Changes the return

libs/sdk-bindings/src/breez_sdk.udl

@@ -471,8 +471,7 @@ dictionary PrepareWithdrawRequest {
 };
 
 dictionary PrepareWithdrawResponse {
-    string raw_tx_hex;
-    u32 sat_per_vbyte;
+    u32 weight;
     u64 fee_sat;
 };
 

libs/sdk-core/src/bridge_generated.rs

@@ -1235,12 +1235,7 @@ impl support::IntoDart for PaymentType {
 impl support::IntoDartExceptPrimitive for PaymentType {}
 impl support::IntoDart for PrepareWithdrawResponse {
     fn into_dart(self) -> support::DartAbi {
-        vec![
-            self.raw_tx_hex.into_dart(),
-            self.sat_per_vbyte.into_dart(),
-            self.fee_sat.into_dart(),
-        ]
-        .into_dart()
+        vec![self.weight.into_dart(), self.fee_sat.into_dart()].into_dart()
     }
 }
 impl support::IntoDartExceptPrimitive for PrepareWithdrawResponse {}

libs/sdk-core/src/greenlight/node_api.rs

@@ -25,7 +25,6 @@ use gl_client::signer::Signer;
 use gl_client::tls::TlsConfig;
 use gl_client::{node, pb, utils};
 use lightning::util::message_signing::verify;
-use lightning::util::ser::Writeable;
 use lightning_invoice::{RawInvoice, SignedRawInvoice};
 use serde::{Deserialize, Serialize};
 use strum_macros::{Display, EnumString};
@@ -500,8 +499,7 @@ impl NodeAPI for Greenlight {
         debug!("tx_prepare response: {:?}", response);
         debug!("raw_tx_hex: {:?}", String::from_utf8(response.unsigned_tx)?);
         return Ok(PrepareWithdrawResponse {
-            raw_tx_hex: String::new(), //String::from_utf8(response.unsigned_tx)?,
-            sat_per_vbyte: prepare_withdraw_request.fee_rate_sats_per_vbyte,
+            weight: 10,
             fee_sat: 50,
         });
     }

libs/sdk-core/src/models.rs

@@ -1018,12 +1018,10 @@ pub struct PrepareWithdrawRequest {
 }
 
 /// We need to prepare a withdraw transaction to know what a fee it will be charged in satoshis
-/// this model holds the response data, which consists of the raw transaction hex, the fee rate in
-/// vbyte and the consolidate fee in satoshis.
+/// this model holds the response data, which consists of the weight and the absolute fee in sats
 #[derive(PartialEq, Eq, Debug, Clone, Deserialize, Serialize)]
 pub struct PrepareWithdrawResponse {
-    pub raw_tx_hex: String,
-    pub sat_per_vbyte: u32,
+    pub weight: u32,
     pub fee_sat: u64,
 }
 

libs/sdk-flutter/lib/bridge_generated.dart

@@ -972,16 +972,13 @@ class PrepareWithdrawRequest {
 }
 
 /// We need to prepare a withdraw transaction to know what a fee it will be charged in satoshis
-/// this model holds the response data, which consists of the raw transaction hex, the fee rate in
-/// vbyte and the consolidate fee in satoshis.
+/// this model holds the response data, which consists of the weight and the absolute fee in sats
 class PrepareWithdrawResponse {
-  final String rawTxHex;
-  final int satPerVbyte;
+  final int weight;
   final int feeSat;
 
   const PrepareWithdrawResponse({
-    required this.rawTxHex,
-    required this.satPerVbyte,
+    required this.weight,
     required this.feeSat,
   });
 }
@@ -2724,11 +2721,10 @@ class BreezSdkCoreImpl implements BreezSdkCore {
 
   PrepareWithdrawResponse _wire2api_prepare_withdraw_response(dynamic raw) {
     final arr = raw as List<dynamic>;
-    if (arr.length != 3) throw Exception('unexpected arr length: expect 3 but see ${arr.length}');
+    if (arr.length != 2) throw Exception('unexpected arr length: expect 2 but see ${arr.length}');
     return PrepareWithdrawResponse(
-      rawTxHex: _wire2api_String(arr[0]),
-      satPerVbyte: _wire2api_u32(arr[1]),
-      feeSat: _wire2api_u64(arr[2]),
+      weight: _wire2api_u32(arr[0]),
+      feeSat: _wire2api_u64(arr[1]),
     );
   }