Move ripple-rest/api into src/api, exposing RippleAPI

src/api/common/utils.js

@@ -0,0 +1,27 @@
+'use strict';
+const BigNumber = require('bignumber.js');
+
+function dropsToXrp(drops) {
+  return (new BigNumber(drops)).dividedBy(1000000.0).toString();
+}
+
+function xrpToDrops(xrp) {
+  return (new BigNumber(xrp)).times(1000000.0).floor().toString();
+}
+
+function convertAmount(amount) {
+  if (amount.currency === 'XRP') {
+    return xrpToDrops(amount.value);
+  }
+  return {
+    currency: amount.currency,
+    issuer: amount.counterparty ? amount.counterparty : amount.issuer,
+    value: amount.value
+  };
+}
+
+module.exports = {
+  dropsToXrp: dropsToXrp,
+  xrpToDrops: xrpToDrops,
+  convertAmount: convertAmount
+};