<?php
// +-----------------------------------------------------------------------+
// | PiwiShack - a Piwigo Plugin                                           |
// | Copyright (C) 2009 MOREAU Julien - gotcha@piwigo.org                  |
// +-----------------------------------------------------------------------+
// | This program is free software; you can redistribute it and/or modify  |
// | it under the terms of the GNU General Public License as published by  |
// | the Free Software Foundation                                          |
// |                                                                       |
// | This program is distributed in the hope that it will be useful, but   |
// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
// | General Public License for more details.                              |
// |                                                                       |
// | You should have received a copy of the GNU General Public License     |
// | along with this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

class PiwiShack
{
  var $plugin_name, $plugin_path;
  var $opened, $to_close;
  var $config;
  var $list;
  
  /**************************************************************************
   *  function: PiwiShack
   **************************************************************************
   *  Rôle:
   *    Constructeur; charge la config et initialise les handlers 
   *************************************************************************/
  function PiwiShack($plugin_name, $plugin_path)
  {
    // Args
    $this->plugin_name = $plugin_name;
    $this->plugin_path = $plugin_path;

    $this->load_config();

    // handler
    $this->initialize_event_handler();

  }

  /**************************************************************************
   *  function: initialize_event_handler
   **************************************************************************
   *  Rôle:
   *    Ajout des handlers nécessaires aux pages index et picture 
   *    si les droits l'autorisent.    
   *************************************************************************/
  function initialize_event_handler()
  {
  
    if ((($this->config['URLShackRight'] == "admin") && (is_admin()))
     || (($this->config['URLShackRight'] == "member") && (!is_a_guest()))
     ||  ($this->config['URLShackRight'] == "all"))
    {
      if (script_basename() != $this->plugin_name.'_controller')
      {
        add_event_handler('loc_end_index', array(&$this, 'handler_index'));
        add_event_handler('picture_pictures_data', array(&$this, 'handler_picture'));
      }
    }
  }

  /**************************************************************************
   *  function: loading_lang
   **************************************************************************
   *  Rôle:
   *    Chargement des données de langue 
   *************************************************************************/
  function loading_lang()
  {
    load_language('plugin.lang', $this->plugin_path);
  }

  /**************************************************************************
   *  function: get_link_icon
   **************************************************************************
   *  in: 
   *  out: 
   *    code de l'action   
   **************************************************************************
   *  Rôle:
   *    Retourne le code de l'action d'ouverture piwishack 
   *************************************************************************/
  function get_link_icon($main_link)
  {
    global $page;

    if (empty($page['items']))
    {
        return;
    }

    $this->loading_lang();
    $link_title = l10n('open_window_piwishack');
    $link_url = '<img id="urlshackicon" title="'.$link_title.'" onclick="urlshack_switch();" src="'.get_root_url().'plugins/piwishack/icon/controller_open.png" class="button" alt="URLShack links popup">';

    return $link_url;
  }

  /**************************************************************************
   *  function: handler_index
   **************************************************************************
   *  in: 
   *  out: 
   *    Code source   
   **************************************************************************
   *  Rôle:
   *    Handler dans le cas des pages d'index : ajoute le code javascript,
   *     le code html du popup et l'icone d'ouverture piwishack.
   *************************************************************************/
  function handler_index()
  {
    global $template;

    $link_url = $this->get_link_icon(duplicate_index_url());
    if (!empty($link_url))
    {
      $mystyle = '<link rel="stylesheet" type="text/css" href="' . get_root_url() . 'plugins/piwishack/style.css">';
      $template->block_html_head(null, $mystyle);

      // get button javascript code and add to page
      $code = $this->get_js_button_code();
      $template->concat('PLUGIN_INDEX_CONTENT_AFTER', $code);
    
      // Add piwishack button in the list of action icons
      $template->concat('PLUGIN_INDEX_ACTIONS', '<li>'.$link_url.'</li>');
    
      // get popup html code and add to page
      $popup = $this->get_html_popup_code("index");
      $template->concat('PLUGIN_INDEX_CONTENT_AFTER', $popup);
    }
  }

  /**************************************************************************
   *  function: handler_picture
   **************************************************************************
   *  in: 
   *  out: 
   *    Code source   
   **************************************************************************
   *  Rôle:
   *    Handler dans le cas des pages images : ajoute le code javascript,
   *     le code html du popup et l'icone d'ouverture piwishack.    
   *************************************************************************/
  function handler_picture($pictures)
  {
    global $template;

    $link_url = $this->get_link_icon(duplicate_index_url());
    if (!empty($link_url))
    {
      $mystyle = '<link rel="stylesheet" type="text/css" href="' . get_root_url() . 'plugins/piwishack/style.css">';
      $template->block_html_head(null, $mystyle);

      // get button javascript code and add to page
      $code = $this->get_js_button_code();
      $template->concat('PLUGIN_PICTURE_AFTER', $code);
    
      // Add piwishack button in the list of action icons
      $template->concat('PLUGIN_PICTURE_ACTIONS', $link_url);
    
      // get popup html code and add to page
      $popup = $this->get_html_popup_code("picture");
      $template->concat('PLUGIN_PICTURE_AFTER', $popup);
    }
    return $pictures;    
  }

  /**************************************************************************
   *  function: get_js_button_code
   **************************************************************************
   *  in: 
   *  out: 
   *    Code source   
   **************************************************************************
   *  Rôle:
   *    Genere le code javascript de la page 
   *************************************************************************/
  function get_js_button_code()
  {
    $this->loading_lang();
    $link_open = l10n('open_window_piwishack');
    $link_close = l10n('close_window_piwishack');

    $icon_open = get_root_url() . 'plugins/piwishack/icon/controller_open.png';
    $icon_close = get_root_url() . 'plugins/piwishack/icon/controller_close.png'; 
    $code = '
<script type="text/javascript">
  function urlshack_switch() { 
    if (document.getElementById("urlshackpopup").style.visibility != "visible")
      urlshack_open();
    else
      urlshack_close();
  }
  function urlshack_open() { 
    document.getElementById("urlshackpopup").style.visibility = "visible";
    document.getElementById("urlshackicon").src = "' . $icon_close . '";
    document.getElementById("urlshackicon").title = "' . $link_close . '";
    return false;
  }    
  function urlshack_close() {
    document.getElementById("urlshackpopup").style.visibility = "hidden";
    document.getElementById("urlshackicon").src = "' . $icon_open . '";
    document.getElementById("urlshackicon").title = "' . $link_open . '";
    return false;
  }
  function urlshack_html() { 
    document.getElementById("bbcode").style.display = "none";
    document.getElementById("custom").style.display = "none";
    document.getElementById("html").style.display = "block";
    document.getElementById("tab-bbcode").setAttribute("class", "tab");
    document.getElementById("tab-custom").setAttribute("class", "tab");
    document.getElementById("tab-html").setAttribute("class", "tabselected");
    return false;
  }    
  function urlshack_bbcode() { 
    document.getElementById("html").style.display = "none";
    document.getElementById("custom").style.display = "none";
    document.getElementById("bbcode").style.display = "block";
    document.getElementById("tab-bbcode").setAttribute("class", "tabselected");
    document.getElementById("tab-custom").setAttribute("class", "tab");
    document.getElementById("tab-html").setAttribute("class", "tab");
    return false;
  }    
  function urlshack_custom() { 
    document.getElementById("html").style.display = "none";
    document.getElementById("bbcode").style.display = "none";
    document.getElementById("custom").style.display = "block";
    document.getElementById("tab-bbcode").setAttribute("class", "tab");
    document.getElementById("tab-custom").setAttribute("class", "tabselected");
    document.getElementById("tab-html").setAttribute("class", "tab");
    return false;
  }    
   
</script>
        ';
    return $code;
  }

  /**************************************************************************
   *  function: get_html_popup_code
   **************************************************************************
   *  in: 
   *    $pagetype (index ou picture)   
   *  out: 
   *    Code source   
   **************************************************************************
   *  Rôle:
   *    Genere le code html complet du popup piwishack 
   *************************************************************************/
  function get_html_popup_code($pagetype)
  {
    $prefix = 0;

    $icon_close = get_root_url() . 'plugins/piwishack/icon/controller_close.png';
    $icon_open = get_root_url() . 'plugins/piwishack/icon/controller_open.png';
    $this->get_data();
    $listdisp = $this->config['Display'];
    asort($listdisp);
    $namedisp = array_keys($listdisp); 

    $this->loading_lang();

    $popup  = "<div id='urlshackpopup' class='piwishack' >\n";
    $popup .= "<div class='header'><img src='" .$icon_open . "'> &nbsp; Piwishack</div>\n";
    $popup .= "<div class='area'>\n";
    $popup .= "<h1>" . l10n('Partage_me') . "</h1>\n";
    $popup .= "<form>\n";
    $popup .= "<span onclick='urlshack_html();' id='tab-html' class='" . ($this->config['DefaultHtmlBBcode'] == 'html' ? "tabselected" : "tab") . "'>\n";
    $popup .= l10n('sheet_html') . "</span>\n";
    $popup .= "<span onclick='urlshack_bbcode();' id='tab-bbcode' class='" . ($this->config['DefaultHtmlBBcode'] == 'bbcode' ? "tabselected" : "tab") . "'>\n";
    $popup .= l10n('sheet_bbcode') . "</span>\n";
    $popup .= "<span onclick='urlshack_custom();' id='tab-custom' class='" . ($this->config['DefaultHtmlBBcode'] == 'custom' ? "tabselected" : "tab") . "'>\n";
    $popup .= l10n('sheet_custom') . "</span>\n";
    $popup .= "</form>\n";

    // A block is inserted for each format, bbcode and html
    //  but displayed only for the selected (radio) format
    foreach (array("html", "bbcode") as $format)
    {
      $popup.= "<div id='" . $format . "' class='" . ($this->config['DefaultHtmlBBcode'] == $format ? "sheetselected" : "sheet") . "'>\n";
      foreach ($namedisp as $i) {
        if ($listdisp[$i] != 0) {
          // Compute code length
          $current_code = $this->get_codes($i, $format, $prefix);
          $nb_cols = 100;
          $nb_rows = min(1 + (strlen($current_code) / $nb_cols), 5);

          $popup .= "<form>\n";
          $popup .= "<h2>". l10n('post_code_' .$i) . " : </h2>";
          $popup .= '<textarea name="' . $i . '" cols="' . $nb_cols . '" rows="' . $nb_rows .'" onclick="select()">';
          if (($this->config['ImageNameBeforeCode'] === "all")
           || (($this->config['ImageNameBeforeCode'] === "list") && ($pagetype === "index")))
          {
             $prefix = 1;
          }
          $popup .= $current_code;
          $popup .= '</textarea>';
          $popup .= "<img src='plugins/piwishack/icon/$i.png' alt='$i' width='200' />";
          $popup .= "</form>\n";
        }
      }
      $popup .= "</div>\n";
    }

    $nb = count($this->config['ExtendedDisplay']);
    $popup .= "<div id='custom' class='" . ($this->config['DefaultHtmlBBcode'] == "custom" ? "sheetselected" : "sheet") . "'>\n";
    for ($i = 0; $i < $nb; $i++) {
      if ($this->config['ExtendedDisplay'][$i] != "") {
        // Compute code length
        $current_code = $this->get_list_pattern_result($this->config['ExtendedDisplay'][$i]);
        $nb_cols = 125;
        $nb_rows = min(1 + (strlen($current_code) / $nb_cols), 5);

        $popup .= "<form>\n";
        $popup .= "<h2>" . l10n('custom_code') . ($i+1) . " - " . $this->config['ExtendedLabel'][$i] . " </h2>";
        $popup .= '<textarea class="commentContent" name="ExtendedDisplay' . $i . '" cols="' . $nb_cols . '" rows="' . $nb_rows .'" onclick="select()">';
        $popup .= $current_code;
        $popup .= '</textarea>';
        $popup .= "</form>\n";
      }
    }
    $popup .= "</div>\n";
 
    $popup .= "</div>\n";
    $popup .= "<div class='footer'>";
    $popup .= '<button onclick="urlshack_close();"><img src="' .$icon_close . '"><span class="txtbutton">' . l10n('close') . '</span><img src="' .$icon_close . '"></button>';
    $popup .= "</div>\n";
    $popup .= "</div>\n";
    return $popup;
  }

  /**************************************************************************
   *  function: get_data
   **************************************************************************
   *  in: 
   *  out: 
   **************************************************************************
   *  Rôle:
   *    Remplit le tableau d'images en fonction du contexte 
   *************************************************************************/
  function get_data()
  {
    global $page;
    $this->list = array();
    $S = '';

    switch (script_basename())
    {
      case 'index':
      {
        global $pictures;
        if (isset($pictures))
        {
          $this->list = $pictures;
        }
        break;
      }
      case 'picture':
      {
        global $picture;
        if (isset($picture['current']))
        {
          $this->list[] = $picture['current'];
        }
        break;
      }
    }

    if (empty($this->list) and !empty($page['items']))
    {
  	  $rank_of = array_flip($page['items']);
      $query = '
	  SELECT *
      FROM '.IMAGES_TABLE.'
      WHERE id IN ('.implode(',', $page['items']).')
	  ;';

      $result = pwg_query($query);

      while ($row = pwg_db_fetch_assoc($result))
      {
        $row['rank'] = $rank_of[ $row['id'] ];
        array_push($this->list, $row);
      }

      usort($this->list, 'rank_compare');
    }
  }

  /**************************************************************************
   *  function: get_codes
   **************************************************************************
   *  in: 
   *    $type: type du code
   *    $format: html ou bbcode
   *    $prefix : indique si le nom doit précéder le code     
   *  out: 
   *    Code du type
   **************************************************************************
   *  Rôle:
   *    Retourne le code (pattern) correspondant au type fourni 
   *    en le faisant précéder éventuellement du nom de l'image 
   *************************************************************************/
  function get_codes($type, $format, $prefix)
  {
    $pattern = '';
    
    $target = $this->config['WebLinkOpenOnOtherWindow'] == "other" ? " target=_blank" : "";
     
    if ($type === 'Thumbnail') {
      if ($format === 'html')   { $pattern = "<img src=\"##t\" />"; }
      if ($format === 'bbcode') { $pattern = "[img]##t[/img]"; }
    }
    else if ($type === 'ThumbnailToImage') {
      if ($format === 'html')   { $pattern = "<a href=\"##i\"". $target . "><img src=\"##t\" /></a>"; }
      if ($format === 'bbcode') { $pattern = "[url=##i][img]##t[/img][/url]"; }
    }
    else if ($type === 'ThumbnailToGallery') {
      if ($format === 'html')   { $pattern = "<a href=\"##g\"". $target . "><img src=\"##t\" /></a>"; }
      if ($format === 'bbcode') { $pattern = "[url=##g][img]##t[/img][/url]"; }
    }
    else if ($type === 'Image') {
      if ($format === 'html')   { $pattern = "<img src=\"##t\" />"; }
      if ($format === 'bbcode') { $pattern = "[img]##i[/img]"; }
    }
    else if ($type === 'ImageToGallery') {
      if ($format === 'html')   { $pattern = "<a href=\"##g\"". $target . "><img src=\"##i\" /></a>"; }
      if ($format === 'bbcode') { $pattern = "[url=##g][img]##i[/img][/url]"; }
    }
    else if ($type === 'NameToImage') {
      if ($format === 'html')   { $pattern = "<a href=\"##i\"". $target . ">##n</a>"; }
      if ($format === 'bbcode') { $pattern = "[url=##i]##n[/url]"; }
    }
    else if ($type === 'NameToGallery') {
      if ($format === 'html')   { $pattern = "<a href=\"##g\"". $target . ">##n</a>"; }
      if ($format === 'bbcode') { $pattern = "[url=##g]##n[/url]"; }
    }
    if ($prefix === 1) {
      // TO_DO : n'ajouter que si ##n n'est pas déjà dans la chaine ?
      $pattern = "##n: " . $pattern;
    }
    return $this->get_list_pattern_result($pattern);
  }

  /**************************************************************************
   *  function: get_list_pattern_result
   **************************************************************************
   *  in: 
   *    $pattern
   *  out: 
   *    Le code à afficher
   **************************************************************************
   *  Rôle:
   *    Retourne la chaine à afficher pour le pattern fourni et pour 
   *       l'ensemble des images du contexte courant 
   *************************************************************************/
  function get_list_pattern_result($pattern)
  {
    global $page, $lang_info, $conf;
    // force $conf['derivative_url_style'] to 2 (script) to make sure
    // exported HTML/BBCode will use i.php?/upload and not _data/i/upload
    // because you don't know when the cache will be flushed
    $previous_derivative_url_style = $conf['derivative_url_style'];
    $conf['derivative_url_style'] = 2;
    $S = '';
    if (!empty($this->list))
    {
      set_make_full_url();
      foreach ($this->list as $row)
      {
         $S .= $this->get_pattern_result($row, $pattern) . "\n";
      }
      unset_make_full_url();
    }
    
    // restore configuration setting
    $conf['derivative_url_style'] = $previous_derivative_url_style;
    return $S;
  }

  /**************************************************************************
   *  function: get_pattern_result
   **************************************************************************
   *  in: 
   *    $pattern
   *  out: 
   *    La chaine expansée
   **************************************************************************
   *  Rôle:
   *    transformer le pattern fourni en résolvant les variables
   *      ##i : image URL
   *      ##t : thumbnail URL
   *      ##g : galerie URL
   *      ##n : nom de l'image
   *************************************************************************/
  function get_pattern_result($row, $pattern)
  {
    global $page, $lang_info;
    include_once(PHPWG_ROOT_PATH.'/include/functions_picture.inc.php');

    // nom image
    $name = (!empty($row['name']) ? $row['name'] : $row['file']);

    // lien image miniature
    $tbn = DerivativeImage::thumb_url($row);

    // lien image grand format
    $img = DerivativeImage::url(IMG_MEDIUM, $row);

    // lien image dans sa galerie
    $gal = duplicate_picture_url( array( 'image_id' => $row['id'], 'image_file' => $row['file'],));

    $applic = str_replace('##i', $img, $pattern);
    $applic = str_replace('##t', $tbn, $applic);
    $applic = str_replace('##g', $gal, $applic);
    $applic = str_replace('##n', $name, $applic);

    return $applic;
  }
    
  /**************************************************************************
   *  function: load_config
   **************************************************************************
   *  Rôle:
   *    Chargement de la configuration du plugin
   *    Definition des valeurs par défaut    
   *************************************************************************/
  function load_config()
  {
    $x = @file_get_contents( dirname(__FILE__).'/data.dat' );
    if ($x!==false)
    {
      $c = unserialize($x);
      $this->config = $c;
    }

    if ( !isset($this->config))
    {
      // Default configuration
      $this->config['URLShackRight'] = 'admin';    // admin, members, all 
      $this->config['DefaultHtmlBBcode'] = 'bbcode'; // bbcode, html, custom
      $this->config['WebLinkOpenOnOtherWindow'] = 'local';    // local, other
      $this->config['ImageNameBeforeCode'] = 'list';    // no, list, all
      
      $this->config['Display']['Thumbnail'] = 1;
      $this->config['Display']['ThumbnailToGallery'] = 2;
      $this->config['Display']['ThumbnailToImage'] = 3;
      $this->config['Display']['Image'] = 4;
      $this->config['Display']['ImageToGallery'] = 5;
      $this->config['Display']['NameToImage'] = 0;
      $this->config['Display']['NameToGallery'] = 0;
      
      $this->config['ExtendedDisplay'][0] = "Thumbnail in Textile format";
      $this->config['ExtendedLabel'][0] = "!##t(##n)!";

      $this->config['ExtendedDisplay'][1] = "{{##i|##n}}";
      $this->config['ExtendedLabel'][1] = "Image in Creole format";

      $this->config['ExtendedDisplay'][2] = '<h6 style="text-align: center;"><a href="##i" target="_blank"><img class="aligncenter" style="width: 100%; height: 100%;" src="##t" alt="##t" /></a></h6>';
      $this->config['ExtendedLabel'][2] = "Personnalised HTML format example";

      $this->config['ExtendedDisplay'][3] = "##n : ##i";
      $this->config['ExtendedLabel'][3] = "Image name + image URL";

      $this->config['ExtendedDisplay'][4] = ""; 
      $this->config['ExtendedLabel'][4] = ""; 
      $this->config['ExtendedDisplay'][5] = ""; 
      $this->config['ExtendedLabel'][5] = ""; 
      $this->config['ExtendedDisplay'][6] = ""; 
      $this->config['ExtendedLabel'][6] = ""; 
      $this->save_config();
    }
  }

  /**************************************************************************
   *  function: save_config
   **************************************************************************
   *  Rôle:
   *    Sauvegarde de la configuration du plugin 
   *************************************************************************/
  function save_config()
  {
    $file = fopen( dirname(__FILE__).'/data.dat', 'w' );
    fwrite($file, serialize($this->config) );
    fclose( $file );
  }

  /**************************************************************************
   *  function: plugin_admin_menu
   **************************************************************************
   *  in: menu 
   *  out: menu 
   **************************************************************************
   *  Rôle:
   *    Ajout du lien d'administration du plugin
   *************************************************************************/
  function plugin_admin_menu($menu)
  {
    array_push($menu,
      array(
      'NAME' => 'PiwiShack',
      'URL' => get_admin_plugin_menu_link(dirname(__FILE__).'/admin/piwishack_admin.php')
      )
    );
    return $menu;
  }
    
}

?>