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.database.PostProvider;
  71 import net.pterodactylus.sone.database.PostReplyProvider;
  72 import net.pterodactylus.sone.database.SoneProvider;
  73 import net.pterodactylus.sone.data.TemporaryImage;
  74 import net.pterodactylus.sone.fcp.FcpInterface;
  75 import net.pterodactylus.sone.fcp.FcpInterface.FullAccessRequired;
  76 import net.pterodactylus.sone.freenet.wot.Identity;
  77 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  78 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  79 import net.pterodactylus.sone.freenet.wot.event.IdentityAddedEvent;
  80 import net.pterodactylus.sone.freenet.wot.event.IdentityRemovedEvent;
  81 import net.pterodactylus.sone.freenet.wot.event.IdentityUpdatedEvent;
  82 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityAddedEvent;
  83 import net.pterodactylus.sone.freenet.wot.event.OwnIdentityRemovedEvent;
  84 import net.pterodactylus.sone.main.SonePlugin;
  85 import net.pterodactylus.sone.utils.IntegerRangePredicate;
  86 import net.pterodactylus.util.config.Configuration;
  87 import net.pterodactylus.util.config.ConfigurationException;
  88 import net.pterodactylus.util.logging.Logging;
  89 import net.pterodactylus.util.number.Numbers;
  90 import net.pterodactylus.util.service.AbstractService;
  91 import net.pterodactylus.util.thread.NamedThreadFactory;
  92
  93 import com.google.common.base.Predicate;
  94 import com.google.common.base.Predicates;
  95 import com.google.common.collect.Collections2;
  96 import com.google.common.eventbus.EventBus;
  97 import com.google.common.eventbus.Subscribe;
  98 import com.google.inject.Inject;
  99
 100 import freenet.keys.FreenetURI;
 101
 102 /**
 103  * The Sone core.
 104  *
 105  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 106  */
 107 public class Core extends AbstractService implements SoneProvider, PostProvider, PostReplyProvider {
 108
 109         /** The logger. */
 110         private static final Logger logger = Logging.getLogger(Core.class);
 111
 112         /** The start time. */
 113         private final long startupTime = System.currentTimeMillis();
 114
 115         /** The options. */
 116         private final Options options = new Options();
 117
 118         /** The preferences. */
 119         private final Preferences preferences = new Preferences(options);
 120
 121         /** The event bus. */
 122         private final EventBus eventBus;
 123
 124         /** The configuration. */
 125         private Configuration configuration;
 126
 127         /** Whether we’re currently saving the configuration. */
 128         private boolean storingConfiguration = false;
 129
 130         /** The identity manager. */
 131         private final IdentityManager identityManager;
 132
 133         /** Interface to freenet. */
 134         private final FreenetInterface freenetInterface;
 135
 136         /** The Sone downloader. */
 137         private final SoneDownloader soneDownloader;
 138
 139         /** The image inserter. */
 140         private final ImageInserter imageInserter;
 141
 142         /** Sone downloader thread-pool. */
 143         private final ExecutorService soneDownloaders = Executors.newFixedThreadPool(10, new NamedThreadFactory("Sone Downloader %2$d"));
 144
 145         /** The update checker. */
 146         private final UpdateChecker updateChecker;
 147
 148         /** The trust updater. */
 149         private final WebOfTrustUpdater webOfTrustUpdater;
 150
 151         /** The FCP interface. */
 152         private volatile FcpInterface fcpInterface;
 153
 154         /** The times Sones were followed. */
 155         private final Map<String, Long> soneFollowingTimes = new HashMap<String, Long>();
 156
 157         /** Locked local Sones. */
 158         /* synchronize on itself. */
 159         private final Set<Sone> lockedSones = new HashSet<Sone>();
 160
 161         /** Sone inserters. */
 162         /* synchronize access on this on sones. */
 163         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 164
 165         /** Sone rescuers. */
 166         /* synchronize access on this on sones. */
 167         private final Map<Sone, SoneRescuer> soneRescuers = new HashMap<Sone, SoneRescuer>();
 168
 169         /** All Sones. */
 170         /* synchronize access on this on itself. */
 171         private final Map<String, Sone> sones = new HashMap<String, Sone>();
 172
 173         /** All known Sones. */
 174         private final Set<String> knownSones = new HashSet<String>();
 175
 176         /** The post builder. */
 177         private final PostBuilderFactory postBuilderFactory;
 178
 179         /** All posts. */
 180         private final Map<String, Post> posts = new HashMap<String, Post>();
 181
 182         /** All known posts. */
 183         private final Set<String> knownPosts = new HashSet<String>();
 184
 185         /** The post reply builder factory. */
 186         private final PostReplyBuilderFactory postReplyBuilderFactory;
 187
 188         /** All replies. */
 189         private final Map<String, PostReply> replies = new HashMap<String, PostReply>();
 190
 191         /** All known replies. */
 192         private final Set<String> knownReplies = new HashSet<String>();
 193
 194         /** All bookmarked posts. */
 195         /* synchronize access on itself. */
 196         private final Set<String> bookmarkedPosts = new HashSet<String>();
 197
 198         /** Trusted identities, sorted by own identities. */
 199         private final Map<OwnIdentity, Set<Identity>> trustedIdentities = Collections.synchronizedMap(new HashMap<OwnIdentity, Set<Identity>>());
 200
 201         /** All known albums. */
 202         private final Map<String, Album> albums = new HashMap<String, Album>();
 203
 204         /** All known images. */
 205         private final Map<String, Image> images = new HashMap<String, Image>();
 206
 207         /** All temporary images. */
 208         private final Map<String, TemporaryImage> temporaryImages = new HashMap<String, TemporaryImage>();
 209
 210         /** Ticker for threads that mark own elements as known. */
 211         private final ScheduledExecutorService localElementTicker = Executors.newScheduledThreadPool(1);
 212
 213         /** The time the configuration was last touched. */
 214         private volatile long lastConfigurationUpdate;
 215
 216         /**
 217          * Creates a new core.
 218          *
 219          * @param configuration
 220          *            The configuration of the core
 221          * @param freenetInterface
 222          *            The freenet interface
 223          * @param identityManager
 224          *            The identity manager
 225          * @param webOfTrustUpdater
 226          *            The WebOfTrust updater
 227          * @param eventBus
 228          *            The event bus
 229          * @param postBuilderFactory
 230          *            The post builder
 231          * @param postReplyBuilderFactory
 232          *            The post reply builder factory
 233          */
 234         @Inject
 235         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager, WebOfTrustUpdater webOfTrustUpdater, EventBus eventBus, PostBuilderFactory postBuilderFactory, PostReplyBuilderFactory postReplyBuilderFactory) {
 236                 super("Sone Core");
 237                 this.configuration = configuration;
 238                 this.freenetInterface = freenetInterface;
 239                 this.identityManager = identityManager;
 240                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 241                 this.imageInserter = new ImageInserter(freenetInterface);
 242                 this.updateChecker = new UpdateChecker(eventBus, freenetInterface);
 243                 this.webOfTrustUpdater = webOfTrustUpdater;
 244                 this.eventBus = eventBus;
 245                 this.postBuilderFactory = postBuilderFactory;
 246                 this.postReplyBuilderFactory = postReplyBuilderFactory;
 247         }
 248
 249         //
 250         // ACCESSORS
 251         //
 252
 253         /**
 254          * Returns the time Sone was started.
 255          *
 256          * @return The startup time (in milliseconds since Jan 1, 1970 UTC)
 257          */
 258         public long getStartupTime() {
 259                 return startupTime;
 260         }
 261
 262         /**
 263          * Sets the configuration to use. This will automatically save the current
 264          * configuration to the given configuration.
 265          *
 266          * @param configuration
 267          *            The new configuration to use
 268          */
 269         public void setConfiguration(Configuration configuration) {
 270                 this.configuration = configuration;
 271                 touchConfiguration();
 272         }
 273
 274         /**
 275          * Returns the options used by the core.
 276          *
 277          * @return The options of the core
 278          */
 279         public Preferences getPreferences() {
 280                 return preferences;
 281         }
 282
 283         /**
 284          * Returns the identity manager used by the core.
 285          *
 286          * @return The identity manager
 287          */
 288         public IdentityManager getIdentityManager() {
 289                 return identityManager;
 290         }
 291
 292         /**
 293          * Returns the update checker.
 294          *
 295          * @return The update checker
 296          */
 297         public UpdateChecker getUpdateChecker() {
 298                 return updateChecker;
 299         }
 300
 301         /**
 302          * Sets the FCP interface to use.
 303          *
 304          * @param fcpInterface
 305          *            The FCP interface to use
 306          */
 307         public void setFcpInterface(FcpInterface fcpInterface) {
 308                 this.fcpInterface = fcpInterface;
 309         }
 310
 311         /**
 312          * Returns the Sone rescuer for the given local Sone.
 313          *
 314          * @param sone
 315          *            The local Sone to get the rescuer for
 316          * @return The Sone rescuer for the given Sone
 317          */
 318         public SoneRescuer getSoneRescuer(Sone sone) {
 319                 checkNotNull(sone, "sone must not be null");
 320                 checkArgument(sone.isLocal(), "sone must be local");
 321                 synchronized (sones) {
 322                         SoneRescuer soneRescuer = soneRescuers.get(sone);
 323                         if (soneRescuer == null) {
 324                                 soneRescuer = new SoneRescuer(this, soneDownloader, sone);
 325                                 soneRescuers.put(sone, soneRescuer);
 326                                 soneRescuer.start();
 327                         }
 328                         return soneRescuer;
 329                 }
 330         }
 331
 332         /**
 333          * Returns whether the given Sone is currently locked.
 334          *
 335          * @param sone
 336          *            The sone to check
 337          * @return {@code true} if the Sone is locked, {@code false} if it is not
 338          */
 339         public boolean isLocked(Sone sone) {
 340                 synchronized (lockedSones) {
 341                         return lockedSones.contains(sone);
 342                 }
 343         }
 344
 345         /**
 346          * Returns all Sones, remote and local.
 347          *
 348          * @return All Sones
 349          */
 350         public Set<Sone> getSones() {
 351                 return new HashSet<Sone>(sones.values());
 352         }
 353
 354         /**
 355          * Returns the Sone with the given ID, regardless whether it’s local or
 356          * remote.
 357          *
 358          * @param id
 359          *            The ID of the Sone to get
 360          * @return The Sone with the given ID, or {@code null} if there is no such
 361          *         Sone
 362          */
 363         @Override
 364         public Sone getSone(String id) {
 365                 synchronized (sones) {
 366                         return sones.get(id);
 367                 }
 368         }
 369
 370         /**
 371          * Checks whether the core knows a Sone with the given ID.
 372          *
 373          * @param id
 374          *            The ID of the Sone
 375          * @return {@code true} if there is a Sone with the given ID, {@code false}
 376          *         otherwise
 377          */
 378         public boolean hasSone(String id) {
 379                 synchronized (sones) {
 380                         return sones.containsKey(id);
 381                 }
 382         }
 383
 384         /**
 385          * Returns all local Sones.
 386          *
 387          * @return All local Sones
 388          */
 389         public Collection<Sone> getLocalSones() {
 390                 synchronized (sones) {
 391                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 392
 393                                 @Override
 394                                 public boolean apply(Sone sone) {
 395                                         return sone.isLocal();
 396                                 }
 397                         });
 398                 }
 399         }
 400
 401         /**
 402          * Returns the local Sone with the given ID, optionally creating a new Sone.
 403          *
 404          * @param id
 405          *            The ID of the Sone
 406          * @param create
 407          *            {@code true} to create a new Sone if none exists,
 408          *            {@code false} to return null if none exists
 409          * @return The Sone with the given ID, or {@code null}
 410          */
 411         public Sone getLocalSone(String id, boolean create) {
 412                 synchronized (sones) {
 413                         Sone sone = sones.get(id);
 414                         if ((sone == null) && create) {
 415                                 sone = new Sone(id, true);
 416                                 sones.put(id, sone);
 417                         }
 418                         if ((sone != null) && !sone.isLocal()) {
 419                                 sone = new Sone(id, true);
 420                                 sones.put(id, sone);
 421                         }
 422                         return sone;
 423                 }
 424         }
 425
 426         /**
 427          * Returns all remote Sones.
 428          *
 429          * @return All remote Sones
 430          */
 431         public Collection<Sone> getRemoteSones() {
 432                 synchronized (sones) {
 433                         return Collections2.filter(sones.values(), new Predicate<Sone>() {
 434
 435                                 @Override
 436                                 public boolean apply(Sone sone) {
 437                                         return !sone.isLocal();
 438                                 }
 439                         });
 440                 }
 441         }
 442
 443         /**
 444          * Returns the remote Sone with the given ID.
 445          *
 446          * @param id
 447          *            The ID of the remote Sone to get
 448          * @param create
 449          *            {@code true} to always create a Sone, {@code false} to return
 450          *            {@code null} if no Sone with the given ID exists
 451          * @return The Sone with the given ID
 452          */
 453         public Sone getRemoteSone(String id, boolean create) {
 454                 synchronized (sones) {
 455                         Sone sone = sones.get(id);
 456                         if ((sone == null) && create && (id != null) && (id.length() == 43)) {
 457                                 sone = new Sone(id, false);
 458                                 sones.put(id, sone);
 459                         }
 460                         return sone;
 461                 }
 462         }
 463
 464         /**
 465          * Returns whether the given Sone has been modified.
 466          *
 467          * @param sone
 468          *            The Sone to check for modifications
 469          * @return {@code true} if a modification has been detected in the Sone,
 470          *         {@code false} otherwise
 471          */
 472         public boolean isModifiedSone(Sone sone) {
 473                 return (soneInserters.containsKey(sone)) ? soneInserters.get(sone).isModified() : false;
 474         }
 475
 476         /**
 477          * Returns the time when the given was first followed by any local Sone.
 478          *
 479          * @param sone
 480          *            The Sone to get the time for
 481          * @return The time (in milliseconds since Jan 1, 1970) the Sone has first
 482          *         been followed, or {@link Long#MAX_VALUE}
 483          */
 484         public long getSoneFollowingTime(Sone sone) {
 485                 synchronized (soneFollowingTimes) {
 486                         if (soneFollowingTimes.containsKey(sone)) {
 487                                 return soneFollowingTimes.get(sone);
 488                         }
 489                         return Long.MAX_VALUE;
 490                 }
 491         }
 492
 493         /**
 494          * Returns whether the target Sone is trusted by the origin Sone.
 495          *
 496          * @param origin
 497          *            The origin Sone
 498          * @param target
 499          *            The target Sone
 500          * @return {@code true} if the target Sone is trusted by the origin Sone
 501          */
 502         public boolean isSoneTrusted(Sone origin, Sone target) {
 503                 checkNotNull(origin, "origin must not be null");
 504                 checkNotNull(target, "target must not be null");
 505                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin’s identity must be an OwnIdentity");
 506                 return trustedIdentities.containsKey(origin.getIdentity()) && trustedIdentities.get(origin.getIdentity()).contains(target.getIdentity());
 507         }
 508
 509         /**
 510          * Returns a post builder.
 511          *
 512          * @return A new post builder
 513          */
 514         public PostBuilder postBuilder() {
 515                 return postBuilderFactory.newPostBuilder();
 516         }
 517
 518         /**
 519          * {@inheritDoc}
 520          */
 521         @Override
 522         public Post getPost(String postId) {
 523                 synchronized (posts) {
 524                         return posts.get(postId);
 525                 }
 526         }
 527
 528         /**
 529          * {@inheritDoc}
 530          */
 531         @Override
 532         public Collection<Post> getDirectedPosts(final String recipientId) {
 533                 checkNotNull(recipientId, "recipient must not be null");
 534                 synchronized (posts) {
 535                         return Collections2.filter(posts.values(), new Predicate<Post>() {
 536
 537                                 @Override
 538                                 public boolean apply(Post post) {
 539                                         return (post.getRecipient() != null) && (post.getRecipient().getId().equals(recipientId));
 540                                 }
 541                         });
 542                 }
 543         }
 544         /**
 545          * Returns a post reply builder.
 546          *
 547          * @return A new post reply builder
 548          */
 549         public PostReplyBuilder postReplyBuilder() {
 550                 return postReplyBuilderFactory.newPostReplyBuilder();
 551         }
 552
 553         /**
 554          * {@inheritDoc}
 555          */
 556         @Override
 557         public PostReply getPostReply(String replyId) {
 558                 synchronized (replies) {
 559                         return replies.get(replyId);
 560                 }
 561         }
 562
 563         /**
 564          * {@inheritDoc}
 565          */
 566         @Override
 567         public List<PostReply> getReplies(Post post) {
 568                 Set<Sone> sones = getSones();
 569                 List<PostReply> replies = new ArrayList<PostReply>();
 570                 for (Sone sone : sones) {
 571                         for (PostReply reply : sone.getReplies()) {
 572                                 if (reply.getPost().equals(post)) {
 573                                         replies.add(reply);
 574                                 }
 575                         }
 576                 }
 577                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 578                 return replies;
 579         }
 580
 581         /**
 582          * Returns all Sones that have liked the given post.
 583          *
 584          * @param post
 585          *            The post to get the liking Sones for
 586          * @return The Sones that like the given post
 587          */
 588         public Set<Sone> getLikes(Post post) {
 589                 Set<Sone> sones = new HashSet<Sone>();
 590                 for (Sone sone : getSones()) {
 591                         if (sone.getLikedPostIds().contains(post.getId())) {
 592                                 sones.add(sone);
 593                         }
 594                 }
 595                 return sones;
 596         }
 597
 598         /**
 599          * Returns all Sones that have liked the given reply.
 600          *
 601          * @param reply
 602          *            The reply to get the liking Sones for
 603          * @return The Sones that like the given reply
 604          */
 605         public Set<Sone> getLikes(PostReply reply) {
 606                 Set<Sone> sones = new HashSet<Sone>();
 607                 for (Sone sone : getSones()) {
 608                         if (sone.getLikedReplyIds().contains(reply.getId())) {
 609                                 sones.add(sone);
 610                         }
 611                 }
 612                 return sones;
 613         }
 614
 615         /**
 616          * Returns whether the given post is bookmarked.
 617          *
 618          * @param post
 619          *            The post to check
 620          * @return {@code true} if the given post is bookmarked, {@code false}
 621          *         otherwise
 622          */
 623         public boolean isBookmarked(Post post) {
 624                 return isPostBookmarked(post.getId());
 625         }
 626
 627         /**
 628          * Returns whether the post with the given ID is bookmarked.
 629          *
 630          * @param id
 631          *            The ID of the post to check
 632          * @return {@code true} if the post with the given ID is bookmarked,
 633          *         {@code false} otherwise
 634          */
 635         public boolean isPostBookmarked(String id) {
 636                 synchronized (bookmarkedPosts) {
 637                         return bookmarkedPosts.contains(id);
 638                 }
 639         }
 640
 641         /**
 642          * Returns all currently known bookmarked posts.
 643          *
 644          * @return All bookmarked posts
 645          */
 646         public Set<Post> getBookmarkedPosts() {
 647                 Set<Post> posts = new HashSet<Post>();
 648                 synchronized (bookmarkedPosts) {
 649                         for (String bookmarkedPostId : bookmarkedPosts) {
 650                                 Post post = getPost(bookmarkedPostId);
 651                                 if (post != null) {
 652                                         posts.add(post);
 653                                 }
 654                         }
 655                 }
 656                 return posts;
 657         }
 658
 659         /**
 660          * Returns the album with the given ID, creating a new album if no album
 661          * with the given ID can be found.
 662          *
 663          * @param albumId
 664          *            The ID of the album
 665          * @return The album with the given ID
 666          */
 667         public Album getAlbum(String albumId) {
 668                 return getAlbum(albumId, true);
 669         }
 670
 671         /**
 672          * Returns the album with the given ID, optionally creating a new album if
 673          * an album with the given ID can not be found.
 674          *
 675          * @param albumId
 676          *            The ID of the album
 677          * @param create
 678          *            {@code true} to create a new album if none exists for the
 679          *            given ID
 680          * @return The album with the given ID, or {@code null} if no album with the
 681          *         given ID exists and {@code create} is {@code false}
 682          */
 683         public Album getAlbum(String albumId, boolean create) {
 684                 synchronized (albums) {
 685                         Album album = albums.get(albumId);
 686                         if (create && (album == null)) {
 687                                 album = new Album(albumId);
 688                                 albums.put(albumId, album);
 689                         }
 690                         return album;
 691                 }
 692         }
 693
 694         /**
 695          * Returns the image with the given ID, creating it if necessary.
 696          *
 697          * @param imageId
 698          *            The ID of the image
 699          * @return The image with the given ID
 700          */
 701         public Image getImage(String imageId) {
 702                 return getImage(imageId, true);
 703         }
 704
 705         /**
 706          * Returns the image with the given ID, optionally creating it if it does
 707          * not exist.
 708          *
 709          * @param imageId
 710          *            The ID of the image
 711          * @param create
 712          *            {@code true} to create an image if none exists with the given
 713          *            ID
 714          * @return The image with the given ID, or {@code null} if none exists and
 715          *         none was created
 716          */
 717         public Image getImage(String imageId, boolean create) {
 718                 synchronized (images) {
 719                         Image image = images.get(imageId);
 720                         if (create && (image == null)) {
 721                                 image = new Image(imageId);
 722                                 images.put(imageId, image);
 723                         }
 724                         return image;
 725                 }
 726         }
 727
 728         /**
 729          * Returns the temporary image with the given ID.
 730          *
 731          * @param imageId
 732          *            The ID of the temporary image
 733          * @return The temporary image, or {@code null} if there is no temporary
 734          *         image with the given ID
 735          */
 736         public TemporaryImage getTemporaryImage(String imageId) {
 737                 synchronized (temporaryImages) {
 738                         return temporaryImages.get(imageId);
 739                 }
 740         }
 741
 742         //
 743         // ACTIONS
 744         //
 745
 746         /**
 747          * Locks the given Sone. A locked Sone will not be inserted by
 748          * {@link SoneInserter} until it is {@link #unlockSone(Sone) unlocked}
 749          * again.
 750          *
 751          * @param sone
 752          *            The sone to lock
 753          */
 754         public void lockSone(Sone sone) {
 755                 synchronized (lockedSones) {
 756                         if (lockedSones.add(sone)) {
 757                                 eventBus.post(new SoneLockedEvent(sone));
 758                         }
 759                 }
 760         }
 761
 762         /**
 763          * Unlocks the given Sone.
 764          *
 765          * @see #lockSone(Sone)
 766          * @param sone
 767          *            The sone to unlock
 768          */
 769         public void unlockSone(Sone sone) {
 770                 synchronized (lockedSones) {
 771                         if (lockedSones.remove(sone)) {
 772                                 eventBus.post(new SoneUnlockedEvent(sone));
 773                         }
 774                 }
 775         }
 776
 777         /**
 778          * Adds a local Sone from the given own identity.
 779          *
 780          * @param ownIdentity
 781          *            The own identity to create a Sone from
 782          * @return The added (or already existing) Sone
 783          */
 784         public Sone addLocalSone(OwnIdentity ownIdentity) {
 785                 if (ownIdentity == null) {
 786                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 787                         return null;
 788                 }
 789                 synchronized (sones) {
 790                         final Sone sone;
 791                         try {
 792                                 sone = getLocalSone(ownIdentity.getId(), true).setIdentity(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 793                         } catch (MalformedURLException mue1) {
 794                                 logger.log(Level.SEVERE, String.format("Could not convert the Identity’s URIs to Freenet URIs: %s, %s", ownIdentity.getInsertUri(), ownIdentity.getRequestUri()), mue1);
 795                                 return null;
 796                         }
 797                         sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 798                         sone.setClient(new Client("Sone", SonePlugin.VERSION.toString()));
 799                         sone.setKnown(true);
 800                         /* TODO - load posts ’n stuff */
 801                         sones.put(ownIdentity.getId(), sone);
 802                         final SoneInserter soneInserter = new SoneInserter(this, eventBus, freenetInterface, sone);
 803                         soneInserters.put(sone, soneInserter);
 804                         sone.setStatus(SoneStatus.idle);
 805                         loadSone(sone);
 806                         soneInserter.start();
 807                         return sone;
 808                 }
 809         }
 810
 811         /**
 812          * Creates a new Sone for the given own identity.
 813          *
 814          * @param ownIdentity
 815          *            The own identity to create a Sone for
 816          * @return The created Sone
 817          */
 818         public Sone createSone(OwnIdentity ownIdentity) {
 819                 if (!webOfTrustUpdater.addContextWait(ownIdentity, "Sone")) {
 820                         logger.log(Level.SEVERE, String.format("Could not add “Sone” context to own identity: %s", ownIdentity));
 821                         return null;
 822                 }
 823                 Sone sone = addLocalSone(ownIdentity);
 824                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
 825                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
 826                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
 827                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
 828                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
 829                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
 830
 831                 followSone(sone, "nwa8lHa271k2QvJ8aa0Ov7IHAV-DFOCFgmDt3X6BpCI");
 832                 touchConfiguration();
 833                 return sone;
 834         }
 835
 836         /**
 837          * Adds the Sone of the given identity.
 838          *
 839          * @param identity
 840          *            The identity whose Sone to add
 841          * @return The added or already existing Sone
 842          */
 843         public Sone addRemoteSone(Identity identity) {
 844                 if (identity == null) {
 845                         logger.log(Level.WARNING, "Given Identity is null!");
 846                         return null;
 847                 }
 848                 synchronized (sones) {
 849                         final Sone sone = getRemoteSone(identity.getId(), true).setIdentity(identity);
 850                         boolean newSone = sone.getRequestUri() == null;
 851                         sone.setRequestUri(SoneUri.create(identity.getRequestUri()));
 852                         sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), (long) 0));
 853                         if (newSone) {
 854                                 synchronized (knownSones) {
 855                                         newSone = !knownSones.contains(sone.getId());
 856                                 }
 857                                 sone.setKnown(!newSone);
 858                                 if (newSone) {
 859                                         eventBus.post(new NewSoneFoundEvent(sone));
 860                                         for (Sone localSone : getLocalSones()) {
 861                                                 if (localSone.getOptions().getBooleanOption("AutoFollow").get()) {
 862                                                         followSone(localSone, sone.getId());
 863                                                 }
 864                                         }
 865                                 }
 866                         }
 867                         soneDownloader.addSone(sone);
 868                         soneDownloaders.execute(new Runnable() {
 869
 870                                 @Override
 871                                 @SuppressWarnings("synthetic-access")
 872                                 public void run() {
 873                                         soneDownloader.fetchSone(sone, sone.getRequestUri());
 874                                 }
 875
 876                         });
 877                         return sone;
 878                 }
 879         }
 880
 881         /**
 882          * Lets the given local Sone follow the Sone with the given ID.
 883          *
 884          * @param sone
 885          *            The local Sone that should follow another Sone
 886          * @param soneId
 887          *            The ID of the Sone to follow
 888          */
 889         public void followSone(Sone sone, String soneId) {
 890                 checkNotNull(sone, "sone must not be null");
 891                 checkNotNull(soneId, "soneId must not be null");
 892                 sone.addFriend(soneId);
 893                 synchronized (soneFollowingTimes) {
 894                         if (!soneFollowingTimes.containsKey(soneId)) {
 895                                 long now = System.currentTimeMillis();
 896                                 soneFollowingTimes.put(soneId, now);
 897                                 Sone followedSone = getSone(soneId);
 898                                 if (followedSone == null) {
 899                                         return;
 900                                 }
 901                                 for (Post post : followedSone.getPosts()) {
 902                                         if (post.getTime() < now) {
 903                                                 markPostKnown(post);
 904                                         }
 905                                 }
 906                                 for (PostReply reply : followedSone.getReplies()) {
 907                                         if (reply.getTime() < now) {
 908                                                 markReplyKnown(reply);
 909                                         }
 910                                 }
 911                         }
 912                 }
 913                 touchConfiguration();
 914         }
 915
 916         /**
 917          * Lets the given local Sone unfollow the Sone with the given ID.
 918          *
 919          * @param sone
 920          *            The local Sone that should unfollow another Sone
 921          * @param soneId
 922          *            The ID of the Sone being unfollowed
 923          */
 924         public void unfollowSone(Sone sone, String soneId) {
 925                 checkNotNull(sone, "sone must not be null");
 926                 checkNotNull(soneId, "soneId must not be null");
 927                 sone.removeFriend(soneId);
 928                 boolean unfollowedSoneStillFollowed = false;
 929                 for (Sone localSone : getLocalSones()) {
 930                         unfollowedSoneStillFollowed |= localSone.hasFriend(soneId);
 931                 }
 932                 if (!unfollowedSoneStillFollowed) {
 933                         synchronized (soneFollowingTimes) {
 934                                 soneFollowingTimes.remove(soneId);
 935                         }
 936                 }
 937                 touchConfiguration();
 938         }
 939
 940         /**
 941          * Sets the trust value of the given origin Sone for the target Sone.
 942          *
 943          * @param origin
 944          *            The origin Sone
 945          * @param target
 946          *            The target Sone
 947          * @param trustValue
 948          *            The trust value (from {@code -100} to {@code 100})
 949          */
 950         public void setTrust(Sone origin, Sone target, int trustValue) {
 951                 checkNotNull(origin, "origin must not be null");
 952                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 953                 checkNotNull(target, "target must not be null");
 954                 checkArgument((trustValue >= -100) && (trustValue <= 100), "trustValue must be within [-100, 100]");
 955                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), trustValue, preferences.getTrustComment());
 956         }
 957
 958         /**
 959          * Removes any trust assignment for the given target Sone.
 960          *
 961          * @param origin
 962          *            The trust origin
 963          * @param target
 964          *            The trust target
 965          */
 966         public void removeTrust(Sone origin, Sone target) {
 967                 checkNotNull(origin, "origin must not be null");
 968                 checkNotNull(target, "target must not be null");
 969                 checkArgument(origin.getIdentity() instanceof OwnIdentity, "origin must be a local Sone");
 970                 webOfTrustUpdater.setTrust((OwnIdentity) origin.getIdentity(), target.getIdentity(), null, null);
 971         }
 972
 973         /**
 974          * Assigns the configured positive trust value for the given target.
 975          *
 976          * @param origin
 977          *            The trust origin
 978          * @param target
 979          *            The trust target
 980          */
 981         public void trustSone(Sone origin, Sone target) {
 982                 setTrust(origin, target, preferences.getPositiveTrust());
 983         }
 984
 985         /**
 986          * Assigns the configured negative trust value for the given target.
 987          *
 988          * @param origin
 989          *            The trust origin
 990          * @param target
 991          *            The trust target
 992          */
 993         public void distrustSone(Sone origin, Sone target) {
 994                 setTrust(origin, target, preferences.getNegativeTrust());
 995         }
 996
 997         /**
 998          * Removes the trust assignment for the given target.
 999          *
1000          * @param origin
1001          *            The trust origin
1002          * @param target
1003          *            The trust target
1004          */
1005         public void untrustSone(Sone origin, Sone target) {
1006                 removeTrust(origin, target);
1007         }
1008
1009         /**
1010          * Updates the stored Sone with the given Sone.
1011          *
1012          * @param sone
1013          *            The updated Sone
1014          */
1015         public void updateSone(Sone sone) {
1016                 updateSone(sone, false);
1017         }
1018
1019         /**
1020          * Updates the stored Sone with the given Sone. If {@code soneRescueMode} is
1021          * {@code true}, an older Sone than the current Sone can be given to restore
1022          * an old state.
1023          *
1024          * @param sone
1025          *            The Sone to update
1026          * @param soneRescueMode
1027          *            {@code true} if the stored Sone should be updated regardless
1028          *            of the age of the given Sone
1029          */
1030         public void updateSone(Sone sone, boolean soneRescueMode) {
1031                 if (hasSone(sone.getId())) {
1032                         Sone storedSone = getSone(sone.getId());
1033                         if (!soneRescueMode && !(sone.getTime() > storedSone.getTime())) {
1034                                 logger.log(Level.FINE, String.format("Downloaded Sone %s is not newer than stored Sone %s.", sone, storedSone));
1035                                 return;
1036                         }
1037                         synchronized (posts) {
1038                                 if (!soneRescueMode) {
1039                                         for (Post post : storedSone.getPosts()) {
1040                                                 posts.remove(post.getId());
1041                                                 if (!sone.getPosts().contains(post)) {
1042                                                         eventBus.post(new PostRemovedEvent(post));
1043                                                 }
1044                                         }
1045                                 }
1046                                 List<Post> storedPosts = storedSone.getPosts();
1047                                 synchronized (knownPosts) {
1048                                         for (Post post : sone.getPosts()) {
1049                                                 PostBuilder postBuilder = postBuilderFactory.newPostBuilder();
1050                                                 postBuilder.copyPost(post).from(storedSone.getId());
1051                                                 Post newPost = postBuilder.build().setKnown(knownPosts.contains(post.getId()));
1052                                                 if (!storedPosts.contains(newPost)) {
1053                                                         if (newPost.getTime() < getSoneFollowingTime(sone)) {
1054                                                                 knownPosts.add(newPost.getId());
1055                                                                 newPost.setKnown(true);
1056                                                         } else if (!knownPosts.contains(newPost.getId())) {
1057                                                                 eventBus.post(new NewPostFoundEvent(newPost));
1058                                                         }
1059                                                 }
1060                                                 posts.put(newPost.getId(), newPost);
1061                                         }
1062                                 }
1063                         }
1064                         synchronized (replies) {
1065                                 if (!soneRescueMode) {
1066                                         for (PostReply reply : storedSone.getReplies()) {
1067                                                 replies.remove(reply.getId());
1068                                                 if (!sone.getReplies().contains(reply)) {
1069                                                         eventBus.post(new PostReplyRemovedEvent(reply));
1070                                                 }
1071                                         }
1072                                 }
1073                                 Set<PostReply> storedReplies = storedSone.getReplies();
1074                                 synchronized (knownReplies) {
1075                                         for (PostReply reply : sone.getReplies()) {
1076                                                 reply.setKnown(knownReplies.contains(reply.getId()));
1077                                                 if (!storedReplies.contains(reply)) {
1078                                                         if (reply.getTime() < getSoneFollowingTime(sone)) {
1079                                                                 knownReplies.add(reply.getId());
1080                                                                 reply.setKnown(true);
1081                                                         } else if (!knownReplies.contains(reply.getId())) {
1082                                                                 eventBus.post(new NewPostReplyFoundEvent(reply));
1083                                                         }
1084                                                 }
1085                                                 replies.put(reply.getId(), reply);
1086                                         }
1087                                 }
1088                         }
1089                         synchronized (albums) {
1090                                 synchronized (images) {
1091                                         for (Album album : storedSone.getAlbums()) {
1092                                                 albums.remove(album.getId());
1093                                                 for (Image image : album.getImages()) {
1094                                                         images.remove(image.getId());
1095                                                 }
1096                                         }
1097                                         for (Album album : sone.getAlbums()) {
1098                                                 albums.put(album.getId(), album);
1099                                                 for (Image image : album.getImages()) {
1100                                                         images.put(image.getId(), image);
1101                                                 }
1102                                         }
1103                                 }
1104                         }
1105                         synchronized (storedSone) {
1106                                 if (!soneRescueMode || (sone.getTime() > storedSone.getTime())) {
1107                                         storedSone.setTime(sone.getTime());
1108                                 }
1109                                 storedSone.setClient(sone.getClient());
1110                                 storedSone.setProfile(sone.getProfile());
1111                                 if (soneRescueMode) {
1112                                         for (Post post : sone.getPosts()) {
1113                                                 storedSone.addPost(post);
1114                                         }
1115                                         for (PostReply reply : sone.getReplies()) {
1116                                                 storedSone.addReply(reply);
1117                                         }
1118                                         for (String likedPostId : sone.getLikedPostIds()) {
1119                                                 storedSone.addLikedPostId(likedPostId);
1120                                         }
1121                                         for (String likedReplyId : sone.getLikedReplyIds()) {
1122                                                 storedSone.addLikedReplyId(likedReplyId);
1123                                         }
1124                                         for (Album album : sone.getAlbums()) {
1125                                                 storedSone.addAlbum(album);
1126                                         }
1127                                 } else {
1128                                         storedSone.setPosts(sone.getPosts());
1129                                         storedSone.setReplies(sone.getReplies());
1130                                         storedSone.setLikePostIds(sone.getLikedPostIds());
1131                                         storedSone.setLikeReplyIds(sone.getLikedReplyIds());
1132                                         storedSone.setAlbums(sone.getAlbums());
1133                                 }
1134                                 storedSone.setLatestEdition(sone.getLatestEdition());
1135                         }
1136                 }
1137         }
1138
1139         /**
1140          * Deletes the given Sone. This will remove the Sone from the
1141          * {@link #getLocalSones() local Sones}, stop its {@link SoneInserter} and
1142          * remove the context from its identity.
1143          *
1144          * @param sone
1145          *            The Sone to delete
1146          */
1147         public void deleteSone(Sone sone) {
1148                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1149                         logger.log(Level.WARNING, String.format("Tried to delete Sone of non-own identity: %s", sone));
1150                         return;
1151                 }
1152                 synchronized (sones) {
1153                         if (!getLocalSones().contains(sone)) {
1154                                 logger.log(Level.WARNING, String.format("Tried to delete non-local Sone: %s", sone));
1155                                 return;
1156                         }
1157                         sones.remove(sone.getId());
1158                         SoneInserter soneInserter = soneInserters.remove(sone);
1159                         soneInserter.stop();
1160                 }
1161                 webOfTrustUpdater.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
1162                 webOfTrustUpdater.removeProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition");
1163                 try {
1164                         configuration.getLongValue("Sone/" + sone.getId() + "/Time").setValue(null);
1165                 } catch (ConfigurationException ce1) {
1166                         logger.log(Level.WARNING, "Could not remove Sone from configuration!", ce1);
1167                 }
1168         }
1169
1170         /**
1171          * Marks the given Sone as known. If the Sone was not {@link Post#isKnown()
1172          * known} before, a {@link MarkSoneKnownEvent} is fired.
1173          *
1174          * @param sone
1175          *            The Sone to mark as known
1176          */
1177         public void markSoneKnown(Sone sone) {
1178                 if (!sone.isKnown()) {
1179                         sone.setKnown(true);
1180                         synchronized (knownSones) {
1181                                 knownSones.add(sone.getId());
1182                         }
1183                         eventBus.post(new MarkSoneKnownEvent(sone));
1184                         touchConfiguration();
1185                 }
1186         }
1187
1188         /**
1189          * Loads and updates the given Sone from the configuration. If any error is
1190          * encountered, loading is aborted and the given Sone is not changed.
1191          *
1192          * @param sone
1193          *            The Sone to load and update
1194          */
1195         public void loadSone(Sone sone) {
1196                 if (!sone.isLocal()) {
1197                         logger.log(Level.FINE, String.format("Tried to load non-local Sone: %s", sone));
1198                         return;
1199                 }
1200
1201                 /* initialize options. */
1202                 sone.getOptions().addBooleanOption("AutoFollow", new DefaultOption<Boolean>(false));
1203                 sone.getOptions().addBooleanOption("EnableSoneInsertNotifications", new DefaultOption<Boolean>(false));
1204                 sone.getOptions().addBooleanOption("ShowNotification/NewSones", new DefaultOption<Boolean>(true));
1205                 sone.getOptions().addBooleanOption("ShowNotification/NewPosts", new DefaultOption<Boolean>(true));
1206                 sone.getOptions().addBooleanOption("ShowNotification/NewReplies", new DefaultOption<Boolean>(true));
1207                 sone.getOptions().addEnumOption("ShowCustomAvatars", new DefaultOption<ShowCustomAvatars>(ShowCustomAvatars.NEVER));
1208
1209                 /* load Sone. */
1210                 String sonePrefix = "Sone/" + sone.getId();
1211                 Long soneTime = configuration.getLongValue(sonePrefix + "/Time").getValue(null);
1212                 if (soneTime == null) {
1213                         logger.log(Level.INFO, "Could not load Sone because no Sone has been saved.");
1214                         return;
1215                 }
1216                 String lastInsertFingerprint = configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").getValue("");
1217
1218                 /* load profile. */
1219                 Profile profile = new Profile(sone);
1220                 profile.setFirstName(configuration.getStringValue(sonePrefix + "/Profile/FirstName").getValue(null));
1221                 profile.setMiddleName(configuration.getStringValue(sonePrefix + "/Profile/MiddleName").getValue(null));
1222                 profile.setLastName(configuration.getStringValue(sonePrefix + "/Profile/LastName").getValue(null));
1223                 profile.setBirthDay(configuration.getIntValue(sonePrefix + "/Profile/BirthDay").getValue(null));
1224                 profile.setBirthMonth(configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").getValue(null));
1225                 profile.setBirthYear(configuration.getIntValue(sonePrefix + "/Profile/BirthYear").getValue(null));
1226
1227                 /* load profile fields. */
1228                 while (true) {
1229                         String fieldPrefix = sonePrefix + "/Profile/Fields/" + profile.getFields().size();
1230                         String fieldName = configuration.getStringValue(fieldPrefix + "/Name").getValue(null);
1231                         if (fieldName == null) {
1232                                 break;
1233                         }
1234                         String fieldValue = configuration.getStringValue(fieldPrefix + "/Value").getValue("");
1235                         profile.addField(fieldName).setValue(fieldValue);
1236                 }
1237
1238                 /* load posts. */
1239                 Set<Post> posts = new HashSet<Post>();
1240                 while (true) {
1241                         String postPrefix = sonePrefix + "/Posts/" + posts.size();
1242                         String postId = configuration.getStringValue(postPrefix + "/ID").getValue(null);
1243                         if (postId == null) {
1244                                 break;
1245                         }
1246                         String postRecipientId = configuration.getStringValue(postPrefix + "/Recipient").getValue(null);
1247                         long postTime = configuration.getLongValue(postPrefix + "/Time").getValue((long) 0);
1248                         String postText = configuration.getStringValue(postPrefix + "/Text").getValue(null);
1249                         if ((postTime == 0) || (postText == null)) {
1250                                 logger.log(Level.WARNING, "Invalid post found, aborting load!");
1251                                 return;
1252                         }
1253                         PostBuilder postBuilder = postBuilderFactory.newPostBuilder().withId(postId).from(sone.getId()).withTime(postTime).withText(postText);
1254                         if ((postRecipientId != null) && (postRecipientId.length() == 43)) {
1255                                 postBuilder.to(postRecipientId);
1256                         }
1257                         posts.add(postBuilder.build());
1258                 }
1259
1260                 /* load replies. */
1261                 Set<PostReply> replies = new HashSet<PostReply>();
1262                 while (true) {
1263                         String replyPrefix = sonePrefix + "/Replies/" + replies.size();
1264                         String replyId = configuration.getStringValue(replyPrefix + "/ID").getValue(null);
1265                         if (replyId == null) {
1266                                 break;
1267                         }
1268                         String postId = configuration.getStringValue(replyPrefix + "/Post/ID").getValue(null);
1269                         long replyTime = configuration.getLongValue(replyPrefix + "/Time").getValue((long) 0);
1270                         String replyText = configuration.getStringValue(replyPrefix + "/Text").getValue(null);
1271                         if ((postId == null) || (replyTime == 0) || (replyText == null)) {
1272                                 logger.log(Level.WARNING, "Invalid reply found, aborting load!");
1273                                 return;
1274                         }
1275                         PostReplyBuilder postReplyBuilder = postReplyBuilderFactory.newPostReplyBuilder();
1276                         postReplyBuilder.withId(replyId).from(sone.getId()).to(postId).withTime(replyTime).withText(replyText);
1277                         replies.add(postReplyBuilder.build());
1278                 }
1279
1280                 /* load post likes. */
1281                 Set<String> likedPostIds = new HashSet<String>();
1282                 while (true) {
1283                         String likedPostId = configuration.getStringValue(sonePrefix + "/Likes/Post/" + likedPostIds.size() + "/ID").getValue(null);
1284                         if (likedPostId == null) {
1285                                 break;
1286                         }
1287                         likedPostIds.add(likedPostId);
1288                 }
1289
1290                 /* load reply likes. */
1291                 Set<String> likedReplyIds = new HashSet<String>();
1292                 while (true) {
1293                         String likedReplyId = configuration.getStringValue(sonePrefix + "/Likes/Reply/" + likedReplyIds.size() + "/ID").getValue(null);
1294                         if (likedReplyId == null) {
1295                                 break;
1296                         }
1297                         likedReplyIds.add(likedReplyId);
1298                 }
1299
1300                 /* load friends. */
1301                 Set<String> friends = new HashSet<String>();
1302                 while (true) {
1303                         String friendId = configuration.getStringValue(sonePrefix + "/Friends/" + friends.size() + "/ID").getValue(null);
1304                         if (friendId == null) {
1305                                 break;
1306                         }
1307                         friends.add(friendId);
1308                 }
1309
1310                 /* load albums. */
1311                 List<Album> topLevelAlbums = new ArrayList<Album>();
1312                 int albumCounter = 0;
1313                 while (true) {
1314                         String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1315                         String albumId = configuration.getStringValue(albumPrefix + "/ID").getValue(null);
1316                         if (albumId == null) {
1317                                 break;
1318                         }
1319                         String albumTitle = configuration.getStringValue(albumPrefix + "/Title").getValue(null);
1320                         String albumDescription = configuration.getStringValue(albumPrefix + "/Description").getValue(null);
1321                         String albumParentId = configuration.getStringValue(albumPrefix + "/Parent").getValue(null);
1322                         String albumImageId = configuration.getStringValue(albumPrefix + "/AlbumImage").getValue(null);
1323                         if ((albumTitle == null) || (albumDescription == null)) {
1324                                 logger.log(Level.WARNING, "Invalid album found, aborting load!");
1325                                 return;
1326                         }
1327                         Album album = getAlbum(albumId).setSone(sone).setTitle(albumTitle).setDescription(albumDescription).setAlbumImage(albumImageId);
1328                         if (albumParentId != null) {
1329                                 Album parentAlbum = getAlbum(albumParentId, false);
1330                                 if (parentAlbum == null) {
1331                                         logger.log(Level.WARNING, String.format("Invalid parent album ID: %s", albumParentId));
1332                                         return;
1333                                 }
1334                                 parentAlbum.addAlbum(album);
1335                         } else {
1336                                 if (!topLevelAlbums.contains(album)) {
1337                                         topLevelAlbums.add(album);
1338                                 }
1339                         }
1340                 }
1341
1342                 /* load images. */
1343                 int imageCounter = 0;
1344                 while (true) {
1345                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1346                         String imageId = configuration.getStringValue(imagePrefix + "/ID").getValue(null);
1347                         if (imageId == null) {
1348                                 break;
1349                         }
1350                         String albumId = configuration.getStringValue(imagePrefix + "/Album").getValue(null);
1351                         String key = configuration.getStringValue(imagePrefix + "/Key").getValue(null);
1352                         String title = configuration.getStringValue(imagePrefix + "/Title").getValue(null);
1353                         String description = configuration.getStringValue(imagePrefix + "/Description").getValue(null);
1354                         Long creationTime = configuration.getLongValue(imagePrefix + "/CreationTime").getValue(null);
1355                         Integer width = configuration.getIntValue(imagePrefix + "/Width").getValue(null);
1356                         Integer height = configuration.getIntValue(imagePrefix + "/Height").getValue(null);
1357                         if ((albumId == null) || (key == null) || (title == null) || (description == null) || (creationTime == null) || (width == null) || (height == null)) {
1358                                 logger.log(Level.WARNING, "Invalid image found, aborting load!");
1359                                 return;
1360                         }
1361                         Album album = getAlbum(albumId, false);
1362                         if (album == null) {
1363                                 logger.log(Level.WARNING, "Invalid album image encountered, aborting load!");
1364                                 return;
1365                         }
1366                         Image image = getImage(imageId).setSone(sone).setCreationTime(creationTime).setKey(key);
1367                         image.setTitle(title).setDescription(description).setWidth(width).setHeight(height);
1368                         album.addImage(image);
1369                 }
1370
1371                 /* load avatar. */
1372                 String avatarId = configuration.getStringValue(sonePrefix + "/Profile/Avatar").getValue(null);
1373                 if (avatarId != null) {
1374                         profile.setAvatar(getImage(avatarId, false));
1375                 }
1376
1377                 /* load options. */
1378                 sone.getOptions().getBooleanOption("AutoFollow").set(configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").getValue(null));
1379                 sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").set(configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").getValue(null));
1380                 sone.getOptions().getBooleanOption("ShowNotification/NewSones").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").getValue(null));
1381                 sone.getOptions().getBooleanOption("ShowNotification/NewPosts").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").getValue(null));
1382                 sone.getOptions().getBooleanOption("ShowNotification/NewReplies").set(configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").getValue(null));
1383                 sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").set(ShowCustomAvatars.valueOf(configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").getValue(ShowCustomAvatars.NEVER.name())));
1384
1385                 /* if we’re still here, Sone was loaded successfully. */
1386                 synchronized (sone) {
1387                         sone.setTime(soneTime);
1388                         sone.setProfile(profile);
1389                         sone.setPosts(posts);
1390                         sone.setReplies(replies);
1391                         sone.setLikePostIds(likedPostIds);
1392                         sone.setLikeReplyIds(likedReplyIds);
1393                         for (String friendId : friends) {
1394                                 followSone(sone, friendId);
1395                         }
1396                         sone.setAlbums(topLevelAlbums);
1397                         soneInserters.get(sone).setLastInsertFingerprint(lastInsertFingerprint);
1398                 }
1399                 synchronized (knownSones) {
1400                         for (String friend : friends) {
1401                                 knownSones.add(friend);
1402                         }
1403                 }
1404                 synchronized (knownPosts) {
1405                         for (Post post : posts) {
1406                                 knownPosts.add(post.getId());
1407                         }
1408                 }
1409                 synchronized (knownReplies) {
1410                         for (PostReply reply : replies) {
1411                                 knownReplies.add(reply.getId());
1412                         }
1413                 }
1414         }
1415
1416         /**
1417          * Creates a new post.
1418          *
1419          * @param sone
1420          *            The Sone that creates the post
1421          * @param text
1422          *            The text of the post
1423          * @return The created post
1424          */
1425         public Post createPost(Sone sone, String text) {
1426                 return createPost(sone, System.currentTimeMillis(), text);
1427         }
1428
1429         /**
1430          * Creates a new post.
1431          *
1432          * @param sone
1433          *            The Sone that creates the post
1434          * @param time
1435          *            The time of the post
1436          * @param text
1437          *            The text of the post
1438          * @return The created post
1439          */
1440         public Post createPost(Sone sone, long time, String text) {
1441                 return createPost(sone, null, time, text);
1442         }
1443
1444         /**
1445          * Creates a new post.
1446          *
1447          * @param sone
1448          *            The Sone that creates the post
1449          * @param recipient
1450          *            The recipient Sone, or {@code null} if this post does not have
1451          *            a recipient
1452          * @param text
1453          *            The text of the post
1454          * @return The created post
1455          */
1456         public Post createPost(Sone sone, Sone recipient, String text) {
1457                 return createPost(sone, recipient, System.currentTimeMillis(), text);
1458         }
1459
1460         /**
1461          * Creates a new post.
1462          *
1463          * @param sone
1464          *            The Sone that creates the post
1465          * @param recipient
1466          *            The recipient Sone, or {@code null} if this post does not have
1467          *            a recipient
1468          * @param time
1469          *            The time of the post
1470          * @param text
1471          *            The text of the post
1472          * @return The created post
1473          */
1474         public Post createPost(Sone sone, Sone recipient, long time, String text) {
1475                 checkNotNull(text, "text must not be null");
1476                 checkArgument(text.trim().length() > 0, "text must not be empty");
1477                 if (!sone.isLocal()) {
1478                         logger.log(Level.FINE, String.format("Tried to create post for non-local Sone: %s", sone));
1479                         return null;
1480                 }
1481                 PostBuilder postBuilder = postBuilderFactory.newPostBuilder();
1482                 postBuilder.from(sone.getId()).randomId().withTime(time).withText(text.trim());
1483                 if (recipient != null) {
1484                         postBuilder.to(recipient.getId());
1485                 }
1486                 final Post post = postBuilder.build();
1487                 synchronized (posts) {
1488                         posts.put(post.getId(), post);
1489                 }
1490                 eventBus.post(new NewPostFoundEvent(post));
1491                 sone.addPost(post);
1492                 touchConfiguration();
1493                 localElementTicker.schedule(new Runnable() {
1494
1495                         /**
1496                          * {@inheritDoc}
1497                          */
1498                         @Override
1499                         public void run() {
1500                                 markPostKnown(post);
1501                         }
1502                 }, 10, TimeUnit.SECONDS);
1503                 return post;
1504         }
1505
1506         /**
1507          * Deletes the given post.
1508          *
1509          * @param post
1510          *            The post to delete
1511          */
1512         public void deletePost(Post post) {
1513                 if (!post.getSone().isLocal()) {
1514                         logger.log(Level.WARNING, String.format("Tried to delete post of non-local Sone: %s", post.getSone()));
1515                         return;
1516                 }
1517                 post.getSone().removePost(post);
1518                 synchronized (posts) {
1519                         posts.remove(post.getId());
1520                 }
1521                 eventBus.post(new PostRemovedEvent(post));
1522                 markPostKnown(post);
1523                 touchConfiguration();
1524         }
1525
1526         /**
1527          * Marks the given post as known, if it is currently not a known post
1528          * (according to {@link Post#isKnown()}).
1529          *
1530          * @param post
1531          *            The post to mark as known
1532          */
1533         public void markPostKnown(Post post) {
1534                 post.setKnown(true);
1535                 synchronized (knownPosts) {
1536                         eventBus.post(new MarkPostKnownEvent(post));
1537                         if (knownPosts.add(post.getId())) {
1538                                 touchConfiguration();
1539                         }
1540                 }
1541                 for (PostReply reply : getReplies(post)) {
1542                         markReplyKnown(reply);
1543                 }
1544         }
1545
1546         /**
1547          * Bookmarks the given post.
1548          *
1549          * @param post
1550          *            The post to bookmark
1551          */
1552         public void bookmark(Post post) {
1553                 bookmarkPost(post.getId());
1554         }
1555
1556         /**
1557          * Bookmarks the post with the given ID.
1558          *
1559          * @param id
1560          *            The ID of the post to bookmark
1561          */
1562         public void bookmarkPost(String id) {
1563                 synchronized (bookmarkedPosts) {
1564                         bookmarkedPosts.add(id);
1565                 }
1566         }
1567
1568         /**
1569          * Removes the given post from the bookmarks.
1570          *
1571          * @param post
1572          *            The post to unbookmark
1573          */
1574         public void unbookmark(Post post) {
1575                 unbookmarkPost(post.getId());
1576         }
1577
1578         /**
1579          * Removes the post with the given ID from the bookmarks.
1580          *
1581          * @param id
1582          *            The ID of the post to unbookmark
1583          */
1584         public void unbookmarkPost(String id) {
1585                 synchronized (bookmarkedPosts) {
1586                         bookmarkedPosts.remove(id);
1587                 }
1588         }
1589
1590         /**
1591          * Creates a new reply.
1592          *
1593          * @param sone
1594          *            The Sone that creates the reply
1595          * @param post
1596          *            The post that this reply refers to
1597          * @param text
1598          *            The text of the reply
1599          * @return The created reply
1600          */
1601         public PostReply createReply(Sone sone, Post post, String text) {
1602                 checkNotNull(text, "text must not be null");
1603                 checkArgument(text.trim().length() > 0, "text must not be empty");
1604                 if (!sone.isLocal()) {
1605                         logger.log(Level.FINE, String.format("Tried to create reply for non-local Sone: %s", sone));
1606                         return null;
1607                 }
1608                 PostReplyBuilder postReplyBuilder = postReplyBuilderFactory.newPostReplyBuilder();
1609                 postReplyBuilder.randomId().from(sone.getId()).to(post.getId()).currentTime().withText(text.trim());
1610                 final PostReply reply = postReplyBuilder.build();
1611                 synchronized (replies) {
1612                         replies.put(reply.getId(), reply);
1613                 }
1614                 synchronized (knownReplies) {
1615                         eventBus.post(new NewPostReplyFoundEvent(reply));
1616                 }
1617                 sone.addReply(reply);
1618                 touchConfiguration();
1619                 localElementTicker.schedule(new Runnable() {
1620
1621                         /**
1622                          * {@inheritDoc}
1623                          */
1624                         @Override
1625                         public void run() {
1626                                 markReplyKnown(reply);
1627                         }
1628                 }, 10, TimeUnit.SECONDS);
1629                 return reply;
1630         }
1631
1632         /**
1633          * Deletes the given reply.
1634          *
1635          * @param reply
1636          *            The reply to delete
1637          */
1638         public void deleteReply(PostReply reply) {
1639                 Sone sone = reply.getSone();
1640                 if (!sone.isLocal()) {
1641                         logger.log(Level.FINE, String.format("Tried to delete non-local reply: %s", reply));
1642                         return;
1643                 }
1644                 synchronized (replies) {
1645                         replies.remove(reply.getId());
1646                 }
1647                 synchronized (knownReplies) {
1648                         markReplyKnown(reply);
1649                         knownReplies.remove(reply.getId());
1650                 }
1651                 sone.removeReply(reply);
1652                 touchConfiguration();
1653         }
1654
1655         /**
1656          * Marks the given reply as known, if it is currently not a known reply
1657          * (according to {@link Reply#isKnown()}).
1658          *
1659          * @param reply
1660          *            The reply to mark as known
1661          */
1662         public void markReplyKnown(PostReply reply) {
1663                 reply.setKnown(true);
1664                 synchronized (knownReplies) {
1665                         eventBus.post(new MarkPostReplyKnownEvent(reply));
1666                         if (knownReplies.add(reply.getId())) {
1667                                 touchConfiguration();
1668                         }
1669                 }
1670         }
1671
1672         /**
1673          * Creates a new top-level album for the given Sone.
1674          *
1675          * @param sone
1676          *            The Sone to create the album for
1677          * @return The new album
1678          */
1679         public Album createAlbum(Sone sone) {
1680                 return createAlbum(sone, null);
1681         }
1682
1683         /**
1684          * Creates a new album for the given Sone.
1685          *
1686          * @param sone
1687          *            The Sone to create the album for
1688          * @param parent
1689          *            The parent of the album (may be {@code null} to create a
1690          *            top-level album)
1691          * @return The new album
1692          */
1693         public Album createAlbum(Sone sone, Album parent) {
1694                 Album album = new Album();
1695                 synchronized (albums) {
1696                         albums.put(album.getId(), album);
1697                 }
1698                 album.setSone(sone);
1699                 if (parent != null) {
1700                         parent.addAlbum(album);
1701                 } else {
1702                         sone.addAlbum(album);
1703                 }
1704                 return album;
1705         }
1706
1707         /**
1708          * Deletes the given album. The owner of the album has to be a local Sone,
1709          * and the album has to be {@link Album#isEmpty() empty} to be deleted.
1710          *
1711          * @param album
1712          *            The album to remove
1713          */
1714         public void deleteAlbum(Album album) {
1715                 checkNotNull(album, "album must not be null");
1716                 checkArgument(album.getSone().isLocal(), "album’s Sone must be a local Sone");
1717                 if (!album.isEmpty()) {
1718                         return;
1719                 }
1720                 if (album.getParent() == null) {
1721                         album.getSone().removeAlbum(album);
1722                 } else {
1723                         album.getParent().removeAlbum(album);
1724                 }
1725                 synchronized (albums) {
1726                         albums.remove(album.getId());
1727                 }
1728                 touchConfiguration();
1729         }
1730
1731         /**
1732          * Creates a new image.
1733          *
1734          * @param sone
1735          *            The Sone creating the image
1736          * @param album
1737          *            The album the image will be inserted into
1738          * @param temporaryImage
1739          *            The temporary image to create the image from
1740          * @return The newly created image
1741          */
1742         public Image createImage(Sone sone, Album album, TemporaryImage temporaryImage) {
1743                 checkNotNull(sone, "sone must not be null");
1744                 checkNotNull(album, "album must not be null");
1745                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1746                 checkArgument(sone.isLocal(), "sone must be a local Sone");
1747                 checkArgument(sone.equals(album.getSone()), "album must belong to the given Sone");
1748                 Image image = new Image(temporaryImage.getId()).setSone(sone).setCreationTime(System.currentTimeMillis());
1749                 album.addImage(image);
1750                 synchronized (images) {
1751                         images.put(image.getId(), image);
1752                 }
1753                 imageInserter.insertImage(temporaryImage, image);
1754                 return image;
1755         }
1756
1757         /**
1758          * Deletes the given image. This method will also delete a matching
1759          * temporary image.
1760          *
1761          * @see #deleteTemporaryImage(TemporaryImage)
1762          * @param image
1763          *            The image to delete
1764          */
1765         public void deleteImage(Image image) {
1766                 checkNotNull(image, "image must not be null");
1767                 checkArgument(image.getSone().isLocal(), "image must belong to a local Sone");
1768                 deleteTemporaryImage(image.getId());
1769                 image.getAlbum().removeImage(image);
1770                 synchronized (images) {
1771                         images.remove(image.getId());
1772                 }
1773                 touchConfiguration();
1774         }
1775
1776         /**
1777          * Creates a new temporary image.
1778          *
1779          * @param mimeType
1780          *            The MIME type of the temporary image
1781          * @param imageData
1782          *            The encoded data of the image
1783          * @return The temporary image
1784          */
1785         public TemporaryImage createTemporaryImage(String mimeType, byte[] imageData) {
1786                 TemporaryImage temporaryImage = new TemporaryImage();
1787                 temporaryImage.setMimeType(mimeType).setImageData(imageData);
1788                 synchronized (temporaryImages) {
1789                         temporaryImages.put(temporaryImage.getId(), temporaryImage);
1790                 }
1791                 return temporaryImage;
1792         }
1793
1794         /**
1795          * Deletes the given temporary image.
1796          *
1797          * @param temporaryImage
1798          *            The temporary image to delete
1799          */
1800         public void deleteTemporaryImage(TemporaryImage temporaryImage) {
1801                 checkNotNull(temporaryImage, "temporaryImage must not be null");
1802                 deleteTemporaryImage(temporaryImage.getId());
1803         }
1804
1805         /**
1806          * Deletes the temporary image with the given ID.
1807          *
1808          * @param imageId
1809          *            The ID of the temporary image to delete
1810          */
1811         public void deleteTemporaryImage(String imageId) {
1812                 checkNotNull(imageId, "imageId must not be null");
1813                 synchronized (temporaryImages) {
1814                         temporaryImages.remove(imageId);
1815                 }
1816                 Image image = getImage(imageId, false);
1817                 if (image != null) {
1818                         imageInserter.cancelImageInsert(image);
1819                 }
1820         }
1821
1822         /**
1823          * Notifies the core that the configuration, either of the core or of a
1824          * single local Sone, has changed, and that the configuration should be
1825          * saved.
1826          */
1827         public void touchConfiguration() {
1828                 lastConfigurationUpdate = System.currentTimeMillis();
1829         }
1830
1831         //
1832         // SERVICE METHODS
1833         //
1834
1835         /**
1836          * Starts the core.
1837          */
1838         @Override
1839         public void serviceStart() {
1840                 loadConfiguration();
1841                 updateChecker.start();
1842                 identityManager.start();
1843                 webOfTrustUpdater.init();
1844                 webOfTrustUpdater.start();
1845         }
1846
1847         /**
1848          * {@inheritDoc}
1849          */
1850         @Override
1851         public void serviceRun() {
1852                 long lastSaved = System.currentTimeMillis();
1853                 while (!shouldStop()) {
1854                         sleep(1000);
1855                         long now = System.currentTimeMillis();
1856                         if (shouldStop() || ((lastConfigurationUpdate > lastSaved) && ((now - lastConfigurationUpdate) > 5000))) {
1857                                 for (Sone localSone : getLocalSones()) {
1858                                         saveSone(localSone);
1859                                 }
1860                                 saveConfiguration();
1861                                 lastSaved = now;
1862                         }
1863                 }
1864         }
1865
1866         /**
1867          * Stops the core.
1868          */
1869         @Override
1870         public void serviceStop() {
1871                 localElementTicker.shutdownNow();
1872                 synchronized (sones) {
1873                         for (Entry<Sone, SoneInserter> soneInserter : soneInserters.entrySet()) {
1874                                 soneInserter.getValue().stop();
1875                                 saveSone(soneInserter.getKey());
1876                         }
1877                 }
1878                 saveConfiguration();
1879                 webOfTrustUpdater.stop();
1880                 updateChecker.stop();
1881                 soneDownloader.stop();
1882                 identityManager.stop();
1883         }
1884
1885         //
1886         // PRIVATE METHODS
1887         //
1888
1889         /**
1890          * Saves the given Sone. This will persist all local settings for the given
1891          * Sone, such as the friends list and similar, private options.
1892          *
1893          * @param sone
1894          *            The Sone to save
1895          */
1896         private synchronized void saveSone(Sone sone) {
1897                 if (!sone.isLocal()) {
1898                         logger.log(Level.FINE, String.format("Tried to save non-local Sone: %s", sone));
1899                         return;
1900                 }
1901                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
1902                         logger.log(Level.WARNING, String.format("Local Sone without OwnIdentity found, refusing to save: %s", sone));
1903                         return;
1904                 }
1905
1906                 logger.log(Level.INFO, String.format("Saving Sone: %s", sone));
1907                 try {
1908                         /* save Sone into configuration. */
1909                         String sonePrefix = "Sone/" + sone.getId();
1910                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
1911                         configuration.getStringValue(sonePrefix + "/LastInsertFingerprint").setValue(soneInserters.get(sone).getLastInsertFingerprint());
1912
1913                         /* save profile. */
1914                         Profile profile = sone.getProfile();
1915                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
1916                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
1917                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
1918                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
1919                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
1920                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
1921                         configuration.getStringValue(sonePrefix + "/Profile/Avatar").setValue(profile.getAvatar());
1922
1923                         /* save profile fields. */
1924                         int fieldCounter = 0;
1925                         for (Field profileField : profile.getFields()) {
1926                                 String fieldPrefix = sonePrefix + "/Profile/Fields/" + fieldCounter++;
1927                                 configuration.getStringValue(fieldPrefix + "/Name").setValue(profileField.getName());
1928                                 configuration.getStringValue(fieldPrefix + "/Value").setValue(profileField.getValue());
1929                         }
1930                         configuration.getStringValue(sonePrefix + "/Profile/Fields/" + fieldCounter + "/Name").setValue(null);
1931
1932                         /* save posts. */
1933                         int postCounter = 0;
1934                         for (Post post : sone.getPosts()) {
1935                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
1936                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
1937                                 configuration.getStringValue(postPrefix + "/Recipient").setValue((post.getRecipient() != null) ? post.getRecipient().getId() : null);
1938                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
1939                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
1940                         }
1941                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
1942
1943                         /* save replies. */
1944                         int replyCounter = 0;
1945                         for (PostReply reply : sone.getReplies()) {
1946                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
1947                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
1948                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
1949                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
1950                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
1951                         }
1952                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
1953
1954                         /* save post likes. */
1955                         int postLikeCounter = 0;
1956                         for (String postId : sone.getLikedPostIds()) {
1957                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
1958                         }
1959                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
1960
1961                         /* save reply likes. */
1962                         int replyLikeCounter = 0;
1963                         for (String replyId : sone.getLikedReplyIds()) {
1964                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
1965                         }
1966                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
1967
1968                         /* save friends. */
1969                         int friendCounter = 0;
1970                         for (String friendId : sone.getFriends()) {
1971                                 configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter++ + "/ID").setValue(friendId);
1972                         }
1973                         configuration.getStringValue(sonePrefix + "/Friends/" + friendCounter + "/ID").setValue(null);
1974
1975                         /* save albums. first, collect in a flat structure, top-level first. */
1976                         List<Album> albums = sone.getAllAlbums();
1977
1978                         int albumCounter = 0;
1979                         for (Album album : albums) {
1980                                 String albumPrefix = sonePrefix + "/Albums/" + albumCounter++;
1981                                 configuration.getStringValue(albumPrefix + "/ID").setValue(album.getId());
1982                                 configuration.getStringValue(albumPrefix + "/Title").setValue(album.getTitle());
1983                                 configuration.getStringValue(albumPrefix + "/Description").setValue(album.getDescription());
1984                                 configuration.getStringValue(albumPrefix + "/Parent").setValue(album.getParent() == null ? null : album.getParent().getId());
1985                                 configuration.getStringValue(albumPrefix + "/AlbumImage").setValue(album.getAlbumImage() == null ? null : album.getAlbumImage().getId());
1986                         }
1987                         configuration.getStringValue(sonePrefix + "/Albums/" + albumCounter + "/ID").setValue(null);
1988
1989                         /* save images. */
1990                         int imageCounter = 0;
1991                         for (Album album : albums) {
1992                                 for (Image image : album.getImages()) {
1993                                         if (!image.isInserted()) {
1994                                                 continue;
1995                                         }
1996                                         String imagePrefix = sonePrefix + "/Images/" + imageCounter++;
1997                                         configuration.getStringValue(imagePrefix + "/ID").setValue(image.getId());
1998                                         configuration.getStringValue(imagePrefix + "/Album").setValue(album.getId());
1999                                         configuration.getStringValue(imagePrefix + "/Key").setValue(image.getKey());
2000                                         configuration.getStringValue(imagePrefix + "/Title").setValue(image.getTitle());
2001                                         configuration.getStringValue(imagePrefix + "/Description").setValue(image.getDescription());
2002                                         configuration.getLongValue(imagePrefix + "/CreationTime").setValue(image.getCreationTime());
2003                                         configuration.getIntValue(imagePrefix + "/Width").setValue(image.getWidth());
2004                                         configuration.getIntValue(imagePrefix + "/Height").setValue(image.getHeight());
2005                                 }
2006                         }
2007                         configuration.getStringValue(sonePrefix + "/Images/" + imageCounter + "/ID").setValue(null);
2008
2009                         /* save options. */
2010                         configuration.getBooleanValue(sonePrefix + "/Options/AutoFollow").setValue(sone.getOptions().getBooleanOption("AutoFollow").getReal());
2011                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewSones").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewSones").getReal());
2012                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewPosts").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewPosts").getReal());
2013                         configuration.getBooleanValue(sonePrefix + "/Options/ShowNotification/NewReplies").setValue(sone.getOptions().getBooleanOption("ShowNotification/NewReplies").getReal());
2014                         configuration.getBooleanValue(sonePrefix + "/Options/EnableSoneInsertNotifications").setValue(sone.getOptions().getBooleanOption("EnableSoneInsertNotifications").getReal());
2015                         configuration.getStringValue(sonePrefix + "/Options/ShowCustomAvatars").setValue(sone.getOptions().<ShowCustomAvatars> getEnumOption("ShowCustomAvatars").get().name());
2016
2017                         configuration.save();
2018
2019                         webOfTrustUpdater.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
2020
2021                         logger.log(Level.INFO, String.format("Sone %s saved.", sone));
2022                 } catch (ConfigurationException ce1) {
2023                         logger.log(Level.WARNING, String.format("Could not save Sone: %s", sone), ce1);
2024                 }
2025         }
2026
2027         /**
2028          * Saves the current options.
2029          */
2030         private void saveConfiguration() {
2031                 synchronized (configuration) {
2032                         if (storingConfiguration) {
2033                                 logger.log(Level.FINE, "Already storing configuration…");
2034                                 return;
2035                         }
2036                         storingConfiguration = true;
2037                 }
2038
2039                 /* store the options first. */
2040                 try {
2041                         configuration.getIntValue("Option/ConfigurationVersion").setValue(0);
2042                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
2043                         configuration.getIntValue("Option/PostsPerPage").setValue(options.getIntegerOption("PostsPerPage").getReal());
2044                         configuration.getIntValue("Option/ImagesPerPage").setValue(options.getIntegerOption("ImagesPerPage").getReal());
2045                         configuration.getIntValue("Option/CharactersPerPost").setValue(options.getIntegerOption("CharactersPerPost").getReal());
2046                         configuration.getIntValue("Option/PostCutOffLength").setValue(options.getIntegerOption("PostCutOffLength").getReal());
2047                         configuration.getBooleanValue("Option/RequireFullAccess").setValue(options.getBooleanOption("RequireFullAccess").getReal());
2048                         configuration.getIntValue("Option/PositiveTrust").setValue(options.getIntegerOption("PositiveTrust").getReal());
2049                         configuration.getIntValue("Option/NegativeTrust").setValue(options.getIntegerOption("NegativeTrust").getReal());
2050                         configuration.getStringValue("Option/TrustComment").setValue(options.getStringOption("TrustComment").getReal());
2051                         configuration.getBooleanValue("Option/ActivateFcpInterface").setValue(options.getBooleanOption("ActivateFcpInterface").getReal());
2052                         configuration.getIntValue("Option/FcpFullAccessRequired").setValue(options.getIntegerOption("FcpFullAccessRequired").getReal());
2053
2054                         /* save known Sones. */
2055                         int soneCounter = 0;
2056                         synchronized (knownSones) {
2057                                 for (String knownSoneId : knownSones) {
2058                                         configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").setValue(knownSoneId);
2059                                 }
2060                                 configuration.getStringValue("KnownSone/" + soneCounter + "/ID").setValue(null);
2061                         }
2062
2063                         /* save Sone following times. */
2064                         soneCounter = 0;
2065                         synchronized (soneFollowingTimes) {
2066                                 for (Entry<String, Long> soneFollowingTime : soneFollowingTimes.entrySet()) {
2067                                         configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(soneFollowingTime.getKey());
2068                                         configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").setValue(soneFollowingTime.getValue());
2069                                         ++soneCounter;
2070                                 }
2071                                 configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").setValue(null);
2072                         }
2073
2074                         /* save known posts. */
2075                         int postCounter = 0;
2076                         synchronized (knownPosts) {
2077                                 for (String knownPostId : knownPosts) {
2078                                         configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").setValue(knownPostId);
2079                                 }
2080                                 configuration.getStringValue("KnownPosts/" + postCounter + "/ID").setValue(null);
2081                         }
2082
2083                         /* save known replies. */
2084                         int replyCounter = 0;
2085                         synchronized (knownReplies) {
2086                                 for (String knownReplyId : knownReplies) {
2087                                         configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").setValue(knownReplyId);
2088                                 }
2089                                 configuration.getStringValue("KnownReplies/" + replyCounter + "/ID").setValue(null);
2090                         }
2091
2092                         /* save bookmarked posts. */
2093                         int bookmarkedPostCounter = 0;
2094                         synchronized (bookmarkedPosts) {
2095                                 for (String bookmarkedPostId : bookmarkedPosts) {
2096                                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(bookmarkedPostId);
2097                                 }
2098                         }
2099                         configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").setValue(null);
2100
2101                         /* now save it. */
2102                         configuration.save();
2103
2104                 } catch (ConfigurationException ce1) {
2105                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
2106                 } finally {
2107                         synchronized (configuration) {
2108                                 storingConfiguration = false;
2109                         }
2110                 }
2111         }
2112
2113         /**
2114          * Loads the configuration.
2115          */
2116         @SuppressWarnings("unchecked")
2117         private void loadConfiguration() {
2118                 /* create options. */
2119                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new IntegerRangePredicate(0, Integer.MAX_VALUE), new OptionWatcher<Integer>() {
2120
2121                         @Override
2122                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2123                                 SoneInserter.setInsertionDelay(newValue);
2124                         }
2125
2126                 }));
2127                 options.addIntegerOption("PostsPerPage", new DefaultOption<Integer>(10, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2128                 options.addIntegerOption("ImagesPerPage", new DefaultOption<Integer>(9, new IntegerRangePredicate(1, Integer.MAX_VALUE)));
2129                 options.addIntegerOption("CharactersPerPost", new DefaultOption<Integer>(400, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2130                 options.addIntegerOption("PostCutOffLength", new DefaultOption<Integer>(200, Predicates.<Integer> or(new IntegerRangePredicate(50, Integer.MAX_VALUE), Predicates.equalTo(-1))));
2131                 options.addBooleanOption("RequireFullAccess", new DefaultOption<Boolean>(false));
2132                 options.addIntegerOption("PositiveTrust", new DefaultOption<Integer>(75, new IntegerRangePredicate(0, 100)));
2133                 options.addIntegerOption("NegativeTrust", new DefaultOption<Integer>(-25, new IntegerRangePredicate(-100, 100)));
2134                 options.addStringOption("TrustComment", new DefaultOption<String>("Set from Sone Web Interface"));
2135                 options.addBooleanOption("ActivateFcpInterface", new DefaultOption<Boolean>(false, new OptionWatcher<Boolean>() {
2136
2137                         @Override
2138                         @SuppressWarnings("synthetic-access")
2139                         public void optionChanged(Option<Boolean> option, Boolean oldValue, Boolean newValue) {
2140                                 fcpInterface.setActive(newValue);
2141                         }
2142                 }));
2143                 options.addIntegerOption("FcpFullAccessRequired", new DefaultOption<Integer>(2, new OptionWatcher<Integer>() {
2144
2145                         @Override
2146                         @SuppressWarnings("synthetic-access")
2147                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
2148                                 fcpInterface.setFullAccessRequired(FullAccessRequired.values()[newValue]);
2149                         }
2150
2151                 }));
2152
2153                 loadConfigurationValue("InsertionDelay");
2154                 loadConfigurationValue("PostsPerPage");
2155                 loadConfigurationValue("ImagesPerPage");
2156                 loadConfigurationValue("CharactersPerPost");
2157                 loadConfigurationValue("PostCutOffLength");
2158                 options.getBooleanOption("RequireFullAccess").set(configuration.getBooleanValue("Option/RequireFullAccess").getValue(null));
2159                 loadConfigurationValue("PositiveTrust");
2160                 loadConfigurationValue("NegativeTrust");
2161                 options.getStringOption("TrustComment").set(configuration.getStringValue("Option/TrustComment").getValue(null));
2162                 options.getBooleanOption("ActivateFcpInterface").set(configuration.getBooleanValue("Option/ActivateFcpInterface").getValue(null));
2163                 options.getIntegerOption("FcpFullAccessRequired").set(configuration.getIntValue("Option/FcpFullAccessRequired").getValue(null));
2164
2165                 /* load known Sones. */
2166                 int soneCounter = 0;
2167                 while (true) {
2168                         String knownSoneId = configuration.getStringValue("KnownSone/" + soneCounter++ + "/ID").getValue(null);
2169                         if (knownSoneId == null) {
2170                                 break;
2171                         }
2172                         synchronized (knownSones) {
2173                                 knownSones.add(knownSoneId);
2174                         }
2175                 }
2176
2177                 /* load Sone following times. */
2178                 soneCounter = 0;
2179                 while (true) {
2180                         String soneId = configuration.getStringValue("SoneFollowingTimes/" + soneCounter + "/Sone").getValue(null);
2181                         if (soneId == null) {
2182                                 break;
2183                         }
2184                         long time = configuration.getLongValue("SoneFollowingTimes/" + soneCounter + "/Time").getValue(Long.MAX_VALUE);
2185                         Sone followedSone = getSone(soneId);
2186                         if (followedSone == null) {
2187                                 logger.log(Level.WARNING, String.format("Ignoring Sone with invalid ID: %s", soneId));
2188                         } else {
2189                                 synchronized (soneFollowingTimes) {
2190                                         soneFollowingTimes.put(soneId, time);
2191                                 }
2192                         }
2193                         ++soneCounter;
2194                 }
2195
2196                 /* load known posts. */
2197                 int postCounter = 0;
2198                 while (true) {
2199                         String knownPostId = configuration.getStringValue("KnownPosts/" + postCounter++ + "/ID").getValue(null);
2200                         if (knownPostId == null) {
2201                                 break;
2202                         }
2203                         synchronized (knownPosts) {
2204                                 knownPosts.add(knownPostId);
2205                         }
2206                 }
2207
2208                 /* load known replies. */
2209                 int replyCounter = 0;
2210                 while (true) {
2211                         String knownReplyId = configuration.getStringValue("KnownReplies/" + replyCounter++ + "/ID").getValue(null);
2212                         if (knownReplyId == null) {
2213                                 break;
2214                         }
2215                         synchronized (knownReplies) {
2216                                 knownReplies.add(knownReplyId);
2217                         }
2218                 }
2219
2220                 /* load bookmarked posts. */
2221                 int bookmarkedPostCounter = 0;
2222                 while (true) {
2223                         String bookmarkedPostId = configuration.getStringValue("Bookmarks/Post/" + bookmarkedPostCounter++ + "/ID").getValue(null);
2224                         if (bookmarkedPostId == null) {
2225                                 break;
2226                         }
2227                         synchronized (bookmarkedPosts) {
2228                                 bookmarkedPosts.add(bookmarkedPostId);
2229                         }
2230                 }
2231
2232         }
2233
2234         /**
2235          * Loads an {@link Integer} configuration value for the option with the
2236          * given name, logging validation failures.
2237          *
2238          * @param optionName
2239          *            The name of the option to load
2240          */
2241         private void loadConfigurationValue(String optionName) {
2242                 try {
2243                         options.getIntegerOption(optionName).set(configuration.getIntValue("Option/" + optionName).getValue(null));
2244                 } catch (IllegalArgumentException iae1) {
2245                         logger.log(Level.WARNING, String.format("Invalid value for %s in configuration, using default.", optionName));
2246                 }
2247         }
2248
2249         /**
2250          * Notifies the core that a new {@link OwnIdentity} was added.
2251          *
2252          * @param ownIdentityAddedEvent
2253          *            The event
2254          */
2255         @Subscribe
2256         public void ownIdentityAdded(OwnIdentityAddedEvent ownIdentityAddedEvent) {
2257                 OwnIdentity ownIdentity = ownIdentityAddedEvent.ownIdentity();
2258                 logger.log(Level.FINEST, String.format("Adding OwnIdentity: %s", ownIdentity));
2259                 if (ownIdentity.hasContext("Sone")) {
2260                         trustedIdentities.put(ownIdentity, Collections.synchronizedSet(new HashSet<Identity>()));
2261                         addLocalSone(ownIdentity);
2262                 }
2263         }
2264
2265         /**
2266          * Notifies the core that an {@link OwnIdentity} was removed.
2267          *
2268          * @param ownIdentityRemovedEvent
2269          *            The event
2270          */
2271         @Subscribe
2272         public void ownIdentityRemoved(OwnIdentityRemovedEvent ownIdentityRemovedEvent) {
2273                 OwnIdentity ownIdentity = ownIdentityRemovedEvent.ownIdentity();
2274                 logger.log(Level.FINEST, String.format("Removing OwnIdentity: %s", ownIdentity));
2275                 trustedIdentities.remove(ownIdentity);
2276         }
2277
2278         /**
2279          * Notifies the core that a new {@link Identity} was added.
2280          *
2281          * @param identityAddedEvent
2282          *            The event
2283          */
2284         @Subscribe
2285         public void identityAdded(IdentityAddedEvent identityAddedEvent) {
2286                 Identity identity = identityAddedEvent.identity();
2287                 logger.log(Level.FINEST, String.format("Adding Identity: %s", identity));
2288                 trustedIdentities.get(identityAddedEvent.ownIdentity()).add(identity);
2289                 addRemoteSone(identity);
2290         }
2291
2292         /**
2293          * Notifies the core that an {@link Identity} was updated.
2294          *
2295          * @param identityUpdatedEvent
2296          *            The event
2297          */
2298         @Subscribe
2299         public void identityUpdated(IdentityUpdatedEvent identityUpdatedEvent) {
2300                 final Identity identity = identityUpdatedEvent.identity();
2301                 soneDownloaders.execute(new Runnable() {
2302
2303                         @Override
2304                         @SuppressWarnings("synthetic-access")
2305                         public void run() {
2306                                 Sone sone = getRemoteSone(identity.getId(), false);
2307                                 sone.setIdentity(identity);
2308                                 sone.setLatestEdition(Numbers.safeParseLong(identity.getProperty("Sone.LatestEdition"), sone.getLatestEdition()));
2309                                 soneDownloader.addSone(sone);
2310                                 soneDownloader.fetchSone(sone);
2311                         }
2312                 });
2313         }
2314
2315         /**
2316          * Notifies the core that an {@link Identity} was removed.
2317          *
2318          * @param identityRemovedEvent
2319          *            The event
2320          */
2321         @Subscribe
2322         public void identityRemoved(IdentityRemovedEvent identityRemovedEvent) {
2323                 OwnIdentity ownIdentity = identityRemovedEvent.ownIdentity();
2324                 Identity identity = identityRemovedEvent.identity();
2325                 trustedIdentities.get(ownIdentity).remove(identity);
2326                 boolean foundIdentity = false;
2327                 for (Entry<OwnIdentity, Set<Identity>> trustedIdentity : trustedIdentities.entrySet()) {
2328                         if (trustedIdentity.getKey().equals(ownIdentity)) {
2329                                 continue;
2330                         }
2331                         if (trustedIdentity.getValue().contains(identity)) {
2332                                 foundIdentity = true;
2333                         }
2334                 }
2335                 if (foundIdentity) {
2336                         /* some local identity still trusts this identity, don’t remove. */
2337                         return;
2338                 }
2339                 Sone sone = getSone(identity.getId());
2340                 if (sone == null) {
2341                         /* TODO - we don’t have the Sone anymore. should this happen? */
2342                         return;
2343                 }
2344                 synchronized (posts) {
2345                         synchronized (knownPosts) {
2346                                 for (Post post : sone.getPosts()) {
2347                                         posts.remove(post.getId());
2348                                         eventBus.post(new PostRemovedEvent(post));
2349                                 }
2350                         }
2351                 }
2352                 synchronized (replies) {
2353                         synchronized (knownReplies) {
2354                                 for (PostReply reply : sone.getReplies()) {
2355                                         replies.remove(reply.getId());
2356                                         eventBus.post(new PostReplyRemovedEvent(reply));
2357                                 }
2358                         }
2359                 }
2360                 synchronized (sones) {
2361                         sones.remove(identity.getId());
2362                 }
2363                 eventBus.post(new SoneRemovedEvent(sone));
2364         }
2365
2366         /**
2367          * Deletes the temporary image.
2368          *
2369          * @param imageInsertFinishedEvent
2370          *            The event
2371          */
2372         @Subscribe
2373         public void imageInsertFinished(ImageInsertFinishedEvent imageInsertFinishedEvent) {
2374                 logger.log(Level.WARNING, String.format("Image insert finished for %s: %s", imageInsertFinishedEvent.image(), imageInsertFinishedEvent.resultingUri()));
2375                 imageInsertFinishedEvent.image().setKey(imageInsertFinishedEvent.resultingUri().toString());
2376                 deleteTemporaryImage(imageInsertFinishedEvent.image().getId());
2377                 touchConfiguration();
2378         }
2379
2380 }