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

   1 /*
   2  * Sone - Core.java - Copyright © 2010–2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.core;
  19
  20 import static com.google.common.base.Preconditions.checkArgument;
  21 import static com.google.common.base.Preconditions.checkNotNull;
  22
  23 import java.net.MalformedURLException;
  24 import java.util.ArrayList;
  25 import java.util.Collection;
  26 import java.util.Collections;
  27 import java.util.HashMap;
  28 import java.util.HashSet;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Map.Entry;
  32 import java.util.Set;
  33 import java.util.concurrent.ExecutorService;
  34 import java.util.concurrent.Executors;
  35 import java.util.concurrent.ScheduledExecutorService;
  36 import java.util.concurrent.TimeUnit;
  37 import java.util.logging.Level;
  38 import java.util.logging.Logger;
  39
  40 import net.pterodactylus.sone.core.Options.DefaultOption;
  41 import net.pterodactylus.sone.core.Options.Option;
  42 import net.pterodactylus.sone.core.Options.OptionWatcher;
  43 import net.pterodactylus.sone.core.event.ImageInsertFinishedEvent;
  44 import net.pterodactylus.sone.core.event.MarkPostKnownEvent;
  45 import net.pterodactylus.sone.core.event.MarkPostReplyKnownEvent;
  46 import net.pterodactylus.sone.core.event.MarkSoneKnownEvent;
  47 import net.pterodactylus.sone.core.event.NewPostFoundEvent;
  48 import net.pterodactylus.sone.core.event.NewPostReplyFoundEvent;
  49 import net.pterodactylus.sone.core.event.NewSoneFoundEvent;
  50 import net.pterodactylus.sone.core.event.PostRemovedEvent;
  51 import net.pterodactylus.sone.core.event.PostReplyRemovedEvent;
  52 import net.pterodactylus.sone.core.event.SoneLockedEvent;
  53 import net.pterodactylus.sone.core.event.SoneRemovedEvent;
  54 import net.pterodactylus.sone.core.event.SoneUnlockedEvent;
  55 import net.pterodactylus.sone.data.Album;
  56 import net.pterodactylus.sone.data.Client;
  57 import net.pterodactylus.sone.data.Image;
  58 import net.pterodactylus.sone.data.Post;
  59 import net.pterodactylus.sone.data.PostBuilder;
  60 import net.pterodactylus.sone.data.PostBuilderFactory;
  61 import net.pterodactylus.sone.data.PostReply;
  62 import net.pterodactylus.sone.data.PostReplyBuilder;
  63 import net.pterodactylus.sone.data.PostReplyBuilderFactory;
  64 import net.pterodactylus.sone.data.Profile;
  65 import net.pterodactylus.sone.data.Profile.Field;
  66 import net.pterodactylus.sone.data.Reply;
  67 import net.pterodactylus.sone.data.Sone;
  68 import net.pterodactylus.sone.data.Sone.ShowCustomAvatars;
  69 import net.pterodactylus.sone.data.Sone.SoneStatus;
  70 import net.pterodactylus.sone.data.TemporaryImage;
  71 import net.pterodactylus.sone.fcp.FcpInterface;
  72 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  73 import net.pterodactylus.sone.freenet.wot.Identity;
  74 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  75 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  76 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  77 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  78 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  79 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  81 import net.pterodactylus.sone.main.SonePlugin;
  82 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  83 import net.pterodactylus.util.config.Configuration;
  84 import net.pterodactylus.util.config.ConfigurationException;
  85 import net.pterodactylus.util.logging.Logging;
  86 import net.pterodactylus.util.number.Numbers;
  87 import net.pterodactylus.util.service.AbstractService;
  88 import net.pterodactylus.util.thread.NamedThreadFactory;
  89
  90 import com.google.common.base.Predicate;
  91 import com.google.common.base.Predicates;
  92 import com.google.common.collect.Collections2;
  93 import com.google.common.eventbus.EventBus;
  94 import com.google.common.eventbus.Subscribe;
  95 import com.google.inject.Inject;
  96
  97 import freenet.keys.FreenetURI;
  98
  99 /**
 100  * The Sone core.
 101  *
 102  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 103  */
 104 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 105
 106         /** The logger. */
 107         private static final Logger logger = Logging.getLogger(Core.class);
 108
 109         /** The start time. */
 110         private final long startupTime = System.currentTimeMillis();
 111
 112         /** The options. */
 113         private final Options options = new Options();
 114
 115         /** The preferences. */
 116         private final Preferences preferences = new Preferences(options);
 117
 118         /** The event bus. */
 119         private final EventBus eventBus;
 120
 121         /** The configuration. */
 122         private Configuration configuration;
 123
 124         /** Whether we’re currently saving the configuration. */
 125         private boolean storingConfiguration = false;
 126
 127         /** The identity manager. */
 128         private final IdentityManager identityManager;
 129
 130         /** Interface to freenet. */
 131         private final FreenetInterface freenetInterface;
 132
 133         /** The Sone downloader. */
 134         private final SoneDownloader soneDownloader;
 135
 136         /** The image inserter. */
 137         private final ImageInserter imageInserter;
 138
 139         /** Sone downloader thread-pool. */
 140         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 141
 142         /** The update checker. */
 143         private final UpdateChecker updateChecker;
 144
 145         /** The trust updater. */
 146         private final WebOfTrustUpdater webOfTrustUpdater;
 147
 148         /** The FCP interface. */
 149         private volatile FcpInterface fcpInterface;
 150
 151         /** The times Sones were followed. */
 152         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 153
 154         /** Locked local Sones. */
 155         /* synchronize on itself. */
 156         private final Set<Sone> lockedSones = new HashSet<Sone>();
 157
 158         /** Sone inserters. */
 159         /* synchronize access on this on sones. */
 160         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 161
 162         /** Sone rescuers. */
 163         /* synchronize access on this on sones. */
 164         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 165
 166         /** All Sones. */
 167         /* synchronize access on this on itself. */
 168         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 169
 170         /** All known Sones. */
 171         private final Set<String> knownSones = new HashSet<String>();
 172
 173         /** The post builder. */
 174         private final PostBuilderFactory postBuilderFactory;
 175
 176         /** All posts. */
 177         private final Map<String, Post> posts = new HashMap<String, Post>();
 178
 179         /** All known posts. */
 180         private final Set<String> knownPosts = new HashSet<String>();
 181
 182         /** The post reply builder factory. */
 183         private final PostReplyBuilderFactory postReplyBuilderFactory;
 184
 185         /** All replies. */
 186         private final Map<String, PostReply> replies = new HashMap<String, PostReply>();
 187
 188         /** All known replies. */
 189         private final Set<String> knownReplies = new HashSet<String>();
 190
 191         /** All bookmarked posts. */
 192         /* synchronize access on itself. */
 193         private final Set<String> bookmarkedPosts = new HashSet<String>();
 194
 195         /** Trusted identities, sorted by own identities. */
 196         private final Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 197
 198         /** All known albums. */
 199         private final Map<String, Album> albums = new HashMap<String, Album>();
 200
 201         /** All known images. */
 202         private final Map<String, Image> images = new HashMap<String, Image>();
 203
 204         /** All temporary images. */
 205         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 206
 207         /** Ticker for threads that mark own elements as known. */
 208         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 209
 210         /** The time the configuration was last touched. */
 211         private volatile long lastConfigurationUpdate;
 212
 213         /**
 214          * Creates a new core.
 215          *
 216          * @param configuration
 217          *            The configuration of the core
 218          * @param freenetInterface
 219          *            The freenet interface
 220          * @param identityManager
 221          *            The identity manager
 222          * @param webOfTrustUpdater
 223          *            The WebOfTrust updater
 224          * @param eventBus
 225          *            The event bus
 226          * @param postBuilderFactory
 227          *            The post builder
 228          * @param postReplyBuilderFactory
 229          *            The post reply builder factory
 230          */
 231         @Inject
 232         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, PostBuilderFactory postBuilderFactory, PostReplyBuilderFactory postReplyBuilderFactory) {
 233                 super("Sone Core");
 234                 this.configuration = configuration;
 235                 this.freenetInterface = freenetInterface;
 236                 this.identityManager = identityManager;
 237                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 238                 this.imageInserter = new ImageInserter(freenetInterface);
 239                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 240                 this.webOfTrustUpdater = webOfTrustUpdater;
 241                 this.eventBus = eventBus;
 242                 this.postBuilderFactory = postBuilderFactory;
 243                 this.postReplyBuilderFactory = postReplyBuilderFactory;
 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          * Sets the configuration to use. This will automatically save the current
 261          * configuration to the given configuration.
 262          *
 263          * @param configuration
 264          *            The new configuration to use
 265          */
 266         public void setConfiguration(Configuration configuration) {
 267                 this.configuration = configuration;
 268                 touchConfiguration();
 269         }
 270
 271         /**
 272          * Returns the options used by the core.
 273          *
 274          * @return The options of the core
 275          */
 276         public Preferences getPreferences() {
 277                 return preferences;
 278         }
 279
 280         /**
 281          * Returns the identity manager used by the core.
 282          *
 283          * @return The identity manager
 284          */
 285         public IdentityManager getIdentityManager() {
 286                 return identityManager;
 287         }
 288
 289         /**
 290          * Returns the update checker.
 291          *
 292          * @return The update checker
 293          */
 294         public UpdateChecker getUpdateChecker() {
 295                 return updateChecker;
 296         }
 297
 298         /**
 299          * Sets the FCP interface to use.
 300          *
 301          * @param fcpInterface
 302          *            The FCP interface to use
 303          */
 304         public void setFcpInterface(FcpInterface fcpInterface) {
 305                 this.fcpInterface = fcpInterface;
 306         }
 307
 308         /**
 309          * Returns the Sone rescuer for the given local Sone.
 310          *
 311          * @param sone
 312          *            The local Sone to get the rescuer for
 313          * @return The Sone rescuer for the given Sone
 314          */
 315         public SoneRescuer getSoneRescuer(Sone sone) {
 316                 checkNotNull(sone, "sone must not be null");
 317                 checkArgument(sone.isLocal(), "sone must be local");
 318                 synchronized (sones) {
 319                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 320                         if (soneRescuer == null) {
 321                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 322                                 soneRescuers.put(sone, soneRescuer);
 323                                 soneRescuer.start();
 324                         }
 325                         return soneRescuer;
 326                 }
 327         }
 328
 329         /**
 330          * Returns whether the given Sone is currently locked.
 331          *
 332          * @param sone
 333          *            The sone to check
 334          * @return {@code true} if the Sone is locked, {@code false} if it is not
 335          */
 336         public boolean isLocked(Sone sone) {
 337                 synchronized (lockedSones) {
 338                         return lockedSones.contains(sone);
 339                 }
 340         }
 341
 342         /**
 343          * Returns all Sones, remote and local.
 344          *
 345          * @return All Sones
 346          */
 347         public Set<Sone> getSones() {
 348                 return new HashSet<Sone>(sones.values());
 349         }
 350
 351         /**
 352          * Returns the Sone with the given ID, regardless whether it’s local or
 353          * remote.
 354          *
 355          * @param id
 356          *            The ID of the Sone to get
 357          * @return The Sone with the given ID, or {@code null} if there is no such
 358          *         Sone
 359          */
 360         public Sone getSone(String id) {
 361                 return getSone(id, true);
 362         }
 363
 364         /**
 365          * Returns the Sone with the given ID, regardless whether it’s local or
 366          * remote.
 367          *
 368          * @param id
 369          *            The ID of the Sone to get
 370          * @param create
 371          *            {@code true} to create a new Sone if none exists,
 372          *            {@code false} to return {@code null} if a Sone with the given
 373          *            ID does not exist
 374          * @return The Sone with the given ID, or {@code null} if there is no such
 375          *         Sone
 376          */
 377         @Override
 378         public Sone getSone(String id, boolean create) {
 379                 synchronized (sones) {
 380                         if (!sones.containsKey(id) && create) {
 381                                 Sone sone = new Sone(id, false);
 382                                 sones.put(id, sone);
 383                         }
 384                         return sones.get(id);
 385                 }
 386         }
 387
 388         /**
 389          * Checks whether the core knows a Sone with the given ID.
 390          *
 391          * @param id
 392          *            The ID of the Sone
 393          * @return {@code true} if there is a Sone with the given ID, {@code false}
 394          *         otherwise
 395          */
 396         public boolean hasSone(String id) {
 397                 synchronized (sones) {
 398                         return sones.containsKey(id);
 399                 }
 400         }
 401
 402         /**
 403          * Returns all local Sones.
 404          *
 405          * @return All local Sones
 406          */
 407         public Collection<Sone> getLocalSones() {
 408                 synchronized (sones) {
 409                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 410
 411                                 @Override
 412                                 public boolean apply(Sone sone) {
 413                                         return sone.isLocal();
 414                                 }
 415                         });
 416                 }
 417         }
 418
 419         /**
 420          * Returns the local Sone with the given ID, optionally creating a new Sone.
 421          *
 422          * @param id
 423          *            The ID of the Sone
 424          * @param create
 425          *            {@code true} to create a new Sone if none exists,
 426          *            {@code false} to return null if none exists
 427          * @return The Sone with the given ID, or {@code null}
 428          */
 429         public Sone getLocalSone(String id, boolean create) {
 430                 synchronized (sones) {
 431                         Sone sone = sones.get(id);
 432                         if ((sone == null) && create) {
 433                                 sone = new Sone(id, true);
 434                                 sones.put(id, sone);
 435                         }
 436                         if ((sone != null) && !sone.isLocal()) {
 437                                 sone = new Sone(id, true);
 438                                 sones.put(id, sone);
 439                         }
 440                         return sone;
 441                 }
 442         }
 443
 444         /**
 445          * Returns all remote Sones.
 446          *
 447          * @return All remote Sones
 448          */
 449         public Collection<Sone> getRemoteSones() {
 450                 synchronized (sones) {
 451                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 452
 453                                 @Override
 454                                 public boolean apply(Sone sone) {
 455                                         return !sone.isLocal();
 456                                 }
 457                         });
 458                 }
 459         }
 460
 461         /**
 462          * Returns the remote Sone with the given ID.
 463          *
 464          * @param id
 465          *            The ID of the remote Sone to get
 466          * @param create
 467          *            {@code true} to always create a Sone, {@code false} to return
 468          *            {@code null} if no Sone with the given ID exists
 469          * @return The Sone with the given ID
 470          */
 471         public Sone getRemoteSone(String id, boolean create) {
 472                 synchronized (sones) {
 473                         Sone sone = sones.get(id);
 474                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 475                                 sone = new Sone(id, false);
 476                                 sones.put(id, sone);
 477                         }
 478                         return sone;
 479                 }
 480         }
 481
 482         /**
 483          * Returns whether the given Sone has been modified.
 484          *
 485          * @param sone
 486          *            The Sone to check for modifications
 487          * @return {@code true} if a modification has been detected in the Sone,
 488          *         {@code false} otherwise
 489          */
 490         public boolean isModifiedSone(Sone sone) {
 491                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 492         }
 493
 494         /**
 495          * Returns the time when the given was first followed by any local Sone.
 496          *
 497          * @param sone
 498          *            The Sone to get the time for
 499          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 500          *         been followed, or {@link Long#MAX_VALUE}
 501          */
 502         public long getSoneFollowingTime(Sone sone) {
 503                 synchronized (soneFollowingTimes) {
 504                         if (soneFollowingTimes.containsKey(sone)) {
 505                                 return soneFollowingTimes.get(sone);
 506                         }
 507                         return Long.MAX_VALUE;
 508                 }
 509         }
 510
 511         /**
 512          * Returns whether the target Sone is trusted by the origin Sone.
 513          *
 514          * @param origin
 515          *            The origin Sone
 516          * @param target
 517          *            The target Sone
 518          * @return {@code true} if the target Sone is trusted by the origin Sone
 519          */
 520         public boolean isSoneTrusted(Sone origin, Sone target) {
 521                 checkNotNull(origin, "origin must not be null");
 522                 checkNotNull(target, "target must not be null");
 523                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 524                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 525         }
 526
 527         /**
 528          * Returns a post builder.
 529          *
 530          * @return A new post builder
 531          */
 532         public PostBuilder postBuilder() {
 533                 return postBuilderFactory.newPostBuilder();
 534         }
 535
 536         /**
 537          * {@inheritDoc}
 538          */
 539         @Override
 540         public Post getPost(String postId) {
 541                 synchronized (posts) {
 542                         return posts.get(postId);
 543                 }
 544         }
 545
 546         /**
 547          * Returns all posts that have the given Sone as recipient.
 548          *
 549          * @see Post#getRecipient()
 550          * @param recipient
 551          *            The recipient of the posts
 552          * @return All posts that have the given Sone as recipient
 553          */
 554         public Set<Post> getDirectedPosts(Sone recipient) {
 555                 checkNotNull(recipient, "recipient must not be null");
 556                 Set<Post> directedPosts = new HashSet<Post>();
 557                 synchronized (posts) {
 558                         for (Post post : posts.values()) {
 559                                 if (recipient.equals(post.getRecipient())) {
 560                                         directedPosts.add(post);
 561                                 }
 562                         }
 563                 }
 564                 return directedPosts;
 565         }
 566
 567         /**
 568          * Returns a post reply builder.
 569          *
 570          * @return A new post reply builder
 571          */
 572         public PostReplyBuilder postReplyBuilder() {
 573                 return postReplyBuilderFactory.newPostReplyBuilder();
 574         }
 575
 576         /**
 577          * {@inheritDoc}
 578          */
 579         @Override
 580         public PostReply getPostReply(String replyId) {
 581                 synchronized (replies) {
 582                         return replies.get(replyId);
 583                 }
 584         }
 585
 586         /**
 587          * {@inheritDoc}
 588          */
 589         @Override
 590         public List<PostReply> getReplies(Post post) {
 591                 Set<Sone> sones = getSones();
 592                 List<PostReply> replies = new ArrayList<PostReply>();
 593                 for (Sone sone : sones) {
 594                         for (PostReply reply : sone.getReplies()) {
 595                                 if (reply.getPost().equals(post)) {
 596                                         replies.add(reply);
 597                                 }
 598                         }
 599                 }
 600                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 601                 return replies;
 602         }
 603
 604         /**
 605          * Returns all Sones that have liked the given post.
 606          *
 607          * @param post
 608          *            The post to get the liking Sones for
 609          * @return The Sones that like the given post
 610          */
 611         public Set<Sone> getLikes(Post post) {
 612                 Set<Sone> sones = new HashSet<Sone>();
 613                 for (Sone sone : getSones()) {
 614                         if (sone.getLikedPostIds().contains(post.getId())) {
 615                                 sones.add(sone);
 616                         }
 617                 }
 618                 return sones;
 619         }
 620
 621         /**
 622          * Returns all Sones that have liked the given reply.
 623          *
 624          * @param reply
 625          *            The reply to get the liking Sones for
 626          * @return The Sones that like the given reply
 627          */
 628         public Set<Sone> getLikes(PostReply reply) {
 629                 Set<Sone> sones = new HashSet<Sone>();
 630                 for (Sone sone : getSones()) {
 631                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 632                                 sones.add(sone);
 633                         }
 634                 }
 635                 return sones;
 636         }
 637
 638         /**
 639          * Returns whether the given post is bookmarked.
 640          *
 641          * @param post
 642          *            The post to check
 643          * @return {@code true} if the given post is bookmarked, {@code false}
 644          *         otherwise
 645          */
 646         public boolean isBookmarked(Post post) {
 647                 return isPostBookmarked(post.getId());
 648         }
 649
 650         /**
 651          * Returns whether the post with the given ID is bookmarked.
 652          *
 653          * @param id
 654          *            The ID of the post to check
 655          * @return {@code true} if the post with the given ID is bookmarked,
 656          *         {@code false} otherwise
 657          */
 658         public boolean isPostBookmarked(String id) {
 659                 synchronized (bookmarkedPosts) {
 660                         return bookmarkedPosts.contains(id);
 661                 }
 662         }
 663
 664         /**
 665          * Returns all currently known bookmarked posts.
 666          *
 667          * @return All bookmarked posts
 668          */
 669         public Set<Post> getBookmarkedPosts() {
 670                 Set<Post> posts = new HashSet<Post>();
 671                 synchronized (bookmarkedPosts) {
 672                         for (String bookmarkedPostId : bookmarkedPosts) {
 673                                 Post post = getPost(bookmarkedPostId);
 674                                 if (post != null) {
 675                                         posts.add(post);
 676                                 }
 677                         }
 678                 }
 679                 return posts;
 680         }
 681
 682         /**
 683          * Returns the album with the given ID, creating a new album if no album
 684          * with the given ID can be found.
 685          *
 686          * @param albumId
 687          *            The ID of the album
 688          * @return The album with the given ID
 689          */
 690         public Album getAlbum(String albumId) {
 691                 return getAlbum(albumId, true);
 692         }
 693
 694         /**
 695          * Returns the album with the given ID, optionally creating a new album if
 696          * an album with the given ID can not be found.
 697          *
 698          * @param albumId
 699          *            The ID of the album
 700          * @param create
 701          *            {@code true} to create a new album if none exists for the
 702          *            given ID
 703          * @return The album with the given ID, or {@code null} if no album with the
 704          *         given ID exists and {@code create} is {@code false}
 705          */
 706         public Album getAlbum(String albumId, boolean create) {
 707                 synchronized (albums) {
 708                         Album album = albums.get(albumId);
 709                         if (create && (album == null)) {
 710                                 album = new Album(albumId);
 711                                 albums.put(albumId, album);
 712                         }
 713                         return album;
 714                 }
 715         }
 716
 717         /**
 718          * Returns the image with the given ID, creating it if necessary.
 719          *
 720          * @param imageId
 721          *            The ID of the image
 722          * @return The image with the given ID
 723          */
 724         public Image getImage(String imageId) {
 725                 return getImage(imageId, true);
 726         }
 727
 728         /**
 729          * Returns the image with the given ID, optionally creating it if it does
 730          * not exist.
 731          *
 732          * @param imageId
 733          *            The ID of the image
 734          * @param create
 735          *            {@code true} to create an image if none exists with the given
 736          *            ID
 737          * @return The image with the given ID, or {@code null} if none exists and
 738          *         none was created
 739          */
 740         public Image getImage(String imageId, boolean create) {
 741                 synchronized (images) {
 742                         Image image = images.get(imageId);
 743                         if (create && (image == null)) {
 744                                 image = new Image(imageId);
 745                                 images.put(imageId, image);
 746                         }
 747                         return image;
 748                 }
 749         }
 750
 751         /**
 752          * Returns the temporary image with the given ID.
 753          *
 754          * @param imageId
 755          *            The ID of the temporary image
 756          * @return The temporary image, or {@code null} if there is no temporary
 757          *         image with the given ID
 758          */
 759         public TemporaryImage getTemporaryImage(String imageId) {
 760                 synchronized (temporaryImages) {
 761                         return temporaryImages.get(imageId);
 762                 }
 763         }
 764
 765         //
 766         // ACTIONS
 767         //
 768
 769         /**
 770          * Locks the given Sone. A locked Sone will not be inserted by
 771          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 772          * again.
 773          *
 774          * @param sone
 775          *            The sone to lock
 776          */
 777         public void lockSone(Sone sone) {
 778                 synchronized (lockedSones) {
 779                         if (lockedSones.add(sone)) {
 780                                 eventBus.post(new SoneLockedEvent(sone));
 781                         }
 782                 }
 783         }
 784
 785         /**
 786          * Unlocks the given Sone.
 787          *
 788          * @see #lockSone(Sone)
 789          * @param sone
 790          *            The sone to unlock
 791          */
 792         public void unlockSone(Sone sone) {
 793                 synchronized (lockedSones) {
 794                         if (lockedSones.remove(sone)) {
 795                                 eventBus.post(new SoneUnlockedEvent(sone));
 796                         }
 797                 }
 798         }
 799
 800         /**
 801          * Adds a local Sone from the given own identity.
 802          *
 803          * @param ownIdentity
 804          *            The own identity to create a Sone from
 805          * @return The added (or already existing) Sone
 806          */
 807         public Sone addLocalSone(OwnIdentity ownIdentity) {
 808                 if (ownIdentity == null) {
 809                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 810                         return null;
 811                 }
 812                 synchronized (sones) {
 813                         final Sone sone;
 814                         try {
 815                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 816                         } catch (MalformedURLException mue1) {
 817                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 818                                 return null;
 819                         }
 820                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 821                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 822                         sone.setKnown(true);
 823                         /* TODO - load posts ’n stuff */
 824                         sones.put(ownIdentity.getId(), sone);
 825                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 826                         soneInserters.put(sone, soneInserter);
 827                         sone.setStatus(SoneStatus.idle);
 828                         loadSone(sone);
 829                         soneInserter.start();
 830                         return sone;
 831                 }
 832         }
 833
 834         /**
 835          * Creates a new Sone for the given own identity.
 836          *
 837          * @param ownIdentity
 838          *            The own identity to create a Sone for
 839          * @return The created Sone
 840          */
 841         public Sone createSone(OwnIdentity ownIdentity) {
 842                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 843                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 844                         return null;
 845                 }
 846                 Sone sone = addLocalSone(ownIdentity);
 847                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 848                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 849                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 850                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 851                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 852                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 853
 854                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 855                 touchConfiguration();
 856                 return sone;
 857         }
 858
 859         /**
 860          * Adds the Sone of the given identity.
 861          *
 862          * @param identity
 863          *            The identity whose Sone to add
 864          * @return The added or already existing Sone
 865          */
 866         public Sone addRemoteSone(Identity identity) {
 867                 if (identity == null) {
 868                         logger.log(Level.WARNING, "Given Identity is null!");
 869                         return null;
 870                 }
 871                 synchronized (sones) {
 872                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 873                         boolean newSone = sone.getRequestUri() == null;
 874                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 875                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 876                         if (newSone) {
 877                                 synchronized (knownSones) {
 878                                         newSone = !knownSones.contains(sone.getId());
 879                                 }
 880                                 sone.setKnown(!newSone);
 881                                 if (newSone) {
 882                                         eventBus.post(new NewSoneFoundEvent(sone));
 883                                         for (Sone localSone : getLocalSones()) {
 884                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 885                                                         followSone(localSone, sone.getId());
 886                                                 }
 887                                         }
 888                                 }
 889                         }
 890                         soneDownloader.addSone(sone);
 891                         soneDownloaders.execute(new Runnable() {
 892
 893                                 @Override
 894                                 @SuppressWarnings("synthetic-access")
 895                                 public void run() {
 896                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 897                                 }
 898
 899                         });
 900                         return sone;
 901                 }
 902         }
 903
 904         /**
 905          * Lets the given local Sone follow the Sone with the given ID.
 906          *
 907          * @param sone
 908          *            The local Sone that should follow another Sone
 909          * @param soneId
 910          *            The ID of the Sone to follow
 911          */
 912         public void followSone(Sone sone, String soneId) {
 913                 checkNotNull(sone, "sone must not be null");
 914                 checkNotNull(soneId, "soneId must not be null");
 915                 sone.addFriend(soneId);
 916                 synchronized (soneFollowingTimes) {
 917                         if (!soneFollowingTimes.containsKey(soneId)) {
 918                                 long now = System.currentTimeMillis();
 919                                 soneFollowingTimes.put(soneId, now);
 920                                 Sone followedSone = getSone(soneId);
 921                                 if (followedSone == null) {
 922                                         return;
 923                                 }
 924                                 for (Post post : followedSone.getPosts()) {
 925                                         if (post.getTime() < now) {
 926                                                 markPostKnown(post);
 927                                         }
 928                                 }
 929                                 for (PostReply reply : followedSone.getReplies()) {
 930                                         if (reply.getTime() < now) {
 931                                                 markReplyKnown(reply);
 932                                         }
 933                                 }
 934                         }
 935                 }
 936                 touchConfiguration();
 937         }
 938
 939         /**
 940          * Lets the given local Sone unfollow the Sone with the given ID.
 941          *
 942          * @param sone
 943          *            The local Sone that should unfollow another Sone
 944          * @param soneId
 945          *            The ID of the Sone being unfollowed
 946          */
 947         public void unfollowSone(Sone sone, String soneId) {
 948                 checkNotNull(sone, "sone must not be null");
 949                 checkNotNull(soneId, "soneId must not be null");
 950                 sone.removeFriend(soneId);
 951                 boolean unfollowedSoneStillFollowed = false;
 952                 for (Sone localSone : getLocalSones()) {
 953                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 954                 }
 955                 if (!unfollowedSoneStillFollowed) {
 956                         synchronized (soneFollowingTimes) {
 957                                 soneFollowingTimes.remove(soneId);
 958                         }
 959                 }
 960                 touchConfiguration();
 961         }
 962
 963         /**
 964          * Sets the trust value of the given origin Sone for the target Sone.
 965          *
 966          * @param origin
 967          *            The origin Sone
 968          * @param target
 969          *            The target Sone
 970          * @param trustValue
 971          *            The trust value (from {@code -100} to {@code 100})
 972          */
 973         public void setTrust(Sone origin, Sone target, int trustValue) {
 974                 checkNotNull(origin, "origin must not be null");
 975                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 976                 checkNotNull(target, "target must not be null");
 977                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 978                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 979         }
 980
 981         /**
 982          * Removes any trust assignment for the given target Sone.
 983          *
 984          * @param origin
 985          *            The trust origin
 986          * @param target
 987          *            The trust target
 988          */
 989         public void removeTrust(Sone origin, Sone target) {
 990                 checkNotNull(origin, "origin must not be null");
 991                 checkNotNull(target, "target must not be null");
 992                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 993                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 994         }
 995
 996         /**
 997          * Assigns the configured positive trust value for the given target.
 998          *
 999          * @param origin
1000          *            The trust origin
1001          * @param target
1002          *            The trust target
1003          */
1004         public void trustSone(Sone origin, Sone target) {
1005                 setTrust(origin, target, preferences.getPositiveTrust());
1006         }
1007
1008         /**
1009          * Assigns the configured negative trust value for the given target.
1010          *
1011          * @param origin
1012          *            The trust origin
1013          * @param target
1014          *            The trust target
1015          */
1016         public void distrustSone(Sone origin, Sone target) {
1017                 setTrust(origin, target, preferences.getNegativeTrust());
1018         }
1019
1020         /**
1021          * Removes the trust assignment for the given target.
1022          *
1023          * @param origin
1024          *            The trust origin
1025          * @param target
1026          *            The trust target
1027          */
1028         public void untrustSone(Sone origin, Sone target) {
1029                 removeTrust(origin, target);
1030         }
1031
1032         /**
1033          * Updates the stored Sone with the given Sone.
1034          *
1035          * @param sone
1036          *            The updated Sone
1037          */
1038         public void updateSone(Sone sone) {
1039                 updateSone(sone, false);
1040         }
1041
1042         /**
1043          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1044          * {@code true}, an older Sone than the current Sone can be given to restore
1045          * an old state.
1046          *
1047          * @param sone
1048          *            The Sone to update
1049          * @param soneRescueMode
1050          *            {@code true} if the stored Sone should be updated regardless
1051          *            of the age of the given Sone
1052          */
1053         public void updateSone(Sone sone, boolean soneRescueMode) {
1054                 if (hasSone(sone.getId())) {
1055                         Sone storedSone = getSone(sone.getId());
1056                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1057                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
1058                                 return;
1059                         }
1060                         synchronized (posts) {
1061                                 if (!soneRescueMode) {
1062                                         for (Post post : storedSone.getPosts()) {
1063                                                 posts.remove(post.getId());
1064                                                 if (!sone.getPosts().contains(post)) {
1065                                                         eventBus.post(new PostRemovedEvent(post));
1066                                                 }
1067                                         }
1068                                 }
1069                                 List<Post> storedPosts = storedSone.getPosts();
1070                                 synchronized (knownPosts) {
1071                                         for (Post post : sone.getPosts()) {
1072                                                 PostBuilder postBuilder = postBuilderFactory.newPostBuilder();
1073                                                 postBuilder.copyPost(post).from(storedSone.getId());
1074                                                 Post newPost = postBuilder.build().setKnown(knownPosts.contains(post.getId()));
1075                                                 if (!storedPosts.contains(newPost)) {
1076                                                         if (newPost.getTime() < getSoneFollowingTime(sone)) {
1077                                                                 knownPosts.add(newPost.getId());
1078                                                                 newPost.setKnown(true);
1079                                                         } else if (!knownPosts.contains(newPost.getId())) {
1080                                                                 eventBus.post(new NewPostFoundEvent(newPost));
1081                                                         }
1082                                                 }
1083                                                 posts.put(newPost.getId(), newPost);
1084                                         }
1085                                 }
1086                         }
1087                         synchronized (replies) {
1088                                 if (!soneRescueMode) {
1089                                         for (PostReply reply : storedSone.getReplies()) {
1090                                                 replies.remove(reply.getId());
1091                                                 if (!sone.getReplies().contains(reply)) {
1092                                                         eventBus.post(new PostReplyRemovedEvent(reply));
1093                                                 }
1094                                         }
1095                                 }
1096                                 Set<PostReply> storedReplies = storedSone.getReplies();
1097                                 synchronized (knownReplies) {
1098                                         for (PostReply reply : sone.getReplies()) {
1099                                                 reply.setKnown(knownReplies.contains(reply.getId()));
1100                                                 if (!storedReplies.contains(reply)) {
1101                                                         if (reply.getTime() < getSoneFollowingTime(sone)) {
1102                                                                 knownReplies.add(reply.getId());
1103                                                                 reply.setKnown(true);
1104                                                         } else if (!knownReplies.contains(reply.getId())) {
1105                                                                 eventBus.post(new NewPostReplyFoundEvent(reply));
1106                                                         }
1107                                                 }
1108                                                 replies.put(reply.getId(), reply);
1109                                         }
1110                                 }
1111                         }
1112                         synchronized (albums) {
1113                                 synchronized (images) {
1114                                         for (Album album : storedSone.getAlbums()) {
1115                                                 albums.remove(album.getId());
1116                                                 for (Image image : album.getImages()) {
1117                                                         images.remove(image.getId());
1118                                                 }
1119                                         }
1120                                         for (Album album : sone.getAlbums()) {
1121                                                 albums.put(album.getId(), album);
1122                                                 for (Image image : album.getImages()) {
1123                                                         images.put(image.getId(), image);
1124                                                 }
1125                                         }
1126                                 }
1127                         }
1128                         synchronized (storedSone) {
1129                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1130                                         storedSone.setTime(sone.getTime());
1131                                 }
1132                                 storedSone.setClient(sone.getClient());
1133                                 storedSone.setProfile(sone.getProfile());
1134                                 if (soneRescueMode) {
1135                                         for (Post post : sone.getPosts()) {
1136                                                 storedSone.addPost(post);
1137                                         }
1138                                         for (PostReply reply : sone.getReplies()) {
1139                                                 storedSone.addReply(reply);
1140                                         }
1141                                         for (String likedPostId : sone.getLikedPostIds()) {
1142                                                 storedSone.addLikedPostId(likedPostId);
1143                                         }
1144                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1145                                                 storedSone.addLikedReplyId(likedReplyId);
1146                                         }
1147                                         for (Album album : sone.getAlbums()) {
1148                                                 storedSone.addAlbum(album);
1149                                         }
1150                                 } else {
1151                                         storedSone.setPosts(sone.getPosts());
1152                                         storedSone.setReplies(sone.getReplies());
1153                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1154                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1155                                         storedSone.setAlbums(sone.getAlbums());
1156                                 }
1157                                 storedSone.setLatestEdition(sone.getLatestEdition());
1158                         }
1159                 }
1160         }
1161
1162         /**
1163          * Deletes the given Sone. This will remove the Sone from the
1164          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1165          * remove the context from its identity.
1166          *
1167          * @param sone
1168          *            The Sone to delete
1169          */
1170         public void deleteSone(Sone sone) {
1171                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1172                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1173                         return;
1174                 }
1175                 synchronized (sones) {
1176                         if (!getLocalSones().contains(sone)) {
1177                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1178                                 return;
1179                         }
1180                         sones.remove(sone.getId());
1181                         SoneInserter soneInserter = soneInserters.remove(sone);
1182                         soneInserter.stop();
1183                 }
1184                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1185                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1186                 try {
1187                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1188                 } catch (ConfigurationException ce1) {
1189                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1190                 }
1191         }
1192
1193         /**
1194          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1195          * known} before, a {@link MarkSoneKnownEvent} is fired.
1196          *
1197          * @param sone
1198          *            The Sone to mark as known
1199          */
1200         public void markSoneKnown(Sone sone) {
1201                 if (!sone.isKnown()) {
1202                         sone.setKnown(true);
1203                         synchronized (knownSones) {
1204                                 knownSones.add(sone.getId());
1205                         }
1206                         eventBus.post(new MarkSoneKnownEvent(sone));
1207                         touchConfiguration();
1208                 }
1209         }
1210
1211         /**
1212          * Loads and updates the given Sone from the configuration. If any error is
1213          * encountered, loading is aborted and the given Sone is not changed.
1214          *
1215          * @param sone
1216          *            The Sone to load and update
1217          */
1218         public void loadSone(Sone sone) {
1219                 if (!sone.isLocal()) {
1220                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1221                         return;
1222                 }
1223
1224                 /* initialize options. */
1225                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1226                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1227                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1228                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1229                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1230                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1231
1232                 /* load Sone. */
1233                 String sonePrefix = "Sone/" + sone.getId();
1234                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1235                 if (soneTime == null) {
1236                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1237                         return;
1238                 }
1239                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1240
1241                 /* load profile. */
1242                 Profile profile = new Profile(sone);
1243                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1244                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1245                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1246                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1247                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1248                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1249
1250                 /* load profile fields. */
1251                 while (true) {
1252                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1253                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1254                         if (fieldName == null) {
1255                                 break;
1256                         }
1257                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1258                         profile.addField(fieldName).setValue(fieldValue);
1259                 }
1260
1261                 /* load posts. */
1262                 Set<Post> posts = new HashSet<Post>();
1263                 while (true) {
1264                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1265                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1266                         if (postId == null) {
1267                                 break;
1268                         }
1269                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1270                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1271                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1272                         if ((postTime == 0) || (postText == null)) {
1273                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1274                                 return;
1275                         }
1276                         PostBuilder postBuilder = postBuilderFactory.newPostBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1277                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1278                                 postBuilder.to(postRecipientId);
1279                         }
1280                         posts.add(postBuilder.build());
1281                 }
1282
1283                 /* load replies. */
1284                 Set<PostReply> replies = new HashSet<PostReply>();
1285                 while (true) {
1286                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1287                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1288                         if (replyId == null) {
1289                                 break;
1290                         }
1291                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1292                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1293                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1294                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1295                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1296                                 return;
1297                         }
1298                         PostReplyBuilder postReplyBuilder = postReplyBuilderFactory.newPostReplyBuilder();
1299                         postReplyBuilder.withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1300                         replies.add(postReplyBuilder.build());
1301                 }
1302
1303                 /* load post likes. */
1304                 Set<String> likedPostIds = new HashSet<String>();
1305                 while (true) {
1306                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1307                         if (likedPostId == null) {
1308                                 break;
1309                         }
1310                         likedPostIds.add(likedPostId);
1311                 }
1312
1313                 /* load reply likes. */
1314                 Set<String> likedReplyIds = new HashSet<String>();
1315                 while (true) {
1316                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1317                         if (likedReplyId == null) {
1318                                 break;
1319                         }
1320                         likedReplyIds.add(likedReplyId);
1321                 }
1322
1323                 /* load friends. */
1324                 Set<String> friends = new HashSet<String>();
1325                 while (true) {
1326                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1327                         if (friendId == null) {
1328                                 break;
1329                         }
1330                         friends.add(friendId);
1331                 }
1332
1333                 /* load albums. */
1334                 List<Album> topLevelAlbums = new ArrayList<Album>();
1335                 int albumCounter = 0;
1336                 while (true) {
1337                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1338                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1339                         if (albumId == null) {
1340                                 break;
1341                         }
1342                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1343                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1344                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1345                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1346                         if ((albumTitle == null) || (albumDescription == null)) {
1347                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1348                                 return;
1349                         }
1350                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1351                         if (albumParentId != null) {
1352                                 Album parentAlbum = getAlbum(albumParentId, false);
1353                                 if (parentAlbum == null) {
1354                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1355                                         return;
1356                                 }
1357                                 parentAlbum.addAlbum(album);
1358                         } else {
1359                                 if (!topLevelAlbums.contains(album)) {
1360                                         topLevelAlbums.add(album);
1361                                 }
1362                         }
1363                 }
1364
1365                 /* load images. */
1366                 int imageCounter = 0;
1367                 while (true) {
1368                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1369                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1370                         if (imageId == null) {
1371                                 break;
1372                         }
1373                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1374                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1375                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1376                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1377                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1378                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1379                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1380                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1381                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1382                                 return;
1383                         }
1384                         Album album = getAlbum(albumId, false);
1385                         if (album == null) {
1386                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1387                                 return;
1388                         }
1389                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1390                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1391                         album.addImage(image);
1392                 }
1393
1394                 /* load avatar. */
1395                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1396                 if (avatarId != null) {
1397                         profile.setAvatar(getImage(avatarId, false));
1398                 }
1399
1400                 /* load options. */
1401                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1402                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1403                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1404                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1405                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1406                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1407
1408                 /* if we’re still here, Sone was loaded successfully. */
1409                 synchronized (sone) {
1410                         sone.setTime(soneTime);
1411                         sone.setProfile(profile);
1412                         sone.setPosts(posts);
1413                         sone.setReplies(replies);
1414                         sone.setLikePostIds(likedPostIds);
1415                         sone.setLikeReplyIds(likedReplyIds);
1416                         for (String friendId : friends) {
1417                                 followSone(sone, friendId);
1418                         }
1419                         sone.setAlbums(topLevelAlbums);
1420                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1421                 }
1422                 synchronized (knownSones) {
1423                         for (String friend : friends) {
1424                                 knownSones.add(friend);
1425                         }
1426                 }
1427                 synchronized (knownPosts) {
1428                         for (Post post : posts) {
1429                                 knownPosts.add(post.getId());
1430                         }
1431                 }
1432                 synchronized (knownReplies) {
1433                         for (PostReply reply : replies) {
1434                                 knownReplies.add(reply.getId());
1435                         }
1436                 }
1437         }
1438
1439         /**
1440          * Creates a new post.
1441          *
1442          * @param sone
1443          *            The Sone that creates the post
1444          * @param text
1445          *            The text of the post
1446          * @return The created post
1447          */
1448         public Post createPost(Sone sone, String text) {
1449                 return createPost(sone, System.currentTimeMillis(), text);
1450         }
1451
1452         /**
1453          * Creates a new post.
1454          *
1455          * @param sone
1456          *            The Sone that creates the post
1457          * @param time
1458          *            The time of the post
1459          * @param text
1460          *            The text of the post
1461          * @return The created post
1462          */
1463         public Post createPost(Sone sone, long time, String text) {
1464                 return createPost(sone, null, time, text);
1465         }
1466
1467         /**
1468          * Creates a new post.
1469          *
1470          * @param sone
1471          *            The Sone that creates the post
1472          * @param recipient
1473          *            The recipient Sone, or {@code null} if this post does not have
1474          *            a recipient
1475          * @param text
1476          *            The text of the post
1477          * @return The created post
1478          */
1479         public Post createPost(Sone sone, Sone recipient, String text) {
1480                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1481         }
1482
1483         /**
1484          * Creates a new post.
1485          *
1486          * @param sone
1487          *            The Sone that creates the post
1488          * @param recipient
1489          *            The recipient Sone, or {@code null} if this post does not have
1490          *            a recipient
1491          * @param time
1492          *            The time of the post
1493          * @param text
1494          *            The text of the post
1495          * @return The created post
1496          */
1497         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1498                 checkNotNull(text, "text must not be null");
1499                 checkArgument(text.trim().length() > 0, "text must not be empty");
1500                 if (!sone.isLocal()) {
1501                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1502                         return null;
1503                 }
1504                 PostBuilder postBuilder = postBuilderFactory.newPostBuilder();
1505                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1506                 if (recipient != null) {
1507                         postBuilder.to(recipient.getId());
1508                 }
1509                 final Post post = postBuilder.build();
1510                 synchronized (posts) {
1511                         posts.put(post.getId(), post);
1512                 }
1513                 eventBus.post(new NewPostFoundEvent(post));
1514                 sone.addPost(post);
1515                 touchConfiguration();
1516                 localElementTicker.schedule(new Runnable() {
1517
1518                         /**
1519                          * {@inheritDoc}
1520                          */
1521                         @Override
1522                         public void run() {
1523                                 markPostKnown(post);
1524                         }
1525                 }, 10, TimeUnit.SECONDS);
1526                 return post;
1527         }
1528
1529         /**
1530          * Deletes the given post.
1531          *
1532          * @param post
1533          *            The post to delete
1534          */
1535         public void deletePost(Post post) {
1536                 if (!post.getSone().isLocal()) {
1537                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1538                         return;
1539                 }
1540                 post.getSone().removePost(post);
1541                 synchronized (posts) {
1542                         posts.remove(post.getId());
1543                 }
1544                 eventBus.post(new PostRemovedEvent(post));
1545                 markPostKnown(post);
1546                 touchConfiguration();
1547         }
1548
1549         /**
1550          * Marks the given post as known, if it is currently not a known post
1551          * (according to {@link Post#isKnown()}).
1552          *
1553          * @param post
1554          *            The post to mark as known
1555          */
1556         public void markPostKnown(Post post) {
1557                 post.setKnown(true);
1558                 synchronized (knownPosts) {
1559                         eventBus.post(new MarkPostKnownEvent(post));
1560                         if (knownPosts.add(post.getId())) {
1561                                 touchConfiguration();
1562                         }
1563                 }
1564                 for (PostReply reply : getReplies(post)) {
1565                         markReplyKnown(reply);
1566                 }
1567         }
1568
1569         /**
1570          * Bookmarks the given post.
1571          *
1572          * @param post
1573          *            The post to bookmark
1574          */
1575         public void bookmark(Post post) {
1576                 bookmarkPost(post.getId());
1577         }
1578
1579         /**
1580          * Bookmarks the post with the given ID.
1581          *
1582          * @param id
1583          *            The ID of the post to bookmark
1584          */
1585         public void bookmarkPost(String id) {
1586                 synchronized (bookmarkedPosts) {
1587                         bookmarkedPosts.add(id);
1588                 }
1589         }
1590
1591         /**
1592          * Removes the given post from the bookmarks.
1593          *
1594          * @param post
1595          *            The post to unbookmark
1596          */
1597         public void unbookmark(Post post) {
1598                 unbookmarkPost(post.getId());
1599         }
1600
1601         /**
1602          * Removes the post with the given ID from the bookmarks.
1603          *
1604          * @param id
1605          *            The ID of the post to unbookmark
1606          */
1607         public void unbookmarkPost(String id) {
1608                 synchronized (bookmarkedPosts) {
1609                         bookmarkedPosts.remove(id);
1610                 }
1611         }
1612
1613         /**
1614          * Creates a new reply.
1615          *
1616          * @param sone
1617          *            The Sone that creates the reply
1618          * @param post
1619          *            The post that this reply refers to
1620          * @param text
1621          *            The text of the reply
1622          * @return The created reply
1623          */
1624         public PostReply createReply(Sone sone, Post post, String text) {
1625                 checkNotNull(text, "text must not be null");
1626                 checkArgument(text.trim().length() > 0, "text must not be empty");
1627                 if (!sone.isLocal()) {
1628                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1629                         return null;
1630                 }
1631                 PostReplyBuilder postReplyBuilder = postReplyBuilderFactory.newPostReplyBuilder();
1632                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1633                 final PostReply reply = postReplyBuilder.build();
1634                 synchronized (replies) {
1635                         replies.put(reply.getId(), reply);
1636                 }
1637                 synchronized (knownReplies) {
1638                         eventBus.post(new NewPostReplyFoundEvent(reply));
1639                 }
1640                 sone.addReply(reply);
1641                 touchConfiguration();
1642                 localElementTicker.schedule(new Runnable() {
1643
1644                         /**
1645                          * {@inheritDoc}
1646                          */
1647                         @Override
1648                         public void run() {
1649                                 markReplyKnown(reply);
1650                         }
1651                 }, 10, TimeUnit.SECONDS);
1652                 return reply;
1653         }
1654
1655         /**
1656          * Deletes the given reply.
1657          *
1658          * @param reply
1659          *            The reply to delete
1660          */
1661         public void deleteReply(PostReply reply) {
1662                 Sone sone = reply.getSone();
1663                 if (!sone.isLocal()) {
1664                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1665                         return;
1666                 }
1667                 synchronized (replies) {
1668                         replies.remove(reply.getId());
1669                 }
1670                 synchronized (knownReplies) {
1671                         markReplyKnown(reply);
1672                         knownReplies.remove(reply.getId());
1673                 }
1674                 sone.removeReply(reply);
1675                 touchConfiguration();
1676         }
1677
1678         /**
1679          * Marks the given reply as known, if it is currently not a known reply
1680          * (according to {@link Reply#isKnown()}).
1681          *
1682          * @param reply
1683          *            The reply to mark as known
1684          */
1685         public void markReplyKnown(PostReply reply) {
1686                 reply.setKnown(true);
1687                 synchronized (knownReplies) {
1688                         eventBus.post(new MarkPostReplyKnownEvent(reply));
1689                         if (knownReplies.add(reply.getId())) {
1690                                 touchConfiguration();
1691                         }
1692                 }
1693         }
1694
1695         /**
1696          * Creates a new top-level album for the given Sone.
1697          *
1698          * @param sone
1699          *            The Sone to create the album for
1700          * @return The new album
1701          */
1702         public Album createAlbum(Sone sone) {
1703                 return createAlbum(sone, null);
1704         }
1705
1706         /**
1707          * Creates a new album for the given Sone.
1708          *
1709          * @param sone
1710          *            The Sone to create the album for
1711          * @param parent
1712          *            The parent of the album (may be {@code null} to create a
1713          *            top-level album)
1714          * @return The new album
1715          */
1716         public Album createAlbum(Sone sone, Album parent) {
1717                 Album album = new Album();
1718                 synchronized (albums) {
1719                         albums.put(album.getId(), album);
1720                 }
1721                 album.setSone(sone);
1722                 if (parent != null) {
1723                         parent.addAlbum(album);
1724                 } else {
1725                         sone.addAlbum(album);
1726                 }
1727                 return album;
1728         }
1729
1730         /**
1731          * Deletes the given album. The owner of the album has to be a local Sone,
1732          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1733          *
1734          * @param album
1735          *            The album to remove
1736          */
1737         public void deleteAlbum(Album album) {
1738                 checkNotNull(album, "album must not be null");
1739                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1740                 if (!album.isEmpty()) {
1741                         return;
1742                 }
1743                 if (album.getParent() == null) {
1744                         album.getSone().removeAlbum(album);
1745                 } else {
1746                         album.getParent().removeAlbum(album);
1747                 }
1748                 synchronized (albums) {
1749                         albums.remove(album.getId());
1750                 }
1751                 touchConfiguration();
1752         }
1753
1754         /**
1755          * Creates a new image.
1756          *
1757          * @param sone
1758          *            The Sone creating the image
1759          * @param album
1760          *            The album the image will be inserted into
1761          * @param temporaryImage
1762          *            The temporary image to create the image from
1763          * @return The newly created image
1764          */
1765         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1766                 checkNotNull(sone, "sone must not be null");
1767                 checkNotNull(album, "album must not be null");
1768                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1769                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1770                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1771                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1772                 album.addImage(image);
1773                 synchronized (images) {
1774                         images.put(image.getId(), image);
1775                 }
1776                 imageInserter.insertImage(temporaryImage, image);
1777                 return image;
1778         }
1779
1780         /**
1781          * Deletes the given image. This method will also delete a matching
1782          * temporary image.
1783          *
1784          * @see #deleteTemporaryImage(TemporaryImage)
1785          * @param image
1786          *            The image to delete
1787          */
1788         public void deleteImage(Image image) {
1789                 checkNotNull(image, "image must not be null");
1790                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1791                 deleteTemporaryImage(image.getId());
1792                 image.getAlbum().removeImage(image);
1793                 synchronized (images) {
1794                         images.remove(image.getId());
1795                 }
1796                 touchConfiguration();
1797         }
1798
1799         /**
1800          * Creates a new temporary image.
1801          *
1802          * @param mimeType
1803          *            The MIME type of the temporary image
1804          * @param imageData
1805          *            The encoded data of the image
1806          * @return The temporary image
1807          */
1808         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1809                 TemporaryImage temporaryImage = new TemporaryImage();
1810                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1811                 synchronized (temporaryImages) {
1812                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1813                 }
1814                 return temporaryImage;
1815         }
1816
1817         /**
1818          * Deletes the given temporary image.
1819          *
1820          * @param temporaryImage
1821          *            The temporary image to delete
1822          */
1823         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1824                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1825                 deleteTemporaryImage(temporaryImage.getId());
1826         }
1827
1828         /**
1829          * Deletes the temporary image with the given ID.
1830          *
1831          * @param imageId
1832          *            The ID of the temporary image to delete
1833          */
1834         public void deleteTemporaryImage(String imageId) {
1835                 checkNotNull(imageId, "imageId must not be null");
1836                 synchronized (temporaryImages) {
1837                         temporaryImages.remove(imageId);
1838                 }
1839                 Image image = getImage(imageId, false);
1840                 if (image != null) {
1841                         imageInserter.cancelImageInsert(image);
1842                 }
1843         }
1844
1845         /**
1846          * Notifies the core that the configuration, either of the core or of a
1847          * single local Sone, has changed, and that the configuration should be
1848          * saved.
1849          */
1850         public void touchConfiguration() {
1851                 lastConfigurationUpdate = System.currentTimeMillis();
1852         }
1853
1854         //
1855         // SERVICE METHODS
1856         //
1857
1858         /**
1859          * Starts the core.
1860          */
1861         @Override
1862         public void serviceStart() {
1863                 loadConfiguration();
1864                 updateChecker.start();
1865                 identityManager.start();
1866                 webOfTrustUpdater.init();
1867                 webOfTrustUpdater.start();
1868         }
1869
1870         /**
1871          * {@inheritDoc}
1872          */
1873         @Override
1874         public void serviceRun() {
1875                 long lastSaved = System.currentTimeMillis();
1876                 while (!shouldStop()) {
1877                         sleep(1000);
1878                         long now = System.currentTimeMillis();
1879                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1880                                 for (Sone localSone : getLocalSones()) {
1881                                         saveSone(localSone);
1882                                 }
1883                                 saveConfiguration();
1884                                 lastSaved = now;
1885                         }
1886                 }
1887         }
1888
1889         /**
1890          * Stops the core.
1891          */
1892         @Override
1893         public void serviceStop() {
1894                 localElementTicker.shutdownNow();
1895                 synchronized (sones) {
1896                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1897                                 soneInserter.getValue().stop();
1898                                 saveSone(soneInserter.getKey());
1899                         }
1900                 }
1901                 saveConfiguration();
1902                 webOfTrustUpdater.stop();
1903                 updateChecker.stop();
1904                 soneDownloader.stop();
1905                 identityManager.stop();
1906         }
1907
1908         //
1909         // PRIVATE METHODS
1910         //
1911
1912         /**
1913          * Saves the given Sone. This will persist all local settings for the given
1914          * Sone, such as the friends list and similar, private options.
1915          *
1916          * @param sone
1917          *            The Sone to save
1918          */
1919         private synchronized void saveSone(Sone sone) {
1920                 if (!sone.isLocal()) {
1921                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1922                         return;
1923                 }
1924                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1925                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1926                         return;
1927                 }
1928
1929                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1930                 try {
1931                         /* save Sone into configuration. */
1932                         String sonePrefix = "Sone/" + sone.getId();
1933                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1934                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1935
1936                         /* save profile. */
1937                         Profile profile = sone.getProfile();
1938                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1939                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1940                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1941                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1942                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1943                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1944                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1945
1946                         /* save profile fields. */
1947                         int fieldCounter = 0;
1948                         for (Field profileField : profile.getFields()) {
1949                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1950                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1951                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1952                         }
1953                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1954
1955                         /* save posts. */
1956                         int postCounter = 0;
1957                         for (Post post : sone.getPosts()) {
1958                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1959                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1960                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1961                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1962                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1963                         }
1964                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1965
1966                         /* save replies. */
1967                         int replyCounter = 0;
1968                         for (PostReply reply : sone.getReplies()) {
1969                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1970                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1971                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1972                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1973                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1974                         }
1975                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1976
1977                         /* save post likes. */
1978                         int postLikeCounter = 0;
1979                         for (String postId : sone.getLikedPostIds()) {
1980                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1981                         }
1982                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1983
1984                         /* save reply likes. */
1985                         int replyLikeCounter = 0;
1986                         for (String replyId : sone.getLikedReplyIds()) {
1987                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1988                         }
1989                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1990
1991                         /* save friends. */
1992                         int friendCounter = 0;
1993                         for (String friendId : sone.getFriends()) {
1994                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1995                         }
1996                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1997
1998                         /* save albums. first, collect in a flat structure, top-level first. */
1999                         List<Album> albums = sone.getAllAlbums();
2000
2001                         int albumCounter = 0;
2002                         for (Album album : albums) {
2003                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
2004                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
2005                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
2006                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
2007                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
2008                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
2009                         }
2010                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
2011
2012                         /* save images. */
2013                         int imageCounter = 0;
2014                         for (Album album : albums) {
2015                                 for (Image image : album.getImages()) {
2016                                         if (!image.isInserted()) {
2017                                                 continue;
2018                                         }
2019                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
2020                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
2021                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
2022                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2023                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2024                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2025                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2026                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2027                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2028                                 }
2029                         }
2030                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2031
2032                         /* save options. */
2033                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2034                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2035                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2036                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2037                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2038                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
2039
2040                         configuration.save();
2041
2042                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2043
2044                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
2045                 } catch (ConfigurationException ce1) {
2046                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
2047                 }
2048         }
2049
2050         /**
2051          * Saves the current options.
2052          */
2053         private void saveConfiguration() {
2054                 synchronized (configuration) {
2055                         if (storingConfiguration) {
2056                                 logger.log(Level.FINE, "Already storing configuration…");
2057                                 return;
2058                         }
2059                         storingConfiguration = true;
2060                 }
2061
2062                 /* store the options first. */
2063                 try {
2064                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2065                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2066                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2067                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
2068                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2069                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2070                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2071                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2072                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2073                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2074                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2075                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2076
2077                         /* save known Sones. */
2078                         int soneCounter = 0;
2079                         synchronized (knownSones) {
2080                                 for (String knownSoneId : knownSones) {
2081                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2082                                 }
2083                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2084                         }
2085
2086                         /* save Sone following times. */
2087                         soneCounter = 0;
2088                         synchronized (soneFollowingTimes) {
2089                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2090                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
2091                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2092                                         ++soneCounter;
2093                                 }
2094                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2095                         }
2096
2097                         /* save known posts. */
2098                         int postCounter = 0;
2099                         synchronized (knownPosts) {
2100                                 for (String knownPostId : knownPosts) {
2101                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2102                                 }
2103                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2104                         }
2105
2106                         /* save known replies. */
2107                         int replyCounter = 0;
2108                         synchronized (knownReplies) {
2109                                 for (String knownReplyId : knownReplies) {
2110                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2111                                 }
2112                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2113                         }
2114
2115                         /* save bookmarked posts. */
2116                         int bookmarkedPostCounter = 0;
2117                         synchronized (bookmarkedPosts) {
2118                                 for (String bookmarkedPostId : bookmarkedPosts) {
2119                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2120                                 }
2121                         }
2122                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2123
2124                         /* now save it. */
2125                         configuration.save();
2126
2127                 } catch (ConfigurationException ce1) {
2128                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2129                 } finally {
2130                         synchronized (configuration) {
2131                                 storingConfiguration = false;
2132                         }
2133                 }
2134         }
2135
2136         /**
2137          * Loads the configuration.
2138          */
2139         @SuppressWarnings("unchecked")
2140         private void loadConfiguration() {
2141                 /* create options. */
2142                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2143
2144                         @Override
2145                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2146                                 SoneInserter.setInsertionDelay(newValue);
2147                         }
2148
2149                 }));
2150                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2151                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2152                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2153                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2154                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2155                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
2156                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
2157                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2158                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2159
2160                         @Override
2161                         @SuppressWarnings("synthetic-access")
2162                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2163                                 fcpInterface.setActive(newValue);
2164                         }
2165                 }));
2166                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2167
2168                         @Override
2169                         @SuppressWarnings("synthetic-access")
2170                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2171                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2172                         }
2173
2174                 }));
2175
2176                 loadConfigurationValue("InsertionDelay");
2177                 loadConfigurationValue("PostsPerPage");
2178                 loadConfigurationValue("ImagesPerPage");
2179                 loadConfigurationValue("CharactersPerPost");
2180                 loadConfigurationValue("PostCutOffLength");
2181                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2182                 loadConfigurationValue("PositiveTrust");
2183                 loadConfigurationValue("NegativeTrust");
2184                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2185                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2186                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2187
2188                 /* load known Sones. */
2189                 int soneCounter = 0;
2190                 while (true) {
2191                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2192                         if (knownSoneId == null) {
2193                                 break;
2194                         }
2195                         synchronized (knownSones) {
2196                                 knownSones.add(knownSoneId);
2197                         }
2198                 }
2199
2200                 /* load Sone following times. */
2201                 soneCounter = 0;
2202                 while (true) {
2203                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2204                         if (soneId == null) {
2205                                 break;
2206                         }
2207                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2208                         Sone followedSone = getSone(soneId);
2209                         if (followedSone == null) {
2210                                 logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
2211                         } else {
2212                                 synchronized (soneFollowingTimes) {
2213                                         soneFollowingTimes.put(soneId, time);
2214                                 }
2215                         }
2216                         ++soneCounter;
2217                 }
2218
2219                 /* load known posts. */
2220                 int postCounter = 0;
2221                 while (true) {
2222                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2223                         if (knownPostId == null) {
2224                                 break;
2225                         }
2226                         synchronized (knownPosts) {
2227                                 knownPosts.add(knownPostId);
2228                         }
2229                 }
2230
2231                 /* load known replies. */
2232                 int replyCounter = 0;
2233                 while (true) {
2234                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2235                         if (knownReplyId == null) {
2236                                 break;
2237                         }
2238                         synchronized (knownReplies) {
2239                                 knownReplies.add(knownReplyId);
2240                         }
2241                 }
2242
2243                 /* load bookmarked posts. */
2244                 int bookmarkedPostCounter = 0;
2245                 while (true) {
2246                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2247                         if (bookmarkedPostId == null) {
2248                                 break;
2249                         }
2250                         synchronized (bookmarkedPosts) {
2251                                 bookmarkedPosts.add(bookmarkedPostId);
2252                         }
2253                 }
2254
2255         }
2256
2257         /**
2258          * Loads an {@link Integer} configuration value for the option with the
2259          * given name, logging validation failures.
2260          *
2261          * @param optionName
2262          *            The name of the option to load
2263          */
2264         private void loadConfigurationValue(String optionName) {
2265                 try {
2266                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2267                 } catch (IllegalArgumentException iae1) {
2268                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2269                 }
2270         }
2271
2272         /**
2273          * Notifies the core that a new {@link OwnIdentity} was added.
2274          *
2275          * @param ownIdentityAddedEvent
2276          *            The event
2277          */
2278         @Subscribe
2279         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2280                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2281                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2282                 if (ownIdentity.hasContext("Sone")) {
2283                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2284                         addLocalSone(ownIdentity);
2285                 }
2286         }
2287
2288         /**
2289          * Notifies the core that an {@link OwnIdentity} was removed.
2290          *
2291          * @param ownIdentityRemovedEvent
2292          *            The event
2293          */
2294         @Subscribe
2295         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2296                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2297                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2298                 trustedIdentities.remove(ownIdentity);
2299         }
2300
2301         /**
2302          * Notifies the core that a new {@link Identity} was added.
2303          *
2304          * @param identityAddedEvent
2305          *            The event
2306          */
2307         @Subscribe
2308         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2309                 Identity identity = identityAddedEvent.identity();
2310                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2311                 trustedIdentities.get(identityAddedEvent.ownIdentity()).add(identity);
2312                 addRemoteSone(identity);
2313         }
2314
2315         /**
2316          * Notifies the core that an {@link Identity} was updated.
2317          *
2318          * @param identityUpdatedEvent
2319          *            The event
2320          */
2321         @Subscribe
2322         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2323                 final Identity identity = identityUpdatedEvent.identity();
2324                 soneDownloaders.execute(new Runnable() {
2325
2326                         @Override
2327                         @SuppressWarnings("synthetic-access")
2328                         public void run() {
2329                                 Sone sone = getRemoteSone(identity.getId(), false);
2330                                 sone.setIdentity(identity);
2331                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2332                                 soneDownloader.addSone(sone);
2333                                 soneDownloader.fetchSone(sone);
2334                         }
2335                 });
2336         }
2337
2338         /**
2339          * Notifies the core that an {@link Identity} was removed.
2340          *
2341          * @param identityRemovedEvent
2342          *            The event
2343          */
2344         @Subscribe
2345         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2346                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2347                 Identity identity = identityRemovedEvent.identity();
2348                 trustedIdentities.get(ownIdentity).remove(identity);
2349                 boolean foundIdentity = false;
2350                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2351                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2352                                 continue;
2353                         }
2354                         if (trustedIdentity.getValue().contains(identity)) {
2355                                 foundIdentity = true;
2356                         }
2357                 }
2358                 if (foundIdentity) {
2359                         /* some local identity still trusts this identity, don’t remove. */
2360                         return;
2361                 }
2362                 Sone sone = getSone(identity.getId(), false);
2363                 if (sone == null) {
2364                         /* TODO - we don’t have the Sone anymore. should this happen? */
2365                         return;
2366                 }
2367                 synchronized (posts) {
2368                         synchronized (knownPosts) {
2369                                 for (Post post : sone.getPosts()) {
2370                                         posts.remove(post.getId());
2371                                         eventBus.post(new PostRemovedEvent(post));
2372                                 }
2373                         }
2374                 }
2375                 synchronized (replies) {
2376                         synchronized (knownReplies) {
2377                                 for (PostReply reply : sone.getReplies()) {
2378                                         replies.remove(reply.getId());
2379                                         eventBus.post(new PostReplyRemovedEvent(reply));
2380                                 }
2381                         }
2382                 }
2383                 synchronized (sones) {
2384                         sones.remove(identity.getId());
2385                 }
2386                 eventBus.post(new SoneRemovedEvent(sone));
2387         }
2388
2389         /**
2390          * Deletes the temporary image.
2391          *
2392          * @param imageInsertFinishedEvent
2393          *            The event
2394          */
2395         @Subscribe
2396         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2397                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2398                 imageInsertFinishedEvent.image().setKey(imageInsertFinishedEvent.resultingUri().toString());
2399                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2400                 touchConfiguration();
2401         }
2402
2403 }