Support onchain for prism

Plugins/BTCPayServer.Plugins.Prism/OnChainPrismDestinationValidator.cs

@@ -0,0 +1,59 @@
+using System;
+using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Contracts;
+using BTCPayServer.Data;
+using BTCPayServer.Payments;
+using NBitcoin;
+using NBXplorer;
+
+namespace BTCPayServer.Plugins.Prism;
+
+public class OnChainPrismDestinationValidator : IPluginHookFilter
+{
+    private readonly BTCPayNetworkProvider _networkProvider;
+    public string Hook => "prism-destination-validate";
+
+    public OnChainPrismDestinationValidator(BTCPayNetworkProvider networkProvider)
+    {
+        _networkProvider = networkProvider;
+    }
+
+    public Task<object> Execute(object args)
+    {
+        if (args is not string args1) return Task.FromResult(args);
+        var network = _networkProvider.GetNetwork<BTCPayNetwork>("BTC");
+        if (network is null)
+        {
+            return Task.FromResult(args);
+        }
+
+        try
+        {
+            
+            BitcoinAddress.Create(args1, network.NBitcoinNetwork);
+            return Task.FromResult<object>(new PrismDestinationValidationResult()
+            {
+                Success = true,
+                PaymentMethod = new PaymentMethodId("BTC", PaymentTypes.BTCLike)
+            });
+        }
+        catch (Exception e)
+        {
+            try
+            {
+                var parser = new DerivationSchemeParser(network);
+                var dsb = parser.Parse(args1);
+                return Task.FromResult<object>(new PrismDestinationValidationResult()
+                {
+                    Success = true,
+                    PaymentMethod = new PaymentMethodId("BTC", PaymentTypes.BTCLike)
+                });
+            }
+            catch (Exception)
+            {
+            }
+        }
+
+        return Task.FromResult(args);
+    }
+}