Add support for getting and accepting quotes

src/swaps/boltz.rs

@@ -17,10 +17,10 @@
 //!     output_amount - base_fees - claim_fee
 //! );
 
-use bitcoin::key;
 use bitcoin::{
     hashes::sha256, hex::DisplayHex, taproot::TapLeaf, PublicKey, ScriptBuf, Transaction,
 };
+use bitcoin::{key, Amount};
 use lightning_invoice::Bolt11Invoice;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
@@ -564,6 +564,28 @@ impl BoltzApiClientV2 {
         let end_point = format!("chain/{}/transaction", chain);
         Ok(serde_json::from_str(&self.post(&end_point, data)?)?)
     }
+
+    /// Looks up the quote for a Zero-Amount Receive Chain Swap.
+    ///
+    /// If the user locked up a valid amount, it will return the server lockup amount. In all other
+    /// cases, it will return an error.
+    pub fn get_quote(&self, swap_id: &str) -> Result<GetQuoteResponse, Error> {
+        let end_point = format!("swap/chain/{swap_id}/quote");
+        Ok(serde_json::from_str(&self.get(&end_point)?)?)
+    }
+
+    /// Accepts a specific quote for a Zero-Amount Receive Chain Swap.
+    pub fn accept_quote(&self, swap_id: &str, amount_sat: u64) -> Result<(), Error> {
+        let data = json!(
+            {
+                "amount": amount_sat
+            }
+        );
+
+        let end_point = format!("swap/chain/{swap_id}/quote");
+        self.post(&end_point, data)?;
+        Ok(())
+    }
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -1284,6 +1306,13 @@ pub struct GetFeeEstimationResponse {
     pub lbtc: f64,
 }
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct GetQuoteResponse {
+    /// Server lockup amount, in sat
+    pub amount: u64,
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;