2 files changed, 51 insertions, 18 deletions

diff --git a/vala-xmpp/src/module/xep/0082_date_time_profiles.vala b/vala-xmpp/src/module/xep/0082_date_time_profiles.vala
new file mode 100644
index 00000000..b2ce1077
--- /dev/null
+++ b/vala-xmpp/src/module/xep/0082_date_time_profiles.vala
@@ -0,0 +1,41 @@
+namespace Xmpp.Xep.DateTimeProfiles {
+
+    public class Module {
+        public Regex DATETIME_REGEX;
+
+        public Module() {
+            DATETIME_REGEX = new Regex("""^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(\.(\d{3}))?(Z|((\+|\-)(\d{2}):(\d{2})))$""");
+        }
+
+        public DateTime? parse_string(string time_string) {
+        MatchInfo match_info;
+        if (DATETIME_REGEX.match(time_string, RegexMatchFlags.ANCHORED, out match_info)) {
+            int year = int.parse(match_info.fetch(1));
+            int month = int.parse(match_info.fetch(2));
+            int day = int.parse(match_info.fetch(3));
+            int hour = int.parse(match_info.fetch(4));
+            int minute = int.parse(match_info.fetch(5));
+            int second = int.parse(match_info.fetch(6));
+            DateTime datetime = new DateTime.utc(year, month, day, hour, minute, second);
+            if (match_info.fetch(9) != "Z") {
+                char plusminus = match_info.fetch(11)[0];
+                int tz_hour = int.parse(match_info.fetch(12));
+                int tz_minute = int.parse(match_info.fetch(13));
+                if (plusminus == '-') {
+                    tz_hour *= -1;
+                    tz_minute *= -1;
+                }
+                datetime.add_hours(tz_hour);
+                datetime.add_minutes(tz_minute);
+            }
+            return datetime;
+        }
+        return null;
+    }
+
+    public string to_datetime(DateTime time) {
+        return time.format("%Y-%m-%dT%H:%M:%SZ");
+    }
+}
+
+}
\ No newline at end of file
diff --git a/vala-xmpp/src/module/xep/0203_delayed_delivery.vala b/vala-xmpp/src/module/xep/0203_delayed_delivery.vala
index 528b0017..9f9761f2 100644
--- a/vala-xmpp/src/module/xep/0203_delayed_delivery.vala
+++ b/vala-xmpp/src/module/xep/0203_delayed_delivery.vala
@@ -6,16 +6,17 @@ namespace Xmpp.Xep.DelayedDelivery {
     public class Module : XmppStreamModule {
         public const string ID = "0203_delayed_delivery";
 
+        public static void set_message_delay(Message.Stanza message, DateTime datetime) {
+            StanzaNode delay_node = (new StanzaNode.build("delay", NS_URI)).add_self_xmlns();
+            delay_node.put_attribute("stamp", (new DateTimeProfiles.Module()).to_datetime(datetime));
+            message.stanza.put_node(delay_node);
+        }
+
         public static DateTime? get_send_time(Message.Stanza message) {
             StanzaNode? delay_node = message.stanza.get_subnode("delay", NS_URI);
             if (delay_node != null) {
                 string time = delay_node.get_attribute("stamp");
-                return new DateTime.utc(int.parse(time.substring(0, 4)),
-                    int.parse(time.substring(5, 2)),
-                    int.parse(time.substring(8, 2)),
-                    int.parse(time.substring(11, 2)),
-                    int.parse(time.substring(14, 2)),
-                    int.parse(time.substring(17, 2)));
+                return (new DateTimeProfiles.Module()).parse_string(time);
             } else {
                 return null;
             }
@@ -39,24 +40,15 @@ namespace Xmpp.Xep.DelayedDelivery {
         public override string get_id() { return ID; }
 
         private void on_pre_received_message(XmppStream stream, Message.Stanza message) {
-            StanzaNode? delay_node = message.stanza.get_subnode("delay", NS_URI);
-            if (delay_node != null) {
-                string time = delay_node.get_attribute("stamp");
-                DateTime datetime = new DateTime.utc(int.parse(time.substring(0, 4)),
-                    int.parse(time.substring(5, 2)),
-                    int.parse(time.substring(8, 2)),
-                    int.parse(time.substring(11, 2)),
-                    int.parse(time.substring(14, 2)),
-                    int.parse(time.substring(17, 2)));
-                message.add_flag(new MessageFlag(datetime));
-            }
+            DateTime? datetime = get_send_time(message);
+            if (datetime != null) message.add_flag(new MessageFlag(datetime));
         }
     }
 
     public class MessageFlag : Message.MessageFlag {
         public const string ID = "delayed_delivery";
 
-        DateTime datetime;
+        public DateTime datetime { get; private set; }
 
         public MessageFlag(DateTime datetime) {
             this.datetime = datetime;