timtinkers.online
this repo has no description
Get calendar-level timezone fix
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+20
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utils/calendarUtils.ts
+20
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utils/calendarUtils.ts
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import parseISO from "https://deno.land/x/date_fns@v2.22.1/parseISO/index.js";
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import startOfDay from "https://deno.land/x/date_fns@v2.22.1/startOfDay/index.ts";
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import endOfDay from "https://deno.land/x/date_fns@v2.22.1/endOfDay/index.ts";
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import { fromZonedTime } from "npm:date-fns-tz";
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export interface Event {
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start: Date;
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}
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const icsData = await response.text();
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// Extract calendar-level timezone if present
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let calendarTimezone: string | null = null;
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const tzMatch = icsData.match(/X-WR-TIMEZONE:(.*?)(?:\r?\n)/);
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if (tzMatch && tzMatch[1]) {
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calendarTimezone = tzMatch[1].trim();
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}
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const events = ical.parseICS(icsData);
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const parsedEvents = parseICalEvents(events).sort((a, b) =>
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a.start.getTime() - b.start.getTime()
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);
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// Apply calendar-level timezone to events that don't have their own timezone
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if (calendarTimezone) {
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parsedEvents.forEach((event) => {
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if (!event.timezone) event.timezone = calendarTimezone;
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});
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}
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return parsedEvents;
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}
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// deno-lint-ignore no-explicit-any
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function parseICalEvents(icalEvents: Record<string, any>): Event[] {
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// Extract calendar-level timezone if available
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const calendarTz =
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Object.values(icalEvents).find((item) => item.type === "VCALENDAR")
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?.["x-wr-timezone"] || "UTC";
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return Object.values(icalEvents)
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.filter((event) => event.type === "VEVENT")
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.map((event) => {
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// Use event-specific timezone if available, otherwise fallback to calendar timezone
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const eventTz = event.startZone || calendarTz;
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// Convert dates to UTC for internal comparisons
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const start = normalizeDate(event.start, eventTz);
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const end = normalizeDate(event.end, eventTz);
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// Extract timezone information if available
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const timezone = event.start?.tz ? event.start.tz.replace(/^\//, '') : null;
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return {
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start,
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end,
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start: event.start,
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end: event.end,
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location: event.location || "",
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summary: event.summary || "",
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description: event.description || "",
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timezone: eventTz,
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timezone: timezone,
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};
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});
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}
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function normalizeDate(date: Date, timezone: string): Date {
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if (!date) return date;
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try {
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// Convert the date to UTC while respecting the original timezone
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return fromZonedTime(date, timezone);
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} catch (e) {
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console.warn(`Failed to parse timezone ${timezone}:`, e);
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return date;
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}
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}
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export function filterEvents(