1package eu.siacs.conversations.generator;
 2
 3import eu.siacs.conversations.entities.Account;
 4import eu.siacs.conversations.entities.Contact;
 5import eu.siacs.conversations.entities.Presence;
 6import eu.siacs.conversations.services.XmppConnectionService;
 7import eu.siacs.conversations.xml.Element;
 8import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
 9
10public class PresenceGenerator extends AbstractGenerator {
11
12	public PresenceGenerator(XmppConnectionService service) {
13		super(service);
14	}
15
16	private PresencePacket subscription(String type, Contact contact) {
17		PresencePacket packet = new PresencePacket();
18		packet.setAttribute("type", type);
19		packet.setTo(contact.getJid());
20		packet.setFrom(contact.getAccount().getJid().toBareJid());
21		return packet;
22	}
23
24	public PresencePacket requestPresenceUpdatesFrom(Contact contact) {
25		return subscription("subscribe", contact);
26	}
27
28	public PresencePacket stopPresenceUpdatesFrom(Contact contact) {
29		return subscription("unsubscribe", contact);
30	}
31
32	public PresencePacket stopPresenceUpdatesTo(Contact contact) {
33		return subscription("unsubscribed", contact);
34	}
35
36	public PresencePacket sendPresenceUpdatesTo(Contact contact) {
37		return subscription("subscribed", contact);
38	}
39
40	public PresencePacket selfPresence(Account account, Presence.Status status) {
41		return selfPresence(account, status, true);
42	}
43
44	public PresencePacket selfPresence(Account account, Presence.Status status, boolean includePgpAnnouncement) {
45		PresencePacket packet = new PresencePacket();
46		if(status.toShowString() != null) {
47			packet.addChild("show").setContent(status.toShowString());
48		}
49		packet.setFrom(account.getJid());
50		String sig = account.getPgpSignature();
51		if (includePgpAnnouncement && sig != null && mXmppConnectionService.getPgpEngine() != null) {
52			packet.addChild("x", "jabber:x:signed").setContent(sig);
53		}
54		String capHash = getCapHash();
55		if (capHash != null) {
56			Element cap = packet.addChild("c",
57					"http://jabber.org/protocol/caps");
58			cap.setAttribute("hash", "sha-1");
59			cap.setAttribute("node", "http://conversations.im");
60			cap.setAttribute("ver", capHash);
61		}
62		return packet;
63	}
64
65	public PresencePacket sendOfflinePresence(Account account) {
66		PresencePacket packet = new PresencePacket();
67		packet.setFrom(account.getJid());
68		packet.setAttribute("type","unavailable");
69		return packet;
70	}
71}