Start adding trading back to Trader

lib/trader.js

@@ -16,6 +16,8 @@ var Trader = module.exports = function (db) {
   this.logger = new (winston.Logger)({
     transports: [new (winston.transports.Console)()]
   });
+
+  this._tradeQueue = [];
 };
 
 Trader.prototype._findExchange = function (name) {
@@ -149,6 +151,18 @@ Trader.prototype.sendBitcoins = function (deviceFingerprint, tx, cb) {
   });
 };
 
+Trader.prototype.trade = function (fiat, satoshis, currency, callback) {
+  this._tradeQueue.push({fiat: fiat, satoshis: satoshis, currency: currency});
+  callback(null);
+};
+
+Trader.prototype.tradeQueueFiatBalance = function (exchangeRate) {
+  var satoshis = this._tradeQueue.reduce(function (memo, rec) {
+    return memo + rec.satoshis;
+  }, 0);
+  return (satoshis / SATOSHI_FACTOR) * exchangeRate;
+};
+
 Trader.prototype.startPolling = function () {
   this.pollBalance();
   this.pollRate();