Fix scanner barcode per i plu

SteUp.Shared/Core/BarcodeReader/BarcodeManager.cs

@@ -1,5 +1,8 @@
 using CommunityToolkit.Mvvm.Messaging;
+using Microsoft.Maui.Devices.Sensors;
 using SteUp.Shared.Core.BarcodeReader.Contracts;
+using SteUp.Shared.Core.BarcodeReader.Dto;
+using SteUp.Shared.Core.BarcodeReader.Enum;
 using SteUp.Shared.Core.Messages.Scanner;
 
 namespace SteUp.Shared.Core.BarcodeReader;
@@ -19,14 +22,31 @@ public class BarcodeManager(
         scanner.Register(
             onScanSuccessful: dto =>
             {
-                messenger.Send(new NewScannerMessage(dto.StringValue));
+                var stringValue = dto.StringValue;
+
+                if (IsEanPeso(dto))
+                    stringValue = DecodeEanPeso(stringValue);
+
+                messenger.Send(new NewScannerMessage(stringValue));
             },
-            onScanFailed: ex =>
-            {
-                messenger.Send(new ErrorScannerMessage(ex.Message));
-            }
+            onScanFailed: ex => { messenger.Send(new ErrorScannerMessage(ex.Message)); }
         );
 
         scanner.Init(() => { scanner.ChangeSettings([("TRIGGER_SCAN_MODE", "ONE_SHOT")]); });
     }
+
+    private static bool IsEanPeso(BarcodeScanDto barcodeScan) =>
+        (IsEtichetta128(barcodeScan) || IsEan13(barcodeScan)) && barcodeScan.StringValue is { Length: 13 } &&
+        barcodeScan.StringValue.StartsWith('2');
+
+    private static bool IsEtichetta128(BarcodeScanDto barcodeScan) =>
+        barcodeScan.Type is BarcodeType.CODE128 or BarcodeType.EAN128;
+
+    private static bool IsEan13(BarcodeScanDto barcodeScan) =>
+        barcodeScan.Type == BarcodeType.EAN13;
+
+    private static string DecodeEanPeso(string? barcode)
+    {
+        return barcode is not { Length: 13 } ? throw new Exception("Errore durante il parse del barcode (" + barcode + ")") : barcode.Substring(1, 6);
+    }
 }