feat: adding param scripts helpers

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "sidan-csl-rs"
-version = "0.1.4"
+version = "0.1.5"
 edition = "2021"
 license = "MIT"
 description = "Wrapper around the cardano-serialization-lib for easier transaction building, heavily inspired by cardano-cli APIs"

src/utils/aiken.rs

@@ -1,14 +1,74 @@
 use cardano_serialization_lib::{
     error::JsError,
-    plutus::{PlutusList, PlutusScript},
+    plutus::{PlutusData, PlutusDatumSchema, PlutusList, PlutusScript},
 };
+use std::error::Error;
 
 #[cfg(not(all(target_arch = "wasm32", not(target_os = "emscripten"))))]
 use noop_proc_macro::wasm_bindgen;
 
 #[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))]
 use wasm_bindgen::prelude::{wasm_bindgen, JsValue};
 
+use super::parser::{bytes_to_hex, hex_to_bytes};
+
+pub fn apply_double_cbor_encoding(script: &str) -> Result<String, Box<dyn Error>> {
+    let bytes: Vec<u8> = hex_to_bytes(script).unwrap();
+
+    match PlutusScript::from_bytes(bytes.clone()) {
+        Ok(single_encoded_script) => {
+            match PlutusScript::from_bytes(single_encoded_script.bytes()) {
+                Ok(_) => Ok(script.to_string()),
+                Err(_) => {
+                    let bytes = PlutusScript::new(bytes).to_bytes();
+                    let new_script = bytes_to_hex(&bytes);
+                    Ok(new_script)
+                }
+            }
+        }
+        Err(err) => Err(Box::new(err)),
+    }
+}
+
+#[test]
+fn test_apply_double_cbor_encoding() {
+    let script =
+        "584501000032323232323222533300432323253330073370e900018041baa0011324a2600c0022c60120026012002600600229309b2b118021baa0015734aae7555cf2ba157441";
+    assert_eq!(
+        apply_double_cbor_encoding(script).unwrap(),
+        "5847584501000032323232323222533300432323253330073370e900018041baa0011324a2600c0022c60120026012002600600229309b2b118021baa0015734aae7555cf2ba157441"
+    );
+}
+
+#[wasm_bindgen]
+pub fn apply_params_to_script(
+    params_to_apply: Vec<String>,
+    plutus_script: String,
+) -> Result<String, Box<dyn std::error::Error>> {
+    let double_encoded_script = apply_double_cbor_encoding(&plutus_script).unwrap();
+    let plutus_script =
+        PlutusScript::from_bytes(hex_to_bytes(&double_encoded_script).unwrap()).unwrap();
+    let mut plutus_list = PlutusList::new();
+    for param in &params_to_apply {
+        let plutus_data = PlutusData::from_json(param, PlutusDatumSchema::DetailedSchema).unwrap();
+        plutus_list.add(&plutus_data);
+    }
+    let bytes = apply_params_to_plutus_script(&plutus_list, plutus_script)?.to_bytes();
+    Ok(bytes_to_hex(&bytes))
+}
+
+#[test]
+fn test_apply_params_to_script() {
+    use serde_json::{json, to_string};
+    let script =
+        "584501000032323232323222533300432323253330073370e900018041baa0011324a2600c0022c60120026012002600600229309b2b118021baa0015734aae7555cf2ba157441";
+    let params = vec![to_string(&json!({ "bytes": "1234"})).unwrap()];
+    assert_eq!(
+        apply_params_to_script(params, script.to_string()).unwrap(),
+        "584f584d010000332323232323222533300432323253330073370e900018041baa0011324a2600c0022c60120026012002600600229309b2b118021baa0015734aae7555cf2ba157449801034212340001"
+    );
+}
+
 #[wasm_bindgen]
 pub fn apply_params_to_plutus_script(
     params: &PlutusList,