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namespace Xmpp.Xep.DelayedDelivery {
private const string NS_URI = "urn:xmpp:delay";
public static DateTime? get_time_for_node(StanzaNode node) {
string? time = node.get_attribute("stamp");
if (time != null) return DateTimeProfiles.parse_string(time);
return null;
}
public static DateTime? get_time_for_message(MessageStanza message, Jid? jid = null) {
foreach (StanzaNode delay_node in message.stanza.get_subnodes("delay", NS_URI)) {
if (jid == null || delay_node.get_attribute("from") == jid.to_string()) {
return get_time_for_node(delay_node);
}
}
return null;
}
public class Module : XmppStreamModule {
public static ModuleIdentity<Module> IDENTITY = new ModuleIdentity<Module>(NS_URI, "0203_delayed_delivery");
private ReceivedPipelineListener received_pipeline_listener = new ReceivedPipelineListener();
public static void set_message_delay(MessageStanza message, DateTime datetime) {
StanzaNode delay_node = (new StanzaNode.build("delay", NS_URI)).add_self_xmlns();
delay_node.put_attribute("stamp", DateTimeProfiles.to_datetime(datetime));
message.stanza.put_node(delay_node);
}
public override void attach(XmppStream stream) {
stream.get_module(MessageModule.IDENTITY).received_pipeline.connect(received_pipeline_listener);
}
public override void detach(XmppStream stream) {
stream.get_module(MessageModule.IDENTITY).received_pipeline.disconnect(received_pipeline_listener);
}
public override string get_ns() {
return NS_URI;
}
public override string get_id() {
return IDENTITY.id;
}
}
public class ReceivedPipelineListener : StanzaListener<MessageStanza> {
private const string[] after_actions_const = {};
public override string action_group { get { return "ADD_NODE"; } }
public override string[] after_actions { get { return after_actions_const; } }
public override async bool run(XmppStream stream, MessageStanza message) {
DateTime? datetime = get_time_for_message(message);
if (datetime != null) message.add_flag(new MessageFlag(datetime));
return false;
}
}
public class MessageFlag : Xmpp.MessageFlag {
public const string ID = "delayed_delivery";
public DateTime datetime { get; private set; }
public MessageFlag(DateTime datetime) {
this.datetime = datetime;
}
public static MessageFlag? get_flag(MessageStanza message) {
return (MessageFlag) message.get_flag(NS_URI, ID);
}
public override string get_ns() {
return NS_URI;
}
public override string get_id() {
return ID;
}
}
}
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