Add AppState.covers

This set contains all the covers the server offers. This commit does not
include displaying it.

1 files changed, 15 insertions, 0 deletions

diff --git a/lib/data.dart b/lib/data.dart
index 201550e..a2e26b3 100644
--- a/lib/data.dart
+++ b/lib/data.dart
@@ -51,6 +51,7 @@ class AppState with ChangeNotifier {
   MachineState state = MachineState.init;
 
   Map<String, bool> contacts = <String, bool>{};
+  Set<String> covers = <String>{};
   late MqttServerClient _client;
 
   late Directory supportDir;
@@ -141,6 +142,7 @@ class AppState with ChangeNotifier {
 
   void _onConnected() {
     _client.subscribe('$topicPrefix/contact/+/state', MqttQos.exactlyOnce);
+    _client.subscribe('$topicPrefix/cover/+', MqttQos.exactlyOnce);
     _client.subscribe('$topicPrefix/server/health', MqttQos.exactlyOnce);
 
     process(MachineEvent.connected);
@@ -148,6 +150,7 @@ class AppState with ChangeNotifier {
 
   void _onDisconnected() {
     contacts = <String, bool>{};
+    covers = <String>{};
     process(MachineEvent.disconnected);
   }
 
@@ -175,6 +178,12 @@ class AppState with ChangeNotifier {
         _onContactMessage(payload, address);
         return;
       }
+
+      if (parts.length == 3 && parts[1] == 'cover') {
+        String id = parts[2];
+        _onCoverMessage(payload, id);
+        return;
+      }
     }
   }
 
@@ -196,6 +205,12 @@ class AppState with ChangeNotifier {
     }
   }
 
+  void _onCoverMessage(String payload, String id) {
+    if (payload != 'exists') return;
+
+    covers.add(id);
+  }
+
   bool? _parseBool(String payload) {
     switch (payload.toLowerCase()) {
       case 'open':