Add error handling for the predictor

WebServer/Components/Pages/Home.razor

@@ -46,6 +46,7 @@
                 <button @onclick="pull">@pullButtonText</button>
                 <button @onclick="train">@trainButtonText</button>
                 <button @onclick="predict">@predictButtonText</button>
+                <span>@PredictError</span>
             </div>
         </div>
     }
@@ -124,9 +125,11 @@
     string pullButtonText = "Pull Data";
     string trainButtonText = "Train AI";
     string predictButtonText = "Predict AI";
+    string PredictError = "";
 
     bool pullDebounce = true;
     async Task pull(){
+        PredictError = "";
         if (pullDebounce){
             pullDebounce = false;
             pullButtonText = "Do not refresh the page. The data is pulling.";
@@ -146,6 +149,7 @@
 
     bool trainDebounce = true;
     async Task train(){
+        PredictError = "";
         if (trainDebounce){
             trainDebounce = false;
             trainButtonText = "Do not refresh the page. The AI is training.";
@@ -164,12 +168,18 @@
     }
 
     async Task predict(){
+        PredictError = "";
         predictButtonText = "Do not refresh the page. The AI is predicting";
         await Task.Delay(1);
         List<Task> threadpool = new List<Task>();
         foreach(stockPredictionPair cur in predictions){
             Task thread = new Task(() => {
-                cur.Movement = aiModule.PredictAI(cur.Symbol);
+                (string, int)Result = aiModule.PredictAI(cur.Symbol);
+                if (string.IsNullOrEmpty(Result.Item1)){
+                    cur.Movement = Result.Item2;
+                }else{
+                    PredictError = Result.Item1;
+                }
                 Console.WriteLine("Received Signal [" + cur.Symbol + "] : " + cur.Movement);
             });
             thread.Start();

WebServer/Controllers/PythonInterop.cs

@@ -35,14 +35,19 @@ namespace PythonInterop {
             }
         }
 
-        public int PredictAI(string StockSymbol) {
+        // Return ( Error, Signal )
+        public (string, int) PredictAI(string StockSymbol) {
+            try {
                 using (Py.GIL()) {
                     dynamic predictor = Py.Import("ai-predictor");
                     using (dynamic x = predictor.Predict(StockSymbol)) {
                         int result = (int)x;
-                    return result;
+                        return ("", result);
                     }
                 }
+            } catch (Exception ex) {
+                return (ex.ToString(), 0);
+            }
         }
 
     }