From e766f3fbb1aa81a44eec7d7192cd5fce39f1d9f9 Mon Sep 17 00:00:00 2001
From: thesimplekid <tsk@thesimplekid.com>
Date: Thu, 9 May 2024 11:01:59 +0100
Subject: [PATCH] feat(bindings): melted getters

---
 bindings/cdk-js/src/nuts/nut00/token.rs   | 13 +++++++++++++
 bindings/cdk-js/src/nuts/nut00/witness.rs |  5 +++++
 bindings/cdk-js/src/types/melted.rs       | 20 ++++++++++++++++++++
 crates/cdk/src/nuts/nut00.rs              |  7 +++++++
 4 files changed, 45 insertions(+)

diff --git a/bindings/cdk-js/src/nuts/nut00/token.rs b/bindings/cdk-js/src/nuts/nut00/token.rs
index 83a810b1..051954b8 100644
--- a/bindings/cdk-js/src/nuts/nut00/token.rs
+++ b/bindings/cdk-js/src/nuts/nut00/token.rs
@@ -1,8 +1,11 @@
 use std::ops::Deref;
+use std::str::FromStr;
 
 use cdk::nuts::Token;
 use wasm_bindgen::prelude::*;
 
+use crate::error::{into_err, Result};
+
 #[wasm_bindgen(js_name = Token)]
 pub struct JsToken {
     inner: Token,
@@ -20,3 +23,13 @@ impl From<Token> for JsToken {
         JsToken { inner }
     }
 }
+
+#[wasm_bindgen(js_class = Token)]
+impl JsToken {
+    #[wasm_bindgen(constructor)]
+    pub fn new(token: String) -> Result<JsToken> {
+        Ok(Self {
+            inner: Token::from_str(&token).map_err(into_err)?,
+        })
+    }
+}
diff --git a/bindings/cdk-js/src/nuts/nut00/witness.rs b/bindings/cdk-js/src/nuts/nut00/witness.rs
index 867846b7..8c16481f 100644
--- a/bindings/cdk-js/src/nuts/nut00/witness.rs
+++ b/bindings/cdk-js/src/nuts/nut00/witness.rs
@@ -44,4 +44,9 @@ impl JsWitness {
     pub fn signatures(&self) -> Option<Vec<String>> {
         self.inner.signatures()
     }
+
+    #[wasm_bindgen(getter)]
+    pub fn preimage(&self) -> Option<String> {
+        self.inner.preimage()
+    }
 }
diff --git a/bindings/cdk-js/src/types/melted.rs b/bindings/cdk-js/src/types/melted.rs
index 3b9cb8ac..2e3e143a 100644
--- a/bindings/cdk-js/src/types/melted.rs
+++ b/bindings/cdk-js/src/types/melted.rs
@@ -3,6 +3,8 @@ use std::ops::Deref;
 use cdk::types::Melted;
 use wasm_bindgen::prelude::*;
 
+use crate::error::Result;
+
 #[wasm_bindgen(js_name = Melted)]
 pub struct JsMelted {
     inner: Melted,
@@ -20,3 +22,21 @@ impl From<Melted> for JsMelted {
         JsMelted { inner }
     }
 }
+
+#[wasm_bindgen(js_class = Melted)]
+impl JsMelted {
+    #[wasm_bindgen(getter)]
+    pub fn paid(&self) -> bool {
+        self.inner.paid
+    }
+
+    #[wasm_bindgen(getter)]
+    pub fn preimage(&self) -> Option<String> {
+        self.inner.preimage.clone()
+    }
+
+    #[wasm_bindgen(getter)]
+    pub fn change(&self) -> Result<JsValue> {
+        Ok(serde_wasm_bindgen::to_value(&self.inner.change)?)
+    }
+}
diff --git a/crates/cdk/src/nuts/nut00.rs b/crates/cdk/src/nuts/nut00.rs
index ec596c5e..8a4bf719 100644
--- a/crates/cdk/src/nuts/nut00.rs
+++ b/crates/cdk/src/nuts/nut00.rs
@@ -159,6 +159,13 @@ impl Witness {
             Self::HTLCWitness(witness) => witness.signatures.clone(),
         }
     }
+
+    pub fn preimage(&self) -> Option<String> {
+        match self {
+            Self::P2PKWitness(_witness) => None,
+            Self::HTLCWitness(witness) => Some(witness.preimage.clone()),
+        }
+    }
 }
 
 /// Proofs