Miscellanous updates and boilerplate

src/backend/blindbit/backend/backend.rs

@@ -10,6 +10,7 @@ use crate::{backend::blindbit::BlindbitClient, BlockData, ChainBackend, SpentInd
 
 const CONCURRENT_FILTER_REQUESTS: usize = 200;
 
+#[derive(Debug)]
 pub struct BlindbitBackend {
     client: BlindbitClient,
 }

src/backend/blindbit/client/client.rs

@@ -11,7 +11,7 @@ use super::structs::{
     BlockHeightResponse, FilterResponse, ForwardTxRequest, SpentIndexResponse, UtxoResponse,
 };
 
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct BlindbitClient {
     client: Client,
     host_url: Url,
@@ -29,6 +29,7 @@ impl BlindbitClient {
 
         Ok(BlindbitClient { client, host_url })
     }
+
     pub async fn block_height(&self) -> Result<Height> {
         let url = self.host_url.join("block-height")?;
 

src/client/spend.rs

@@ -33,7 +33,7 @@ impl SpClient {
         &self,
         available_utxos: Vec<(OutPoint, OwnedOutput)>,
         mut recipients: Vec<Recipient>,
-        fee_rate: f32,
+        fee_rate: FeeRate,
         network: Network,
     ) -> Result<SilentPaymentUnsignedTransaction> {
         // check that all available outputs are unspent
@@ -123,7 +123,7 @@ impl SpClient {
             ChangePolicy::min_value(DrainWeights::TR_KEYSPEND, TR_DUST_RELAY_MIN_VALUE);
 
         let target = Target {
-            fee: TargetFee::from_feerate(FeeRate::from_sat_per_vb(fee_rate)),
+            fee: TargetFee::from_feerate(fee_rate),
             outputs: TargetOutputs::fund_outputs(
                 tx_outs
                     .iter()
@@ -450,7 +450,7 @@ impl SpClient {
         Ok(signed)
     }
 
-    fn get_partial_secret_for_selected_utxos(
+    pub fn get_partial_secret_for_selected_utxos(
         &self,
         selected_utxos: &[(OutPoint, OwnedOutput)],
     ) -> Result<SecretKey> {

src/client/structs.rs

@@ -71,6 +71,7 @@ pub struct Recipient {
     pub amount: Amount,            // must be 0 if address is Data.
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 // this will be replaced by a proper psbt as soon as sp support is standardised
 pub struct SilentPaymentUnsignedTransaction {
     pub selected_utxos: Vec<(OutPoint, OwnedOutput)>,

src/lib.rs

@@ -4,6 +4,7 @@ pub mod constants;
 mod scanner;
 mod updater;
 
+pub use bdk_coin_select::FeeRate;
 pub use bitcoin;
 pub use silentpayments;