Try fixing some setup things

Author: TobiasFella

Quotient/connection.cpp

@@ -392,31 +392,44 @@ void Connection::Private::completeSetup(const QString& mxId, bool newLogin,
                                         const std::optional<QString>& deviceId,
                                         const std::optional<QString>& accessToken)
 {
-    data->setIdentity(mxId, deviceId.value_or(u""_s), accessToken.value_or(u""_s).toLatin1());
-    q->setObjectName(data->userId() % u'/' % data->deviceId());
-    qCDebug(MAIN) << "Using server" << data->baseUrl().toDisplayString()
-                  << "by user" << data->userId()
-                  << "from device" << data->deviceId();
-    connect(qApp, &QCoreApplication::aboutToQuit, q, &Connection::saveState);
-    setupPicklingKey();
-
-    if (accessToken.has_value()) {
-        q->loadVersions();
-        q->loadCapabilities();
-        q->user()->load(); // Load the local user's profile
-    }
+    auto doCompleteSetup = [this, mxId, deviceId, accessToken](){
+        data->setIdentity(mxId, deviceId.value_or(u""_s), accessToken.value_or(u""_s).toLatin1());
+        q->setObjectName(data->userId() % u'/' % data->deviceId());
+        qCDebug(MAIN) << "Using server" << data->baseUrl().toDisplayString()
+                    << "by user" << data->userId()
+                    << "from device" << data->deviceId();
+        connect(qApp, &QCoreApplication::aboutToQuit, q, &Connection::saveState);
+        setupPicklingKey();
+
+        if (accessToken.has_value()) {
+            q->loadVersions();
+            q->loadCapabilities();
+            q->user()->load(); // Load the local user's profile
+        }
 
-    emit q->stateChanged(); // Technically connected to the homeserver but no E2EE yet
+        emit q->stateChanged(); // Technically connected to the homeserver but no E2EE yet
 
-    if (useEncryption) {
-        emit q->encryptionChanged(useEncryption);
-        emit q->stateChanged();
-        emit q->ready();
-        emit q->connected();
+        if (useEncryption) {
+            emit q->encryptionChanged(useEncryption);
+            emit q->stateChanged();
+            emit q->ready();
+            emit q->connected();
+        } else {
+            qCInfo(E2EE) << "End-to-end encryption (E2EE) support is off for" << q->objectName();
+            emit q->ready();
+            emit q->connected();
+        }
+    };
+    if (newLogin) {
+        auto mxIdForDb = q->userId();
+        mxIdForDb.replace(u':', u'_');
+        const QString databasePath{ QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) % u'/' % mxIdForDb % u'/' % q->deviceId() };
+        QDir(databasePath).removeRecursively();
+        runKeychainJob(new QKeychain::DeletePasswordJob(qAppName()), q->userId() % u"-Pickle"_s).then([doCompleteSetup](const auto &) {
+            doCompleteSetup();
+        });
     } else {
-        qCInfo(E2EE) << "End-to-end encryption (E2EE) support is off for" << q->objectName();
-        emit q->ready();
-        emit q->connected();
+        doCompleteSetup();
     }
 }