLocal()) {
1509                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1510                         return null;
1511                 }
1512                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1513                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1514                 final PostReply reply = postReplyBuilder.build();
1515                 database.storePostReply(reply);
1516                 eventBus.post(new NewPostReplyFoundEvent(reply));
1517                 sone.addReply(reply);
1518                 touchConfiguration();
1519                 localElementTicker.schedule(new Runnable() {
1520
1521                         /**
1522                          * {@inheritDoc}
1523                          */
1524                         @Override
1525                         public void run() {
1526                                 markReplyKnown(reply);
1527                         }
1528                 }, 10, TimeUnit.SECONDS);
1529                 return reply;
1530         }
1531
1532         /**
1533          * Deletes the given reply.
1534          *
1535          * @param reply
1536          *            The reply to delete
1537          */
1538         public void deleteReply(PostReply reply) {
1539                 Sone sone = reply.getSone();
1540                 if (!sone.isLocal()) {
1541                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1542                         return;
1543                 }
1544                 database.removePostReply(reply);
1545                 markReplyKnown(reply);
1546                 sone.removeReply(reply);
1547                 touchConfiguration();
1548         }
1549
1550         /**
1551          * Marks the given reply as known, if it is currently not a known reply
1552          * (according to {@link Reply#isKnown()}).
1553          *
1554          * @param reply
1555          *            The reply to mark as known
1556          */
1557         public void markReplyKnown(PostReply reply) {
1558                 boolean previouslyKnown = reply.isKnown();
1559                 reply.setKnown(true);
1560                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1561                 if (!previouslyKnown) {
1562                         touchConfiguration();
1563                 }
1564         }
1565
1566         /**
1567          * Creates a new top-level album for the given Sone.
1568          *
1569          * @param sone
1570          *            The Sone to create the album for
1571          * @return The new album
1572          */
1573         public Album createAlbum(Sone sone) {
1574                 return createAlbum(sone, null);
1575         }
1576
1577         /**
1578          * Creates a new album for the given Sone.
1579          *
1580          * @param sone
1581          *            The Sone to create the album for
1582          * @param parent
1583          *            The parent of the album (may be {@code null} to create a
1584          *            top-level album)
1585          * @return The new album
1586          */
1587         public Album createAlbum(Sone sone, Album parent) {
1588                 Album album = new Album();
1589                 synchronized (albums) {
1590                         albums.put(album.getId(), album);
1591                 }
1592                 album.setSone(sone);
1593                 if (parent != null) {
1594                         parent.addAlbum(album);
1595                 } else {
1596                         sone.addAlbum(album);
1597                 }
1598                 return album;
1599         }
1600
1601         /**
1602          * Deletes the given album. The owner of the album has to be a local Sone,
1603          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1604          *
1605          * @param album
1606          *            The album to remove
1607          */
1608         public void deleteAlbum(Album album) {
1609                 checkNotNull(album, "album must not be null");
1610                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1611                 if (!album.isEmpty()) {
1612                         return;
1613                 }
1614                 if (album.getParent() == null) {
1615                         album.getSone().removeAlbum(album);
1616                 } else {
1617                         album.getParent().removeAlbum(album);
1618                 }
1619                 synchronized (albums) {
1620                         albums.remove(album.getId());
1621                 }
1622                 touchConfiguration();
1623         }
1624
1625         /**
1626          * Creates a new image.
1627          *
1628          * @param sone
1629          *            The Sone creating the image
1630          * @param album
1631          *            The album the image will be inserted into
1632          * @param temporaryImage
1633          *            The temporary image to create the image from
1634          * @return The newly created image
1635          */
1636         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1637                 checkNotNull(sone, "sone must not be null");
1638                 checkNotNull(album, "album must not be null");
1639                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1640                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1641                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1642                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1643                 album.addImage(image);
1644                 synchronized (images) {
1645                         images.put(image.getId(), image);
1646                 }
1647                 imageInserter.insertImage(temporaryImage, image);
1648                 return image;
1649         }
1650
1651         /**
1652          * Deletes the given image. This method will also delete a matching
1653          * temporary image.
1654          *
1655          * @see #deleteTemporaryImage(TemporaryImage)
1656          * @param image
1657          *            The image to delete
1658          */
1659         public void deleteImage(Image image) {
1660                 checkNotNull(image, "image must not be null");
1661                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1662                 deleteTemporaryImage(image.getId());
1663                 image.getAlbum().removeImage(image);
1664                 synchronized (images) {
1665                         images.remove(image.getId());
1666                 }
1667                 touchConfiguration();
1668         }
1669
1670         /**
1671          * Creates a new temporary image.
1672          *
1673          * @param mimeType
1674          *            The MIME type of the temporary image
1675          * @param imageData
1676          *            The encoded data of the image
1677          * @return The temporary image
1678          */
1679         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1680                 TemporaryImage temporaryImage = new TemporaryImage();
1681                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1682                 synchronized (temporaryImages) {
1683                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1684                 }
1685                 return temporaryImage;
1686         }
1687
1688         /**
1689          * Deletes the given temporary image.
1690          *
1691          * @param temporaryImage
1692          *            The temporary image to delete
1693          */
1694         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1695                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1696                 deleteTemporaryImage(temporaryImage.getId());
1697         }
1698
1699         /**
1700          * Deletes the temporary image with the given ID.
1701          *
1702          * @param imageId
1703          *            The ID of the temporary image to delete
1704          */
1705         public void deleteTemporaryImage(String imageId) {
1706                 checkNotNull(imageId, "imageId must not be null");
1707                 synchronized (temporaryImages) {
1708                         temporaryImages.remove(imageId);
1709                 }
1710                 Image image = getImage(imageId, false);
1711                 if (image != null) {
1712                         imageInserter.cancelImageInsert(image);
1713                 }
1714         }
1715
1716         /**
1717          * Notifies the core that the configuration, either of the core or of a
1718          * single local Sone, has changed, and that the configuration should be
1719          * saved.
1720          */
1721         public void touchConfiguration() {
1722                 lastConfigurationUpdate = System.currentTimeMillis();
1723         }
1724
1725         //
1726         // SERVICE METHODS
1727         //
1728
1729         /**
1730          * Starts the core.
1731          */
1732         @Override
1733         public void serviceStart() {
1734                 loadConfiguration();
1735                 updateChecker.start();
1736                 identityManager.start();
1737                 webOfTrustUpdater.init();
1738                 webOfTrustUpdater.start();
1739                 database.start();
1740         }
1741
1742         /**
1743          * {@inheritDoc}
1744          */
1745         @Override
1746         public void serviceRun() {
1747                 long lastSaved = System.currentTimeMillis();
1748                 while (!shouldStop()) {
1749                         sleep(1000);
1750                         long now = System.currentTimeMillis();
1751                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1752                                 for (Sone localSone : getLocalSones()) {
1753                                         saveSone(localSone);
1754                                 }
1755                                 saveConfiguration();
1756                                 lastSaved = now;
1757                         }
1758                 }
1759         }
1760
1761         /**
1762          * Stops the core.
1763          */
1764         @Override
1765         public void serviceStop() {
1766                 localElementTicker.shutdownNow();
1767                 synchronized (sones) {
1768                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1769                                 soneInserter.getValue().stop();
1770                                 saveSone(soneInserter.getKey());
1771                         }
1772                 }
1773                 saveConfiguration();
1774                 database.stop();
1775                 webOfTrustUpdater.stop();
1776                 updateChecker.stop();
1777                 soneDownloader.stop();
1778                 soneDownloaders.shutdown();
1779                 identityManager.stop();
1780         }
1781
1782         //
1783         // PRIVATE METHODS
1784         //
1785
1786         /**
1787          * Saves the given Sone. This will persist all local settings for the given
1788          * Sone, such as the friends list and similar, private options.
1789          *
1790          * @param sone
1791          *            The Sone to save
1792          */
1793         private synchronized void saveSone(Sone sone) {
1794                 if (!sone.isLocal()) {
1795                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1796                         return;
1797                 }
1798                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1799                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1800                         return;
1801                 }
1802
1803                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1804                 try {
1805                         /* save Sone into configuration. */
1806                         String sonePrefix = "Sone/" + sone.getId();
1807                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1808                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1809
1810                         /* save profile. */
1811                         Profile profile = sone.getProfile();
1812                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1813                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1814                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1815                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1816                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1817                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1818                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1819
1820                         /* save profile fields. */
1821                         int fieldCounter = 0;
1822                         for (Field profileField : profile.getFields()) {
1823                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1824                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1825                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1826                         }
1827                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1828
1829                         /* save posts. */
1830                         int postCounter = 0;
1831                         for (Post post : sone.getPosts()) {
1832                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1833                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1834                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1835                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1836                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1837                         }
1838                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1839
1840                         /* save replies. */
1841                         int replyCounter = 0;
1842                         for (PostReply reply : sone.getReplies()) {
1843                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1844                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1845                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1846                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1847                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1848                         }
1849                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1850
1851                         /* save post likes. */
1852                         int postLikeCounter = 0;
1853                         for (String postId : sone.getLikedPostIds()) {
1854                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1855                         }
1856                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1857
1858                         /* save reply likes. */
1859                         int replyLikeCounter = 0;
1860                         for (String replyId : sone.getLikedReplyIds()) {
1861                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1862                         }
1863                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1864
1865                         /* save friends. */
1866                         int friendCounter = 0;
1867                         for (String friendId : sone.getFriends()) {
1868                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1869                         }
1870                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1871
1872                         /* save albums. first, collect in a flat structure, top-level first. */
1873                         List<Album> albums = FluentIterable.from(sone.getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1874
1875                         int albumCounter = 0;
1876                         for (Album album : albums) {
1877                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1878                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1879                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1880                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1881                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1882                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1883                         }
1884                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1885
1886                         /* save images. */
1887                         int imageCounter = 0;
1888                         for (Album album : albums) {
1889                                 for (Image image : album.getImages()) {
1890                                         if (!image.isInserted()) {
1891                                                 continue;
1892                                         }
1893                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1894                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1895                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1896                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1897                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1898                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1899                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1900                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1901                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1902                                 }
1903                         }
1904                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1905
1906                         /* save options. */
1907                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
1908                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
1909                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
1910                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
1911                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
1912                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
1913
1914                         configuration.save();
1915
1916                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1917
1918                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1919                 } catch (ConfigurationException ce1) {
1920                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1921                 }
1922         }
1923
1924         /**
1925          * Saves the current options.
1926          */
1927         private void saveConfiguration() {
1928                 synchronized (configuration) {
1929                         if (storingConfiguration) {
1930                                 logger.log(Level.FINE, "Already storing configuration…");
1931                                 return;
1932                         }
1933                         storingConfiguration = true;
1934                 }
1935
1936                 /* store the options first. */
1937                 try {
1938                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1939                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1940                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1941                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1942                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1943                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1944                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1945                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1946                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1947                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1948                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1949                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1950
1951                         /* save known Sones. */
1952                         int soneCounter = 0;
1953                         synchronized (knownSones) {
1954                                 for (String knownSoneId : knownSones) {
1955                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1956                                 }
1957                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1958                         }
1959
1960                         /* save Sone following times. */
1961                         soneCounter = 0;
1962                         synchronized (soneFollowingTimes) {
1963                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1964                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1965                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1966                                         ++soneCounter;
1967                                 }
1968                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1969                         }
1970
1971                         /* save known posts. */
1972                         database.save();
1973
1974                         /* save bookmarked posts. */
1975                         int bookmarkedPostCounter = 0;
1976                         synchronized (bookmarkedPosts) {
1977                                 for (String bookmarkedPostId : bookmarkedPosts) {
1978                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1979                                 }
1980                         }
1981                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1982
1983                         /* now save it. */
1984                         configuration.save();
1985
1986                 } catch (ConfigurationException ce1) {
1987                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1988                 } catch (DatabaseException de1) {
1989                         logger.log(Level.SEVERE, "Could not save database!", de1);
1990                 } finally {
1991                         synchronized (configuration) {
1992                                 storingConfiguration = false;
1993                         }
1994                 }
1995         }
1996
1997         /**
1998          * Loads the configuration.
1999          */
2000         private void loadConfiguration() {
2001                 /* create options. */
2002                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2003
2004                         @Override
2005                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2006                                 SoneInserter.setInsertionDelay(newValue);
2007                         }
2008
2009                 }));
2010                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2011                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2012                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2013                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2014                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2015                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
2016                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
2017                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2018                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2019
2020                         @Override
2021                         @SuppressWarnings("synthetic-access")
2022                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2023                                 fcpInterface.setActive(newValue);
2024                         }
2025                 }));
2026                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2027
2028                         @Override
2029                         @SuppressWarnings("synthetic-access")
2030                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2031                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2032                         }
2033
2034                 }));
2035
2036                 loadConfigurationValue("InsertionDelay");
2037                 loadConfigurationValue("PostsPerPage");
2038                 loadConfigurationValue("ImagesPerPage");
2039                 loadConfigurationValue("CharactersPerPost");
2040                 loadConfigurationValue("PostCutOffLength");
2041                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2042                 loadConfigurationValue("PositiveTrust");
2043                 loadConfigurationValue("NegativeTrust");
2044                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2045                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2046                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2047
2048                 /* load known Sones. */
2049                 int soneCounter = 0;
2050                 while (true) {
2051                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2052                         if (knownSoneId == null) {
2053                                 break;
2054                         }
2055                         synchronized (knownSones) {
2056                                 knownSones.add(knownSoneId);
2057                         }
2058                 }
2059
2060                 /* load Sone following times. */
2061                 soneCounter = 0;
2062                 while (true) {
2063                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2064                         if (soneId == null) {
2065                                 break;
2066                         }
2067                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2068                         synchronized (soneFollowingTimes) {
2069                                 soneFollowingTimes.put(soneId, time);
2070                         }
2071                         ++soneCounter;
2072                 }
2073
2074                 /* load bookmarked posts. */
2075                 int bookmarkedPostCounter = 0;
2076                 while (true) {
2077                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2078                         if (bookmarkedPostId == null) {
2079                                 break;
2080                         }
2081                         synchronized (bookmarkedPosts) {
2082                                 bookmarkedPosts.add(bookmarkedPostId);
2083                         }
2084                 }
2085
2086         }
2087
2088         /**
2089          * Loads an {@link Integer} configuration value for the option with the
2090          * given name, logging validation failures.
2091          *
2092          * @param optionName
2093          *            The name of the option to load
2094          */
2095         private void loadConfigurationValue(String optionName) {
2096                 try {
2097                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2098                 } catch (IllegalArgumentException iae1) {
2099                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2100                 }
2101         }
2102
2103         /**
2104          * Notifies the core that a new {@link OwnIdentity} was added.
2105          *
2106          * @param ownIdentityAddedEvent
2107          *            The event
2108          */
2109         @Subscribe
2110         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2111                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2112                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2113                 if (ownIdentity.hasContext("Sone")) {
2114                         addLocalSone(ownIdentity);
2115                 }
2116         }
2117
2118         /**
2119          * Notifies the core that an {@link OwnIdentity} was removed.
2120          *
2121          * @param ownIdentityRemovedEvent
2122          *            The event
2123          */
2124         @Subscribe
2125         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2126                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2127                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2128                 trustedIdentities.removeAll(ownIdentity);
2129         }
2130
2131         /**
2132          * Notifies the core that a new {@link Identity} was added.
2133          *
2134          * @param identityAddedEvent
2135          *            The event
2136          */
2137         @Subscribe
2138         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2139                 Identity identity = identityAddedEvent.identity();
2140                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2141                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
2142                 addRemoteSone(identity);
2143         }
2144
2145         /**
2146          * Notifies the core that an {@link Identity} was updated.
2147          *
2148          * @param identityUpdatedEvent
2149          *            The event
2150          */
2151         @Subscribe
2152         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2153                 final Identity identity = identityUpdatedEvent.identity();
2154                 soneDownloaders.execute(new Runnable() {
2155
2156                         @Override
2157                         @SuppressWarnings("synthetic-access")
2158                         public void run() {
2159                                 Sone sone = getRemoteSone(identity.getId(), false);
2160                                 sone.setIdentity(identity);
2161                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2162                                 soneDownloader.addSone(sone);
2163                                 soneDownloader.fetchSone(sone);
2164                         }
2165                 });
2166         }
2167
2168         /**
2169          * Notifies the core that an {@link Identity} was removed.
2170          *
2171          * @param identityRemovedEvent
2172          *            The event
2173          */
2174         @Subscribe
2175         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2176                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2177                 Identity identity = identityRemovedEvent.identity();
2178                 trustedIdentities.remove(ownIdentity, identity);
2179                 boolean foundIdentity = false;
2180                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
2181                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2182                                 continue;
2183                         }
2184                         if (trustedIdentity.getValue().contains(identity)) {
2185                                 foundIdentity = true;
2186                         }
2187                 }
2188                 if (foundIdentity) {
2189                         /* some local identity still trusts this identity, don’t remove. */
2190                         return;
2191                 }
2192                 Optional<Sone> sone = getSone(identity.getId());
2193                 if (!sone.isPresent()) {
2194                         /* TODO - we don’t have the Sone anymore. should this happen? */
2195                         return;
2196                 }
2197                 database.removePosts(sone.get());
2198                 for (Post post : sone.get().getPosts()) {
2199                         eventBus.post(new PostRemovedEvent(post));
2200                 }
2201                 database.removePostReplies(sone.get());
2202                 for (PostReply reply : sone.get().getReplies()) {
2203                         eventBus.post(new PostReplyRemovedEvent(reply));
2204                 }
2205                 synchronized (sones) {
2206                         sones.remove(identity.getId());
2207                 }
2208                 eventBus.post(new SoneRemovedEvent(sone.get()));
2209         }
2210
2211         /**
2212          * Deletes the temporary image.
2213          *
2214          * @param imageInsertFinishedEvent
2215          *            The event
2216          */
2217         @Subscribe
2218         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2219                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2220                 imageInsertFinishedEvent.image().setKey(imageInsertFinishedEvent.resultingUri().toString());
2221                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2222                 touchConfiguration();
2223         }
2224
2225 }