first commit

BTCPayServer.Plugins.Breez/BreezLightningConnectionStringHandler.cs

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+using BTCPayServer.Lightning;
+using NBitcoin;
+
+namespace BTCPayServer.Plugins.Breez;
+
+public class BreezLightningConnectionStringHandler : ILightningConnectionStringHandler
+{
+    private readonly BreezService _breezService;
+
+    public BreezLightningConnectionStringHandler(BreezService breezService)
+    {
+        _breezService = breezService;
+    }
+    public ILightningClient? Create(string connectionString, Network network, out string? error)
+    {
+        var kv = LightningConnectionStringHelper.ExtractValues(connectionString, out var type);
+        if (type != "breez")
+        {
+            error = null;
+            return null;
+        }
+
+        
+        if (!kv.TryGetValue("key", out var key))
+        {
+            error = $"The key 'key' is mandatory for breez connection strings";
+            return null;
+        }
+        
+        error = null;
+        return _breezService.GetClientByPaymentKey(key);
+    }
+}