From dded017126d5d37b4c1a7f6b90d790ae9faf53da Mon Sep 17 00:00:00 2001
From: Nodari Chkuaselidze <nodar.chkuaselidze@gmail.com>
Date: Wed, 21 May 2025 13:15:57 +0400
Subject: [PATCH] wallet-coinselector: skip non-existent coins.

---
 lib/wallet/layout.js |  4 ++--
 lib/wallet/wallet.js | 12 ++++++++----
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/lib/wallet/layout.js b/lib/wallet/layout.js
index 6341b1dc..5fc921b7 100644
--- a/lib/wallet/layout.js
+++ b/lib/wallet/layout.js
@@ -120,8 +120,8 @@ exports.wdb = {
  *
  *   Coin Selection
  *   --------------
- *   Sc[value][tx-hash][index] -> dummy (Confirmed coins by value)
- *   SC[account][value][tx-hash][index] -> dummy
+ *   Sv[value][tx-hash][index] -> dummy (Confirmed coins by value)
+ *   Sv[account][value][tx-hash][index] -> dummy
  *      (Confirmed coins by account + value)
  *
  *   Su[value][tx-hash][index] -> dummy (Unconfirmed coins by value)
diff --git a/lib/wallet/wallet.js b/lib/wallet/wallet.js
index 8bc0f2ef..fee4712e 100644
--- a/lib/wallet/wallet.js
+++ b/lib/wallet/wallet.js
@@ -13,7 +13,8 @@ const base58 = require('bcrypto/lib/encoding/base58');
 const bio = require('bufio');
 const blake2b = require('bcrypto/lib/blake2b');
 const cleanse = require('bcrypto/lib/cleanse');
-const {BufferSet} = require('buffer-map');
+const bufmap = require('buffer-map');
+const BufferSet = bufmap.BufferSet;
 const TXDB = require('./txdb');
 const Path = require('./path');
 const common = require('./common');
@@ -48,7 +49,6 @@ const {
 
 /** @typedef {import('bdb').DB} DB */
 /** @typedef {ReturnType<DB['batch']>} Batch */
-/** @typedef {import('buffer-map').BufferMap} BufferMap */
 /** @typedef {import('../types').Base58String} Base58String */
 /** @typedef {import('../types').Hash} Hash */
 /** @typedef {import('../types').Amount} Amount */
@@ -1278,7 +1278,7 @@ class Wallet extends EventEmitter {
    */
 
   async select(mtx, options) {
-    const selection = options.selection || 'dbvalue';
+    const selection = options.selection || 'value';
 
     switch (selection) {
       case 'all':
@@ -5754,7 +5754,7 @@ class WalletCoinSource extends AbstractCoinSource {
 
   /**
    * Resolve coins.
-   * @param {BufferMap<Number>} inputs
+   * @param {bufmap.BufferMap<Number>} inputs
    * @param {Coin[]} coins - Coin per input.
    * @returns {Promise<void>}
    */
@@ -5778,6 +5778,10 @@ class WalletCoinSource extends AbstractCoinSource {
       }
 
       const coin = await this.txdb.getCoin(outpoint.hash, outpoint.index);
+
+      if (!coin)
+        continue;
+
       coins[idx] = coin;
       inputs.delete(key);
     }