1package im.conversations.android.xmpp.model.stanza;
 2
 3import com.google.common.base.Strings;
 4import eu.siacs.conversations.xml.Element;
 5import im.conversations.android.annotation.XmlElement;
 6import im.conversations.android.xmpp.model.Extension;
 7import im.conversations.android.xmpp.model.error.Error;
 8import java.util.Arrays;
 9import java.util.Locale;
10
11@XmlElement
12public class Iq extends Stanza {
13
14    public static Iq TIMEOUT = new Iq(Type.TIMEOUT);
15
16    public Iq() {
17        super(Iq.class);
18    }
19
20    public Iq(final Type type) {
21        super(Iq.class);
22        this.setAttribute("type", type.toString().toLowerCase(Locale.ROOT));
23    }
24
25    public Iq(final Type type, final Extension... extensions) {
26        this(type);
27        this.addExtensions(Arrays.asList(extensions));
28    }
29
30    // TODO get rid of timeout
31    public enum Type {
32        SET,
33        GET,
34        ERROR,
35        RESULT,
36        TIMEOUT
37    }
38
39    public Type getType() {
40        return Type.valueOf(
41                Strings.nullToEmpty(this.getAttribute("type")).toUpperCase(Locale.ROOT));
42    }
43
44    @Override
45    public boolean isInvalid() {
46        final var id = getId();
47        if (Strings.isNullOrEmpty(id)) {
48            return true;
49        }
50        return super.isInvalid();
51    }
52
53    // Legacy methods that need to be refactored:
54
55    public Element query() {
56        final Element query = findChild("query");
57        if (query != null) {
58            return query;
59        }
60        return addChild("query");
61    }
62
63    public Element query(final String xmlns) {
64        final Element query = query();
65        query.setAttribute("xmlns", xmlns);
66        return query();
67    }
68
69    public Iq generateResponse(final Iq.Type type) {
70        final var packet = new Iq(type);
71        packet.setTo(this.getFrom());
72        packet.setId(this.getId());
73        return packet;
74    }
75
76    public String getErrorCondition() {
77        final Error error = getError();
78        final var condition = error == null ? null : error.getCondition();
79        return condition == null ? null : condition.getName();
80    }
81}