Tagging URL --> Summary Page

[demlak]

Ok, here is the code, if anyone is interested in. maybe it is a help for someone.
Since, the markdown-extra tables are not very comfortable to align and multiple head-lines are not supported, i will change my original idea and write my own html table and/or tab based template. also i’m not sure which data i will output. so, here is a sample output you will have to modifiy for yourself. at this stage, i think, every change will just help myself and not anyone else… so here are my findings/is my code.

• The Plugin analyses the raw content files for Markdown Links which are extended by a tag: attribut.
• Original: (link: http://wikipedia.de text: wikipedia Website)
• New: (link: http://wikipedia.de tag: wiki text: wikipedia Website)
• when you use the new snippet tag in any of your pages, you will get a table of link collection.

site/snippets/linksnippet.php

<div>
<?php
$items = page('home')->children()->visible();

foreach($items as $item) {
    page::$methods['getTaggedLinklist'] = function($page, $field = null) {
          if(!is_null($field) && in_array($field, $page->content()->fields())) {
          $raw = $page->{$field}();
            } else {
                $raw = $page->content()->raw();
                }
        // find all tags
        preg_match_all('!`[^``]*`(*SKIP)(*F)|\(([^)]+\))!', $raw, $matches);
        $list = [];
        if(count($matches[0]) > 0) {
          // loop through the matches
          foreach($matches[0] as $match) {
            // remove the brackets
            $tag  = trim(rtrim(ltrim($match, '('), ')'));
              // get the name of the tag
              $name = trim(substr($tag, 0, strpos($tag, ':')));
                // check if it is a link tag
                if($name == 'link') {
                  // create a new Kirbytag instance
                  $tag = new Kirbytag(null, $name, $tag);
                  // check if tag is included
                  if(!is_null($tag->attr('tag'))) {
                    // get all the attributes and add them to our list
                    $list[] = $tag->attr();
                  }
                }
          }
        }
        return $list;
      };

      foreach($item->getTaggedLinklist() as $element) {
          // define content of each link-array
      if(empty($element['text'])) {
            $textelement = parse_url($element['link'], PHP_URL_HOST);
              } else {
                $textelement = $element['text'];
                }
          $output = array(
                  'tag' => $element['tag'],
                  'link' => $element['link'],
                  'text' => $textelement,
                  'pagetitle' => $item->title()->value(),
                  'pagelink' => $item->url(),
                  'date' => $item->date()
                  );
          $key = $element['tag'];
          $full[$key][] = $output; // add link-array to tag-group
          // filter duplicate links while
              $temparr = array_unique(array_column($full[$key], 'link'));
              $finalarray[$key] = array_intersect_key($full[$key], $temparr);
          // sort each element in a tag-group by date
              usort($finalarray[$key], function($a, $b) {
                        return $a['date'] - $b['date'];
                        }
                    );
      }
    }

    // sort tag-groups by alphabet
    uksort($finalarray, 'strcasecmp');

    // generate markdown table of array

    $tgmt = "\n"; // tag group markdown table
    foreach($finalarray as $taggroupname => $taggroup) {
    $tgmt .= '### ' . $taggroupname . "\n";
    $tgmt .= '|link|text|date|' . "\n"; // table header
    $tgmt .= '|--|--:|--:|' . "\n";
        foreach($taggroup as $tgi) { // taggroupitem
            // convert unix timestamp
            $timeconv = date('Y.m.d - H:i', $tgi['date']);

            // generate table row
            $linkstring = url::short($tgi['link'], 33);

            $link = '(link: ' .  $tgi['link'] . ' text: ' . $linkstring . ')';
            $tgmt .= '|' . $link . '|' . $tgi['text'] . '|(link: ' .  $tgi['pagelink'] . ' text: ' . $timeconv . ')|' . "\n";
        }
    }
    echo kirbytext($tgmt);
?>
</div>

site/tag/link.php

<?php

// link tag
kirbytext::$tags['link'] = array(
  'attr' => array(
    'text',
    'class',
    'role',
    'title',
    'rel',
    'lang',
    'target',
    'popup',
    'tag'
  ),
  'html' => function($tag) {

    $link = url($tag->attr('link'), $tag->attr('lang'));
    $text = $tag->attr('text');

    if(empty($text)) {
      $text = $link;
    }

    if(str::isURL($text)) {
      $text = url::short($text);
    }

    return html::a($link, $text, array(
      'rel'    => $tag->attr('rel'),
      'class'  => $tag->attr('class'),
      'role'   => $tag->attr('role'),
      'title'  => $tag->attr('title'),
      'target' => $tag->target(),
    ));

  }
);

site/tag/snippet.php

<?php
kirbytext::$tags['snippet'] = array(
  'attr' => array(
  ),
  'html' => function($tag) {
        $file =  $tag->attr('snippet');
        return snippet($file, array(), true);
  }
);

some notes:

• links inside codeblocks or inline-code are ignored
• duplicate links are ignored
• invisible pages are ignored
• output is sorted by tag and by date
• when text attribute is empty, the hostname of the link is used as text
• tags are case-sensitive
• take a look at linksnippet.php to get an idea of outputcode
• i’m not a coder. those few lines of code cost me a lot of time. most of you will laugh on the ugly code, the ugly structure and time i wasted. i know, the most of you would write something like this is an hour or less. for me it took several full days of finding code snippets and trying to understand them.
• thx a lot to @texnixe for your help.
• also a lot help was the idea of this thread: Embedding Snippets

Include in site

possible output (with align-problem)