ctdo.de/php/util.php

<?php

class Util {
    function css_link($src) {
        return '<link rel="stylesheet" href="'.$src.'">';
    }

    function generate_nav($active_page, $pages, $page_names) {
        $output = '<nav><ul>';
        foreach ($pages as $key => $page) {
            if ($page == $active_page)
                $output .= '<li>'.$this->html_link('/?page='.$page, 'active', $page_names[$key], FALSE).'</li>';
            else
                $output .= '<li>'.$this->html_link('/?page='.$page, '', $page_names[$key], FALSE).'</li>';
        }
        $output .= '</ul></nav>';

        return $output;
    }

    function html_link($href, $class, $innerHTML, $blank) {
        if($blank)
            return '<a href="'.$href.'" class="'.$class.'" target="_blank">'.$innerHTML.'</a>';
        else
            return '<a href="'.$href.'" class="'.$class.'">'.$innerHTML.'</a>';
    }

    function raumstatus() {
        $url = 'https://status.ctdo.de/api/simple/v2';
        $data = json_decode(file_get_contents($url), true);
        return $data['state'];
    }

    function str_mass_replace($searchs, $replacers, $string) {
        foreach ($searchs as $key => $search) {
            $string = str_replace($search, $replacers[$key], $string);
        }
        return $string;
    }

    //Posts
    function scan_for_posts() {
        $s = scandir(__DIR__ . '/../posts/', SCANDIR_SORT_DESCENDING);
        $output = array();
        foreach ($s as $f) {
            if(count(str_split($f)) >= 4)
                $output[] = $f;
        }
        return $output;
    }

    function generate_post_list($limit = -1) {
        $events = $this->scan_for_posts();
        $output = "";
        if ($limit == -1) {
            foreach ($events as $event) {
                $lines = file(__DIR__ . '/../posts/' . $event);
                $title = $lines[0];
                $desc = $lines[1];
                $date = $lines[2];
                $signatur = $lines[3];
                $output .= '<div class="eventblock"><h3>'.$signatur.'<br>'.$date.'</h3><a href="?page=blog&id='.str_replace('.md', '', $event).'"><h2>'.$title.'</h2><p>'.$desc.'</p></a></div>';
            }
        } else {
            if($limit > count($events))
                $limit = count($events);
            for ($i = 0; $i < $limit; $i++) {
                $lines = file(__DIR__ . '/../posts/' . $events[$i]);
                $title = $lines[0];
                $desc = $lines[1];
                $date = $lines[2];
                $signatur = $lines[3];
                $output .= '<div class="eventblock"><h3 class="a">'.$signatur.'</h3><h3 class="b">'.$date.'</h3><a href="?page=blog&id='.str_replace('.md', '', $events[$i]).'"><h2>'.$title.'</h2><p>'.$desc.'</p></a></div>';
            }
        }
        return $output;
    }

    function get_post_content($id) {
        $lines = file(__DIR__ . '/../posts/' . str_replace('.', '', $id) . '.md');
        $output = "";
        for ($i = 5; $i < count($lines); $i++)
            $output .= $lines[$i] . "\n";
        return $output;
    }
    //Posts end

    //Events
    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) {
        $events = $this->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>'.$desc.'</p></a></div>';
            }
        } else {
            if($limit > count($events))
                $limit = count($events);
            for ($i = 0; $i < $limit; $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;
    }
    //Events end

    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;
      }
    
}

?>