add utility for date

src/Bundle/ChillMainBundle/Resources/public/js/date.js

@@ -0,0 +1,64 @@
+/**
+ * Some utils for manipulating dates
+ */
+
+/**
+ * Return the date to local ISO date, like YYYY-mm-dd
+ *
+ * The date is valid for the same timezone as the date's locale
+ *
+ * Do not take time into account
+ */
+const dateToISO = (date) => {
+  return [
+    this.$store.state.startDate.getFullYear(),
+    (this.$store.state.startDate.getMonth() + 1).toString().padStart(2, '0'),
+    this.$store.state.startDate.getDate().toString().padStart(2, '0')
+  ].join('-');
+};
+
+/**
+ * Return a date object from iso string formatted as YYYY-mm-dd
+ */
+const ISOToDate = (str) => {
+  let 
+    [year, month, day] = str.split('-');
+      
+  return new Date(year, month-1, day);
+}
+
+/**
+ * Convert a date to ISO8601, valid for usage in api
+ */
+const datetimeToISO = (date) => {
+  let cal, time, offset;
+  cal = [
+    date.getFullYear(),
+    (date.getMonth() + 1).toString().padStart(2, '0'),
+    date.getDate().toString().padStart(2, '0')
+  ].join('-');
+  
+  time = [
+    date.getHours().toString().padStart(2, '0'),
+    date.getMinutes().toString().padStart(2, '0'),
+    date.getSeconds().toString().padStart(2, '0')
+  ].join(':');
+
+  offset = [
+    date.getTimezoneOffset() <= 0 ? '+' : '-',
+    Math.abs(Math.floor(date.getTimezoneOffset() / 60)).toString().padStart(2, '0'),
+    ':',
+    Math.abs(date.getTimezoneOffset() % 60).toString().padStart(2, '0'),
+  ].join('');
+  
+  let x = cal + 'T' + time + offset;
+  console.log('return date', x);
+
+  return x;
+};
+
+export {
+  dateToISO,
+  ISOToDate,
+  datetimeToISO
+};