global: private xpub support part 1

2026-07-24 01:18:10 -07:00 · 2026-06-16 23:37:03 +02:00
parent 6f430bdb8c
commit 0c7861071d
70 changed files with 5874 additions and 12510 deletions
@@ -0,0 +1,45 @@
+use brk_error::{Error, OptionData, Result};
+use brk_types::{Addr, AddrIndexTxIndex, Height, Txid, Unit};
+
+use crate::Query;
+
+impl Query {
+    /// Height of the last on-chain activity for an address (last tx_index to height).
+    /// With `before_txid`, returns the newest activity strictly older than that
+    /// cursor. Used by paginated chain etags so a new tx above the cursor
+    /// doesn't invalidate deeper pages.
+    pub fn addr_last_activity_height(
+        &self,
+        addr: &Addr,
+        before_txid: Option<&Txid>,
+    ) -> Result<Height> {
+        let (output_type, type_index) = self.resolve_addr(addr)?;
+        let store = self
+            .indexer()
+            .stores
+            .addr_type_to_addr_index_and_tx_index
+            .get(output_type)
+            .data()?;
+        let tx_index_len = self.safe_lengths().tx_index;
+        let last_tx_index = match before_txid {
+            Some(txid) => {
+                let before_tx_index = self.resolve_tx_index(txid)?;
+                let min = AddrIndexTxIndex::min_for_addr(type_index);
+                let cursor = AddrIndexTxIndex::from((type_index, before_tx_index));
+                store
+                    .range(min..cursor)
+                    .rev()
+                    .map(|(key, _): (AddrIndexTxIndex, Unit)| key.tx_index())
+                    .find(|tx_index| *tx_index < tx_index_len)
+                    .ok_or(Error::UnknownAddr)?
+            }
+            None => store
+                .prefix(type_index)
+                .rev()
+                .map(|(key, _): (AddrIndexTxIndex, Unit)| key.tx_index())
+                .find(|tx_index| *tx_index < tx_index_len)
+                .ok_or(Error::UnknownAddr)?,
+        };
+        self.confirmed_status_height(last_tx_index)
+    }
+}