feat: add MVP transaction builder type

bitcoindevkit · Oct 19, 2023 · 3691c6e · 3691c6e
1 parent 2541a92
commit 3691c6e
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Showing 4 changed files with 333 additions and 292 deletions.
diff --git a/bdk-ffi/src/bdk.udl b/bdk-ffi/src/bdk.udl
@@ -1,7 +1,7 @@
 namespace bdk {};
 
 // ------------------------------------------------------------------------
-// bdk crate
+// bdk crate - root module
 // ------------------------------------------------------------------------
 
 enum KeychainKind {
@@ -86,34 +86,15 @@ interface Wallet {
 
 interface Update {};
 
-// ------------------------------------------------------------------------
-// bdk crate - bitcoin reexports
-// ------------------------------------------------------------------------
+interface TxBuilder {
+  constructor();
 
-enum Network {
-  "Bitcoin",
-  "Testnet",
-  "Signet",
-  "Regtest",
-};
+  TxBuilder add_recipient(Script script, u64 amount);
 
-enum WordCount {
-  "Words12",
-  "Words15",
-  "Words18",
-  "Words21",
-  "Words24",
-};
+  TxBuilder fee_rate(float sat_per_vbyte);
 
-interface Address {
   [Throws=BdkError]
-  constructor(string address, Network network);
-
-  Network network();
-
-  string to_qr_uri();
-
-  string as_string();
+  string finish([ByRef] Wallet wallet);
 };
 
 // ------------------------------------------------------------------------
@@ -212,3 +193,41 @@ interface EsploraClient {
   [Throws=BdkError]
   Update scan(Wallet wallet, u64 stop_gap, u64 parallel_requests);
 };
+
+// ------------------------------------------------------------------------
+// bdk crate - bitcoin reexports
+// ------------------------------------------------------------------------
+
+enum Network {
+  "Bitcoin",
+  "Testnet",
+  "Signet",
+  "Regtest",
+};
+
+enum WordCount {
+  "Words12",
+  "Words15",
+  "Words18",
+  "Words21",
+  "Words24",
+};
+
+interface Address {
+  [Throws=BdkError]
+  constructor(string address, Network network);
+
+  Network network();
+
+  Script script_pubkey();
+
+  string to_qr_uri();
+
+  string as_string();
+};
+
+interface Script {
+  constructor(sequence<u8> raw_output_script);
+
+  sequence<u8> to_bytes();
+};
diff --git a/bdk-ffi/src/lib.rs b/bdk-ffi/src/lib.rs
@@ -5,6 +5,7 @@ mod psbt;
 mod wallet;
 
 use bdk::bitcoin::address::{NetworkChecked, NetworkUnchecked};
+use bdk::bitcoin::blockdata::script::ScriptBuf as BdkScriptBuf;
 use bdk::bitcoin::Address as BdkAddress;
 use bdk::bitcoin::Network as BdkNetwork;
 use bdk::wallet::AddressIndex as BdkAddressIndex;
@@ -21,6 +22,7 @@ use crate::keys::DerivationPath;
 use crate::keys::DescriptorPublicKey;
 use crate::keys::DescriptorSecretKey;
 use crate::keys::Mnemonic;
+use crate::wallet::TxBuilder;
 use crate::wallet::Update;
 use crate::wallet::Wallet;
 use bdk::keys::bip39::WordCount;
@@ -452,11 +454,11 @@ impl Address {
         self.inner.network.into()
     }
 
-    // fn script_pubkey(&self) -> Arc<Script> {
-    //     Arc::new(Script {
-    //         inner: self.inner.script_pubkey(),
-    //     })
-    // }
+    fn script_pubkey(&self) -> Arc<Script> {
+        Arc::new(Script {
+            inner: self.inner.script_pubkey(),
+        })
+    }
 
     fn to_qr_uri(&self) -> String {
         self.inner.to_qr_uri()
@@ -494,24 +496,24 @@ impl From<Address> for BdkAddress {
 //         program: Vec<u8>,
 //     },
 // }
-//
-// /// A Bitcoin script.
-// #[derive(Clone, Debug, PartialEq, Eq)]
-// pub struct Script {
-//     inner: BdkScript,
-// }
-//
-// impl Script {
-//     fn new(raw_output_script: Vec<u8>) -> Self {
-//         let script: BdkScript = BdkScript::from(raw_output_script);
-//         Script { inner: script }
-//     }
-//
-//     fn to_bytes(&self) -> Vec<u8> {
-//         self.inner.to_bytes()
-//     }
-// }
-//
+
+/// A Bitcoin script.
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub struct Script {
+    inner: BdkScriptBuf,
+}
+
+impl Script {
+    fn new(raw_output_script: Vec<u8>) -> Self {
+        let script: BdkScriptBuf = BdkScriptBuf::from(raw_output_script);
+        Script { inner: script }
+    }
+
+    fn to_bytes(&self) -> Vec<u8> {
+        self.inner.to_bytes()
+    }
+}
+
 // impl From<BdkScript> for Script {
 //     fn from(bdk_script: BdkScript) -> Self {
 //         Script { inner: bdk_script }