fix chain.index.lastTs.

lib/bcoin/chain.js

@@ -56,7 +56,7 @@ function Chain(options) {
   this.fromJSON(preload);
 
   // Last TS after preload, needed for fill percent
-  this.index.lastTs = this.index.ts[this.index.ts.length - 1];
+  this.index.lastTs = this.index.ts[0];
 
   bcoin.chain.global = this;
 
@@ -212,7 +212,6 @@ Chain.prototype.resetHeight = function resetHeight(height) {
   this.index.hashes.forEach(function(hash) {
     self.index.bloom.add(hash, 'hex');
   });
-  this.index.lastTs = this.index.ts[this.index.ts.length - 1];
 };
 
 Chain.prototype._heightByTime = function _heightByTime(ts) {

lib/bcoin/fullchain.js

@@ -64,7 +64,7 @@ function Chain(options) {
   });
 
   // Last TS after preload, needed for fill percent
-  this.index.lastTs = this.index.entries[this.index.entries.length - 1].ts;
+  this.index.lastTs = this.index.entries[0].ts;
 
   bcoin.chain.global = this;
 
@@ -157,7 +157,7 @@ Chain.prototype.resetHeight = function resetHeight(height) {
   }, {});
   this.index.hashes.length = height + 1;
 
-  this.index.lastTs = this.index.entries[this.index.entries.length - 1].ts;
+  this.index.lastTs = this.index.entries[0].ts;
 
   forked.forEach(function(entry) {
     self._delete(entry);
@@ -348,7 +348,7 @@ Chain.prototype.isFull = function isFull() {
 
 Chain.prototype.fillPercent = function fillPercent() {
   var total = (+new Date() / 1000 - 40 * 60) - this.index.lastTs;
-  var current = this.index.entries[this.index.entries.length - 1].ts - this.index.lastTs;
+  var current = this.getTip().ts - this.index.lastTs;
   return Math.max(0, Math.min(current / total, 1));
 };