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 = parseProfileFromConfiguration(configuration, sone, sonePrefix);
1112
1113                 /* load posts. */
1114                 Set<Post> posts = new HashSet<Post>();
1115                 while (true) {
1116                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1117                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1118                         if (postId == null) {
1119                                 break;
1120                         }
1121                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1122                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1123                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1124                         if ((postTime == 0) || (postText == null)) {
1125                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1126                                 return;
1127                         }
1128                         PostBuilder postBuilder = postBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1129                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1130                                 postBuilder.to(postRecipientId);
1131                         }
1132                         posts.add(postBuilder.build());
1133                 }
1134
1135                 /* load replies. */
1136                 Set<PostReply> replies = new HashSet<PostReply>();
1137                 while (true) {
1138                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1139                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1140                         if (replyId == null) {
1141                                 break;
1142                         }
1143                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1144                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1145                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1146                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1147                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1148                                 return;
1149                         }
1150                         PostReplyBuilder postReplyBuilder = postReplyBuilder().withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1151                         replies.add(postReplyBuilder.build());
1152                 }
1153
1154                 /* load post likes. */
1155                 Set<String> likedPostIds = new HashSet<String>();
1156                 while (true) {
1157                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1158                         if (likedPostId == null) {
1159                                 break;
1160                         }
1161                         likedPostIds.add(likedPostId);
1162                 }
1163
1164                 /* load reply likes. */
1165                 Set<String> likedReplyIds = new HashSet<String>();
1166                 while (true) {
1167                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1168                         if (likedReplyId == null) {
1169                                 break;
1170                         }
1171                         likedReplyIds.add(likedReplyId);
1172                 }
1173
1174                 /* load friends. */
1175                 Set<String> friends = new HashSet<String>();
1176                 while (true) {
1177                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1178                         if (friendId == null) {
1179                                 break;
1180                         }
1181                         friends.add(friendId);
1182                 }
1183
1184                 /* load albums. */
1185                 List<Album> topLevelAlbums = new ArrayList<Album>();
1186                 int albumCounter = 0;
1187                 while (true) {
1188                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1189                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1190                         if (albumId == null) {
1191                                 break;
1192                         }
1193                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1194                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1195                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1196                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1197                         if ((albumTitle == null) || (albumDescription == null)) {
1198                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1199                                 return;
1200                         }
1201                         Album album = getOrCreateAlbum(albumId).setSone(sone).modify().setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId).update();
1202                         if (albumParentId != null) {
1203                                 Album parentAlbum = getAlbum(albumParentId, false);
1204                                 if (parentAlbum == null) {
1205                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1206                                         return;
1207                                 }
1208                                 parentAlbum.addAlbum(album);
1209                         } else {
1210                                 if (!topLevelAlbums.contains(album)) {
1211                                         topLevelAlbums.add(album);
1212                                 }
1213                         }
1214                 }
1215
1216                 /* load images. */
1217                 int imageCounter = 0;
1218                 while (true) {
1219                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1220                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1221                         if (imageId == null) {
1222                                 break;
1223                         }
1224                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1225                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1226                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1227                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1228                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1229                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1230                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1231                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1232                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1233                                 return;
1234                         }
1235                         Album album = getAlbum(albumId, false);
1236                         if (album == null) {
1237                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1238                                 return;
1239                         }
1240                         Image image = getImage(imageId).modify().setSone(sone).setCreationTime(creationTime).setKey(key).setTitle(title).setDescription(description).setWidth(width).setHeight(height).update();
1241                         album.addImage(image);
1242                 }
1243
1244                 /* load avatar. */
1245                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1246                 if (avatarId != null) {
1247                         profile.setAvatar(getImage(avatarId, false));
1248                 }
1249
1250                 /* load options. */
1251                 sone.getOptions().setAutoFollow(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1252                 sone.getOptions().setSoneInsertNotificationEnabled(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1253                 sone.getOptions().setShowNewSoneNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1254                 sone.getOptions().setShowNewPostNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1255                 sone.getOptions().setShowNewReplyNotifications(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1256                 sone.getOptions().setShowCustomAvatars(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1257
1258                 /* if we’re still here, Sone was loaded successfully. */
1259                 synchronized (sone) {
1260                         sone.setTime(soneTime);
1261                         sone.setProfile(profile);
1262                         sone.setPosts(posts);
1263                         sone.setReplies(replies);
1264                         sone.setLikePostIds(likedPostIds);
1265                         sone.setLikeReplyIds(likedReplyIds);
1266                         for (String friendId : friends) {
1267                                 followSone(sone, friendId);
1268                         }
1269                         for (Album album : sone.getRootAlbum().getAlbums()) {
1270                                 sone.getRootAlbum().removeAlbum(album);
1271                         }
1272                         for (Album album : topLevelAlbums) {
1273                                 sone.getRootAlbum().addAlbum(album);
1274                         }
1275                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1276                 }
1277                 synchronized (knownSones) {
1278                         for (String friend : friends) {
1279                                 knownSones.add(friend);
1280                         }
1281                 }
1282                 database.storePosts(sone, posts);
1283                 for (Post post : posts) {
1284                         post.setKnown(true);
1285                 }
1286                 database.storePostReplies(sone, replies);
1287                 for (PostReply reply : replies) {
1288                         reply.setKnown(true);
1289                 }
1290
1291                 logger.info(String.format("Sone loaded successfully: %s", sone));
1292         }
1293
1294         private static Profile parseProfileFromConfiguration(Configuration configuration, Sone sone, String sonePrefix) {
1295                 Profile profile = new Profile(sone);
1296                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1297                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1298                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1299                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1300                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1301                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1302
1303                 /* load profile fields. */
1304                 while (true) {
1305                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1306                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1307                         if (fieldName == null) {
1308                                 break;
1309                         }
1310                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1311                         profile.addField(fieldName).setValue(fieldValue);
1312                 }
1313
1314                 return profile;
1315         }
1316
1317         /**
1318          * Creates a new post.
1319          *
1320          * @param sone
1321          *            The Sone that creates the post
1322          * @param recipient
1323          *            The recipient Sone, or {@code null} if this post does not have
1324          *            a recipient
1325          * @param text
1326          *            The text of the post
1327          * @return The created post
1328          */
1329         public Post createPost(Sone sone, Optional<Sone> recipient, String text) {
1330                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1331         }
1332
1333         /**
1334          * Creates a new post.
1335          *
1336          * @param sone
1337          *            The Sone that creates the post
1338          * @param recipient
1339          *            The recipient Sone, or {@code null} if this post does not have
1340          *            a recipient
1341          * @param time
1342          *            The time of the post
1343          * @param text
1344          *            The text of the post
1345          * @return The created post
1346          */
1347         public Post createPost(Sone sone, Optional<Sone> recipient, long time, String text) {
1348                 checkNotNull(text, "text must not be null");
1349                 checkArgument(text.trim().length() > 0, "text must not be empty");
1350                 if (!sone.isLocal()) {
1351                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1352                         return null;
1353                 }
1354                 PostBuilder postBuilder = database.newPostBuilder();
1355                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1356                 if (recipient.isPresent()) {
1357                         postBuilder.to(recipient.get().getId());
1358                 }
1359                 final Post post = postBuilder.build();
1360                 database.storePost(post);
1361                 eventBus.post(new NewPostFoundEvent(post));
1362                 sone.addPost(post);
1363                 touchConfiguration();
1364                 localElementTicker.schedule(new MarkPostKnown(post), 10, TimeUnit.SECONDS);
1365                 return post;
1366         }
1367
1368         /**
1369          * Deletes the given post.
1370          *
1371          * @param post
1372          *            The post to delete
1373          */
1374         public void deletePost(Post post) {
1375                 if (!post.getSone().isLocal()) {
1376                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1377                         return;
1378                 }
1379                 database.removePost(post);
1380                 eventBus.post(new PostRemovedEvent(post));
1381                 markPostKnown(post);
1382                 touchConfiguration();
1383         }
1384
1385         /**
1386          * Marks the given post as known, if it is currently not a known post
1387          * (according to {@link Post#isKnown()}).
1388          *
1389          * @param post
1390          *            The post to mark as known
1391          */
1392         public void markPostKnown(Post post) {
1393                 post.setKnown(true);
1394                 eventBus.post(new MarkPostKnownEvent(post));
1395                 touchConfiguration();
1396                 for (PostReply reply : getReplies(post.getId())) {
1397                         markReplyKnown(reply);
1398                 }
1399         }
1400
1401         /**
1402          * Bookmarks the post with the given ID.
1403          *
1404          * @param id
1405          *            The ID of the post to bookmark
1406          */
1407         public void bookmarkPost(String id) {
1408                 synchronized (bookmarkedPosts) {
1409                         bookmarkedPosts.add(id);
1410                 }
1411         }
1412
1413         /**
1414          * Removes the given post from the bookmarks.
1415          *
1416          * @param post
1417          *            The post to unbookmark
1418          */
1419         public void unbookmark(Post post) {
1420                 unbookmarkPost(post.getId());
1421         }
1422
1423         /**
1424          * Removes the post with the given ID from the bookmarks.
1425          *
1426          * @param id
1427          *            The ID of the post to unbookmark
1428          */
1429         public void unbookmarkPost(String id) {
1430                 synchronized (bookmarkedPosts) {
1431                         bookmarkedPosts.remove(id);
1432                 }
1433         }
1434
1435         /**
1436          * Creates a new reply.
1437          *
1438          * @param sone
1439          *            The Sone that creates the reply
1440          * @param post
1441          *            The post that this reply refers to
1442          * @param text
1443          *            The text of the reply
1444          * @return The created reply
1445          */
1446         public PostReply createReply(Sone sone, Post post, String text) {
1447                 checkNotNull(text, "text must not be null");
1448                 checkArgument(text.trim().length() > 0, "text must not be empty");
1449                 if (!sone.isLocal()) {
1450                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1451                         return null;
1452                 }
1453                 PostReplyBuilder postReplyBuilder = postReplyBuilder();
1454                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1455                 final PostReply reply = postReplyBuilder.build();
1456                 database.storePostReply(reply);
1457                 eventBus.post(new NewPostReplyFoundEvent(reply));
1458                 sone.addReply(reply);
1459                 touchConfiguration();
1460                 localElementTicker.schedule(new MarkReplyKnown(reply), 10, TimeUnit.SECONDS);
1461                 return reply;
1462         }
1463
1464         /**
1465          * Deletes the given reply.
1466          *
1467          * @param reply
1468          *            The reply to delete
1469          */
1470         public void deleteReply(PostReply reply) {
1471                 Sone sone = reply.getSone();
1472                 if (!sone.isLocal()) {
1473                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1474                         return;
1475                 }
1476                 database.removePostReply(reply);
1477                 markReplyKnown(reply);
1478                 sone.removeReply(reply);
1479                 touchConfiguration();
1480         }
1481
1482         /**
1483          * Marks the given reply as known, if it is currently not a known reply
1484          * (according to {@link Reply#isKnown()}).
1485          *
1486          * @param reply
1487          *            The reply to mark as known
1488          */
1489         public void markReplyKnown(PostReply reply) {
1490                 boolean previouslyKnown = reply.isKnown();
1491                 reply.setKnown(true);
1492                 eventBus.post(new MarkPostReplyKnownEvent(reply));
1493                 if (!previouslyKnown) {
1494                         touchConfiguration();
1495                 }
1496         }
1497
1498         /**
1499          * Creates a new album for the given Sone.
1500          *
1501          * @param sone
1502          *            The Sone to create the album for
1503          * @param parent
1504          *            The parent of the album (may be {@code null} to create a
1505          *            top-level album)
1506          * @return The new album
1507          */
1508         public Album createAlbum(Sone sone, Album parent) {
1509                 Album album = database.newAlbumBuilder().randomId().build();
1510                 database.storeAlbum(album);
1511                 album.setSone(sone);
1512                 parent.addAlbum(album);
1513                 return album;
1514         }
1515
1516         /**
1517          * Deletes the given album. The owner of the album has to be a local Sone,
1518          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1519          *
1520          * @param album
1521          *            The album to remove
1522          */
1523         public void deleteAlbum(Album album) {
1524                 checkNotNull(album, "album must not be null");
1525                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1526                 if (!album.isEmpty()) {
1527                         return;
1528                 }
1529                 album.getParent().removeAlbum(album);
1530                 database.removeAlbum(album);
1531                 touchConfiguration();
1532         }
1533
1534         /**
1535          * Creates a new image.
1536          *
1537          * @param sone
1538          *            The Sone creating the image
1539          * @param album
1540          *            The album the image will be inserted into
1541          * @param temporaryImage
1542          *            The temporary image to create the image from
1543          * @return The newly created image
1544          */
1545         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1546                 checkNotNull(sone, "sone must not be null");
1547                 checkNotNull(album, "album must not be null");
1548                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1549                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1550                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1551                 Image image = database.newImageBuilder().withId(temporaryImage.getId()).build().modify().setSone(sone).setCreationTime(System.currentTimeMillis()).update();
1552                 album.addImage(image);
1553                 database.storeImage(image);
1554                 imageInserter.insertImage(temporaryImage, image);
1555                 return image;
1556         }
1557
1558         /**
1559          * Deletes the given image. This method will also delete a matching
1560          * temporary image.
1561          *
1562          * @see #deleteTemporaryImage(String)
1563          * @param image
1564          *            The image to delete
1565          */
1566         public void deleteImage(Image image) {
1567                 checkNotNull(image, "image must not be null");
1568                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1569                 deleteTemporaryImage(image.getId());
1570                 image.getAlbum().removeImage(image);
1571                 database.removeImage(image);
1572                 touchConfiguration();
1573         }
1574
1575         /**
1576          * Creates a new temporary image.
1577          *
1578          * @param mimeType
1579          *            The MIME type of the temporary image
1580          * @param imageData
1581          *            The encoded data of the image
1582          * @return The temporary image
1583          */
1584         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1585                 TemporaryImage temporaryImage = new TemporaryImage();
1586                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1587                 synchronized (temporaryImages) {
1588                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1589                 }
1590                 return temporaryImage;
1591         }
1592
1593         /**
1594          * Deletes the temporary image with the given ID.
1595          *
1596          * @param imageId
1597          *            The ID of the temporary image to delete
1598          */
1599         public void deleteTemporaryImage(String imageId) {
1600                 checkNotNull(imageId, "imageId must not be null");
1601                 synchronized (temporaryImages) {
1602                         temporaryImages.remove(imageId);
1603                 }
1604                 Image image = getImage(imageId, false);
1605                 if (image != null) {
1606                         imageInserter.cancelImageInsert(image);
1607                 }
1608         }
1609
1610         /**
1611          * Notifies the core that the configuration, either of the core or of a
1612          * single local Sone, has changed, and that the configuration should be
1613          * saved.
1614          */
1615         public void touchConfiguration() {
1616                 lastConfigurationUpdate = System.currentTimeMillis();
1617         }
1618
1619         //
1620         // SERVICE METHODS
1621         //
1622
1623         /**
1624          * Starts the core.
1625          */
1626         @Override
1627         public void serviceStart() {
1628                 loadConfiguration();
1629                 updateChecker.start();
1630                 identityManager.start();
1631                 webOfTrustUpdater.init();
1632                 webOfTrustUpdater.start();
1633                 database.start();
1634         }
1635
1636         /**
1637          * {@inheritDoc}
1638          */
1639         @Override
1640         public void serviceRun() {
1641                 long lastSaved = System.currentTimeMillis();
1642                 while (!shouldStop()) {
1643                         sleep(1000);
1644                         long now = System.currentTimeMillis();
1645                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1646                                 for (Sone localSone : getLocalSones()) {
1647                                         saveSone(localSone);
1648                                 }
1649                                 saveConfiguration();
1650                                 lastSaved = now;
1651                         }
1652                 }
1653         }
1654
1655         /**
1656          * Stops the core.
1657          */
1658         @Override
1659         public void serviceStop() {
1660                 localElementTicker.shutdownNow();
1661                 synchronized (sones) {
1662                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1663                                 soneInserter.getValue().stop();
1664                                 saveSone(getLocalSone(soneInserter.getKey().getId(), false));
1665                         }
1666                 }
1667                 saveConfiguration();
1668                 database.stop();
1669                 webOfTrustUpdater.stop();
1670                 updateChecker.stop();
1671                 soneDownloader.stop();
1672                 soneDownloaders.shutdown();
1673                 identityManager.stop();
1674         }
1675
1676         //
1677         // PRIVATE METHODS
1678         //
1679
1680         /**
1681          * Saves the given Sone. This will persist all local settings for the given
1682          * Sone, such as the friends list and similar, private options.
1683          *
1684          * @param sone
1685          *            The Sone to save
1686          */
1687         private synchronized void saveSone(Sone sone) {
1688                 if (!sone.isLocal()) {
1689                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1690                         return;
1691                 }
1692                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1693                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1694                         return;
1695                 }
1696
1697                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1698                 try {
1699                         /* save Sone into configuration. */
1700                         String sonePrefix = "Sone/" + sone.getId();
1701                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1702                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1703
1704                         /* save profile. */
1705                         Profile profile = sone.getProfile();
1706                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1707                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1708                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1709                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1710                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1711                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1712                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1713
1714                         /* save profile fields. */
1715                         int fieldCounter = 0;
1716                         for (Field profileField : profile.getFields()) {
1717                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1718                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1719                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1720                         }
1721                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1722
1723                         /* save posts. */
1724                         int postCounter = 0;
1725                         for (Post post : sone.getPosts()) {
1726                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1727                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1728                                 configuration.getStringValue(postPrefix + "/Recipient").setValue(post.getRecipientId().orNull());
1729                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1730                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1731                         }
1732                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1733
1734                         /* save replies. */
1735                         int replyCounter = 0;
1736                         for (PostReply reply : sone.getReplies()) {
1737                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1738                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1739                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPostId());
1740                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1741                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1742                         }
1743                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1744
1745                         /* save post likes. */
1746                         int postLikeCounter = 0;
1747                         for (String postId : sone.getLikedPostIds()) {
1748                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1749                         }
1750                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1751
1752                         /* save reply likes. */
1753                         int replyLikeCounter = 0;
1754                         for (String replyId : sone.getLikedReplyIds()) {
1755                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1756                         }
1757                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1758
1759                         /* save friends. */
1760                         int friendCounter = 0;
1761                         for (String friendId : sone.getFriends()) {
1762                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1763                         }
1764                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1765
1766                         /* save albums. first, collect in a flat structure, top-level first. */
1767                         List<Album> albums = FluentIterable.from(sone.getRootAlbum().getAlbums()).transformAndConcat(Album.FLATTENER).toList();
1768
1769                         int albumCounter = 0;
1770                         for (Album album : albums) {
1771                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1772                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1773                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1774                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1775                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent().equals(sone.getRootAlbum()) ? null : album.getParent().getId());
1776                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1777                         }
1778                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1779
1780                         /* save images. */
1781                         int imageCounter = 0;
1782                         for (Album album : albums) {
1783                                 for (Image image : album.getImages()) {
1784                                         if (!image.isInserted()) {
1785                                                 continue;
1786                                         }
1787                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1788                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1789                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1790                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
1791                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
1792                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
1793                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
1794                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
1795                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
1796                                 }
1797                         }
1798                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
1799
1800                         /* save options. */
1801                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().isAutoFollow());
1802                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().isSoneInsertNotificationEnabled());
1803                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().isShowNewSoneNotifications());
1804                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().isShowNewPostNotifications());
1805                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().isShowNewReplyNotifications());
1806                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().getShowCustomAvatars().name());
1807
1808                         configuration.save();
1809
1810                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
1811
1812                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
1813                 } catch (ConfigurationException ce1) {
1814                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
1815                 }
1816         }
1817
1818         /**
1819          * Saves the current options.
1820          */
1821         private void saveConfiguration() {
1822                 synchronized (configuration) {
1823                         if (storingConfiguration) {
1824                                 logger.log(Level.FINE, "Already storing configuration…");
1825                                 return;
1826                         }
1827                         storingConfiguration = true;
1828                 }
1829
1830                 /* store the options first. */
1831                 try {
1832                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
1833                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
1834                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
1835                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
1836                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
1837                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
1838                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
1839                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
1840                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
1841                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
1842                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
1843                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
1844
1845                         /* save known Sones. */
1846                         int soneCounter = 0;
1847                         synchronized (knownSones) {
1848                                 for (String knownSoneId : knownSones) {
1849                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
1850                                 }
1851                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
1852                         }
1853
1854                         /* save Sone following times. */
1855                         soneCounter = 0;
1856                         synchronized (soneFollowingTimes) {
1857                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
1858                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
1859                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
1860                                         ++soneCounter;
1861                                 }
1862                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
1863                         }
1864
1865                         /* save known posts. */
1866                         database.save();
1867
1868                         /* save bookmarked posts. */
1869                         int bookmarkedPostCounter = 0;
1870                         synchronized (bookmarkedPosts) {
1871                                 for (String bookmarkedPostId : bookmarkedPosts) {
1872                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
1873                                 }
1874                         }
1875                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
1876
1877                         /* now save it. */
1878                         configuration.save();
1879
1880                 } catch (ConfigurationException ce1) {
1881                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
1882                 } catch (DatabaseException de1) {
1883                         logger.log(Level.SEVERE, "Could not save database!", de1);
1884                 } finally {
1885                         synchronized (configuration) {
1886                                 storingConfiguration = false;
1887                         }
1888                 }
1889         }
1890
1891         /**
1892          * Loads the configuration.
1893          */
1894         private void loadConfiguration() {
1895                 /* create options. */
1896                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new SetInsertionDelay()));
1897                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1898                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
1899                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1900                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
1901                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
1902                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
1903                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
1904                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
1905                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, fcpInterface.new SetActive()));
1906                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, fcpInterface.new SetFullAccessRequired()));
1907
1908                 loadConfigurationValue("InsertionDelay");
1909                 loadConfigurationValue("PostsPerPage");
1910                 loadConfigurationValue("ImagesPerPage");
1911                 loadConfigurationValue("CharactersPerPost");
1912                 loadConfigurationValue("PostCutOffLength");
1913                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
1914                 loadConfigurationValue("PositiveTrust");
1915                 loadConfigurationValue("NegativeTrust");
1916                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
1917                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
1918                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
1919
1920                 /* load known Sones. */
1921                 int soneCounter = 0;
1922                 while (true) {
1923                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
1924                         if (knownSoneId == null) {
1925                                 break;
1926                         }
1927                         synchronized (knownSones) {
1928                                 knownSones.add(knownSoneId);
1929                         }
1930                 }
1931
1932                 /* load Sone following times. */
1933                 soneCounter = 0;
1934                 while (true) {
1935                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
1936                         if (soneId == null) {
1937                                 break;
1938                         }
1939                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
1940                         synchronized (soneFollowingTimes) {
1941                                 soneFollowingTimes.put(soneId, time);
1942                         }
1943                         ++soneCounter;
1944                 }
1945
1946                 /* load bookmarked posts. */
1947                 int bookmarkedPostCounter = 0;
1948                 while (true) {
1949                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
1950                         if (bookmarkedPostId == null) {
1951                                 break;
1952                         }
1953                         synchronized (bookmarkedPosts) {
1954                                 bookmarkedPosts.add(bookmarkedPostId);
1955                         }
1956                 }
1957
1958         }
1959
1960         /**
1961          * Loads an {@link Integer} configuration value for the option with the
1962          * given name, logging validation failures.
1963          *
1964          * @param optionName
1965          *            The name of the option to load
1966          */
1967         private void loadConfigurationValue(String optionName) {
1968                 try {
1969                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
1970                 } catch (IllegalArgumentException iae1) {
1971                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
1972                 }
1973         }
1974
1975         /**
1976          * Notifies the core that a new {@link OwnIdentity} was added.
1977          *
1978          * @param ownIdentityAddedEvent
1979          *            The event
1980          */
1981         @Subscribe
1982         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
1983                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
1984                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
1985                 if (ownIdentity.hasContext("Sone")) {
1986                         addLocalSone(ownIdentity);
1987                 }
1988         }
1989
1990         /**
1991          * Notifies the core that an {@link OwnIdentity} was removed.
1992          *
1993          * @param ownIdentityRemovedEvent
1994          *            The event
1995          */
1996         @Subscribe
1997         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
1998                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
1999                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2000                 trustedIdentities.removeAll(ownIdentity);
2001         }
2002
2003         /**
2004          * Notifies the core that a new {@link Identity} was added.
2005          *
2006          * @param identityAddedEvent
2007          *            The event
2008          */
2009         @Subscribe
2010         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2011                 Identity identity = identityAddedEvent.identity();
2012                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2013                 trustedIdentities.put(identityAddedEvent.ownIdentity(), identity);
2014                 addRemoteSone(identity);
2015         }
2016
2017         /**
2018          * Notifies the core that an {@link Identity} was updated.
2019          *
2020          * @param identityUpdatedEvent
2021          *            The event
2022          */
2023         @Subscribe
2024         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2025                 Identity identity = identityUpdatedEvent.identity();
2026                 final Sone sone = getRemoteSone(identity.getId(), false);
2027                 if (sone.isLocal()) {
2028                         return;
2029                 }
2030                 sone.setIdentity(identity);
2031                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2032                 soneDownloader.addSone(sone);
2033                 soneDownloaders.execute(soneDownloader.fetchSoneAction(sone));
2034         }
2035
2036         /**
2037          * Notifies the core that an {@link Identity} was removed.
2038          *
2039          * @param identityRemovedEvent
2040          *            The event
2041          */
2042         @Subscribe
2043         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2044                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2045                 Identity identity = identityRemovedEvent.identity();
2046                 trustedIdentities.remove(ownIdentity, identity);
2047                 boolean foundIdentity = false;
2048                 for (Entry<OwnIdentity, Collection<Identity>> trustedIdentity : trustedIdentities.asMap().entrySet()) {
2049                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2050                                 continue;
2051                         }
2052                         if (trustedIdentity.getValue().contains(identity)) {
2053                                 foundIdentity = true;
2054                         }
2055                 }
2056                 if (foundIdentity) {
2057                         /* some local identity still trusts this identity, don’t remove. */
2058                         return;
2059                 }
2060                 Optional<Sone> sone = getSone(identity.getId());
2061                 if (!sone.isPresent()) {
2062                         /* TODO - we don’t have the Sone anymore. should this happen? */
2063                         return;
2064                 }
2065                 database.removePosts(sone.get());
2066                 for (Post post : sone.get().getPosts()) {
2067                         eventBus.post(new PostRemovedEvent(post));
2068                 }
2069                 database.removePostReplies(sone.get());
2070                 for (PostReply reply : sone.get().getReplies()) {
2071                         eventBus.post(new PostReplyRemovedEvent(reply));
2072                 }
2073                 synchronized (sones) {
2074                         sones.remove(identity.getId());
2075                 }
2076                 eventBus.post(new SoneRemovedEvent(sone.get()));
2077         }
2078
2079         /**
2080          * Deletes the temporary image.
2081          *
2082          * @param imageInsertFinishedEvent
2083          *            The event
2084          */
2085         @Subscribe
2086         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2087                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2088                 imageInsertFinishedEvent.image().modify().setKey(imageInsertFinishedEvent.resultingUri().toString()).update();
2089                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2090                 touchConfiguration();
2091         }
2092
2093         @VisibleForTesting
2094         class MarkPostKnown implements Runnable {
2095
2096                 private final Post post;
2097
2098                 public MarkPostKnown(Post post) {
2099                         this.post = post;
2100                 }
2101
2102                 @Override
2103                 public void run() {
2104                         markPostKnown(post);
2105                 }
2106
2107         }
2108
2109         @VisibleForTesting
2110         class MarkReplyKnown implements Runnable {
2111
2112                 private final PostReply postReply;
2113
2114                 public MarkReplyKnown(PostReply postReply) {
2115                         this.postReply = postReply;
2116                 }
2117
2118                 @Override
2119                 public void run() {
2120                         markReplyKnown(postReply);
2121                 }
2122
2123         }
2124
2125 }