Add endpoint to get ne onchain BTC address

ln/lnd.go

@@ -50,6 +50,18 @@ func (c LNDclient) AddInvoice(value int64, memo string) (Invoice, error) {
 	return result, nil
 }
 
+func (c LNDclient) NewAddress() (string, error) {
+	stdOutLogger.Printf("Getting a new BTC address")
+  request := lnrpc.NewAddressRequest{
+    Type: lnrpc.AddressType_WITNESS_PUBKEY_HASH,
+  }
+  res, err := c.lndClient.NewAddress(c.ctx, &request)
+  if err != nil {
+    return "", err
+  }
+  return res.Address, nil
+}
+
 // GetInvoice takes an invoice ID and returns the invoice details including settlement details
 // An error is returned if no corresponding invoice was found.
 func (c LNDclient) GetInvoice(paymentHashStr string) (Invoice, error) {

lnme.go

@@ -102,6 +102,15 @@ func main() {
 		return c.JSON(http.StatusOK, invoice)
 	})
 
+  e.POST("/v1/newaddress", func(c echo.Context) error {
+    address, err := lnClient.NewAddress()
+    if err != nil {
+			stdOutLogger.Printf("Error getting a new BTC address: %s", err)
+			return c.JSON(http.StatusInternalServerError, "Error getting address")
+    }
+    return c.JSON(http.StatusOK, address)
+  })
+
 	e.GET("/v1/invoice/:invoiceId", func(c echo.Context) error {
 		invoiceId := c.Param("invoiceId")
 		invoice, err := lnClient.GetInvoice(invoiceId)