From 19a79bd5379677bad1eeaf40d64b4387733d3329 Mon Sep 17 00:00:00 2001
From: Yak <y@kuhi.to>
Date: Mon, 23 Sep 2024 18:35:07 -0300
Subject: [PATCH] stuff

---
 index.d.ts    |  9 +++++++++
 src/lib.rs    | 25 +++++++++++++++++++++++++
 src/wallet.rs | 22 ++++++++++++++++++++++
 3 files changed, 56 insertions(+)

diff --git a/index.d.ts b/index.d.ts
index 7c9d311..75ec3f4 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -459,6 +459,15 @@ export declare class Peer {
    * @returns {Promise<SyncStoreResponse>} The sync store response.
    */
   syncStoreFromLauncherId(launcherId: Buffer, lastHeight: number | undefined | null, lastHeaderHash: Buffer, withHistory: boolean): Promise<SyncStoreResponse>
+  /**
+   * Fetch a store's creation height.
+   *
+   * @param {Buffer} launcherId - The store's launcher/singleton ID.
+   * @param {Option<u32>} lastHeight - Min. height to search records from. If null, sync will be done from the genesis block.
+   * @param {Buffer} lastHeaderHash - Header hash corresponding to `lastHeight`. If null, this should be the genesis challenge of the current chain.
+   * @returns {Promise<BigInt>} The store's creation height.
+   */
+  getStoreCreationHeight(launcherId: Buffer, lastHeight: number | undefined | null, lastHeaderHash: Buffer): Promise<bigint>
   /**
    * Broadcasts a spend bundle to the mempool.
    *
diff --git a/src/lib.rs b/src/lib.rs
index 0d3313b..883772d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -578,6 +578,31 @@ impl Peer {
         res.to_js()
     }
 
+    #[napi]
+    /// Fetch a store's creation height.
+    ///
+    /// @param {Buffer} launcherId - The store's launcher/singleton ID.
+    /// @param {Option<u32>} lastHeight - Min. height to search records from. If null, sync will be done from the genesis block.
+    /// @param {Buffer} lastHeaderHash - Header hash corresponding to `lastHeight`. If null, this should be the genesis challenge of the current chain.
+    /// @returns {Promise<BigInt>} The store's creation height.
+    pub async fn get_store_creation_height(
+        &self,
+        launcher_id: Buffer,
+        last_height: Option<u32>,
+        last_header_hash: Buffer,
+    ) -> napi::Result<BigInt> {
+        let res = wallet::get_store_creation_height(
+            &self.inner.clone(),
+            RustBytes32::from_js(launcher_id)?,
+            last_height,
+            RustBytes32::from_js(last_header_hash)?,
+        )
+        .await
+        .map_err(js::err)?;
+
+        (res as u64).to_js()
+    }
+
     #[napi]
     /// Broadcasts a spend bundle to the mempool.
     ///
diff --git a/src/wallet.rs b/src/wallet.rs
index 7d5651c..2854eb8 100644
--- a/src/wallet.rs
+++ b/src/wallet.rs
@@ -648,6 +648,28 @@ pub async fn sync_store_using_launcher_id(
     })
 }
 
+pub async fn get_store_creation_height(
+    peer: &Peer,
+    launcher_id: Bytes32,
+    last_height: Option<u32>,
+    last_header_hash: Bytes32,
+) -> Result<u32, WalletError> {
+    let response = peer
+        .request_coin_state(vec![launcher_id], last_height, last_header_hash, false)
+        .await
+        .map_err(WalletError::Client)?
+        .map_err(|_| WalletError::RejectCoinState)?;
+    let last_coin_record = response
+        .coin_states
+        .into_iter()
+        .next()
+        .ok_or(WalletError::UnknownCoin)?;
+
+    last_coin_record
+        .created_height
+        .ok_or(WalletError::UnknownCoin)
+}
+
 pub enum DataStoreInnerSpend {
     Owner(PublicKey),
     Admin(PublicKey),