lnrpc: add MinConfs to WalletBalanceRequest

lnrpc/lightning.proto

@@ -2847,6 +2847,11 @@ message WalletBalanceRequest {
     // The wallet account the balance is shown for.
     // If this is not specified, the balance of the "default" account is shown.
     string account = 1;
+
+    // The minimum number of confirmations each one of your outputs used for the
+    // funding transaction must satisfy. If this is not specified, the default
+    // value of 1 is used.
+    int32 min_confs = 2;
 }
 
 message WalletBalanceResponse {

lnrpc/lightning.swagger.json

@@ -64,6 +64,14 @@
             "in": "query",
             "required": false,
             "type": "string"
+          },
+          {
+            "name": "min_confs",
+            "description": "The minimum number of confirmations each one of your outputs used for the\nfunding transaction must satisfy. If this is not specified, the default\nvalue of 1 is used.",
+            "in": "query",
+            "required": false,
+            "type": "integer",
+            "format": "int32"
           }
         ],
         "tags": [

rpcserver.go

@@ -3292,8 +3292,11 @@ func (r *rpcServer) WalletBalance(ctx context.Context,
 		// Get confirmed balance, from txs that have >= 1 confirmations.
 		// TODO(halseth): get both unconfirmed and confirmed balance in
 		// one call, as this is racy.
+		if in.MinConfs <= 0 {
+			in.MinConfs = 1
+		}
 		confirmedBal, err := r.server.cc.Wallet.ConfirmedBalance(
-			1, account.AccountName,
+			in.MinConfs, account.AccountName,
 		)
 		if err != nil {
 			return nil, err