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namespace Xmpp.Xep.MessageDeliveryReceipts {
private const string NS_URI = "urn:xmpp:receipts";
public class Module : XmppStreamModule {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0184_message_delivery_receipts");
public signal void receipt_received(XmppStream stream, Jid jid, string id);
private SendPipelineListener send_pipeline_listener = new SendPipelineListener();
public void send_received(XmppStream stream, Jid from, string message_id) {
MessageStanza received_message = new MessageStanza();
received_message.to = from;
received_message.stanza.put_node(new StanzaNode.build("received", NS_URI).add_self_xmlns().put_attribute("id", message_id));
stream.get_module(MessageModule.IDENTITY).send_message.begin(stream, received_message);
}
public static bool requests_receipt(MessageStanza message) {
return message.stanza.get_subnode("request", NS_URI) != null;
}
public override void attach(XmppStream stream) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
stream.get_module(MessageModule.IDENTITY).received_message.connect(received_message);
stream.get_module(MessageModule.IDENTITY).send_pipeline.connect(send_pipeline_listener);
}
public override void detach(XmppStream stream) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI);
stream.get_module(MessageModule.IDENTITY).received_message.disconnect(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 received_message(XmppStream stream, MessageStanza message) {
StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
if (received_node != null) {
receipt_received(stream, message.from, received_node.get_attribute("id", NS_URI));
}
}
}
public class SendPipelineListener : StanzaListener<MessageStanza> {
private const string[] after_actions_const = {};
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) {
StanzaNode? received_node = message.stanza.get_subnode("received", NS_URI);
if (received_node != null) return false;
if (message.body == null) return false;
if (message.type_ == MessageStanza.TYPE_GROUPCHAT) return false;
message.stanza.put_node(new StanzaNode.build("request", NS_URI).add_self_xmlns());
return false;
}
}
}
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