feat: Add method to get block by hash for esplora

Author: ItoroD

bdk-ffi/src/bitcoin.rs

@@ -11,6 +11,7 @@ use std::collections::HashMap;
 use bdk_wallet::bitcoin::address::NetworkChecked;
 use bdk_wallet::bitcoin::address::NetworkUnchecked;
 use bdk_wallet::bitcoin::address::{Address as BdkAddress, AddressData as BdkAddressData};
+use bdk_wallet::bitcoin::blockdata::block::Block as BdkBlock;
 use bdk_wallet::bitcoin::blockdata::block::Header as BdkHeader;
 use bdk_wallet::bitcoin::consensus::encode::deserialize;
 use bdk_wallet::bitcoin::consensus::encode::serialize;
@@ -299,6 +300,27 @@ impl From<BdkHeader> for Header {
     }
 }
 
+/// Bitcoin block.
+/// A collection of transactions with an attached proof of work.
+#[derive(uniffi::Record)]
+pub struct Block {
+    pub header: Header,
+    pub txdata: Vec<Arc<Transaction>>,
+}
+
+impl From<BdkBlock> for Block {
+    fn from(bdk_block: BdkBlock) -> Self {
+        Block {
+            header: bdk_block.header.into(),
+            txdata: bdk_block
+                .txdata
+                .into_iter()
+                .map(|tx| Arc::new(tx.into()))
+                .collect(),
+        }
+    }
+}
+
 /// The type of address.
 #[derive(Debug, uniffi::Enum)]
 pub enum AddressData {

bdk-ffi/src/esplora.rs

@@ -1,4 +1,5 @@
 use crate::bitcoin::Address;
+use crate::bitcoin::Block;
 use crate::bitcoin::BlockHash;
 use crate::bitcoin::Header;
 use crate::bitcoin::Transaction;
@@ -178,6 +179,17 @@ impl EsploraClient {
             .map_err(EsploraError::from)
     }
 
+    /// Get a Block given a particular BlockHash.
+    pub fn get_block_by_hash(
+        &self,
+        block_hash: Arc<BlockHash>,
+    ) -> Result<Option<Block>, EsploraError> {
+        self.0
+            .get_block_by_hash(&block_hash.0)
+            .map(|block| block.map(|block| block.into()))
+            .map_err(EsploraError::from)
+    }
+
     /// Get a `Txid` of a transaction given its index in a block with a given hash.
     pub fn get_txid_at_block_index(
         &self,