Initial commit

2022-09-28 14:44:49 +02:00
commit e46b8baa77
59 changed files with 60320 additions and 0 deletions
--- a/public/ical.php
+++ b/public/ical.php
@@ -0,0 +1,101 @@
+<?php
+
+require __DIR__.'/../vendor/autoload.php';
+require __DIR__.'/../config/config.php';
+
+use Sabre\VObject;
+
+function create_calendar($courses)
+{
+    $vcalendar = new VObject\Component\VCalendar();
+    $tz = $vcalendar->createComponent('VTIMEZONE', [
+        'TZID' => 'CET',
+    ]);
+    $standard = $vcalendar->createComponent('STANDARD', [
+        'DTSTART' => '16010101T030000',
+        'TZOFFSETFROM' => '+0200',
+        'TZOFFSETTO' => '+0100',
+        'RRULE' => 'FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=10',
+    ]);
+    $daylight = $vcalendar->createComponent('DAYLIGHT', [
+        'DTSTART' => '16010101T020000',
+        'TZOFFSETFROM' => '+0100',
+        'TZOFFSETTO' => '+0200',
+        'RRULE' => 'FREQ=YEARLY;INTERVAL=1;BYDAY=-1SU;BYMONTH=3',
+    ]);
+
+    $tz->add($standard);
+    $tz->add($daylight);
+    $vcalendar->add($tz);
+
+    $db = new PDO("sqlite:".__DIR__."/../roosters.db");
+    $in = str_repeat('?,', count($courses) - 1).'?';
+    $stmt = $db->prepare("SELECT file FROM courses where id IN ($in)");
+    $stmt->execute($courses);
+    $files = $stmt->fetchAll(PDO::FETCH_COLUMN);
+
+
+    foreach ($files as $file) {
+        $uids = [];
+        $v = VObject\Reader::read(
+            fopen(__DIR__."/../var/cache/$file", 'r'),
+            VObject\Reader::OPTION_FORGIVING
+        );
+
+        /** @var VObject\Component\VEvent $event */
+        foreach ($v->VEVENT as $event) {
+            if (!in_array((string)$event->UID, $uids)) {
+                // Map location to aula
+                $location = (string)$event->LOCATION;
+                if (isset(AULAS[$location])) {
+                    $event->LOCATION = AULAS[$location];
+                }
+
+                $vcalendar->add($event);
+                $uids[] = $event->UID;
+            }
+        }
+    }
+
+    header('Content-Type: text/calendar; charset=utf-8');
+    header('Content-Disposition: attachment; filename="cw.ics"');
+    echo $vcalendar->serialize();
+}
+
+function create_url($courses)
+{
+    include __DIR__.'/../src/header.html';
+
+    sort($courses);
+    $courseStr = implode(":", $courses);
+    $id = substr(md5($courseStr), 0, 8);
+    $actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http")."://$_SERVER[HTTP_HOST]$_SERVER[SCRIPT_NAME]/".urlencode(
+            $id
+        );
+
+    $db = new PDO("sqlite:".__DIR__."/../short_links.db");
+    $stmt = $db->prepare("SELECT * FROM links WHERE id=?");
+    $stmt->execute([$id]);
+    $row = $stmt->fetch(PDO::FETCH_ASSOC);
+    if (!$row) {
+        $stmt = $db->prepare("INSERT INTO links (id, `courses`) VALUES(?,?)");
+        $stmt->execute([$id, $courseStr]);
+    }
+
+    echo '<h5>Use the following url to download the ical file or use it in Google Calendar:</h5>';
+    echo "<input type=\"text\" class=\"form-control\" placeholder=\"\" value='$actual_link'";
+    include __DIR__.'/../src/footer.html';
+}
+
+if (!empty($_GET['course'])) {
+    create_url($_GET['course']);
+} elseif ($_SERVER['PATH_INFO'] !== '') {
+    $id = urldecode(substr($_SERVER['PATH_INFO'], 1));
+
+    $db = new PDO("sqlite:".__DIR__."/../short_links.db");
+    $stmt = $db->prepare("SELECT * FROM links WHERE id=?");
+    $stmt->execute([$id]);
+    $row = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    create_calendar(explode(':', urldecode($row["courses"])));
+}