/*
* Sone - IdentityAccessor.java - Copyright © 2010–2013 David Roden
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.pterodactylus.sone.template;
import java.util.Set;
import net.pterodactylus.sone.core.Core;
import net.pterodactylus.sone.freenet.wot.Identity;
import net.pterodactylus.sone.freenet.wot.OwnIdentity;
import net.pterodactylus.util.template.Accessor;
import net.pterodactylus.util.template.ReflectionAccessor;
import net.pterodactylus.util.template.TemplateContext;
/**
* {@link Accessor} implementation that adds a “uniqueNickname” member to an
* {@link Identity}.
*
* @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
*/
public class IdentityAccessor extends ReflectionAccessor {
/** The core. */
private final Core core;
/**
* Creates a new identity accessor.
*
* @param core
* The core
*/
public IdentityAccessor(Core core) {
this.core = core;
}
/**
* {@inheritDoc}
*/
@Override
public Object get(TemplateContext templateContext, Object object, String member) {
Identity identity = (Identity) object;
if ("uniqueNickname".equals(member)) {
int minLength = -1;
boolean found = false;
Set<OwnIdentity> ownIdentities = null;
ownIdentities = core.getIdentityManager().getAllOwnIdentities();
do {
boolean unique = true;
String abbreviatedWantedNickname = getAbbreviatedNickname(identity, ++minLength);
for (Identity ownIdentity : ownIdentities) {
if (ownIdentity.equals(identity)) {
continue;
}
String abbreviatedNickname = getAbbreviatedNickname(ownIdentity, minLength);
if (abbreviatedNickname.equals(abbreviatedWantedNickname)) {
unique = false;
break;
}
}
found = unique;
} while (!found && (minLength < 43));
return getAbbreviatedNickname(identity, minLength);
}
return super.get(templateContext, object, member);
}
//
// PRIVATE METHODS
//
/**
* Returns the nickname of the given identity, optionally appending the
* first characters of the ID to it.
*
* @param identity
* The identity
* @param length
* The number of characters from the beginning of the ID to
* append to the nickname
* @return The nickname with optional ID appendage
*/
private static String getAbbreviatedNickname(Identity identity, int length) {
return identity.getNickname() + ((length > 0) ? "@" + identity.getId().substring(0, length) : "");
}
}