fix: add submission guard and loading state to therapy save, deduplicate regression reports

patient/lib/repository/supabase_patient_repository.dart

@@ -238,13 +238,16 @@ class SupabasePatientRepository implements PatientRepository {
       .gte('performed_on', startDate.toIso8601String())
       .lte('performed_on', endDate.toIso8601String());
 
+      final Set<String> seenRegressions = {};
       List<String> regressions = [];
       for(var i = 0; i < regresstionResponse.length; i++) {
         final regression = regresstionResponse[i]['regressions'];
         for(var j = 0; j < regression.length; j++) {
           final regressionItem = regression[j] is String ? jsonDecode(regression[j]) : regression[j];
-
-          regressions.add(regressionItem['name']);
+          final String regressionName = regressionItem['name'];
+          if (seenRegressions.add(regressionName)) {
+            regressions.add(regressionName);
+          }
         }
       }
 

therapist/lib/presentation/therapy_goals/therapy_goals_screen.dart

@@ -115,6 +115,7 @@ class _TherapyGoalsScreenState extends State<TherapyGoalsScreen> {
         padding: const EdgeInsets.symmetric(horizontal: 22, vertical: 25),
         child: SaveTherapyButton(
           text: 'Save Therapy Details',
+          isLoading: therapyProvider.saveTherapyStatus.isLoading,
           onPressed: _onSaveTherapyDetails,
         ),
       ),

therapist/lib/presentation/therapy_goals/widgets/save_therapy_button.dart

@@ -6,31 +6,44 @@ class SaveTherapyButton extends StatelessWidget {
     super.key,
     required this.text,
     required this.onPressed,
+    this.isLoading = false,
   });
 
   final String text;
-  final VoidCallback onPressed;
-
+  final VoidCallback? onPressed;
+  final bool isLoading;
 
   @override
   Widget build(BuildContext context) {
     return GestureDetector(
-      onTap: onPressed,
-      child: Container(
-        width: double.infinity,
-        height: 50,
-        decoration: BoxDecoration(
-          color: AppTheme.primaryColor,
-          borderRadius: BorderRadius.circular(10),
-        ),
-        child: Center(
-          child: Text(
-            text,
-            style: const TextStyle(
-              color: Colors.white,
-              fontSize: 16,
-              fontWeight: FontWeight.w700,
-            ),
+      onTap: isLoading ? null : onPressed,
+      child: Opacity(
+        opacity: isLoading ? 0.6 : 1.0,
+        child: Container(
+          width: double.infinity,
+          height: 50,
+          decoration: BoxDecoration(
+            color: AppTheme.primaryColor,
+            borderRadius: BorderRadius.circular(10),
+          ),
+          child: Center(
+            child: isLoading
+                ? const SizedBox(
+                    height: 24,
+                    width: 24,
+                    child: CircularProgressIndicator(
+                      color: Colors.white,
+                      strokeWidth: 2.5,
+                    ),
+                  )
+                : Text(
+                    text,
+                    style: const TextStyle(
+                      color: Colors.white,
+                      fontSize: 16,
+                      fontWeight: FontWeight.w700,
+                    ),
+                  ),
           ),
         ),
       ),

therapist/lib/provider/therapy_provider.dart

@@ -219,27 +219,36 @@ class TherapyProvider extends ChangeNotifier {
     notifyListeners();
   }
 
-  void saveTherapyDetails() async {
+  Future<void> saveTherapyDetails() async {
+    if (_saveTherapyStatus.isLoading) return;
+
     _saveTherapyStatus = SaveTherapyStatus.loading;
-    final therapyGoalModel = TherapyGoalModel(
-      performedOn: _selectedDateTime ?? DateTime.now(),
-      therapyTypeId: _getTherapyIdFromSelectedTherapy(),
-      goals: _selectedTherapyGoals,
-      observations: _selectedTherapyObservations,
-      regressions: _selectedTherapyRegressions,
-      activities: _selectedTherapyActivities,
-      patientId: _patientId,
-    );
-
-    final ActionResult result = await _therapyRepository.saveTherapyGoals(therapyGoalModel.toEntity());
+    notifyListeners();
 
-    if(result is ActionResultSuccess) {
-      _saveTherapyStatus = SaveTherapyStatus.success;
-      _saveTherapyErrorMessage = '';
-      notifyListeners();
-    } else {
+    try {
+      final therapyGoalModel = TherapyGoalModel(
+        performedOn: _selectedDateTime ?? DateTime.now(),
+        therapyTypeId: _getTherapyIdFromSelectedTherapy(),
+        goals: _selectedTherapyGoals,
+        observations: _selectedTherapyObservations,
+        regressions: _selectedTherapyRegressions,
+        activities: _selectedTherapyActivities,
+        patientId: _patientId,
+      );
+
+      final ActionResult result = await _therapyRepository.saveTherapyGoals(therapyGoalModel.toEntity());
+
+      if (result is ActionResultSuccess) {
+        _saveTherapyStatus = SaveTherapyStatus.success;
+        _saveTherapyErrorMessage = '';
+      } else {
+        _saveTherapyStatus = SaveTherapyStatus.failure;
+        _saveTherapyErrorMessage = result.errorMessage.toString();
+      }
+    } catch (e) {
       _saveTherapyStatus = SaveTherapyStatus.failure;
-      _saveTherapyErrorMessage = result.errorMessage.toString();
+      _saveTherapyErrorMessage = e.toString();
+    } finally {
       notifyListeners();
     }
   }