add registration manager (change password + delete account)

src/main/java/im/conversations/android/xmpp/Managers.java

@@ -17,6 +17,7 @@ import im.conversations.android.xmpp.manager.PepManager;
 import im.conversations.android.xmpp.manager.PresenceManager;
 import im.conversations.android.xmpp.manager.PubSubManager;
 import im.conversations.android.xmpp.manager.ReceiptManager;
+import im.conversations.android.xmpp.manager.RegistrationManager;
 import im.conversations.android.xmpp.manager.RosterManager;
 import im.conversations.android.xmpp.manager.StanzaIdManager;
 
@@ -40,6 +41,7 @@ public final class Managers {
                 .put(PresenceManager.class, new PresenceManager(context, connection))
                 .put(PubSubManager.class, new PubSubManager(context, connection))
                 .put(ReceiptManager.class, new ReceiptManager(context, connection))
+                .put(RegistrationManager.class, new RegistrationManager(context, connection))
                 .put(RosterManager.class, new RosterManager(context, connection))
                 .put(StanzaIdManager.class, new StanzaIdManager(context, connection))
                 .build();

src/main/java/im/conversations/android/xmpp/manager/RegistrationManager.java

@@ -0,0 +1,41 @@
+package im.conversations.android.xmpp.manager;
+
+import android.content.Context;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import com.google.common.util.concurrent.MoreExecutors;
+import im.conversations.android.xmpp.XmppConnection;
+import im.conversations.android.xmpp.model.register.Register;
+import im.conversations.android.xmpp.model.register.Remove;
+import im.conversations.android.xmpp.model.stanza.Iq;
+
+public class RegistrationManager extends AbstractManager {
+
+    public RegistrationManager(Context context, XmppConnection connection) {
+        super(context, connection);
+    }
+
+    public ListenableFuture<Void> setPassword(final String password) {
+        final var account = getAccount();
+        final var iq = new Iq(Iq.Type.SET);
+        final var register = iq.addExtension(new Register());
+        register.addUsername(account.address.getEscapedLocal());
+        register.addPassword(password);
+        return Futures.transform(
+                connection.sendIqPacket(iq), r -> null, MoreExecutors.directExecutor());
+    }
+
+    public ListenableFuture<Void> unregister() {
+        final var iq = new Iq(Iq.Type.SET);
+        final var register = iq.addExtension(new Register());
+        register.addExtension(new Remove());
+        return Futures.transform(
+                connection.sendIqPacket(iq), r -> null, MoreExecutors.directExecutor());
+    }
+
+    // TODO support registration
+    // 3 possible responses:
+    // 1) username + password
+    // 2) Captcha as shown here: https://xmpp.org/extensions/xep-0158.html#register
+    // 3) Redirection as show here: https://xmpp.org/extensions/xep-0077.html#redirect
+}

src/main/java/im/conversations/android/xmpp/model/register/Password.java

@@ -0,0 +1,10 @@
+package im.conversations.android.xmpp.model.register;
+
+import im.conversations.android.xmpp.model.Extension;
+
+public class Password extends Extension {
+
+    public Password() {
+        super(Password.class);
+    }
+}

src/main/java/im/conversations/android/xmpp/model/register/Register.java

@@ -9,4 +9,12 @@ public class Register extends Extension {
     public Register() {
         super(Register.class);
     }
+
+    public void addUsername(final String username) {
+        this.addExtension(new Username()).setContent(username);
+    }
+
+    public void addPassword(final String password) {
+        this.addExtension(new Password()).setContent(password);
+    }
 }

src/main/java/im/conversations/android/xmpp/model/register/Remove.java

@@ -0,0 +1,10 @@
+package im.conversations.android.xmpp.model.register;
+
+import im.conversations.android.xmpp.model.Extension;
+
+public class Remove extends Extension {
+
+    public Remove() {
+        super(Remove.class);
+    }
+}

src/main/java/im/conversations/android/xmpp/model/register/Username.java

@@ -0,0 +1,12 @@
+package im.conversations.android.xmpp.model.register;
+
+import im.conversations.android.annotation.XmlElement;
+import im.conversations.android.xmpp.model.Extension;
+
+@XmlElement
+public class Username extends Extension {
+
+    public Username() {
+        super(Username.class);
+    }
+}