From 0b37cb66342417416fb51c890d88361732470008 Mon Sep 17 00:00:00 2001
From: Rostyslav Tyshko <tyshko.rostyslav@gmail.com>
Date: Wed, 9 Apr 2025 01:36:44 -0400
Subject: [PATCH] split_utxo add commitments

---
 node_core/src/lib.rs | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/node_core/src/lib.rs b/node_core/src/lib.rs
index 06737a9..cdad2cf 100644
--- a/node_core/src/lib.rs
+++ b/node_core/src/lib.rs
@@ -1262,11 +1262,11 @@ impl NodeCore {
     ) -> Result<(Transaction, Vec<(AccountAddress, [u8; 32])>), ExecutionFailureKind> {
         let acc_map_read_guard = self.storage.read().await;
 
-        let accout = acc_map_read_guard.acc_map.get(&utxo.owner).unwrap();
+        let account = acc_map_read_guard.acc_map.get(&utxo.owner).unwrap();
 
         let nullifier = generate_nullifiers(
             &utxo,
-            &accout
+            &account
                 .key_holder
                 .utxo_secret_key_holder
                 .nullifier_secret_key
@@ -1285,7 +1285,7 @@ impl NodeCore {
             .map(|(utxo, _)| utxo.clone())
             .collect();
 
-        let ephm_key_holder = &accout.produce_ephemeral_key_holder();
+        let ephm_key_holder = &account.produce_ephemeral_key_holder();
         ephm_key_holder.log();
 
         let eph_pub_key =
@@ -1324,6 +1324,27 @@ impl NodeCore {
                 .collect(),
         });
 
+        // TODO: fix address when correspoding method will be added
+        let sc_addr = "";
+        let mut rng = rand::thread_rng();
+        let secret_r: [u8; 32] = rng.gen();
+
+        let sc_state = acc_map_read_guard.block_store.get_sc_sc_state(sc_addr).map_err(ExecutionFailureKind::db_error)?;
+
+        let mut vec_values_u64: Vec<Vec<u64>> =  sc_state.into_iter().map(|slice| Self::vec_u8_to_vec_u64(slice.to_vec())).collect();
+
+        let context = acc_map_read_guard.produce_context(account.address);
+
+        let serialized_context = serde_json::to_vec(&context).unwrap();
+
+        let serialized_context_u64 = Self::vec_u8_to_vec_u64(serialized_context);
+
+        vec_values_u64.push(serialized_context_u64);
+
+        let vec_public_info: Vec<u64> = vec_values_u64.into_iter().flatten().collect();
+
+        let (tweak, secret_r, commitment) = new_commitment_vec(vec_public_info, &secret_r);
+
         Ok((
             TransactionPayload {
                 tx_kind: TxKind::Shielded,
@@ -1342,6 +1363,9 @@ impl NodeCore {
                 .unwrap(),
                 encoded_data,
                 ephemeral_pub_key: eph_pub_key.to_vec(),
+                commitment,
+                tweak,
+                secret_r: secret_r.try_into().unwrap(),
             }
             .into(),
             utxo_hashes,