Move eta function to shared format utility

shared/util/formatUtil.js

@@ -1,7 +1,33 @@
 'use strict';
 let moment = require('moment');
 
-const FORMAT_UTIL = {
+const formatUtil = {
+  secondsToDuration: cumSeconds => {
+    const years = Math.floor(cumSeconds / 31536000);
+    const weeks = Math.floor((cumSeconds % 31536000) / 604800);
+    const days = Math.floor(((cumSeconds % 31536000) % 604800) / 86400);
+    const hours = Math.floor((((cumSeconds % 31536000) % 604800) % 86400) / 3600);
+    const minutes = Math.floor(((((cumSeconds % 31536000) % 604800) % 86400) % 3600) / 60);
+    const seconds = Math.floor(cumSeconds - (minutes * 60));
+    let timeRemaining = null;
+
+    if (years > 0) {
+      timeRemaining = {years, weeks, cumSeconds};
+    } else if (weeks > 0) {
+      timeRemaining = {weeks, days, cumSeconds};
+    } else if (days > 0) {
+      timeRemaining = {days, hours, cumSeconds};
+    } else if (hours > 0) {
+      timeRemaining = {hours, minutes, cumSeconds};
+    } else if (minutes > 0) {
+      timeRemaining = {minutes, seconds, cumSeconds};
+    } else {
+      timeRemaining = {seconds, cumSeconds};
+    }
+
+    return timeRemaining;
+  },
+
   minToHumanReadable: min => {
     return moment.duration(min * 60 * 1000).humanize();
   },
@@ -45,4 +71,4 @@ const FORMAT_UTIL = {
   }
 }
 
-module.exports = FORMAT_UTIL;
+module.exports = formatUtil;