Make sideshift extend prism in a better way

Plugins/BTCPayServer.Plugins.SideShift/PrismClaimCreate.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Net.Http;
+using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Contracts;
+using BTCPayServer.Data.Payouts.LightningLike;
+using BTCPayServer.HostedServices;
+using BTCPayServer.Lightning;
+using Newtonsoft.Json.Linq;
+
+namespace BTCPayServer.Plugins.SideShift;
+
+public class PrismClaimCreate : IPluginHookFilter
+{
+    private readonly IHttpClientFactory _httpClientFactory;
+    private readonly BTCPayNetworkProvider _networkProvider;
+    public string Hook => "prism-claim-create";
+
+    public PrismClaimCreate(IHttpClientFactory httpClientFactory, BTCPayNetworkProvider networkProvider)
+    {
+        _httpClientFactory = httpClientFactory;
+        _networkProvider = networkProvider;
+    }
+    public async Task<object> Execute(object args)
+    {
+        var network = _networkProvider.GetNetwork<BTCPayNetwork>("BTC");
+        if (args is not ClaimRequest claimRequest || network is null)
+        {
+            return Task.FromResult(args);
+        }
+        
+        if (claimRequest.Destination?.ToString() is not { } args1 || !args1.StartsWith("sideshift:")) return args;
+        var request  = JObject.Parse(args1.Substring("sideshift:".Length)).ToObject<PrismSideshiftDestination>();
+        if (!request.Valid())
+        {
+            return null;
+        }
+        var client = _httpClientFactory.CreateClient("sideshift");
+            
+            
+        var shiftResponse = await client.PostAsJsonAsync("https://sideshift.ai/api/v2/shifts/variable", new
+            {
+                settleAddress = request.ShiftDestination,
+                affiliateId = "qg0OrfHJV",
+                settleMemo = request.ShiftMemo,
+                depositCoin = "BTC",
+                depositNetwork = "lightning",
+                settleCoin = request.ShiftCoin,
+                settleNetwork = request.ShiftNetwork,
+            }
+        );
+        if (!shiftResponse.IsSuccessStatusCode)
+        {
+            return null;
+        }
+        var shift = await shiftResponse.Content.ReadAsAsync<SideShiftController.ShiftResponse>();
+        try
+        {
+            LNURL.LNURL.Parse(shift.depositAddress, out _);
+            claimRequest.Destination = new LNURLPayClaimDestinaton(shift.depositAddress);
+            claimRequest.Metadata = JObject.FromObject(new
+            {
+                Source = $"Prism->Sideshift",
+                SourceLink = $"https://sideshift.ai/orders/{shift.id}?openSupport=true",
+            });
+            return claimRequest;
+        }
+        catch (Exception e)
+        {
+            if (BOLT11PaymentRequest.TryParse(shift.depositAddress, out var bolt11,  network.NBitcoinNetwork))
+            {
+                claimRequest.Destination =  new BoltInvoiceClaimDestination(shift.depositAddress, bolt11);
+                claimRequest.Metadata = JObject.FromObject(new
+                {
+                    Source = $"Prism->Sideshift",
+                    SourceLink = $"https://sideshift.ai/orders/{shift.id}?openSupport=true",
+                });
+                return claimRequest;
+            }
+        }
+
+        return null;
+
+    }
+}