src/main/java/net/pterodactylus/sone/template/IdentityAccessor.java

   1 /*
   2  * Sone - IdentityAccessor.java - Copyright © 2010–2016 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.template;
  19
  20 import java.util.Set;
  21
  22 import javax.inject.Inject;
  23 import javax.inject.Singleton;
  24
  25 import net.pterodactylus.sone.core.Core;
  26 import net.pterodactylus.sone.freenet.wot.Identity;
  27 import net.pterodactylus.sone.freenet.wot.OwnIdentity;
  28 import net.pterodactylus.util.template.Accessor;
  29 import net.pterodactylus.util.template.ReflectionAccessor;
  30 import net.pterodactylus.util.template.TemplateContext;
  31
  32 /**
  33  * {@link Accessor} implementation that adds a “uniqueNickname” member to an
  34  * {@link Identity}.
  35  */
  36 @Singleton
  37 public class IdentityAccessor extends ReflectionAccessor {
  38
  39         /** The core. */
  40         private final Core core;
  41
  42         /**
  43          * Creates a new identity accessor.
  44          *
  45          * @param core
  46          *            The core
  47          */
  48         @Inject
  49         public IdentityAccessor(Core core) {
  50                 this.core = core;
  51         }
  52
  53         /**
  54          * {@inheritDoc}
  55          */
  56         @Override
  57         public Object get(TemplateContext templateContext, Object object, String member) {
  58                 Identity identity = (Identity) object;
  59                 if ("uniqueNickname".equals(member)) {
  60                         int minLength = -1;
  61                         boolean found;
  62                         Set<OwnIdentity> ownIdentities = core.getIdentityManager().getAllOwnIdentities();
  63                         do {
  64                                 boolean unique = true;
  65                                 String abbreviatedWantedNickname = getAbbreviatedNickname(identity, ++minLength);
  66                                 for (Identity ownIdentity : ownIdentities) {
  67                                         if (ownIdentity.equals(identity)) {
  68                                                 continue;
  69                                         }
  70                                         String abbreviatedNickname = getAbbreviatedNickname(ownIdentity, minLength);
  71                                         if (abbreviatedNickname.equals(abbreviatedWantedNickname)) {
  72                                                 unique = false;
  73                                                 break;
  74                                         }
  75                                 }
  76                                 found = unique;
  77                         } while (!found && (minLength < 43));
  78                         return getAbbreviatedNickname(identity, minLength);
  79                 }
  80                 return super.get(templateContext, object, member);
  81         }
  82
  83         //
  84         // PRIVATE METHODS
  85         //
  86
  87         /**
  88          * Returns the nickname of the given identity, optionally appending the
  89          * first characters of the ID to it.
  90          *
  91          * @param identity
  92          *            The identity
  93          * @param length
  94          *            The number of characters from the beginning of the ID to
  95          *            append to the nickname
  96          * @return The nickname with optional ID appendage
  97          */
  98         private static String getAbbreviatedNickname(Identity identity, int length) {
  99                 return identity.getNickname() + ((length > 0) ? "@" + identity.getId().substring(0, length) : "");
 100         }
 101
 102 }