From 9aea0e7837ae0ea3d417f3d2afd8554cd71f123d Mon Sep 17 00:00:00 2001
From: Matthias Nott <mnott@mnsoft.org>
Date: Wed, 25 Mar 2026 15:27:00 +0100
Subject: [PATCH] feat: show connection status detail in app bar during connect

---
 lib/services/mqtt_service.dart |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/lib/services/mqtt_service.dart b/lib/services/mqtt_service.dart
index 4e34697..8277d8f 100644
--- a/lib/services/mqtt_service.dart
+++ b/lib/services/mqtt_service.dart
@@ -56,6 +56,7 @@
 
   // Callbacks
   void Function(ConnectionStatus status)? onStatusChanged;
+  void Function(String detail)? onStatusDetail; // "Probing local...", "Scanning network..."
   void Function(Map<String, dynamic> message)? onMessage;
   void Function()? onOpen;
   void Function()? onClose;
@@ -117,6 +118,7 @@
     if (config.vpnHost != null && config.vpnHost!.isNotEmpty) hosts.add(config.vpnHost!);
     if (config.host.isNotEmpty) hosts.add(config.host);
     _mqttLog('MQTT: probing ${hosts.length} hosts in parallel: ${hosts.join(", ")}');
+    onStatusDetail?.call('Probing ${hosts.length} hosts...');
 
     // Probe all configured hosts in parallel — first to respond wins
     String? winner;
@@ -143,6 +145,7 @@
 
     if (winner != null && !_intentionalClose) {
       _mqttLog('MQTT: probe winner: $winner, connecting...');
+      onStatusDetail?.call('Connecting to $winner...');
       try {
         if (await _tryConnect(winner, clientId, timeout: 5000)) return;
       } catch (e) {
@@ -152,6 +155,7 @@
 
     // All hosts failed — retry after delay
     _mqttLog('MQTT: all attempts failed, retrying in 5s');
+    onStatusDetail?.call('No server found, retrying...');
     _setStatus(ConnectionStatus.reconnecting);
     Future.delayed(const Duration(seconds: 5), () {
       if (!_intentionalClose && _status != ConnectionStatus.connected) {
@@ -201,6 +205,7 @@
 
     // Fallback: scan local subnet for MQTT port (handles Personal Hotspot)
     _mqttLog('MQTT: Bonjour failed, trying subnet scan...');
+    onStatusDetail?.call('Scanning local network...');
     return _scanSubnetForMqtt();
   }
 

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