Added new date utils

src/app/shared/date.util.ts

@@ -3,6 +3,8 @@ import { NgbDateStruct } from '@ng-bootstrap/ng-bootstrap';
 import { isObject } from 'lodash';
 import * as moment from 'moment';
 
+import { isEmpty } from './empty.util';
+
 /**
  * Returns true if the passed value is a NgbDateStruct.
  *
@@ -13,7 +15,7 @@ import * as moment from 'moment';
  */
 export function isNgbDateStruct(value: object): boolean {
   return isObject(value) && value.hasOwnProperty('day')
-    && value.hasOwnProperty('month')  && value.hasOwnProperty('year');
+    && value.hasOwnProperty('month') && value.hasOwnProperty('year');
 }
 
 /**
@@ -56,3 +58,35 @@ export function dateToISOFormat(date: Date | NgbDateStruct): string {
 export function ngbDateStructToDate(date: NgbDateStruct): Date {
   return new Date(date.year, (date.month - 1), date.day);
 }
+
+/**
+ * Returns a NgbDateStruct object started from a string representing a date
+ *
+ * @param date
+ *    The Date to convert
+ * @return NgbDateStruct
+ *    the NgbDateStruct object
+ */
+export function stringToNgbDateStruct(date: string): NgbDateStruct {
+  return dateToNgbDateStruct(new Date(date));
+}
+
+/**
+ * Returns a NgbDateStruct object started from a Date object
+ *
+ * @param date
+ *    The Date to convert
+ * @return NgbDateStruct
+ *    the NgbDateStruct object
+ */
+export function dateToNgbDateStruct(date?: Date): NgbDateStruct {
+  if (isEmpty(date)) {
+    date = new Date()
+  }
+
+  return {
+    year: date.getFullYear(),
+    month: date.getMonth() + 1,
+    day: date.getDate()
+  };
+}