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

   1 /*
   2  * Sone - Core.java - Copyright © 2010 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 java.net.MalformedURLException;
  21 import java.util.ArrayList;
  22 import java.util.Collections;
  23 import java.util.HashMap;
  24 import java.util.HashSet;
  25 import java.util.List;
  26 import java.util.Map;
  27 import java.util.Set;
  28 import java.util.logging.Level;
  29 import java.util.logging.Logger;
  30
  31 import net.pterodactylus.sone.core.Options.DefaultOption;
  32 import net.pterodactylus.sone.core.Options.Option;
  33 import net.pterodactylus.sone.core.Options.OptionWatcher;
  34 import net.pterodactylus.sone.data.Post;
  35 import net.pterodactylus.sone.data.Profile;
  36 import net.pterodactylus.sone.data.Reply;
  37 import net.pterodactylus.sone.data.Sone;
  38 import net.pterodactylus.sone.freenet.wot.Identity;
  39 import net.pterodactylus.sone.freenet.wot.IdentityListener;
  40 import net.pterodactylus.sone.freenet.wot.IdentityManager;
  41 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  42 import net.pterodactylus.util.config.Configuration;
  43 import net.pterodactylus.util.config.ConfigurationException;
  44 import net.pterodactylus.util.logging.Logging;
  45 import net.pterodactylus.util.number.Numbers;
  46 import freenet.keys.FreenetURI;
  47
  48 /**
  49  * The Sone core.
  50  *
  51  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  52  */
  53 public class Core implements IdentityListener {
  54
  55         /**
  56          * Enumeration for the possible states of a {@link Sone}.
  57          *
  58          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  59          */
  60         public enum SoneStatus {
  61
  62                 /** The Sone is unknown, i.e. not yet downloaded. */
  63                 unknown,
  64
  65                 /** The Sone is idle, i.e. not being downloaded or inserted. */
  66                 idle,
  67
  68                 /** The Sone is currently being inserted. */
  69                 inserting,
  70
  71                 /** The Sone is currently being downloaded. */
  72                 downloading,
  73         }
  74
  75         /** The logger. */
  76         private static final Logger logger = Logging.getLogger(Core.class);
  77
  78         /** The options. */
  79         private final Options options = new Options();
  80
  81         /** The configuration. */
  82         private final Configuration configuration;
  83
  84         /** The identity manager. */
  85         private final IdentityManager identityManager;
  86
  87         /** Interface to freenet. */
  88         private final FreenetInterface freenetInterface;
  89
  90         /** The Sone downloader. */
  91         private final SoneDownloader soneDownloader;
  92
  93         /** The Sones’ statuses. */
  94         /* synchronize access on itself. */
  95         private final Map<Sone, SoneStatus> soneStatuses = new HashMap<Sone, SoneStatus>();
  96
  97         /** Sone inserters. */
  98         /* synchronize access on this on localSones. */
  99         private final Map<Sone, SoneInserter> soneInserters = new HashMap<Sone, SoneInserter>();
 100
 101         /** All local Sones. */
 102         /* synchronize access on this on itself. */
 103         private Map<String, Sone> localSones = new HashMap<String, Sone>();
 104
 105         /** All remote Sones. */
 106         /* synchronize access on this on itself. */
 107         private Map<String, Sone> remoteSones = new HashMap<String, Sone>();
 108
 109         /** All posts. */
 110         private Map<String, Post> posts = new HashMap<String, Post>();
 111
 112         /** All replies. */
 113         private Map<String, Reply> replies = new HashMap<String, Reply>();
 114
 115         /**
 116          * Creates a new core.
 117          *
 118          * @param configuration
 119          *            The configuration of the core
 120          * @param freenetInterface
 121          *            The freenet interface
 122          * @param identityManager
 123          *            The identity manager
 124          */
 125         public Core(Configuration configuration, FreenetInterface freenetInterface, IdentityManager identityManager) {
 126                 this.configuration = configuration;
 127                 this.freenetInterface = freenetInterface;
 128                 this.identityManager = identityManager;
 129                 this.soneDownloader = new SoneDownloader(this, freenetInterface);
 130         }
 131
 132         //
 133         // ACCESSORS
 134         //
 135
 136         /**
 137          * Returns the options used by the core.
 138          *
 139          * @return The options of the core
 140          */
 141         public Options getOptions() {
 142                 return options;
 143         }
 144
 145         /**
 146          * Returns the identity manager used by the core.
 147          *
 148          * @return The identity manager
 149          */
 150         public IdentityManager getIdentityManager() {
 151                 return identityManager;
 152         }
 153
 154         /**
 155          * Returns the status of the given Sone.
 156          *
 157          * @param sone
 158          *            The Sone to get the status for
 159          * @return The status of the Sone
 160          */
 161         public SoneStatus getSoneStatus(Sone sone) {
 162                 synchronized (soneStatuses) {
 163                         return soneStatuses.get(sone);
 164                 }
 165         }
 166
 167         /**
 168          * Sets the status of the given Sone.
 169          *
 170          * @param sone
 171          *            The Sone to set the status of
 172          * @param soneStatus
 173          *            The status to set
 174          */
 175         public void setSoneStatus(Sone sone, SoneStatus soneStatus) {
 176                 synchronized (soneStatuses) {
 177                         soneStatuses.put(sone, soneStatus);
 178                 }
 179         }
 180
 181         /**
 182          * Returns all Sones, remote and local.
 183          *
 184          * @return All Sones
 185          */
 186         public Set<Sone> getSones() {
 187                 Set<Sone> allSones = new HashSet<Sone>();
 188                 allSones.addAll(getLocalSones());
 189                 allSones.addAll(getRemoteSones());
 190                 return allSones;
 191         }
 192
 193         /**
 194          * Returns the Sone with the given ID, regardless whether it’s local or
 195          * remote.
 196          *
 197          * @param id
 198          *            The ID of the Sone to get
 199          * @return The Sone with the given ID, or {@code null} if there is no such
 200          *         Sone
 201          */
 202         public Sone getSone(String id) {
 203                 Sone sone = getRemoteSone(id);
 204                 if (sone != null) {
 205                         return sone;
 206                 }
 207                 sone = getLocalSone(id);
 208                 return sone;
 209         }
 210
 211         /**
 212          * Returns whether the given Sone is a local Sone.
 213          *
 214          * @param sone
 215          *            The Sone to check for its locality
 216          * @return {@code true} if the given Sone is local, {@code false} otherwise
 217          */
 218         public boolean isLocalSone(Sone sone) {
 219                 synchronized (localSones) {
 220                         return localSones.containsKey(sone.getId());
 221                 }
 222         }
 223
 224         /**
 225          * Returns all local Sones.
 226          *
 227          * @return All local Sones
 228          */
 229         public Set<Sone> getLocalSones() {
 230                 synchronized (localSones) {
 231                         return new HashSet<Sone>(localSones.values());
 232                 }
 233         }
 234
 235         /**
 236          * Returns the local Sone with the given ID.
 237          *
 238          * @param id
 239          *            The ID of the Sone to get
 240          * @return The Sone, or {@code null} if there is no Sone with the given ID
 241          */
 242         public Sone getLocalSone(String id) {
 243                 synchronized (localSones) {
 244                         return localSones.get(id);
 245                 }
 246         }
 247
 248         /**
 249          * Returns all remote Sones.
 250          *
 251          * @return All remote Sones
 252          */
 253         public Set<Sone> getRemoteSones() {
 254                 synchronized (remoteSones) {
 255                         return new HashSet<Sone>(remoteSones.values());
 256                 }
 257         }
 258
 259         /**
 260          * Returns the remote Sone with the given ID.
 261          *
 262          * @param id
 263          *            The ID of the remote Sone to get
 264          * @return The Sone, or {@code null} if there is no such Sone
 265          */
 266         public Sone getRemoteSone(String id) {
 267                 synchronized (remoteSones) {
 268                         return remoteSones.get(id);
 269                 }
 270         }
 271
 272         /**
 273          * Returns whether the given Sone is a remote Sone.
 274          *
 275          * @param sone
 276          *            The Sone to check
 277          * @return {@code true} if the given Sone is a remote Sone, {@code false}
 278          *         otherwise
 279          */
 280         public boolean isRemoteSone(Sone sone) {
 281                 synchronized (remoteSones) {
 282                         return remoteSones.containsKey(sone.getId());
 283                 }
 284         }
 285
 286         /**
 287          * Returns the post with the given ID.
 288          *
 289          * @param postId
 290          *            The ID of the post to get
 291          * @return The post, or {@code null} if there is no such post
 292          */
 293         public Post getPost(String postId) {
 294                 synchronized (posts) {
 295                         Post post = posts.get(postId);
 296                         if (post == null) {
 297                                 post = new Post(postId);
 298                                 posts.put(postId, post);
 299                         }
 300                         return post;
 301                 }
 302         }
 303
 304         /**
 305          * Returns the reply with the given ID.
 306          *
 307          * @param replyId
 308          *            The ID of the reply to get
 309          * @return The reply, or {@code null} if there is no such reply
 310          */
 311         public Reply getReply(String replyId) {
 312                 synchronized (replies) {
 313                         Reply reply = replies.get(replyId);
 314                         if (reply == null) {
 315                                 reply = new Reply(replyId);
 316                                 replies.put(replyId, reply);
 317                         }
 318                         return reply;
 319                 }
 320         }
 321
 322         /**
 323          * Returns all replies for the given post, order ascending by time.
 324          *
 325          * @param post
 326          *            The post to get all replies for
 327          * @return All replies for the given post
 328          */
 329         public List<Reply> getReplies(Post post) {
 330                 Set<Sone> sones = getSones();
 331                 List<Reply> replies = new ArrayList<Reply>();
 332                 for (Sone sone : sones) {
 333                         for (Reply reply : sone.getReplies()) {
 334                                 if (reply.getPost().equals(post)) {
 335                                         replies.add(reply);
 336                                 }
 337                         }
 338                 }
 339                 Collections.sort(replies, Reply.TIME_COMPARATOR);
 340                 return replies;
 341         }
 342
 343         /**
 344          * Returns all Sones that have liked the given post.
 345          *
 346          * @param post
 347          *            The post to get the liking Sones for
 348          * @return The Sones that like the given post
 349          */
 350         public Set<Sone> getLikes(Post post) {
 351                 Set<Sone> sones = new HashSet<Sone>();
 352                 for (Sone sone : getSones()) {
 353                         if (sone.getLikedPostIds().contains(post.getId())) {
 354                                 sones.add(sone);
 355                         }
 356                 }
 357                 return sones;
 358         }
 359
 360         /**
 361          * Returns all Sones that have liked the given reply.
 362          *
 363          * @param reply
 364          *            The reply to get the liking Sones for
 365          * @return The Sones that like the given reply
 366          */
 367         public Set<Sone> getLikes(Reply reply) {
 368                 Set<Sone> sones = new HashSet<Sone>();
 369                 for (Sone sone : getSones()) {
 370                         if (sone.getLikedPostIds().contains(reply.getId())) {
 371                                 sones.add(sone);
 372                         }
 373                 }
 374                 return sones;
 375         }
 376
 377         //
 378         // ACTIONS
 379         //
 380
 381         /**
 382          * Adds a local Sone from the given ID which has to be the ID of an own
 383          * identity.
 384          *
 385          * @param id
 386          *            The ID of an own identity to add a Sone for
 387          * @return The added (or already existing) Sone
 388          */
 389         public Sone addLocalSone(String id) {
 390                 synchronized (localSones) {
 391                         if (localSones.containsKey(id)) {
 392                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", id);
 393                                 return localSones.get(id);
 394                         }
 395                         OwnIdentity ownIdentity = identityManager.getOwnIdentity(id);
 396                         if (ownIdentity == null) {
 397                                 logger.log(Level.INFO, "Invalid Sone ID: %s", id);
 398                                 return null;
 399                         }
 400                         return addLocalSone(ownIdentity);
 401                 }
 402         }
 403
 404         /**
 405          * Adds a local Sone from the given own identity.
 406          *
 407          * @param ownIdentity
 408          *            The own identity to create a Sone from
 409          * @return The added (or already existing) Sone
 410          */
 411         public Sone addLocalSone(OwnIdentity ownIdentity) {
 412                 if (ownIdentity == null) {
 413                         logger.log(Level.WARNING, "Given OwnIdentity is null!");
 414                         return null;
 415                 }
 416                 synchronized (localSones) {
 417                         if (localSones.containsKey(ownIdentity.getId())) {
 418                                 logger.log(Level.FINE, "Tried to add known local Sone: %s", ownIdentity);
 419                                 return localSones.get(ownIdentity.getId());
 420                         }
 421                         final Sone sone;
 422                         try {
 423                                 sone = new Sone(ownIdentity).setInsertUri(new FreenetURI(ownIdentity.getInsertUri())).setRequestUri(new FreenetURI(ownIdentity.getRequestUri()));
 424                                 sone.setLatestEdition(Numbers.safeParseLong(ownIdentity.getProperty("Sone.LatestEdition"), (long) 0));
 425                         } catch (MalformedURLException mue1) {
 426                                 logger.log(Level.SEVERE, "Could not convert the Identity’s URIs to Freenet URIs: " + ownIdentity.getInsertUri() + ", " + ownIdentity.getRequestUri(), mue1);
 427                                 return null;
 428                         }
 429                         /* TODO - load posts ’n stuff */
 430                         localSones.put(ownIdentity.getId(), sone);
 431                         SoneInserter soneInserter = new SoneInserter(this, freenetInterface, sone);
 432                         soneInserters.put(sone, soneInserter);
 433                         soneInserter.start();
 434                         setSoneStatus(sone, SoneStatus.idle);
 435                         new Thread(new Runnable() {
 436
 437                                 @Override
 438                                 @SuppressWarnings("synthetic-access")
 439                                 public void run() {
 440                                         soneDownloader.fetchSone(sone);
 441                                 }
 442
 443                         }, "Sone Downloader").start();
 444                         return sone;
 445                 }
 446         }
 447
 448         /**
 449          * Creates a new Sone for the given own identity.
 450          *
 451          * @param ownIdentity
 452          *            The own identity to create a Sone for
 453          * @return The created Sone
 454          */
 455         public Sone createSone(OwnIdentity ownIdentity) {
 456                 identityManager.addContext(ownIdentity, "Sone");
 457                 Sone sone = addLocalSone(ownIdentity);
 458                 synchronized (sone) {
 459                         /* mark as modified so that it gets inserted immediately. */
 460                         sone.setModificationCounter(sone.getModificationCounter() + 1);
 461                 }
 462                 return sone;
 463         }
 464
 465         /**
 466          * Adds the Sone of the given identity.
 467          *
 468          * @param identity
 469          *            The identity whose Sone to add
 470          * @return The added or already existing Sone
 471          */
 472         public Sone addRemoteSone(Identity identity) {
 473                 if (identity == null) {
 474                         logger.log(Level.WARNING, "Given Identity is null!");
 475                         return null;
 476                 }
 477                 synchronized (remoteSones) {
 478                         if (remoteSones.containsKey(identity.getId())) {
 479                                 logger.log(Level.FINE, "Identity already exists: %s", identity);
 480                                 return remoteSones.get(identity.getId());
 481                         }
 482                         Sone sone = new Sone(identity);
 483                         sone.setRequestUri(getSoneUri(identity.getRequestUri(), identity.getProperty("Sone.LatestEdition")));
 484                         remoteSones.put(identity.getId(), sone);
 485                         soneDownloader.addSone(sone);
 486                         setSoneStatus(sone, SoneStatus.idle);
 487                         return sone;
 488                 }
 489         }
 490
 491         /**
 492          * Updates the stores Sone with the given Sone.
 493          *
 494          * @param sone
 495          *            The updated Sone
 496          */
 497         public void updateSone(Sone sone) {
 498                 if (isRemoteSone(sone)) {
 499                         Sone storedSone = getRemoteSone(sone.getId());
 500                         if (!(sone.getTime() > storedSone.getTime())) {
 501                                 logger.log(Level.FINE, "Downloaded Sone %s is not newer than stored Sone %s.", new Object[] { sone, storedSone });
 502                                 return;
 503                         }
 504                         synchronized (posts) {
 505                                 for (Post post : storedSone.getPosts()) {
 506                                         posts.remove(post.getId());
 507                                 }
 508                                 for (Post post : sone.getPosts()) {
 509                                         posts.put(post.getId(), post);
 510                                 }
 511                         }
 512                         synchronized (replies) {
 513                                 for (Reply reply : storedSone.getReplies()) {
 514                                         replies.remove(reply.getId());
 515                                 }
 516                                 for (Reply reply : sone.getReplies()) {
 517                                         replies.put(reply.getId(), reply);
 518                                 }
 519                         }
 520                         synchronized (storedSone) {
 521                                 storedSone.setTime(sone.getTime());
 522                                 storedSone.setProfile(sone.getProfile());
 523                                 storedSone.setPosts(sone.getPosts());
 524                                 storedSone.setReplies(sone.getReplies());
 525                                 storedSone.setLikePostIds(sone.getLikedPostIds());
 526                                 storedSone.setLikeReplyIds(sone.getLikedReplyIds());
 527                                 storedSone.setLatestEdition(sone.getRequestUri().getEdition());
 528                         }
 529                         saveSone(storedSone);
 530                 }
 531         }
 532
 533         /**
 534          * Deletes the given Sone. This will remove the Sone from the
 535          * {@link #getLocalSone(String) local Sones}, stops its {@link SoneInserter}
 536          * and remove the context from its identity.
 537          *
 538          * @param sone
 539          *            The Sone to delete
 540          */
 541         public void deleteSone(Sone sone) {
 542                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 543                         logger.log(Level.WARNING, "Tried to delete Sone of non-own identity: %s", sone);
 544                         return;
 545                 }
 546                 synchronized (localSones) {
 547                         if (!localSones.containsKey(sone.getId())) {
 548                                 logger.log(Level.WARNING, "Tried to delete non-local Sone: %s", sone);
 549                                 return;
 550                         }
 551                         localSones.remove(sone.getId());
 552                         soneInserters.remove(sone.getId()).stop();
 553                 }
 554                 identityManager.removeContext((OwnIdentity) sone.getIdentity(), "Sone");
 555         }
 556
 557         /**
 558          * Saves the given Sone. This will persist all local settings for the given
 559          * Sone, such as the friends list and similar, private options.
 560          *
 561          * @param sone
 562          *            The Sone to save
 563          */
 564         public void saveSone(Sone sone) {
 565                 if (!isLocalSone(sone)) {
 566                         logger.log(Level.FINE, "Tried to save non-local Sone: %s", sone);
 567                         return;
 568                 }
 569                 if (!(sone.getIdentity() instanceof OwnIdentity)) {
 570                         logger.log(Level.WARNING, "Local Sone without OwnIdentity found, refusing to save: %s", sone);
 571                         return;
 572                 }
 573
 574                 logger.log(Level.INFO, "Saving Sone: %s", sone);
 575                 identityManager.setProperty((OwnIdentity) sone.getIdentity(), "Sone.LatestEdition", String.valueOf(sone.getLatestEdition()));
 576                 try {
 577                         /* save Sone into configuration. */
 578                         String sonePrefix = "Sone/" + sone.getId();
 579                         configuration.getLongValue(sonePrefix + "/Time").setValue(sone.getTime());
 580
 581                         /* save profile. */
 582                         Profile profile = sone.getProfile();
 583                         configuration.getStringValue(sonePrefix + "/Profile/FirstName").setValue(profile.getFirstName());
 584                         configuration.getStringValue(sonePrefix + "/Profile/MiddleName").setValue(profile.getMiddleName());
 585                         configuration.getStringValue(sonePrefix + "/Profile/LastName").setValue(profile.getLastName());
 586                         configuration.getIntValue(sonePrefix + "/Profile/BirthDay").setValue(profile.getBirthDay());
 587                         configuration.getIntValue(sonePrefix + "/Profile/BirthMonth").setValue(profile.getBirthMonth());
 588                         configuration.getIntValue(sonePrefix + "/Profile/BirthYear").setValue(profile.getBirthYear());
 589
 590                         /* save posts. */
 591                         int postCounter = 0;
 592                         for (Post post : sone.getPosts()) {
 593                                 String postPrefix = sonePrefix + "/Posts/" + postCounter++;
 594                                 configuration.getStringValue(postPrefix + "/ID").setValue(post.getId());
 595                                 configuration.getLongValue(postPrefix + "/Time").setValue(post.getTime());
 596                                 configuration.getStringValue(postPrefix + "/Text").setValue(post.getText());
 597                         }
 598                         configuration.getStringValue(sonePrefix + "/Posts/" + postCounter + "/ID").setValue(null);
 599
 600                         /* save replies. */
 601                         int replyCounter = 0;
 602                         for (Reply reply : sone.getReplies()) {
 603                                 String replyPrefix = sonePrefix + "/Replies/" + replyCounter++;
 604                                 configuration.getStringValue(replyPrefix + "/ID").setValue(reply.getId());
 605                                 configuration.getStringValue(replyPrefix + "/Post/ID").setValue(reply.getPost().getId());
 606                                 configuration.getLongValue(replyPrefix + "/Time").setValue(reply.getTime());
 607                                 configuration.getStringValue(replyPrefix + "/Text").setValue(reply.getText());
 608                         }
 609                         configuration.getStringValue(sonePrefix + "/Replies/" + replyCounter + "/ID").setValue(null);
 610
 611                         /* save post likes. */
 612                         int postLikeCounter = 0;
 613                         for (String postId : sone.getLikedPostIds()) {
 614                                 configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter++ + "/ID").setValue(postId);
 615                         }
 616                         configuration.getStringValue(sonePrefix + "/Likes/Post/" + postLikeCounter + "/ID").setValue(null);
 617
 618                         /* save reply likes. */
 619                         int replyLikeCounter = 0;
 620                         for (String replyId : sone.getLikedReplyIds()) {
 621                                 configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter++ + "/ID").setValue(replyId);
 622                         }
 623                         configuration.getStringValue(sonePrefix + "/Likes/Reply/" + replyLikeCounter + "/ID").setValue(null);
 624
 625                         logger.log(Level.INFO, "Sone %s saved.", sone);
 626                 } catch (ConfigurationException ce1) {
 627                         logger.log(Level.WARNING, "Could not save Sone: " + sone, ce1);
 628                 }
 629         }
 630
 631         /**
 632          * Creates a new post.
 633          *
 634          * @param sone
 635          *            The Sone that creates the post
 636          * @param text
 637          *            The text of the post
 638          */
 639         public void createPost(Sone sone, String text) {
 640                 createPost(sone, System.currentTimeMillis(), text);
 641         }
 642
 643         /**
 644          * Creates a new post.
 645          *
 646          * @param sone
 647          *            The Sone that creates the post
 648          * @param time
 649          *            The time of the post
 650          * @param text
 651          *            The text of the post
 652          */
 653         public void createPost(Sone sone, long time, String text) {
 654                 if (!isLocalSone(sone)) {
 655                         logger.log(Level.FINE, "Tried to create post for non-local Sone: %s", sone);
 656                         return;
 657                 }
 658                 Post post = new Post(sone, time, text);
 659                 synchronized (posts) {
 660                         posts.put(post.getId(), post);
 661                 }
 662                 sone.addPost(post);
 663                 saveSone(sone);
 664         }
 665
 666         /**
 667          * Deletes the given post.
 668          *
 669          * @param post
 670          *            The post to delete
 671          */
 672         public void deletePost(Post post) {
 673                 if (!isLocalSone(post.getSone())) {
 674                         logger.log(Level.WARNING, "Tried to delete post of non-local Sone: %s", post.getSone());
 675                         return;
 676                 }
 677                 post.getSone().removePost(post);
 678                 synchronized (posts) {
 679                         posts.remove(post.getId());
 680                 }
 681                 saveSone(post.getSone());
 682         }
 683
 684         /**
 685          * Creates a new reply.
 686          *
 687          * @param sone
 688          *            The Sone that creates the reply
 689          * @param post
 690          *            The post that this reply refers to
 691          * @param text
 692          *            The text of the reply
 693          */
 694         public void createReply(Sone sone, Post post, String text) {
 695                 createReply(sone, post, System.currentTimeMillis(), text);
 696         }
 697
 698         /**
 699          * Creates a new reply.
 700          *
 701          * @param sone
 702          *            The Sone that creates the reply
 703          * @param post
 704          *            The post that this reply refers to
 705          * @param time
 706          *            The time of the reply
 707          * @param text
 708          *            The text of the reply
 709          */
 710         public void createReply(Sone sone, Post post, long time, String text) {
 711                 if (!isLocalSone(sone)) {
 712                         logger.log(Level.FINE, "Tried to create reply for non-local Sone: %s", sone);
 713                         return;
 714                 }
 715                 Reply reply = new Reply(sone, post, System.currentTimeMillis(), text);
 716                 synchronized (replies) {
 717                         replies.put(reply.getId(), reply);
 718                 }
 719                 sone.addReply(reply);
 720                 saveSone(sone);
 721         }
 722
 723         /**
 724          * Deletes the given reply.
 725          *
 726          * @param reply
 727          *            The reply to delete
 728          */
 729         public void deleteReply(Reply reply) {
 730                 Sone sone = reply.getSone();
 731                 if (!isLocalSone(sone)) {
 732                         logger.log(Level.FINE, "Tried to delete non-local reply: %s", reply);
 733                         return;
 734                 }
 735                 synchronized (replies) {
 736                         replies.remove(reply.getId());
 737                 }
 738                 sone.removeReply(reply);
 739                 saveSone(sone);
 740         }
 741
 742         /**
 743          * Starts the core.
 744          */
 745         public void start() {
 746                 loadConfiguration();
 747         }
 748
 749         /**
 750          * Stops the core.
 751          */
 752         public void stop() {
 753                 synchronized (localSones) {
 754                         for (SoneInserter soneInserter : soneInserters.values()) {
 755                                 soneInserter.stop();
 756                         }
 757                 }
 758                 saveConfiguration();
 759         }
 760
 761         //
 762         // PRIVATE METHODS
 763         //
 764
 765         /**
 766          * Loads the configuration.
 767          */
 768         @SuppressWarnings("unchecked")
 769         private void loadConfiguration() {
 770                 /* create options. */
 771                 options.addIntegerOption("InsertionDelay", new DefaultOption<Integer>(60, new OptionWatcher<Integer>() {
 772
 773                         @Override
 774                         public void optionChanged(Option<Integer> option, Integer oldValue, Integer newValue) {
 775                                 SoneInserter.setInsertionDelay(newValue);
 776                         }
 777
 778                 }));
 779                 options.addBooleanOption("ClearOnNextRestart", new DefaultOption<Boolean>(false));
 780                 options.addBooleanOption("ReallyClearOnNextRestart", new DefaultOption<Boolean>(false));
 781
 782                 /* read options from configuration. */
 783                 options.getBooleanOption("ClearOnNextRestart").set(configuration.getBooleanValue("Option/ClearOnNextRestart").getValue(null));
 784                 options.getBooleanOption("ReallyClearOnNextRestart").set(configuration.getBooleanValue("Option/ReallyClearOnNextRestart").getValue(null));
 785                 boolean clearConfiguration = options.getBooleanOption("ClearOnNextRestart").get() && options.getBooleanOption("ReallyClearOnNextRestart").get();
 786                 options.getBooleanOption("ClearOnNextRestart").set(null);
 787                 options.getBooleanOption("ReallyClearOnNextRestart").set(null);
 788                 if (clearConfiguration) {
 789                         /* stop loading the configuration. */
 790                         return;
 791                 }
 792
 793                 options.getIntegerOption("InsertionDelay").set(configuration.getIntValue("Option/InsertionDelay").getValue(null));
 794
 795         }
 796
 797         /**
 798          * Saves the current options.
 799          */
 800         private void saveConfiguration() {
 801                 /* store the options first. */
 802                 try {
 803                         configuration.getIntValue("Option/InsertionDelay").setValue(options.getIntegerOption("InsertionDelay").getReal());
 804                         configuration.getBooleanValue("Option/ClearOnNextRestart").setValue(options.getBooleanOption("ClearOnNextRestart").getReal());
 805                         configuration.getBooleanValue("Option/ReallyClearOnNextRestart").setValue(options.getBooleanOption("ReallyClearOnNextRestart").getReal());
 806                 } catch (ConfigurationException ce1) {
 807                         logger.log(Level.SEVERE, "Could not store configuration!", ce1);
 808                 }
 809         }
 810
 811         /**
 812          * Generate a Sone URI from the given URI and latest edition.
 813          *
 814          * @param uriString
 815          *            The URI to derive the Sone URI from
 816          * @param latestEditionString
 817          *            The latest edition as a {@link String}, or {@code null}
 818          * @return The derived URI
 819          */
 820         private FreenetURI getSoneUri(String uriString, String latestEditionString) {
 821                 try {
 822                         FreenetURI uri = new FreenetURI(uriString).setDocName("Sone").setMetaString(new String[0]).setSuggestedEdition(Numbers.safeParseLong(latestEditionString, (long) 0));
 823                         return uri;
 824                 } catch (MalformedURLException mue1) {
 825                         logger.log(Level.WARNING, "Could not create Sone URI from URI: " + uriString, mue1);
 826                         return null;
 827                 }
 828         }
 829
 830         //
 831         // INTERFACE IdentityListener
 832         //
 833
 834         /**
 835          * {@inheritDoc}
 836          */
 837         @Override
 838         public void ownIdentityAdded(OwnIdentity ownIdentity) {
 839                 logger.log(Level.FINEST, "Adding OwnIdentity: " + ownIdentity);
 840                 if (ownIdentity.hasContext("Sone")) {
 841                         addLocalSone(ownIdentity);
 842                 }
 843         }
 844
 845         /**
 846          * {@inheritDoc}
 847          */
 848         @Override
 849         public void ownIdentityRemoved(OwnIdentity ownIdentity) {
 850                 /* TODO */
 851         }
 852
 853         /**
 854          * {@inheritDoc}
 855          */
 856         @Override
 857         public void identityAdded(Identity identity) {
 858                 logger.log(Level.FINEST, "Adding Identity: " + identity);
 859                 addRemoteSone(identity);
 860         }
 861
 862         /**
 863          * {@inheritDoc}
 864          */
 865         @Override
 866         public void identityUpdated(Identity identity) {
 867                 /* TODO */
 868         }
 869
 870         /**
 871          * {@inheritDoc}
 872          */
 873         @Override
 874         public void identityRemoved(Identity identity) {
 875                 /* TODO */
 876         }
 877
 878 }