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

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