156 lines
3.9 KiB
PHP
156 lines
3.9 KiB
PHP
<?php
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// URL der öffentlichen ICS-Datei
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define(
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'CAL_URL',
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'https://calendar.google.com/calendar/ical/jv1bq94un3ivoa8ka0rk9ngq4k%40group.calendar.google.com/public/basic.ics',
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);
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function format_ics_date($date)
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{
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// Unterstützt sowohl ganztägige als auch Zeitangaben
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if (strpos($date, 'T') !== false) {
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$dt = DateTime::createFromFormat('Ymd\THis', substr($date, 0, 15));
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return $dt ? $dt->format('d.m.Y H:i') : $date;
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} else {
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$dt = DateTime::createFromFormat('Ymd', $date);
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return $dt ? $dt->format('d.m.Y') : $date;
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}
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}
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function format_ics_date_with_timezone($date, $timezone = null)
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{
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// Unterstützt sowohl ganztägige als auch Zeitangaben
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if (strpos($date, 'T') !== false) {
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$dt = null;
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// Prüfe ob es eine UTC-Zeit ist (endet mit Z)
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if (substr($date, -1) === 'Z') {
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// UTC-Zeit: 20250405T130000Z
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$utc_date = substr($date, 0, -1); // Entferne das Z
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$dt = DateTime::createFromFormat('Ymd\THis', $utc_date, new DateTimeZone('UTC'));
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} elseif ($timezone) {
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// Zeitzone angegeben: 20250405T130000 mit TZID
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try {
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$dt = new DateTime($date, new DateTimeZone($timezone));
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} catch (Exception $e) {
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// Fallback auf lokale Zeit
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$dt = DateTime::createFromFormat('Ymd\THis', substr($date, 0, 15));
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}
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} else {
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// Lokale Zeit ohne Zeitzone
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$dt = DateTime::createFromFormat('Ymd\THis', substr($date, 0, 15));
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}
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if ($dt) {
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// ISO 8601 Format für JavaScript
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$iso_date = $dt->format('Y-m-d\TH:i:sP'); // P = Zeitzone
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$display_date = $dt->format('d.m.Y H:i');
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return [
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'iso' => $iso_date,
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'display' => $display_date,
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'has_time' => true,
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];
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}
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return [
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'iso' => $date,
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'display' => $date,
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'has_time' => true,
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];
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} else {
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$dt = DateTime::createFromFormat('Ymd', $date);
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if ($dt) {
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$iso_date = $dt->format('Y-m-d');
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$display_date = $dt->format('d.m.Y');
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return [
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'iso' => $iso_date,
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'display' => $display_date,
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'has_time' => false,
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];
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}
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return [
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'iso' => $date,
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'display' => $date,
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'has_time' => false,
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];
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}
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}
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// Cache für 24 Stunden (in Minuten)
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$cacheDuration = 24 * 60;
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$cacheId = 'google_calendar_events';
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$cache = kirby()->cache('pages');
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// Termine parsen
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function parse_ics($ics)
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{
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$lines = explode("\n", $ics);
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$events = [];
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$event = [];
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$inEvent = false;
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foreach ($lines as $line) {
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$line = trim($line);
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if ($line === 'BEGIN:VEVENT') {
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$inEvent = true;
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$event = [];
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} elseif ($line === 'END:VEVENT') {
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$inEvent = false;
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$events[] = $event;
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} elseif ($inEvent) {
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// Property kann Parameter enthalten, z.B. DTSTART;TZID=Europe/Berlin:20240701T19000000
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$parts = explode(':', $line, 2);
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if (count($parts) === 2) {
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$key = $parts[0];
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$val = $parts[1];
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// Zeitzoneninformation extrahieren
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$timezone = null;
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if (preg_match('/TZID=([^:;]+)/', $key, $matches)) {
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$timezone = $matches[1];
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}
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// Nur den eigentlichen Property-Namen extrahieren
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$cleanKey = strtoupper(preg_replace('/;.+$/', '', $key));
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$event[$cleanKey] = $val;
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// Zeitzoneninformation separat speichern
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if ($timezone && in_array($cleanKey, ['DTSTART', 'DTEND'])) {
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$event[$cleanKey . '_TZID'] = $timezone;
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}
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}
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}
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}
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return $events;
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}
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return function () use ($cache, $cacheId, $cacheDuration) {
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// Versuche Daten aus dem Cache zu laden
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$events = $cache->get($cacheId);
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if ($events === null) {
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// Wenn nicht im Cache, neu laden
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$ics = @file_get_contents(CAL_URL);
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if (!$ics) {
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// Fehler beim Laden (z.B. 429 Error)
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return null;
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}
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// Termine parsen
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$events = parse_ics($ics);
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// In Cache speichern
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$cache->set($cacheId, $events, $cacheDuration);
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}
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return $events;
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};
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