fix(electrum)!: Remove seen_at param from into_tx_graph

and `into_confirmation_time_tx_graph`, since now it makes
sense to use `TxGraph::update_last_seen_unconfirmed`.

Also, use `update_last_seen_unconfirmed` in examples for
electrum/esplora. We show how to update the last seen
time for transactions by calling `update_last_seen_unconfirmed`
on the graph update returned from a blockchain source, passing
in the current time, before applying it to another `TxGraph`.

crates/electrum/src/electrum_ext.rs

@@ -40,15 +40,11 @@ impl RelevantTxids {
     pub fn into_tx_graph(
         self,
         client: &Client,
-        seen_at: Option<u64>,
         missing: Vec<Txid>,
     ) -> Result<TxGraph<ConfirmationHeightAnchor>, Error> {
         let new_txs = client.batch_transaction_get(&missing)?;
         let mut graph = TxGraph::<ConfirmationHeightAnchor>::new(new_txs);
         for (txid, anchors) in self.0 {
-            if let Some(seen_at) = seen_at {
-                let _ = graph.insert_seen_at(txid, seen_at);
-            }
             for anchor in anchors {
                 let _ = graph.insert_anchor(txid, anchor);
             }
@@ -67,10 +63,9 @@ impl RelevantTxids {
     pub fn into_confirmation_time_tx_graph(
         self,
         client: &Client,
-        seen_at: Option<u64>,
         missing: Vec<Txid>,
     ) -> Result<TxGraph<ConfirmationTimeHeightAnchor>, Error> {
-        let graph = self.into_tx_graph(client, seen_at, missing)?;
+        let graph = self.into_tx_graph(client, missing)?;
 
         let relevant_heights = {
             let mut visited_heights = HashSet::new();

crates/electrum/tests/test_electrum.rs

@@ -68,7 +68,7 @@ fn scan_detects_confirmed_tx() -> Result<()> {
     } = client.sync(recv_chain.tip(), [spk_to_track], None, None, 5)?;
 
     let missing = relevant_txids.missing_full_txs(recv_graph.graph());
-    let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, None, missing)?;
+    let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, missing)?;
     let _ = recv_chain
         .apply_update(chain_update)
         .map_err(|err| anyhow::anyhow!("LocalChain update error: {:?}", err))?;
@@ -134,7 +134,7 @@ fn tx_can_become_unconfirmed_after_reorg() -> Result<()> {
     } = client.sync(recv_chain.tip(), [spk_to_track.clone()], None, None, 5)?;
 
     let missing = relevant_txids.missing_full_txs(recv_graph.graph());
-    let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, None, missing)?;
+    let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, missing)?;
     let _ = recv_chain
         .apply_update(chain_update)
         .map_err(|err| anyhow::anyhow!("LocalChain update error: {:?}", err))?;
@@ -164,8 +164,7 @@ fn tx_can_become_unconfirmed_after_reorg() -> Result<()> {
         } = client.sync(recv_chain.tip(), [spk_to_track.clone()], None, None, 5)?;
 
         let missing = relevant_txids.missing_full_txs(recv_graph.graph());
-        let graph_update =
-            relevant_txids.into_confirmation_time_tx_graph(&client, None, missing)?;
+        let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, missing)?;
         let _ = recv_chain
             .apply_update(chain_update)
             .map_err(|err| anyhow::anyhow!("LocalChain update error: {:?}", err))?;

example-crates/example_electrum/src/main.rs

@@ -299,12 +299,12 @@ fn main() -> anyhow::Result<()> {
         relevant_txids.missing_full_txs(graph.graph())
     };
 
+    let mut graph_update = relevant_txids.into_tx_graph(&client, missing_txids)?;
     let now = std::time::UNIX_EPOCH
         .elapsed()
         .expect("must get time")
         .as_secs();
-
-    let graph_update = relevant_txids.into_tx_graph(&client, Some(now), missing_txids)?;
+    let _ = graph_update.update_last_seen_unconfirmed(now);
 
     let db_changeset = {
         let mut chain = chain.lock().unwrap();

example-crates/example_esplora/src/main.rs

@@ -189,10 +189,14 @@ fn main() -> anyhow::Result<()> {
             // is reached. It returns a `TxGraph` update (`graph_update`) and a structure that
             // represents the last active spk derivation indices of keychains
             // (`keychain_indices_update`).
-            let (graph_update, last_active_indices) = client
+            let (mut graph_update, last_active_indices) = client
                 .full_scan(keychain_spks, *stop_gap, scan_options.parallel_requests)
                 .context("scanning for transactions")?;
 
+            // We want to keep track of the latest time a transaction was seen unconfirmed.
+            let now = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs();
+            let _ = graph_update.update_last_seen_unconfirmed(now);
+
             let mut graph = graph.lock().expect("mutex must not be poisoned");
             // Because we did a stop gap based scan we are likely to have some updates to our
             // deriviation indices. Usually before a scan you are on a fresh wallet with no
@@ -307,9 +311,13 @@ fn main() -> anyhow::Result<()> {
                 }
             }
 
-            let graph_update =
+            let mut graph_update =
                 client.sync(spks, txids, outpoints, scan_options.parallel_requests)?;
 
+            // Update last seen unconfirmed
+            let now = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs();
+            let _ = graph_update.update_last_seen_unconfirmed(now);
+
             graph.lock().unwrap().apply_update(graph_update)
         }
     };

example-crates/wallet_electrum/src/main.rs

@@ -66,7 +66,9 @@ fn main() -> Result<(), anyhow::Error> {
     println!();
 
     let missing = relevant_txids.missing_full_txs(wallet.as_ref());
-    let graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, None, missing)?;
+    let mut graph_update = relevant_txids.into_confirmation_time_tx_graph(&client, missing)?;
+    let now = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs();
+    let _ = graph_update.update_last_seen_unconfirmed(now);
 
     let wallet_update = Update {
         last_active_indices: keychain_update,

example-crates/wallet_esplora_async/src/main.rs

@@ -53,9 +53,12 @@ async fn main() -> Result<(), anyhow::Error> {
             (k, k_spks)
         })
         .collect();
-    let (update_graph, last_active_indices) = client
+    let (mut update_graph, last_active_indices) = client
         .full_scan(keychain_spks, STOP_GAP, PARALLEL_REQUESTS)
         .await?;
+
+    let now = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs();
+    let _ = update_graph.update_last_seen_unconfirmed(now);
     let missing_heights = update_graph.missing_heights(wallet.local_chain());
     let chain_update = client.update_local_chain(prev_tip, missing_heights).await?;
     let update = Update {

example-crates/wallet_esplora_blocking/src/main.rs

@@ -53,8 +53,11 @@ fn main() -> Result<(), anyhow::Error> {
         })
         .collect();
 
-    let (update_graph, last_active_indices) =
+    let (mut update_graph, last_active_indices) =
         client.full_scan(keychain_spks, STOP_GAP, PARALLEL_REQUESTS)?;
+
+    let now = std::time::UNIX_EPOCH.elapsed().unwrap().as_secs();
+    let _ = update_graph.update_last_seen_unconfirmed(now);
     let missing_heights = update_graph.missing_heights(wallet.local_chain());
     let chain_update = client.update_local_chain(prev_tip, missing_heights)?;
     let update = Update {