feat(SW-864): add to calendar functionality

components/HotelReservation/BookingConfirmation/Header/Actions/AddToCalendar.tsx

@@ -0,0 +1,61 @@
+"use client"
+import { createEvent } from "ics"
+import { useIntl } from "react-intl"
+
+import { dt } from "@/lib/dt"
+
+import { CalendarAddIcon } from "@/components/Icons"
+import Button from "@/components/TempDesignSystem/Button"
+import useLang from "@/hooks/useLang"
+
+import type { AddToCalendarProps } from "@/types/components/hotelReservation/bookingConfirmation/actions/addToCalendar"
+
+export default function AddToCalendar({
+  checkInDate,
+  event,
+  hotelName,
+}: AddToCalendarProps) {
+  const intl = useIntl()
+  const lang = useLang()
+
+  async function downloadBooking() {
+    const d = dt(checkInDate).locale(lang).format("YYYY-MM-DD")
+    const filename = `${hotelName.toLowerCase().split(" ").join("_")}-${d}.ics`
+
+    const file: Blob = await new Promise((resolve, reject) => {
+      createEvent(event, (error, value) => {
+        if (error) {
+          reject(error)
+        }
+
+        resolve(new File([value], filename, { type: "text/calendar" }))
+      })
+    })
+
+    const url = URL.createObjectURL(file)
+
+    const anchor = document.createElement("a")
+    anchor.href = url
+    anchor.download = filename
+
+    document.body.appendChild(anchor)
+    anchor.click()
+    document.body.removeChild(anchor)
+
+    URL.revokeObjectURL(url)
+  }
+
+  return (
+    <Button
+      intent="text"
+      onPress={downloadBooking}
+      size="small"
+      theme="base"
+      variant="icon"
+      wrapping
+    >
+      <CalendarAddIcon />
+      {intl.formatMessage({ id: "Add to calendar" })}
+    </Button>
+  )
+}