1 files changed, 33 insertions, 0 deletions
diff --git a/app/assets/javascripts/monitoring/utils.js b/app/assets/javascripts/monitoring/utils.js
new file mode 100644
index 00000000000..ef309c8a398
--- /dev/null
+++ b/app/assets/javascripts/monitoring/utils.js
@@ -0,0 +1,33 @@
+import { timeWindows } from './constants';
+
+/**
+ * method that converts a predetermined time window to minutes
+ * defaults to 8 hours as the default option
+ * @param {String} timeWindow - The time window to convert to minutes
+ * @returns {number} The time window in minutes
+ */
+const getTimeDifferenceSeconds = timeWindow => {
+  switch (timeWindow) {
+    case timeWindows.thirtyMinutes:
+      return 60 * 30;
+    case timeWindows.threeHours:
+      return 60 * 60 * 3;
+    case timeWindows.oneDay:
+      return 60 * 60 * 24 * 1;
+    case timeWindows.threeDays:
+      return 60 * 60 * 24 * 3;
+    case timeWindows.oneWeek:
+      return 60 * 60 * 24 * 7 * 1;
+    default:
+      return 60 * 60 * 8;
+  }
+};
+
+export const getTimeDiff = selectedTimeWindow => {
+  const end = Date.now() / 1000; // convert milliseconds to seconds
+  const start = end - getTimeDifferenceSeconds(selectedTimeWindow);
+
+  return { start, end };
+};
+
+export default {};