add better way to compute total supply

app.js

@@ -18,7 +18,7 @@ var app = express();
 bitcoinapi.setWalletDetails(settings.wallet);
 if (settings.heavy != true) {
   bitcoinapi.setAccess('only', ['getinfo', 'getnetworkhashps', 'getmininginfo','getdifficulty', 'getconnectioncount',
-    'getblockcount', 'getblockhash', 'getblock', 'getrawtransaction', 'getpeerinfo']);
+    'getblockcount', 'getblockhash', 'getblock', 'getrawtransaction', 'getpeerinfo', 'gettxoutsetinfo']);
 } else {
   // enable additional heavy api calls
   /*
@@ -35,7 +35,7 @@ if (settings.heavy != true) {
   bitcoinapi.setAccess('only', ['getinfo', 'getstakinginfo', 'getnetworkhashps', 'getdifficulty', 'getconnectioncount',
     'getblockcount', 'getblockhash', 'getblock', 'getrawtransaction','getmaxmoney', 'getvote',
     'getmaxvote', 'getphase', 'getreward', 'getnextrewardestimate', 'getnextrewardwhenstr',
-    'getnextrewardwhensec', 'getsupply']);
+    'getnextrewardwhensec', 'getsupply', 'gettxoutsetinfo']);
 }
 // view engine setup
 app.set('views', path.join(__dirname, 'views'));

lib/explorer.js

@@ -234,6 +234,11 @@ module.exports = {
       module.exports.balance_supply(function(supply) {
         return cb(supply/100000000);
       });
+    } else if (settings.supply == 'TXOUTSET') {
+      var uri = base_url + 'gettxoutsetinfo';
+      request({uri: uri, json: true}, function (error, response, body) {
+        return cb(body.total_amount);
+      });
     } else {
       coinbase_supply(function(supply) {
         return cb(supply/100000000);

settings.json.template

@@ -137,6 +137,7 @@
   // GETINFO : retreive from getinfo api call (PoS)
   // HEAVY: retreive from heavys getsupply api call
   // BALANCES : total of all address balances
+  // TXOUTSET : retreive from gettxoutsetinfo api call
   "supply": "COINBASE",
 
   // how to acquire network hashrate