From 4cb11da4cf6e76cc5f0ac2fac31fc680ed732f2f Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Mon, 7 Nov 2016 21:46:15 -0800
Subject: [PATCH] walletdb: safe sync option.

---
 lib/wallet/wallet.js | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/lib/wallet/wallet.js b/lib/wallet/wallet.js
index 6439dddc..bae75cb2 100644
--- a/lib/wallet/wallet.js
+++ b/lib/wallet/wallet.js
@@ -1857,12 +1857,17 @@ Wallet.prototype._setLookahead = co(function* setLookahead(acct, lookahead) {
 Wallet.prototype.syncOutputDepth = co(function* syncOutputDepth(details) {
   var derived = [];
   var accounts = {};
-  var i, j, path, paths, account;
+  var i, j, path, paths, acct, account;
   var receive, change, nested, ring;
 
   if (!details)
     return derived;
 
+  if (this.db.options.safeSync) {
+    if (details.height === -1)
+      return;
+  }
+
   for (i = 0; i < details.outputs.length; i++) {
     path = details.outputs[i].path;
 
@@ -1882,7 +1887,7 @@ Wallet.prototype.syncOutputDepth = co(function* syncOutputDepth(details) {
 
   for (i = 0; i < accounts.length; i++) {
     paths = accounts[i];
-    account = paths[0].account;
+    acct = paths[0].account;
     receive = -1;
     change = -1;
     nested = -1;
@@ -1910,10 +1915,8 @@ Wallet.prototype.syncOutputDepth = co(function* syncOutputDepth(details) {
     change += 2;
     nested += 2;
 
-    account = yield this.getAccount(account);
-
-    if (!account)
-      continue;
+    account = yield this.getAccount(acct);
+    assert(account);
 
     ring = yield account.syncDepth(receive, change, nested);