added status to sharedprefs, refactored buttons and added button functionality

lib/shared_preferences_provider.dart

@@ -50,4 +50,14 @@ class SharedPreferencesProvider extends ChangeNotifier {
     await prefs.setString('userLogo', image!);
     notifyListeners();
   }
+
+  // New methods to get and set the current status
+  String getCurrentStatus() {
+    return prefs.getString('currentStatus') ?? '';
+  }
+
+  Future<void> setCurrentStatus(String status) async {
+    await prefs.setString('currentStatus', status);
+    notifyListeners();
+  }
 }

lib/status_page.dart

@@ -38,18 +38,53 @@ class StatusPageState extends State<StatusPage> {
     return messages.where((message) => message['Status'] == status).toList();
   }
 
-  void _sendStatus(String id, String name, String? image, String status) {
+  void _sendStatus(String id, String name, String? image, String status) async {
+    final prefsProvider =
+        Provider.of<SharedPreferencesProvider>(context, listen: false);
+
+    if (!mounted) return;
+
+    // Check if the status is already active; if so, clear it, otherwise set it
+    final isStatusActive = prefsProvider.getCurrentStatus() == status;
+    final newStatus = isStatusActive ? '' : status;
+
+    // Update the status in SharedPreferences
+    await prefsProvider.setCurrentStatus(newStatus);
+
+    // Send the message to the WebSocket
     final message = jsonEncode({
       'Id': id,
       'Name': name,
       'Image': image,
-      'Status': status,
+      'Status': newStatus.isEmpty ? 'expired' : newStatus,
       'Timestamp': DateTime.now().toIso8601String(),
     });
     channel.sink.add(message);
-    ScaffoldMessenger.of(context).showSnackBar(
-      SnackBar(content: Text('Status "$status" sent!')),
-    );
+
+    if (mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+            content: Text(
+                'Status "${newStatus.isEmpty ? 'cleared' : newStatus}" sent!')),
+      );
+    }
+  }
+
+  void _handleIncomingMessage(Map<String, dynamic> message) async {
+    final prefsProvider =
+        Provider.of<SharedPreferencesProvider>(context, listen: false);
+
+    final status = message['Status'];
+    final incomingId = message['Id'];
+
+    messages.removeWhere((msg) => msg['Id'] == incomingId);
+
+    // Check if the message status is "expired" and update SharedPreferences
+    if (status == 'expired') {
+      await prefsProvider.setCurrentStatus('');
+    } else {
+      messages.add(message);
+    }
   }
 
   Widget _buildMessageItem(Map<String, dynamic> message) {
@@ -94,6 +129,20 @@ class StatusPageState extends State<StatusPage> {
     );
   }
 
+  // Function to get the background color based on the current status
+  Color getButtonColor(String buttonStatus) {
+    final prefsProvider = Provider.of<SharedPreferencesProvider>(context);
+    final currentStatus = prefsProvider.getCurrentStatus();
+    return currentStatus == buttonStatus ? Colors.blueAccent : Colors.grey;
+  }
+
+  // Function to get the text color based on the current status
+  Color getButtonTextColor(String buttonStatus) {
+    final prefsProvider = Provider.of<SharedPreferencesProvider>(context);
+    final currentStatus = prefsProvider.getCurrentStatus();
+    return currentStatus == buttonStatus ? Colors.white : Colors.black;
+  }
+
   @override
   Widget build(BuildContext context) {
     final prefsProvider = Provider.of<SharedPreferencesProvider>(context);
@@ -115,13 +164,7 @@ class StatusPageState extends State<StatusPage> {
           if (snapshot.hasData) {
             final newMessage =
                 jsonDecode(snapshot.data as String) as Map<String, dynamic>;
-
-            final incomingId = newMessage['Id'];
-            messages.removeWhere((msg) => msg['Id'] == incomingId);
-            if (newMessage['Status'] != 'expired' &&
-                newMessage['Status'] != "is leaving") {
-              messages.add(newMessage);
-            }
+            _handleIncomingMessage(newMessage);
           }
 
           final onTheWayMessages = _getMessagesByStatus('is on the way');
@@ -181,19 +224,28 @@ class StatusPageState extends State<StatusPage> {
                   mainAxisAlignment: MainAxisAlignment.spaceAround,
                   children: [
                     ElevatedButton(
+                      style: ElevatedButton.styleFrom(
+                        backgroundColor: getButtonColor('is on the way'),
+                      ),
                       onPressed: () => _sendStatus(
                           userId, userName, userLogo, 'is on the way'),
-                      child: const Text('On the Way'),
+                      child: Text(
+                        'On the Way',
+                        style: TextStyle(
+                            color: getButtonTextColor('is on the way')),
+                      ),
                     ),
                     ElevatedButton(
+                      style: ElevatedButton.styleFrom(
+                        backgroundColor: getButtonColor('has arrived'),
+                      ),
                       onPressed: () => _sendStatus(
                           userId, userName, userLogo, 'has arrived'),
-                      child: const Text('Arrived'),
-                    ),
-                    ElevatedButton(
-                      onPressed: () =>
-                          _sendStatus(userId, userName, userLogo, 'is leaving'),
-                      child: const Text('Leaving'),
+                      child: Text(
+                        'Arrived',
+                        style:
+                            TextStyle(color: getButtonTextColor('has arrived')),
+                      ),
                     ),
                     IconButton(
                       icon: const Icon(Icons.edit, color: Colors.blueAccent),