first commit

calcom/packages/features/ee/workflows/lib/getiCalEventAsString.ts

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+import { createEvent } from "ics";
+import type { DateArray } from "ics";
+import { RRule } from "rrule";
+import { v4 as uuidv4 } from "uuid";
+
+import dayjs from "@calcom/dayjs";
+import { parseRecurringEvent } from "@calcom/lib";
+import type { Prisma, User } from "@calcom/prisma/client";
+
+type Booking = Prisma.BookingGetPayload<{
+  include: {
+    eventType: true;
+    attendees: true;
+  };
+}>;
+
+export function getiCalEventAsString(
+  booking: Pick<Booking, "startTime" | "endTime" | "description" | "location" | "attendees"> & {
+    eventType: { recurringEvent?: Prisma.JsonValue; title?: string } | null;
+    user: Partial<User> | null;
+  }
+) {
+  let recurrenceRule: string | undefined = undefined;
+  const recurringEvent = parseRecurringEvent(booking.eventType?.recurringEvent);
+  if (recurringEvent?.count) {
+    recurrenceRule = new RRule(recurringEvent).toString().replace("RRULE:", "");
+  }
+
+  const uid = uuidv4();
+
+  const icsEvent = createEvent({
+    uid,
+    startInputType: "utc",
+    start: dayjs(booking.startTime.toISOString() || "")
+      .utc()
+      .toArray()
+      .slice(0, 6)
+      .map((v, i) => (i === 1 ? v + 1 : v)) as DateArray,
+    duration: {
+      minutes: dayjs(booking.endTime.toISOString() || "").diff(
+        dayjs(booking.startTime.toISOString() || ""),
+        "minute"
+      ),
+    },
+    title: booking.eventType?.title || "",
+    description: booking.description || "",
+    location: booking.location || "",
+    organizer: {
+      email: booking.user?.email || "",
+      name: booking.user?.name || "",
+    },
+    attendees: [
+      {
+        name: booking.attendees[0].name,
+        email: booking.attendees[0].email,
+        partstat: "ACCEPTED",
+        role: "REQ-PARTICIPANT",
+        rsvp: true,
+      },
+    ],
+    method: "REQUEST",
+    ...{ recurrenceRule },
+    status: "CONFIRMED",
+  });
+
+  if (icsEvent.error) {
+    throw icsEvent.error;
+  }
+
+  return icsEvent.value;
+}