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