<?php

if (!defined('PHPWG_ROOT_PATH')) die('Hacking attempt!');

// Define the path to our plugin.
define('XMPSIDECAR_DIR', basename(dirname(__FILE__)));
define('XMPSIDECAR_PATH', PHPWG_PLUGINS_PATH . XMPSIDECAR_DIR . '/');

add_event_handler(
    'format_exif_data',
    'import_xmp_sidecar'
);

/**
 * Process XMP sidecar files and merge the data into the EXIF data.
 *
 * Function logic was pulled from https://surniaulula.com/2013/apps/wordpress/read-adobe-xmp-xml-in-php/
 * and took some inspiration from http://piwigo.org/forum/viewtopic.php?id=25709
 * amended by rw22mhhs
 * 
 * @param array $exif
 * @param string $filename
 * @return void
 */

function import_xmp_sidecar($exif, $filename)
{
    /* 
    $logFile = "/share/CE_CACHEDEV1_DATA/Web/media/logs/xmp-plugin-logfile.log";
    error_log("#########################################\n", 3, $logFile);
    error_log("import_xmp_sidecar called for file: $filename\n", 3, $logFile);
    */ 
    
    $sidecarFilename = "$filename.xmp";
    if (!file_exists($sidecarFilename)) {
        return $exif;
    }

    $xmpRaw = file_get_contents($sidecarFilename);
    $xmpData = array();

    $tags = [
        'Creator Email'         => '<Iptc4xmpCore:CreatorContactInfo[^>]+?CiEmailWork="([^"]*)"',
        'Owner Name'            => '<rdf:Description[^>]+?aux:OwnerName="([^"]*)"',
        'Creation Date'         => '<rdf:Description[^>]+?xmp:CreateDate="([^"]*)"',
        'Modification Date'     => '<rdf:Description[^>]+?xmp:ModifyDate="([^"]*)"',
        'Label'                 => '<rdf:Description[^>]+?xmp:Label="([^"]*)"',
        'Credit'                => '<rdf:Description[^>]+?photoshop:Credit="([^"]*)"',
        'Source'                => '<rdf:Description[^>]+?photoshop:Source="([^"]*)"',
        'Headline'              => '<rdf:Description[^>]+?photoshop:Headline="([^"]*)"',
        'City'                  => '<rdf:Description[^>]+?photoshop:City="([^"]*)"',
        'State'                 => '<rdf:Description[^>]+?photoshop:State="([^"]*)"',
        'Country'               => '<rdf:Description[^>]+?photoshop:Country="([^"]*)"',
        'Country Code'          => '<rdf:Description[^>]+?Iptc4xmpCore:CountryCode="([^"]*)"',
        'Location'              => '<rdf:Description[^>]+?Iptc4xmpCore:Location="([^"]*)"',
        'Title'                 => '<dc:title>\s*<rdf:Alt>\s*(.*?)\s*<\/rdf:Alt>\s*<\/dc:title>',
        'Description'           => '<dc:description>\s*<rdf:Alt>\s*(.*?)\s*<\/rdf:Alt>\s*<\/dc:description>',
        'Creator'               => '<dc:creator>\s*<rdf:Seq>\s*(.*?)\s*<\/rdf:Seq>\s*<\/dc:creator>',
        'Keywords'              => '<dc:subject>\s*<rdf:Bag>\s*(.*?)\s*<\/rdf:Bag>\s*<\/dc:subject>',
        'Hierarchical Keywords' => '<lr:hierarchicalSubject>\s*<rdf:Bag>\s*(.*?)\s*<\/rdf:Bag>\s*<\/lr:hierarchicalSubject>'
    ];

    foreach ($tags as $key => $regex) {
        $key = "xmp_" . str_replace(' ', '_', strtolower($key));
        $xmpData[$key] = preg_match("/$regex/is", $xmpRaw, $match) ? $match[1] : '';
        if ($key === 'xmp_hierarchical_keywords') {
            // Hierarchical keywords special processing
            $hierarchicalKeywords = preg_match_all("/<rdf:li[^>]*>([^>]*)<\/rdf:li>/is", $xmpData[$key], $match) ? $match[1] : [];
            $filteredKeywords = array_filter($hierarchicalKeywords, function($val) {
                return strpos($val, '_') === 0;
            });
            $xmpData[$key] = implode(',', $filteredKeywords);
        } else {
            // Generic handling for other fields
            $xmpData[$key] = preg_match_all("/<rdf:li[^>]*>([^>]*)<\/rdf:li>/is", $xmpData[$key], $match) ? implode(',', $match[1]) : $xmpData[$key];
        }
    }

    // Remove empty values
    $xmpData = array_filter($xmpData, function($value) {
        return !empty($value);
    });

    $exif = array_merge($exif, $xmpData);
    
    /*
    // Log the extracted data
    foreach ($xmpData as $key => $val) {
        error_log("$key: $val\n", 3, $logFile);
    }

    error_log("----------------------------------------\n", 3, $logFile);
    error_log("Exif data after merging with XMP sidecar data:\n", 3, $logFile);
    foreach ($exif as $key => $val) {
        if (is_array($val)) {
            $val = implode(', ', $val);
        }
        error_log("$key: $val\n", 3, $logFile);
    }
    */
    
    return $exif;
}

  if (!$conf['allow_html_in_metadata'])
  {
// inserted rw22mhhs 
   if (!function_exists('strip_html_in_metadata')) { // inserted rw22mhhs 18.04.2024
    function strip_html_in_metadata() {
        function strip_html_in_metadata(&$v, $k)
    {
      $v = strip_tags($v);
    }
   }} // inserted rw22mhhs 
    foreach ($result as $key => $value)
    {
      // in case the origin of the photo is unsecure (user upload), we remove
      // HTML tags to avoid XSS (malicious execution of javascript)
      if (is_array($value))
      {
        array_walk_recursive($value, 'strip_html_in_metadata');
      }
      else
      {
        $result[$key] = strip_tags($value);
      }
    }
  }

  return $result;
}

// inserted by rw22mhhs to filter underscore_tags from user accounts.
function get_available_tags($tag_ids=array())
{
   global $user;
  
  // we can find top fatter tags among reachable images
  $query = '
SELECT tag_id, COUNT(DISTINCT(it.image_id)) AS counter
  FROM '.IMAGE_CATEGORY_TABLE.' ic
    INNER JOIN '.IMAGE_TAG_TABLE.' it
    ON ic.image_id=it.image_id
  WHERE 1=1
  '.get_sql_condition_FandF(
    array(
      'forbidden_categories' => 'category_id',
      'visible_categories' => 'category_id',
      'visible_images' => 'ic.image_id'
      ),
    ' AND '
    );

  if (is_array($tag_ids) and count($tag_ids) > 0)
  {
    $query .= '
    AND tag_id IN ('.implode(',', $tag_ids).')
';
  }

  $query .= '
  GROUP BY tag_id
;';
  $tag_counters = query2array($query, 'tag_id', 'counter');

  if (empty($tag_counters))
  {
    return array();
  }

  $query = '
SELECT *
  FROM '.TAGS_TABLE;
  $result = pwg_query($query);

  $tags = array();
  while ($row = pwg_db_fetch_assoc($result))
  {
    $counter = intval(@$tag_counters[ $row['id'] ]);
    if ($counter) {
        // Inserted by rw22mhhs - exclude Tags with underscore, except for webmasters
        // Ensure that current user is neither administrator nor webmaster
        if (in_array($user['status'], ['admin', 'webmaster']) || strpos($row['name'], '_') !== 0) {
            $row['counter'] = $counter;
            $row['name'] = trigger_change('render_tag_name', $row['name'], $row);
            $tags[] = $row;
        }
    }
  }
  return $tags;  
}

// use_exif: Use EXIF data during database synchronization with files
// metadata
$conf['use_exif'] = true;

// use_exif_mapping: same behaviour as use_iptc_mapping
// inserted by rw22mhhs
$conf['use_exif_mapping'] = array(
  'date_creation' => 'DateTimeOriginal',
  // 'keywords' => 'xmp_keywords'  
  'keywords' => 'xmp_hierarchical_keywords',
  'comment' => 'xmp_description'  
  );

function vjs_format_exif_data($exif, $filename, $map)
{
  global $conf, $picture, $prefixeTable;

  // Begin insert rw22mhhs
  // #####################
  
  // $logFile = "/share/CE_CACHEDEV1_DATA/Web/media/logs/xmp-plugin-logfile.log";
  
  // Remove directory part 'pwg_representative'
  $pathWithoutRep = str_replace('/pwg_representative', '', $filename);

  // Check, if path ends with '.jpg' endet, replace by '.mp4'
  if (substr($pathWithoutRep, -4) === '.jpg') {
    $newPath = substr_replace($pathWithoutRep, '.mp4', -4);
  }
  
  // error_log("#########################################\n", 3, $logFile);
    // error_log("vjs-Dateiname: $newPath\n", 3, $logFile);
    
  // Insertd rw22mmhs: Import metadata from the XMP sidecar file if applicable
  $exif = import_xmp_sidecar($exif, $newPath);

  // End insert rw22mhhs
  // ###################

<?php
defined('PHPWG_ROOT_PATH') or die('Hacking attempt!');

/*
Plugin Name: Hide Tags for Users
Version: 1.0
Description: Hides Tags for users logged, if not loged in as admin or webmaster. Needs to be used together with Advanced Menu Manager in order to additionally hide the Tags menu.
Author: rw22mhhs
*/


add_event_handler('loc_begin_index', 'hide_tags_globally_for_non_admins');
add_event_handler('loc_end_tags', 'hide_tags_for_non_admins');
add_event_handler('loc_end_section_init', 'check_user_status_for_tags');

function check_user_status_for_tags()
{
    global $user, $page, $conf;
    
    // Ensure that current user is neither administrator nor webmaster
    if (!in_array($user['status'], ['admin', 'webmaster'])) {
        // Deactivate tags for search and menu 
        $conf['menubar_tag_cloud_items_number'] = 0;
        $conf['full_tag_cloud_items_number'] = 0;
        $conf['content_tag_cloud_items_number'] = 0;

        // Prevent tags from appearing in search results
        if ($page['section'] == 'tags' || $page['section'] == 'search') {
            $page['items'] = array();
        }
    }
}

function hide_tags_for_non_admins()
{
    global $user, $template;

    if (!in_array($user['status'], ['admin', 'webmaster'])) {
        $template->assign('tags', array());
        $template->assign('letters', array());
    }
}

function hide_tags_globally_for_non_admins()
{
    global $user, $conf;
    
    if (!in_array($user['status'], ['admin', 'webmaster'])) {
        $conf['menubar_tags_enabled'] = false;
    }
}
?>