gui update db and connection

tools/chatgui/src/mainwindow.cpp

@@ -3,6 +3,7 @@
 #include "messagelist.h"
 #include "accountlist.h"
 #include "invitedialog.h"
+#include "joindialog.h"
 #include "invite_link.h"
 #include "../db/db_manager.h"
 #include "../transport/utun_node.h"
@@ -42,6 +43,8 @@ MainWindow::MainWindow(QWidget *parent, DbManager* db)
 
         connect(m_channelList, &ChannelList::inviteRequested,
                 this, &MainWindow::showInviteDialog);
+        connect(m_channelList, &ChannelList::joinRequested,
+                this, &MainWindow::showJoinDialog);
 
         m_channelList->loadChannels();
         m_accountList->loadAccounts();
@@ -179,3 +182,14 @@ void MainWindow::showInviteDialog(const QString& channelId) {
     InviteDialog dlg(link, this);
     dlg.exec();
 }
+
+void MainWindow::showJoinDialog() {
+    if (!m_node || !m_node->isRunning()) {
+        QMessageBox::warning(this, "Error", "Node is not running.");
+        return;
+    }
+    JoinDialog dlg(m_node, m_db, this);
+    if (dlg.exec() == QDialog::Accepted) {
+        m_channelList->loadChannels();
+    }
+}