feat(xep): Add joinRoom, leaveRoom routines.

Signed-off-by: Ikjot Singh Dhody <ikjotsd@gmail.com>

packages/moxxmpp/lib/moxxmpp.dart

@@ -48,6 +48,7 @@ export 'package:moxxmpp/src/xeps/xep_0030/errors.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/helpers.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/types.dart';
 export 'package:moxxmpp/src/xeps/xep_0030/xep_0030.dart';
+export 'package:moxxmpp/src/xeps/xep_0045/xep_0045.dart';
 export 'package:moxxmpp/src/xeps/xep_0054.dart';
 export 'package:moxxmpp/src/xeps/xep_0060/errors.dart';
 export 'package:moxxmpp/src/xeps/xep_0060/helpers.dart';

packages/moxxmpp/lib/src/namespaces.dart

@@ -20,6 +20,9 @@ const discoItemsXmlns = 'http://jabber.org/protocol/disco#items';
 // XEP-0033
 const extendedAddressingXmlns = 'http://jabber.org/protocol/address';
 
+// XEP-0045
+const mucXmlns = 'http://jabber.org/protocol/muc';
+
 // XEP-0054
 const vCardTempXmlns = 'vcard-temp';
 const vCardTempUpdate = 'vcard-temp:x:update';

packages/moxxmpp/lib/src/xeps/xep_0045/errors.dart

@@ -1,3 +1,5 @@
 abstract class MUCError {}
 
 class InvalidStanzaFormat extends MUCError {}
+
+class NoNicknameSpecified extends MUCError {}

packages/moxxmpp/lib/src/xeps/xep_0045/types.dart

@@ -9,7 +9,7 @@ class RoomInformation {
   });
 
   factory RoomInformation.fromStanza({
-    required String roomJID,
+    required JID roomJID,
     required XMLNode stanza,
   }) {
     final featureNodes = stanza.children[0].findTags('feature');
@@ -31,7 +31,7 @@ class RoomInformation {
       throw InvalidStanzaFormat();
     }
   }
-  final String jid;
+  final JID jid;
   final List<String> features;
   final String name;
 }

packages/moxxmpp/lib/src/xeps/xep_0045/xep_0045.dart

@@ -8,15 +8,16 @@ class MUCManager extends XmppManagerBase {
   @override
   Future<bool> isSupported() async => true;
 
-  Future<Result<RoomInformation, MUCError>> queryRoomInformation(
+  Future<Result<RoomInformation, MUCError>> queryRoomInformation({
-      String roomJID) async {
+    required JID roomJID,
+  }) async {
     final attrs = getAttributes();
     try {
       final result = await attrs.sendStanza(
         StanzaDetails(
           Stanza.iq(
             type: 'get',
-            to: roomJID,
+            to: roomJID.toString(),
             children: [
               XMLNode.xmlns(
                 tag: 'query',
@@ -33,4 +34,53 @@ class MUCManager extends XmppManagerBase {
       return Result(InvalidStanzaFormat());
     }
   }
+
+  Future<Result<bool, MUCError>> joinRoom({
+    required JID roomJIDWithNickname,
+  }) async {
+    if (roomJIDWithNickname.resource.isEmpty) {
+      return Result(NoNicknameSpecified());
+    }
+    final attrs = getAttributes();
+    try {
+      await attrs.sendStanza(
+        StanzaDetails(
+          Stanza.presence(
+            to: roomJIDWithNickname.toString(),
+            children: [
+              XMLNode.xmlns(
+                tag: 'x',
+                xmlns: mucXmlns,
+              )
+            ],
+          ),
+        ),
+      );
+      return const Result(true);
+    } catch (e) {
+      return Result(InvalidStanzaFormat());
+    }
+  }
+
+  Future<Result<bool, MUCError>> leaveRoom({
+    required JID roomJIDWithNickname,
+  }) async {
+    if (roomJIDWithNickname.resource.isEmpty) {
+      return Result(NoNicknameSpecified());
+    }
+    final attrs = getAttributes();
+    try {
+      await attrs.sendStanza(
+        StanzaDetails(
+          Stanza.presence(
+            to: roomJIDWithNickname.toString(),
+            type: 'unavailable',
+          ),
+        ),
+      );
+      return const Result(true);
+    } catch (e) {
+      return Result(InvalidStanzaFormat());
+    }
+  }
 }