From 87fd113c9f2f8c9f694434ef1898289b29fc657f Mon Sep 17 00:00:00 2001
From: Matthew <ramsden@hey.com>
Date: Thu, 26 Sep 2024 11:54:48 -0500
Subject: [PATCH] feat: esplora client get_tx

---
 bdk-ffi/src/bdk.udl    | 3 +++
 bdk-ffi/src/error.rs   | 9 +++++++++
 bdk-ffi/src/esplora.rs | 8 ++++++++
 3 files changed, 20 insertions(+)

diff --git a/bdk-ffi/src/bdk.udl b/bdk-ffi/src/bdk.udl
index 2c8876e4..f593982c 100644
--- a/bdk-ffi/src/bdk.udl
+++ b/bdk-ffi/src/bdk.udl
@@ -580,6 +580,9 @@ interface EsploraClient {
 
   [Throws=EsploraError]
   void broadcast([ByRef] Transaction transaction);
+
+  [Throws=EsploraError]
+  Transaction? get_tx(string txid);
 };
 
 // ------------------------------------------------------------------------
diff --git a/bdk-ffi/src/error.rs b/bdk-ffi/src/error.rs
index af9e3f0c..6707c0be 100644
--- a/bdk-ffi/src/error.rs
+++ b/bdk-ffi/src/error.rs
@@ -7,6 +7,7 @@ use bdk_wallet::bitcoin::address::FromScriptError as BdkFromScriptError;
 use bdk_wallet::bitcoin::address::ParseError as BdkParseError;
 use bdk_wallet::bitcoin::bip32::Error as BdkBip32Error;
 use bdk_wallet::bitcoin::consensus::encode::Error as BdkEncodeError;
+use bdk_wallet::bitcoin::hashes::hex::HexToArrayError as BdkHexToArrayError;
 use bdk_wallet::bitcoin::hex::DisplayHex;
 use bdk_wallet::bitcoin::psbt::Error as BdkPsbtError;
 use bdk_wallet::bitcoin::psbt::ExtractTxError as BdkExtractTxError;
@@ -1013,6 +1014,14 @@ impl From<Box<BdkEsploraError>> for EsploraError {
     }
 }
 
+impl From<BdkHexToArrayError> for EsploraError {
+    fn from(error: BdkHexToArrayError) -> Self {
+        EsploraError::Parsing {
+            error_message: error.to_string(),
+        }
+    }
+}
+
 impl From<BdkExtractTxError> for ExtractTxError {
     fn from(error: BdkExtractTxError) -> Self {
         match error {
diff --git a/bdk-ffi/src/esplora.rs b/bdk-ffi/src/esplora.rs
index 76d1d77e..934a9079 100644
--- a/bdk-ffi/src/esplora.rs
+++ b/bdk-ffi/src/esplora.rs
@@ -6,6 +6,7 @@ use crate::types::{FullScanRequest, SyncRequest};
 use bdk_esplora::esplora_client::{BlockingClient, Builder};
 use bdk_esplora::EsploraExt;
 use bdk_wallet::bitcoin::Transaction as BdkTransaction;
+use bdk_wallet::bitcoin::Txid;
 use bdk_wallet::chain::spk_client::FullScanRequest as BdkFullScanRequest;
 use bdk_wallet::chain::spk_client::FullScanResult as BdkFullScanResult;
 use bdk_wallet::chain::spk_client::SyncRequest as BdkSyncRequest;
@@ -14,6 +15,7 @@ use bdk_wallet::KeychainKind;
 use bdk_wallet::Update as BdkUpdate;
 
 use std::collections::BTreeMap;
+use std::str::FromStr;
 use std::sync::Arc;
 
 pub struct EsploraClient(BlockingClient);
@@ -81,4 +83,10 @@ impl EsploraClient {
             .broadcast(&bdk_transaction)
             .map_err(EsploraError::from)
     }
+
+    pub fn get_tx(&self, txid: String) -> Result<Option<Arc<Transaction>>, EsploraError> {
+        let txid = Txid::from_str(&txid)?;
+        let tx_opt = self.0.get_tx(&txid)?;
+        Ok(tx_opt.map(|inner| Arc::new(Transaction::from(inner))))
+    }
 }