From 695305cf68b422168d992dae47602bf1028b2023 Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Wed, 8 Mar 2017 07:40:36 -0800
Subject: [PATCH] mtx: add by-value sorting.

---
 lib/primitives/mtx.js | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/primitives/mtx.js b/lib/primitives/mtx.js
index 6a0a9a26..7928d779 100644
--- a/lib/primitives/mtx.js
+++ b/lib/primitives/mtx.js
@@ -1448,7 +1448,7 @@ function CoinSelector(tx, options) {
   this.change = 0;
   this.fee = CoinSelector.MIN_FEE;
 
-  this.selection = 'age';
+  this.selection = 'value';
   this.shouldSubtract = false;
   this.subtractFee = null;
   this.height = -1;
@@ -1600,6 +1600,9 @@ CoinSelector.prototype.init = function init(coins) {
     case 'age':
       this.coins.sort(sortAge);
       break;
+    case 'value':
+      this.coins.sort(sortValue);
+      break;
     default:
       throw new FundingError('Bad selection type: ' + this.selection);
   }
@@ -1839,6 +1842,14 @@ function sortRandom(a, b) {
   return Math.random() > 0.5 ? 1 : -1;
 }
 
+function sortValue(a, b) {
+  if (a.height === -1 && b.height !== -1)
+    return 1;
+  if (a.height !== -1 && b.height === -1)
+    return -1;
+  return b.value - a.value;
+}
+
 function sortInputs(a, b) {
   var ahash = a.prevout.txid();
   var bhash = b.prevout.txid();