first commit

Made-with: Cursor
2026-04-01 02:46:53 +00:00
commit 76210db03d
126 changed files with 20208 additions and 0 deletions
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+import { Router, Request, Response } from 'express';
+import { prisma } from '../db/prisma';
+
+const router = Router();
+
+function escapeIcs(text: string): string {
+  return text
+    .replace(/\\/g, '\\\\')
+    .replace(/;/g, '\\;')
+    .replace(/,/g, '\\,')
+    .replace(/\n/g, '\\n')
+    .replace(/\r/g, '');
+}
+
+// ICS lines must be folded at 75 octets (RFC 5545 §3.1)
+function fold(line: string): string {
+  const MAX = 75;
+  if (line.length <= MAX) return line;
+  let out = '';
+  let pos = 0;
+  while (pos < line.length) {
+    if (pos === 0) {
+      out += line.slice(0, MAX);
+      pos = MAX;
+    } else {
+      out += '\r\n ' + line.slice(pos, pos + MAX - 1);
+      pos += MAX - 1;
+    }
+  }
+  return out;
+}
+
+function toIcsDate(d: Date): string {
+  const p = (n: number) => String(n).padStart(2, '0');
+  return (
+    `${d.getUTCFullYear()}${p(d.getUTCMonth() + 1)}${p(d.getUTCDate())}` +
+    `T${p(d.getUTCHours())}${p(d.getUTCMinutes())}${p(d.getUTCSeconds())}Z`
+  );
+}
+
+// Parse "HH:MM", "H:MM am/pm", "Hpm" etc.
+function parseLocalTime(t: string): { h: number; m: number } {
+  const clean = t.trim();
+  const m24 = clean.match(/^(\d{1,2}):(\d{2})$/);
+  if (m24) return { h: parseInt(m24[1]), m: parseInt(m24[2]) };
+
+  const mAp = clean.match(/^(\d{1,2})(?::(\d{2}))?\s*(am|pm)$/i);
+  if (mAp) {
+    let h = parseInt(mAp[1]);
+    const m = mAp[2] ? parseInt(mAp[2]) : 0;
+    if (mAp[3].toLowerCase() === 'pm' && h !== 12) h += 12;
+    if (mAp[3].toLowerCase() === 'am' && h === 12) h = 0;
+    return { h, m };
+  }
+  return { h: 18, m: 0 };
+}
+
+// Brussels is UTC+1 (CET) / UTC+2 (CEST). Use +1 as conservative default.
+const BRUSSELS_OFFSET_HOURS = 1;
+
+function parseEventDates(
+  dateStr: string,
+  timeStr: string
+): { start: Date; end: Date } {
+  const [year, month, day] = dateStr.split('-').map(Number);
+  const parts = timeStr.split(/\s*[-–]\s*/);
+  const { h: startH, m: startM } = parseLocalTime(parts[0]);
+
+  // Convert local Brussels time to UTC
+  const utcStartH = startH - BRUSSELS_OFFSET_HOURS;
+  const start = new Date(Date.UTC(year, month - 1, day, utcStartH, startM, 0));
+
+  let end: Date;
+  if (parts[1]) {
+    const { h: endH, m: endM } = parseLocalTime(parts[1]);
+    const utcEndH = endH - BRUSSELS_OFFSET_HOURS;
+    end = new Date(Date.UTC(year, month - 1, day, utcEndH, endM, 0));
+    if (end <= start) end = new Date(end.getTime() + 24 * 60 * 60 * 1000);
+  } else {
+    end = new Date(start.getTime() + 2 * 60 * 60 * 1000);
+  }
+
+  return { start, end };
+}
+
+router.get('/ics', async (_req: Request, res: Response) => {
+  try {
+    const sevenDaysAgo = new Date();
+    sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
+    const cutoff = sevenDaysAgo.toISOString().slice(0, 10);
+
+    const meetups = await prisma.meetup.findMany({
+      where: { date: { gte: cutoff } },
+      orderBy: { date: 'asc' },
+    });
+
+    const siteUrl = (process.env.FRONTEND_URL || 'https://belgianbitcoinembassy.org').replace(
+      /\/$/,
+      ''
+    );
+    const now = new Date();
+
+    const lines: string[] = [
+      'BEGIN:VCALENDAR',
+      'VERSION:2.0',
+      'PRODID:-//Belgian Bitcoin Embassy//Events//EN',
+      'CALSCALE:GREGORIAN',
+      'METHOD:PUBLISH',
+      fold('X-WR-CALNAME:Belgian Bitcoin Embassy Events'),
+      fold('X-WR-CALDESC:Upcoming meetups and events by the Belgian Bitcoin Embassy'),
+      'X-WR-TIMEZONE:Europe/Brussels',
+    ];
+
+    for (const meetup of meetups) {
+      try {
+        const { start, end } = parseEventDates(meetup.date, meetup.time);
+        const eventUrl = meetup.link || `${siteUrl}/events/${meetup.id}`;
+
+        lines.push('BEGIN:VEVENT');
+        lines.push(fold(`UID:${meetup.id}@belgianbitcoinembassy.org`));
+        lines.push(`DTSTAMP:${toIcsDate(now)}`);
+        lines.push(`DTSTART:${toIcsDate(start)}`);
+        lines.push(`DTEND:${toIcsDate(end)}`);
+        lines.push(fold(`SUMMARY:${escapeIcs(meetup.title)}`));
+        if (meetup.description) {
+          lines.push(fold(`DESCRIPTION:${escapeIcs(meetup.description)}`));
+        }
+        if (meetup.location) {
+          lines.push(fold(`LOCATION:${escapeIcs(meetup.location)}`));
+        }
+        lines.push(fold(`URL:${eventUrl}`));
+        lines.push(
+          'ORGANIZER;CN=Belgian Bitcoin Embassy:mailto:info@belgianbitcoinembassy.org'
+        );
+        // 15-minute reminder alarm
+        lines.push('BEGIN:VALARM');
+        lines.push('TRIGGER:-PT15M');
+        lines.push('ACTION:DISPLAY');
+        lines.push(fold(`DESCRIPTION:Reminder: ${escapeIcs(meetup.title)}`));
+        lines.push('END:VALARM');
+        lines.push('END:VEVENT');
+      } catch {
+        // Skip events with unparseable dates
+      }
+    }
+
+    lines.push('END:VCALENDAR');
+
+    const icsBody = lines.join('\r\n') + '\r\n';
+
+    res.set({
+      'Content-Type': 'text/calendar; charset=utf-8',
+      'Content-Disposition': 'inline; filename="bbe-events.ics"',
+      'Cache-Control': 'public, max-age=300',
+    });
+    res.send(icsBody);
+  } catch (err) {
+    console.error('Calendar ICS error:', err);
+    res.status(500).json({ error: 'Internal server error' });
+  }
+});
+
+export default router;