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using Gee;
namespace Xmpp.Xep.ChatStateNotifications {
private const string NS_URI = "http://jabber.org/protocol/chatstates";
public const string STATE_ACTIVE = "active";
public const string STATE_INACTIVE = "inactive";
public const string STATE_GONE = "gone";
public const string STATE_COMPOSING = "composing";
public const string STATE_PAUSED = "paused";
private const string[] STATES = { STATE_ACTIVE, STATE_INACTIVE, STATE_GONE, STATE_COMPOSING, STATE_PAUSED };
public class Module : XmppStreamModule {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0085_chat_state_notifications");
public signal void chat_state_received(XmppStream stream, Jid jid, string state, MessageStanza stanza);
private SendPipelineListener send_pipeline_listener = new SendPipelineListener();
/**
* "A message stanza that does not contain standard messaging content [...] SHOULD be a state other than <active/>" (0085, 5.6)
*/
public void send_state(XmppStream stream, Jid jid, string message_type, string state) {
MessageStanza message = new MessageStanza() { to=jid, type_=message_type };
message.stanza.put_node(new StanzaNode.build(state, NS_URI).add_self_xmlns());
MessageProcessingHints.set_message_hint(message, MessageProcessingHints.HINT_NO_STORE);
stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, message);
}
public override void attach(XmppStream stream) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
stream.get_module(MessageModule.IDENTITY).send_pipeline.connect(send_pipeline_listener);
stream.get_module(MessageModule.IDENTITY).received_message.connect(on_received_message);
}
public override void detach(XmppStream stream) {
stream.get_module(MessageModule.IDENTITY).received_message.disconnect(on_received_message);
stream.get_module(MessageModule.IDENTITY).send_pipeline.disconnect(send_pipeline_listener);
}
public override string get_ns() { return NS_URI; }
public override string get_id() { return IDENTITY.id; }
private void on_received_message(XmppStream stream, MessageStanza message) {
if (!message.is_error()) {
Gee.List<StanzaNode> nodes = message.stanza.get_all_subnodes();
foreach (StanzaNode node in nodes) {
if (node.ns_uri == NS_URI && node.name in STATES) {
chat_state_received(stream, message.from, node.name, message);
}
}
}
}
}
public class SendPipelineListener : StanzaListener<MessageStanza> {
private const string[] after_actions_const = {"MODIFY_BODY"};
public override string action_group { get { return "ADD_NODES"; } }
public override string[] after_actions { get { return after_actions_const; } }
public override async bool run(XmppStream stream, MessageStanza message) {
if (message.body == null) return false;
if (message.type_ != MessageStanza.TYPE_CHAT) return false;
message.stanza.put_node(new StanzaNode.build(STATE_ACTIVE, NS_URI).add_self_xmlns());
return false;
}
}
}
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