101 lines
2.8 KiB
TypeScript
101 lines
2.8 KiB
TypeScript
import ICAL from "ical.js";
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import type { CalendarEvent } from "@/lib/types";
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export function parseICS(icsString: string): CalendarEvent[] {
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const jcalData = ICAL.parse(icsString);
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const comp = new ICAL.Component(jcalData);
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const vevents = comp.getAllSubcomponents("vevent");
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return vevents.map((v) => {
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const ev = new ICAL.Event(v);
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const isAllDay = ev.startDate.isDate;
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return {
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id: ev.uid || crypto.randomUUID(),
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title: ev.summary || "Untitled Event",
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description: ev.description || "",
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location: ev.location || "",
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url: v.getFirstPropertyValue("url") || undefined,
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start: ev.startDate.toJSDate().toISOString(),
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end: ev.endDate ? ev.endDate.toJSDate().toISOString() : undefined,
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allDay: isAllDay,
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createdAt: v.getFirstPropertyValue("dtstamp")
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? (v.getFirstPropertyValue("dtstamp") as ICAL.Time)
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.toJSDate()
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.toISOString()
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: undefined,
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lastModified: v.getFirstPropertyValue("last-modified")
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? (v.getFirstPropertyValue("last-modified") as ICAL.Time)
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.toJSDate()
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.toISOString()
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: undefined,
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recurrenceRule: v.getFirstPropertyValue("rrule")
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? (v.getFirstPropertyValue("rrule") as ICAL.Recur).toString()
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: undefined,
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};
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});
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}
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export function generateICS(events: CalendarEvent[]): string {
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const comp = new ICAL.Component(["vcalendar", [], []]);
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comp.addPropertyWithValue("version", "2.0");
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comp.addPropertyWithValue("prodid", "-//iCalPWA//EN");
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events.forEach((ev) => {
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const vevent = new ICAL.Component("vevent");
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vevent.addPropertyWithValue("uid", ev.id);
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vevent.addPropertyWithValue("summary", ev.title);
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if (ev.description)
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vevent.addPropertyWithValue("description", ev.description);
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if (ev.location) vevent.addPropertyWithValue("location", ev.location);
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if (ev.url) vevent.addPropertyWithValue("url", ev.url);
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// Start/End
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if (ev.allDay) {
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vevent.addPropertyWithValue(
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"dtstart",
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ICAL.Time.fromDateString(ev.start.split("T")[0]),
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);
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if (ev.end)
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vevent.addPropertyWithValue(
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"dtend",
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ICAL.Time.fromDateString(ev.end.split("T")[0]),
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);
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} else {
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vevent.addPropertyWithValue(
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"dtstart",
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ICAL.Time.fromJSDate(new Date(ev.start)),
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);
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if (ev.end)
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vevent.addPropertyWithValue(
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"dtend",
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ICAL.Time.fromJSDate(new Date(ev.end)),
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);
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}
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// Timestamps
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vevent.addPropertyWithValue(
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"dtstamp",
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ICAL.Time.fromJSDate(ev.createdAt ? new Date(ev.createdAt) : new Date()),
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);
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if (ev.lastModified) {
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vevent.addPropertyWithValue(
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"last-modified",
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ICAL.Time.fromJSDate(new Date(ev.lastModified)),
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);
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}
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// Recurrence
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if (ev.recurrenceRule) {
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vevent.addPropertyWithValue(
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"rrule",
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ICAL.Recur.fromString(ev.recurrenceRule),
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);
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}
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comp.addSubcomponent(vevent);
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});
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return comp.toString();
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}
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