FS-Mod/FSMod/TagJobboerse.php

<?php
/**
 * Jobbörse from FSMod extracted from FSMod.php
 *
 * @file
 * @ingroup Extensions
 * @author Björn Kinscher
 * @copyright © 2009 Björn Kinscher
 * @modified 2014 Christian Zirkelbach
 * @modified 2018,2019 Einhard Leichtfuß
 * @modified 2019,2022 Bennet Bleßmann
 * @license GNU General Public Licence 2.0 or later
 */

if( !defined( 'MEDIAWIKI' ) ) {
	echo( "This file is an extension to the MediaWiki software and cannot be used standalone.\n" );
	die( 1 );
}

class TagJobboerse {

    static function jobexchangePreviewRender (?string $input, array $args, Parser $parser, PPFrame $frame) {
        if (!isset($args['source'])) {
            return "Missing source attribute containing the url to retrieve the preview data from!";
        }

        $opts = [
            'http' => [
                'methode' => "GET"
            ]
        ];

        $context = stream_context_create($opts);

        $data_string = file_get_contents(strval($args['source']), false, $context);

        if ($data_string === false) {
            return "Failed to load Preview Data!";
        }

        $data = json_decode($data_string);

        if (!is_object($data) || !isset($data->version)) {
            return "Failed to parse Preview Data!";
        }

        $max = isset($args["limit"]) ? (@intval($args["limit"]) ?? 2) : 2;
        $i = 0;

        switch ($data->version) {
            case "1": {
                $output = "";

                foreach ($data->entries as $entry) {
                    $i++;
                    if ($i > $max){
                        break;
                    }

                    $date  = date('d.m.Y', strtotime($entry->submission_date));

                    $job_link = $parser->recursiveTagParse("[{$data->overview}#joboffer-{$entry->id} {$entry->title}]",$frame);

                    $output .= "<span style='font-size: 0.9em;'>{$date}</span><br />{$job_link}<br />\n";
                }

                return $output;
            }
            default:
                return "Failed to load Preview Data unrecognized format version";
        }
    }

    static function jobexchangeRender (?string $input, array $args, Parser $parser, PPFrame $frame) {

        switch ($args['type']) {
            case 'full':
                return self::jobexchangeFull($input, $args, $parser, $frame);
            case 'preview':
                return self::jobexchangeMediawikiXMLPreview($input, $args, $parser, $frame);
            default:
                return "Expected Tag to have attribute 'type' with value of 'full' or 'preview'!";
        }

    }

    static function jobexchangeMediawikiXMLPreview (?string $input, array $args, Parser $parser, PPFrame $frame) {

        libxml_use_internal_errors(true);

        // fallback to Jobbörse_Einträge if source is not present or null for legacy reasons
        $article_text = FSMod::loadArticle($args['source']??'Jobbörse_Einträge', $parser);
	    $article = preg_replace('/<jobexchange type="full">|<\/jobexchange>/i', '', $article_text);


	    $xml = simplexml_load_string(trim($article));

        if ($xml === false) {
            $errors = libxml_get_errors();
            return FSMod::handle_xml_errors($errors, $article, $parser);
        }

        // Jobbörse as legacy fallback
        $full = $args['full_listing'] ?? "Jobbörse";

	    $elements = $xml->children();

        $output = '';

        $i = 0;

        // fallback to 2 for legacy reasons
        $max = isset($args["limit"]) ? (@intval($args["limit"]) ?? 2) : 2;

        foreach ( $elements as $job ) {
            $i++;
	        if ($i > $max){
		        break;
            }

            $date  = date('d.m.Y', strtotime($job->date));
            $id    = isset($job['id'])? "#{$job['id']}" : '';
            $short = $job->shortdesc;

            $job_link = $parser->recursiveTagParse("[[{$full}{$id} | {$short}]]",$frame);

	        $output .= "<span style='font-size: 0.9em;'>{$date}</span><br />{$job_link}<br />\n";

        }
        return $output;
    }

    static function jobexchangeFull (?string $input, array $args, Parser $parser, PPFrame $frame) {

        libxml_use_internal_errors(true);

	    $xml = simplexml_load_string(trim($input));

	    if ($xml === false) {
            $errors = libxml_get_errors();
            return FSMod::handle_xml_errors($errors, $input, $parser);
        }

	    $elements = $xml->children();

        $output = '';

        $timezone = new DateTimeZone("Europe/Berlin");

	    foreach ( $elements as $job ) {

            $dateEntry = null;
            try {
                $dateEntry = new DateTime((string) $job->date, $timezone);
            } catch(Exception $e) {
                $dateEntry = new DateTime("1970-01-01", $timezone);
            }

            $today = new DateTime("today", $timezone);

            $date      = $dateEntry->format('d.m.Y');
            $id        = isset($job['id'])? "id='{$job['id']}'" : '';
            $short     = FSMod::parseTagRecursive($job->shortdesc, $parser, $frame);
            $full      = FSMod::parseTagRecursive($job->fulldesc , $parser, $frame);

            $explicitExpiery = count($job->expires) > 0 ? new DateTime((string) $job->expires, $timezone) : null;
            $implicitExpiery = (clone $dateEntry)->modify("+6 month");

            $expires = "";

            if ($explicitExpiery !== null) {
                $formatedExpiery = $explicitExpiery->format('d.m.Y');
                // when an explicit expiery date is given show it in the listing
                $expires = "Gültig bis: {$formatedExpiery} <br />";
            } else if ($parser->getUserIdentity()->isRegistered() && $implicitExpiery < $today) {
                // when the implicit expiery has passed an the current user is logged in show a note
                $expires = "<strong>Älter als 6 Monate ohne explizites Ablauf Datum</strong><br/>";
            }


            $fileOutput = "";

            if (isset($job->files)) {

		        $files = $job->files->children();

		        if (count($files) > 0 ) {

			        $fileOutput .= '<br />Anhänge:';

			        foreach ( $files as $file ) {
                        // fallback to name for legacy reasons
                        $filename = $file['filename'] ?? $file['name']; 
                        // fallback to filename if title is not set
                        $filetitle = $file['title'] ?? $filename;

                        $file_link = $parser->recursiveTagParse("[[Media:{$filename} | {$filetitle}]]",$frame);
				        $fileOutput .= "<br />$file_link";
			        }
    		    }
            }

            $linkOutput = "";

            if (isset($job->links)) {

                $links = $job->links->children();

                if (count($links) > 0) {

			        $linkOutput .= '<br />Links:';

                    foreach ($links as $link) {
                        $link_href    = $link['href'];
                        $link_title   = isset($link['title'])? "title='{$link['title']}'" : '';
                        $link_alt     = isset($link['alt']) ? "alt='{$link['alt']}'" : '' ;
                        // fallback to title or href if content is not set
                        $link_content = $link['content'] ?? $link['title'] ?? $link['href']; 

                        $linkOutput .= "<br /><a class='external' referrerpolicy='no-referrer' rel='external' target='_blank' {$link_alt} {$link_title} href='{$link_href}'>{$link_content}</a>";

                    }
                }
            }

            $entryOutput = <<<HTML
{$date}<br />
<strong {$id} > {$short} </strong><br />
{$expires}{$full}{$fileOutput}{$linkOutput}<br />
<br />
HTML;

            $output .= $entryOutput;

	    }
        return $output;
    }

}