ctdo.de/app/php/events.php

<?php

function scan_for_events() {
    $s = scandir(__DIR__ . '/../events/', SCANDIR_SORT_DESCENDING);
    $output = array();
    foreach ($s as $f) {
        if(count(str_split($f)) >= 4 && $f != 'treff.md' && $f != 'topictreff.md' && $f != 'repaircafe.md' && $f != 'brunch.md')
            $output[] = $f;
    }
    return $output;
}

function generate_event_list($limit = -1, $page = 0) {
    $events = scan_for_events();
    $output = "";
    if ($limit == -1) {
        foreach ($events as $event) {
            $lines = file(__DIR__ . '/../events/' . $event);
            $title = $lines[0];
            $desc = $lines[1];
            $date = $lines[2];
            $veranstaltungsort = $lines[4];
            $output .= '<div class="eventblock"><a href="?page=events&id='.str_replace('.md', '', $event).'"><h3 class="a">'.$veranstaltungsort.'</h3><h3 class="b">'.$date.'</h3><h2>'.$title.'</h2><p>'.$desc.'</p></a></div>';
        }
    } else {
        $start_index = $page * $limit;
        $end_index = $start_index + $limit;
        if($end_index > count($events))
            $end_index = count($events);
        for ($i = $start_index; $i < $end_index; $i++) {
            $event = $events[$i];
            $lines = file(__DIR__ . '/../events/' . $event);
            $title = $lines[0];
            $desc = $lines[1];
            $date = $lines[2];
            $veranstaltungsort = $lines[4];
            $output .= '<div class="eventblock"><a href="?page=events&id='.str_replace('.md', '', $event).'"><h3 class="a">'.$veranstaltungsort.'</h3><h3 class="b">'.$date.'</h3><h2>'.$title.'</h2><p>'.$desc.'</p></a></div>';
        }
    }
    return $output;
}

function get_event_content($id) {
    $lines = file(__DIR__ . '/../events/' . str_replace('.', '', $id) . '.md');
    $output = "";
    $output .= '## Datum/Zeit'."\n\n";
    $output .= $lines[2]."\n".$lines[3]."\n\n## Veranstaltungsort\n\n".$lines[4]."\n\n";
    for ($i = 6; $i < count($lines); $i++)
        $output .= $lines[$i] . "\n";
    return $output;
}

function get_next_topic() {
    $output = new stdClass();
    $currentDate = new DateTime();

    $next_topic = clone $currentDate;
    $next_topic->modify('second Tuesday of this month +1 week');
    while ($next_topic->format('N') !== '2') {
        $next_topic->add(new DateInterval('P1D'));
    }

    $output->days = $currentDate->diff($next_topic)->days+1;
    $output->date = $next_topic->format('Y-m-d');

    return $output;
}

function get_next_treff() {
    $output = new stdClass();
    // Get current date and time
    $now = new DateTime();
    
    // Find the next Friday
    $now->modify('next Friday');
    
    // Calculate the number of days until the next Friday
    $diff = $now->diff(new DateTime());
    $days_until = $diff->format('%a');
    
    $output->days = $days_until+1;
    $output->date = $now->format('Y-m-d');
    // Return an array with the count and date of the next Friday
    return $output;
}

function get_next_repaircafe() {
    $output = new stdClass();
    $today = new DateTime();
    $lastDayOfMonth = clone $today;
    $lastDayOfMonth->modify('last day of this month');
    $lastThursday = clone $lastDayOfMonth;

    while ($lastThursday->format('w') != 4) { // Thursday is represented by 4 (0-6, where 0 is Sunday)
        $lastThursday->modify('-1 day');
    }

    $daysUntilLastThursday = $today->diff($lastThursday)->days;

    $output->days = $daysUntilLastThursday;
    $output->date = $lastThursday->format('Y-m-d');

    return $output;
}

function get_next_brunch() {
    $now = new DateTime();
    
    if ($now->format('w') == 0) {
      $nextSunday = clone $now;
    } else {
      $nextSunday = new DateTime('next Sunday');
    }
    
    $weekNumber = (int)$nextSunday->format('W');
    $isEvenWeek = ($weekNumber % 2) == 0;
    
    if ($isEvenWeek) {
      $nextSunday->modify('+1 week');
    }
    
    $differenz = $nextSunday->diff($now);
    $days = $differenz->days;
    
    $output = new stdClass();
    $output->date = $nextSunday->format('Y-m-d');
    $output->days = $days+1;
    
    return $output;
}

?>