<?php
/**
* @package SP Page Builder
* @author JoomShaper http://www.joomshaper.com
* @copyright Copyright (c) 2010 - 2019 JoomShaper
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 or later
*/
//no direct accees
defined ('_JEXEC') or die ('Restricted access');

jimport( 'joomla.filesystem.file' );
jimport('joomla.filesystem.folder');

require_once __DIR__ . '/addons.php';
require_once __DIR__ . './../helpers/helper.php';

require_once JPATH_ROOT .'/administrator/components/com_sppagebuilder/builder/classes/base.php';
require_once JPATH_ROOT .'/administrator/components/com_sppagebuilder/builder/classes/config.php';

class AddonParser {
  public static $loaded_addon = array();
  public static $css_content = array();
  public static $module_css_content = array();
  public static $js_content = '';
  private static $sppagebuilderAddonTags = array();
  private static $template = '';
  public static $authorised = array();

  public static function addAddon($tag, $func)
  {
    if ( is_callable($func) )
    self::$sppagebuilderAddonTags[$tag] = $func;
  }

  public static function spDoAddon($content) {

    if ( false === strpos( $content, '[' ) ) {
      return $content;
    }
    if (empty(self::$sppagebuilderAddonTags) || !is_array(self::$sppagebuilderAddonTags))
    return $content;
    $pattern = self::getAddonRegex();
    return preg_replace_callback( "/$pattern/s", array('AddonParser','doAddonTag'), $content );
  }

  /**
  * Import/Include addon file
  *
  * @param string  $file_name  The addon name. Optional
  *
  * @since 1.0.8
  */
  public static function getAddonPath( $addon_name = '') {

    $template_path = JPATH_ROOT . '/templates/' . self::$template;
    $plugins = self::getPluginsAddons();

    if ( file_exists( $template_path . '/sppagebuilder/addons/' . $addon_name . '/site.php' ) ) {
      return $template_path . '/sppagebuilder/addons/' . $addon_name;
    } elseif ( file_exists( JPATH_ROOT . '/components/com_sppagebuilder/addons/'. $addon_name . '/site.php' ) ) {
      return JPATH_ROOT . '/components/com_sppagebuilder/addons/'. $addon_name;
    } else {
      // Load from plugin
      if(isset($plugins[$addon_name]) && $plugins[$addon_name]) {
        return $plugins[$addon_name];
      }
    }
  }


  private static function getAddonRegex()
  {
    $tagnames = array_keys(self::$sppagebuilderAddonTags);
    $tagregexp = join( '|', array_map('preg_quote', $tagnames) );
    // WARNING! Do not change this regex without changing do_addon_tag() and strip_addon_tag()
    // Also, see addon_unautop() and shortcode.js.
    return
    '\\['                              // Opening bracket
    . '(\\[?)'                           // 1: Optional second opening bracket for escaping shortcodes: [[tag]]
    . "($tagregexp)"                     // 2: Shortcode name
    . '(?![\\w-])'                       // Not followed by word character or hyphen
    . '('                                // 3: Unroll the loop: Inside the opening shortcode tag
    .     '[^\\]\\/]*'                   // Not a closing bracket or forward slash
    .     '(?:'
    .         '\\/(?!\\])'               // A forward slash not followed by a closing bracket
    .         '[^\\]\\/]*'               // Not a closing bracket or forward slash
    .     ')*?'
    . ')'
    . '(?:'
    .     '(\\/)'                        // 4: Self closing tag ...
    .     '\\]'                          // ... and closing bracket
    . '|'
    .     '\\]'                          // Closing bracket
    .     '(?:'
    .         '('                        // 5: Unroll the loop: Optionally, anything between the opening and closing shortcode tags
    .             '[^\\[]*+'             // Not an opening bracket
    .             '(?:'
    .                 '\\[(?!\\/\\2\\])' // An opening bracket not followed by the closing shortcode tag
    .                 '[^\\[]*+'         // Not an opening bracket
    .             ')*+'
    .         ')'
    .         '\\[\\/\\2\\]'             // Closing shortcode tag
    .     ')?'
    . ')'
    . '(\\]?)';                          // 6: Optional second closing brocket for escaping shortcodes: [[tag]]
  }


  private static function doAddonTag ( $m )
  {
    // allow [[foo]] syntax for escaping a tag
    if ( $m[1] == '[' && $m[6] == ']' ) {
      return substr($m[0], 1, -1);
    }
    $tag = $m[2];
    $attr = self::addonParseAtts( $m[3] );
    if ( isset( $m[5] ) ) {
      // enclosing tag - extra parameter
      return $m[1] . call_user_func( self::$sppagebuilderAddonTags[$tag], $attr, $m[5], $tag ) . $m[6];
    } else {
      // self-closing tag
      return $m[1] . call_user_func( self::$sppagebuilderAddonTags[$tag], $attr, null,  $tag ) . $m[6];
    }
  }


  private static function addonParseAtts($text)
  {
    $atts = array();
    $pattern = '/(\w+)\s*=\s*"([^"]*)"(?:\s|$)|(\w+)\s*=\s*\'([^\']*)\'(?:\s|$)|(\w+)\s*=\s*([^\s\'"]+)(?:\s|$)|"([^"]*)"(?:\s|$)|(\S+)(?:\s|$)/';
    $text = preg_replace("/[\x{00a0}\x{200b}]+/u", " ", $text);
    if ( preg_match_all($pattern, $text, $match, PREG_SET_ORDER) ) {
      foreach ($match as $m) {
        if (!empty($m[1]))
        $atts[strtolower($m[1])] = stripcslashes($m[2]);
        elseif (!empty($m[3]))
        $atts[strtolower($m[3])] = stripcslashes($m[4]);
        elseif (!empty($m[5]))
        $atts[strtolower($m[5])] = stripcslashes($m[6]);
        elseif (isset($m[7]) and strlen($m[7]))
        $atts[] = stripcslashes($m[7]);
        elseif (isset($m[8]))
        $atts[] = stripcslashes($m[8]);
      }
    } else {
      $atts = ltrim($text);
    }
    return $atts;
  }


  public static function getAddons() {
    self::$template = self::getTemplateName();

    require_once JPATH_ROOT . '/components/com_sppagebuilder/addons/module/site.php';//include module manually

    $template_path = JPATH_ROOT . '/templates/' . self::$template;
    $tmpl_folders = array();
    if (file_exists($template_path . '/sppagebuilder/addons')) {
      $tmpl_folders = JFolder::folders( $template_path . '/sppagebuilder/addons');
    }


    $folders = JFolder::folders( JPATH_ROOT . '/components/com_sppagebuilder/addons');
    if($tmpl_folders){
      $merge_folders = array_merge( $folders, $tmpl_folders );
      $folders = array_unique( $merge_folders );
    }

    if (count((array) $folders)) {
      foreach ($folders as $folder) {
        $tmpl_file_path = $template_path . '/sppagebuilder/addons/'.$folder.'/site.php';
        $com_file_path = JPATH_ROOT . '/components/com_sppagebuilder/addons/'.$folder.'/site.php';
        if($folder!='module') {
          if(file_exists( $tmpl_file_path ))
          {
            require_once $tmpl_file_path;
          }
          else if(file_exists( $com_file_path ))
          {
            require_once $com_file_path;
          }
        }
      }
    }
  }


  public static function viewAddons( $content, $fluid = 0, $pageName = 'none' ) {

    SpPgaeBuilderBase::loadAddons();
    $addon_list = SpAddonsConfig::$addons;

    self::$authorised = JAccess::getAuthorisedViewLevels(JFactory::getUser()->get('id'));

    $layout_path = JPATH_ROOT . '/components/com_sppagebuilder/layouts';

    $layouts =  new stdClass;

    $layouts->row_start       = new JLayoutFile('row.start', $layout_path);
    $layouts->row_end         = new JLayoutFile('row.end', $layout_path);
    $layouts->row_css         = new JLayoutFile('row.css', $layout_path);

    $layouts->column_start    = new JLayoutFile('column.start', $layout_path);
    $layouts->column_end      = new JLayoutFile('column.end', $layout_path);
    $layouts->column_css      = new JLayoutFile('column.css', $layout_path);

    $layouts->addon_start     = new JLayoutFile('addon.start', $layout_path);
    $layouts->addon_end       = new JLayoutFile('addon.end', $layout_path);
    $layouts->addon_css       = new JLayoutFile('addon.css', $layout_path);

    $doc = JFactory::getDocument();

    if (is_array($content)) {
      $output = '';

      foreach ($content as $row) {
        $row->settings->dynamicId = $row->id;

        // Row Visibility and ACL
        if ( isset($row->visibility) && !$row->visibility ) {
          continue;
        }

        if($fluid == 1) {
          $row->settings->fullscreen = 1;
        }

        $row_css = $layouts->row_css->render(array('options' => $row->settings));
        if($pageName == 'module') {
          array_push( self::$module_css_content, $row_css );
        } else {
          array_push( self::$css_content, $row_css );
        }

        $output .= $layouts->row_start->render(array('options' => $row->settings));

        foreach ($row->columns as $column) {

          $column->settings->cssClassName = $column->class_name;
          $column->settings->cssClassName = str_replace('column-parent ', '', $column->settings->cssClassName);
          $column->settings->cssClassName = str_replace('active-column-parent', '', $column->settings->cssClassName);
          $column->settings->dynamicId = $column->id;

          // Column Visibility and ACL
          if ( isset($column->visibility) && !$column->visibility ) {
            continue;
          }

          $column_css = $layouts->column_css->render(array('options' => $column->settings));
          if($pageName == 'module') {
            array_push( self::$module_css_content, $column_css );
          } else {
            array_push( self::$css_content, $column_css );
          }

          $output .= $layouts->column_start->render(array('options' => $column->settings));

          foreach ($column->addons as $key => $addon) {

            // Addon Visibility and ACL
            if ( isset($addon->visibility) && !$addon->visibility ) {
              continue;
            }

            // ACL
            $access = self::checkAddonACL($addon);
            if(!$access) {
              continue;
            } // End ACL
          

            if ( isset($addon->type) && $addon->type === 'inner_row' ) {
              $newPageName = $pageName == 'module' ? 'module' : 'none';
              $output .= self::viewAddons(array($addon), 1, $newPageName);
            } else {
              $output .= self::getAddonHtmlView( $addon, $layouts, $pageName );
            }
          }

          $output .= $layouts->column_end->render(array('options' => $column->settings));
        }
        $output .=  $layouts->row_end->render(array('options' => $row->settings));
      }

      if($pageName == 'module') {
        return  AddonParser::spDoAddon( $output ) . '<style type="text/css">'. self::convertCssArrayToString(self::minifyCss(self::$module_css_content)).'</style>';
      } else {
        if( $pageName != 'none' ) {
          $app =JFactory::getApplication();
          $params = $app->getParams('com_sppagebuilder');
          $production_mode = $params->get('production_mode', 0);
         
          $inline_css = self::convertCssArrayToString( self::minifyCss(self::$css_content) );
         
          if($production_mode) {
            $css_folder_path = JPATH_ROOT . '/media/com_sppagebuilder/css';
            $css_file_path = $css_folder_path . '/'. $pageName . '.css';
            $css_file_url = JURI::base(true) . '/media/com_sppagebuilder/css/' . $pageName . '.css';

            if(!JFolder::exists( $css_folder_path )) {
              JFolder::create( $css_folder_path );
            }
          
            file_put_contents( $css_file_path, $inline_css );

            if(file_exists( $css_file_path )) {
              $doc->addStylesheet( $css_file_url );
            } else {
              $doc->addStyleDeclaration( $inline_css );
            }
          } else {
            $doc->addStyleDeclaration( $inline_css );
          }

        }
        return AddonParser::spDoAddon( $output );
      }
    } else {
      return '<p>'.$content.'</p>';
    }

  }

  public static function getAddonHtmlView( $addon, $layouts, $pageName = 'none' ) {

    $addon_list = SpAddonsConfig::$addons;

    $addon_name = $addon->name;
    $class_name = 'SppagebuilderAddon' . ucfirst( $addon_name );
    $addon_path = AddonParser::getAddonPath( $addon_name );

    $doc = JFactory::getDocument();

    $output = '';

    if(file_exists($addon_path . '/site.php')) {

      $addon_options = array();
      if(isset($addon_list[$addon->name]['attr']) && $addon_list[$addon->name]['attr']) {
        $addon_groups = $addon_list[$addon->name]['attr'];
        if (is_array($addon_groups)) {
          foreach ($addon_groups as $addon_group) {
            $addon_options += $addon_group;
          }
        }
      }

      foreach ($addon->settings as $key => &$setting) {

        if (isset($setting->md)) {
          $md = isset($setting->md) ? $setting->md : "";
          $sm = isset($setting->sm) ? $setting->sm : "";
          $xs = isset($setting->xs) ? $setting->xs : "";
          $setting = $md;
          $addon->settings->{$key . '_sm'} = $sm;
          $addon->settings->{$key . '_xs'} = $xs;
        }

        if(isset($addon_options[$key]['selector'])) {
          $addon_selector = $addon_options[$key]['selector'];
          if(isset($addon->settings->{$key}) && !empty($addon->settings->{$key})) {
            $selector_value = $addon->settings->{$key};
            $addon->settings->{$key . '_selector'} = str_replace('{{ VALUE }}', $selector_value, $addon_selector);
          }
        }

        // Repeatable
        if( (!isset($addon->type) || $addon->type !== 'inner_row') &&  (($key == 'sp_'. $addon->name .'_item') || ($key == $addon->name .'_item')) ) {
          if(count((array) $setting)) {
            foreach ($setting as &$options) {
              foreach ($options as $key2 => &$opt) {

                if (isset($opt->md)) {
                  $md = isset($opt->md) ? $opt->md : "";
                  $sm = isset($opt->sm) ? $opt->sm : "";
                  $xs = isset($opt->xs) ? $opt->xs : "";
                  $opt = $md;
                  $options->{$key2 . '_sm'} = $sm;
                  $options->{$key2 . '_xs'} = $xs;
                }

                if(isset($addon_options[$key]['attr'][$key2]['selector'])) {
                  $addon_selector = $addon_options[$key]['attr'][$key2]['selector'];
                  if(isset($options->{$key2}) && !empty($options->{$key2})) {
                    $selector_value = $options->{$key2};
                    $options->{$key2 . '_selector'} = str_replace('{{ VALUE }}', $selector_value, $addon_selector);
                  }
                }

              }
            }
          }
        }
      }

      //sbou start
      //plugin support for addonRender
      JPluginHelper::importPlugin( 'system' );
      // Get the dispatcher and load the content plugins.
      $dispatcher = JEventDispatcher::getInstance();
      $results = $dispatcher->trigger( 'onBeforeAddonRender', array( &$addon) );
      //sbou end

      $output .= $layouts->addon_start->render(array('addon'=>$addon)); // start addon
      require_once $addon_path . '/site.php';

      $settings = array();
      if(isset($addon->settings->{'sp_' . $addon->name. '_item'}) && count((array) $addon->settings->{'sp_' . $addon->name. '_item'})) {
        $settings = $addon->settings->{'sp_' . $addon->name. '_item'};
      } else if(isset($addon->settings->{$addon->name. '_item'}) && count((array) $addon->settings->{$addon->name. '_item'})) {
        $settings = $addon->settings->{$addon->name. '_item'};
      }

      if(count((array) $settings)) {
        foreach ($settings as $key => &$item) {
          if (isset($item->content) && is_array($item->content)) {
            $newConetnt = '';
            foreach ($item->content as $contentAddon) {

              // Addon Visibility and ACL
              if ( isset($addon->visibility) && !$addon->visibility ) {
                continue;
              }

              // ACL
              $access = self::checkAddonACL($contentAddon);
              if(!$access) {
                continue;
              } // End ACL

              $newConetnt .= self::getAddonHtmlView($contentAddon, $layouts, $pageName);
            }
            $item->content = $newConetnt;
          }
        }
      }

      if ( class_exists( $class_name ) ) {
        $addon_obj  = new $class_name($addon);  // initialize addon class
        $output .= $addon_obj->render();

        // Scripts
        if ( method_exists( $class_name, 'scripts' ) ) {
          $scripts = $addon_obj->scripts();
          if(count((array) $scripts)) {
            foreach ($scripts as $key => $script) {
              $doc->addScript($script);
            }
          }
        }

        // JS
        if (method_exists($class_name, 'js')) {
          $doc->addScriptDeclaration($addon_obj->js());
        }

        // Stylesheets
        if ( method_exists( $class_name, 'stylesheets' ) ) {
          $stylesheets = $addon_obj->stylesheets();
          if(count((array) $stylesheets)) {
            foreach ($stylesheets as $key => $stylesheet) {
              $doc->addStyleSheet($stylesheet);
            }
          }
        }

        $addon_css = $layouts->addon_css->render( array( 'addon' => $addon ) );
        if($pageName == 'module') {
          $output .= '<style type="text/css">'. $addon_css .'</style>';
        } else {
          array_push( self::$css_content, $addon_css );
        }

        // css
        if ( method_exists( $class_name, 'css' ) ) {
          if($pageName == 'module') {
            $output .= '<style type="text/css">'. $addon_obj->css() .'</style>';
          } else {
            array_push( self::$css_content, $addon_obj->css() );
          }
        }

      } else {
        $output .= htmlspecialchars_decode( AddonParser::spDoAddon( AddonParser::generateShortcode($addon) ) );
      }
      $output .= $layouts->addon_end->render(); // end addon
    }

    return $output;
  }

  public static function minifyCss($css_code){
    // Remove comments
    $css_code = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $css_code);
    
    // Remove space after colons
    $css_code = str_replace(': ', ':', $css_code);

    // Remove whitespace
    $css_code = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $css_code);

    // Remove Empty Selectors without any properties
    $css_code = preg_replace('/(?:(?:[^\r\n{}]+)\s?{[\s]*})/', '', $css_code);

    // Remove Empty Media Selectors without any properties or selector
    $css_code = preg_replace('/@media\s?\((?:[^\r\n,{}]+)\s?{[\s]*}/', '', $css_code);

    return $css_code;
  }

  public static function generateShortcode($addon){

    if (!empty($addon->settings)) {
      $addon->settings->dynamicId = $addon->id;
      $ops = AddonParser::generateShortcodeOps($addon->settings);
    }

    $output = '[sp_'.$addon->name;
    if (isset($ops['default'])) {
      $output .= $ops['default'];
    }
    $output .= ']';
    if (isset($ops['repeat'])) {
      $output .= $ops['repeat'];
    }
    $output .= '[/sp_'.$addon->name.']';

    return $output;
  }

  public static function generateShortcodeOps( $ops ) {
    $default = '';
    $repeat  = '';

    foreach ( $ops as $key => $val ) {
      if ( !is_array($val) ) {
        $default .= ' '.$key.'="'.htmlspecialchars($val).'"';
      }
      else
      {
        $temp = '';
        foreach ( $val as $innerKey => $innerVal ) {
          $temp .= '['.$key;
          foreach ( $innerVal as $inner_key => $inner_val) {
            $temp .= ' '. $inner_key .'="'.htmlspecialchars( $inner_val ).'"';
          }
          $temp .= '][/' . $key . ']';
        }
        $repeat .= $temp;
      }
    }

    if ( $default ) $result['default'] = $default;
    if ( $repeat ) $result['repeat'] = $repeat;

    return $result;
  }


  // Get list of plugin addons
  private static function getPluginsAddons() {
    $path = JPATH_PLUGINS . '/sppagebuilder';
    if(!JFolder::exists($path)) return;

    $plugins = JFolder::folders($path);
    if(!count((array) $plugins)) return;

    $elements = array();
    foreach ($plugins as $plugin) {
      if(JPluginHelper::isEnabled('sppagebuilder', $plugin)) {
        $addons_path = $path . '/' . $plugin . '/addons';
        if(JFolder::exists($addons_path)) {
          $addons = JFolder::folders($addons_path);
          foreach ($addons as $addon) {
            $path = $addons_path . '/' . $addon;
            if(JFile::exists($path . '/site.php')) {
              $elements[$addon] = $path;
            }
          }
        }
      }
    }

    return $elements;
  }

  private static function getTemplateName() {
    $db = JFactory::getDbo();
    $query = $db->getQuery(true);
    $query->select($db->quoteName(array('template')));
    $query->from($db->quoteName('#__template_styles'));
    $query->where($db->quoteName('client_id') . ' = 0');
    $query->where($db->quoteName('home') . ' = 1');
    $db->setQuery($query);

    return $db->loadObject()->template;
  }

  public static function convertCssArrayToString($cssArray = array()){
    $cssString = '';
    if(count((array) $cssArray) > 0){
      foreach($cssArray as $cssItem ){
        $cssString .= $cssItem;
      }
    }

    return $cssString;
  }

  public static function checkAddonACL($addon){
    $access = true;
    if(isset($addon->settings->acl) && $addon->settings->acl ) {
      $access_list = $addon->settings->acl;
      $access = false;
      foreach ($access_list as $acl) {
        if(in_array($acl, self::$authorised)) {
          $access = true;
        }
      }
      unset($addon->settings->acl);
    }

    return $access;
  }
}

function spAddonAtts( $pairs, $atts, $shortcode = '' ) {
  $atts = (array)$atts;
  $out = array();
  foreach($pairs as $name => $default) {
    if ( array_key_exists($name, $atts) )
    $out[$name] = $atts[$name];
    else
    $out[$name] = $default;
  }

  return $out;
}

AddonParser::getAddons();