<?php

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

class stuffs
{
  var $user_groups = array();
  var $modules = array();
	var $blocks = array();
	var $pos = 'begin';

  function stuffs()
  {
    $this->get_user_groups();
    $this->get_modules();
    $this->process_modules();
  }

  /* Retrieve user groups  */
  function get_user_groups()
  {
    global $user;

    $query = 'SELECT group_id FROM ' . USER_GROUP_TABLE . ' WHERE user_id = ' . $user['id'] . ';';
    $result = pwg_query($query);
    while ($row = mysql_fetch_assoc($result))
    {
      array_push($this->user_groups, $row['group_id']);
    }
  }

  /* Retrieve modules from table */
  function get_modules()
  {
    global $page, $user;

    $query = '
SELECT id, name, type, datas, groups, show_title, id_line, width
FROM ' . STUFFS_TABLE . '
WHERE users LIKE "%' . $user['status'] . '%"
';

    $script = script_basename();
    if ($script == 'index')
    {
      $query .= isset($page['category']) ?
        'AND on_cats = "true"' :
        'AND on_home = "true"' ;
    }
    elseif ($script == 'picture')
    {
      $query .= 'AND on_picture = "true"';
    }
    else return;

    $query .= '
ORDER BY pos ASC;';

    $result = pwg_query($query);

    while ($row = mysql_fetch_assoc($result))
    {
      array_push($this->modules, $row);
    }
  }

  /* Process modules */
  function process_modules()
  {
    foreach ($this->modules as $module)
    {
      if ($module['type'] == 'MainBlock')
      {
    		$this->pos = 'end';
        if (!empty($module['datas'])
          and $datas = unserialize($module['datas'])
          and $datas['hide'])
        {
          add_event_handler('loc_end_index', 'remove_main_block');
        }
    		continue;
    	}
    	if (!empty($module['groups']))
      {
    		$authorized_groups = explode(',', $module['groups']);
    		if (array_intersect($this->user_groups, $authorized_groups) == array()) continue;
    	}

    	$datas = (!empty($module['datas']) ? unserialize($module['datas']) : false);
      $block = array();

    	if ((include(STUFFS_PATH . 'modules/' . $module['type'] . '/main.inc.php')) === false) continue;

      $block['ID'] = $module['id'];
      if ($module['show_title'] == 'true')
      {
        $block['TITLE'] = trigger_event('render_stuffs_name', $module['name']);
      }
      if (is_admin())
      {
        $block['U_EDIT'] = PHPWG_ROOT_PATH.'admin.php?page=plugin&amp;section='.STUFFS_DIR.'%2Fadmin%2Fadd_module.php&amp;type='.$module['type'].'&amp;edit='.$module['id'];
      }
      $block['TEMPLATE'] = 'stuffs_'.strtolower($module['type']).'.tpl';
    	$this->set_tpl_block($block, $module);
    }
  }
  /* Set template blocks  */
	function set_tpl_block($block, $module)
	{
		if (!empty($module['id_line']))
    {
      $block['id_line'] = $module['id_line'];
      $block['given_width'] = !empty($module['width']) ? $module['width'] : '';

      if (!empty($this->blocks[$this->pos]))
      {
        $last = end($this->blocks[$this->pos]);
        $key = key($this->blocks[$this->pos]);
        $penul = prev($this->blocks[$this->pos]);

        if (isset($last['id_line']) and $last['id_line'] == $module['id_line'])
        {
          if (isset($penul['id_line']) and $penul['id_line'] == $module['id_line'])
          {
            $i = 3;
            !$block['given_width'] or $i--;
            !$last['given_width'] or $i--;
            !$penul['given_width'] or $i--;

            !$i or $default_width = intval((100 - $block['given_width'] - $last['given_width'] - $penul['given_width']) / $i);

            $penul['WIDTH'] = $penul['given_width'] ? $penul['given_width'] : $default_width;
            $block['WIDTH'] = $block['given_width'] ? $block['given_width'] : $default_width;

            $block['CLASS'] = 'right_block';
            $block['new_line'] = false;
            $block['end_line'] = false;
            $last['end_line'] = true;
            $this->blocks[$this->pos][$key-1] = $penul;
            $this->blocks[$this->pos][$key] = $block;
            $this->blocks[$this->pos][] = $last;
            return;
          }
          else
          {
            if (empty($block['given_width']) and empty($last['given_width']))
            {
              $last['WIDTH'] = 50;
            }
            elseif ($block['given_width']>0)
            {
              $last['WIDTH'] = 100 - $block['given_width'];
            }
            else
            {
              $last['WIDTH'] = $last['given_width'];
            }
            $block['CLASS'] = 'middle_block';
            $last['CLASS'] = 'left_block';
            $block['new_line'] = false;
            $block['end_line'] = true;
            $last['end_line'] = false;
            $this->blocks[$this->pos][$key] = $last;
            $this->blocks[$this->pos][] = $block;
            return;
          }
        }
      }
    }

    $block['new_line'] = true;
    $block['end_line'] = true;
    $block['CLASS'] = 'middle_block';
  	$this->blocks[$this->pos][] = $block;
	}

  static function prefilter_index_css($source, &$smarty)
  {
    $css = array(
      '<link rel="stylesheet" type="text/css" href="{$ROOT_URL}plugins/PWG_Stuffs/theme/stuffs_index.css">'
    );

    foreach ($smarty->get_template_vars('themes') as $theme)
    {
      if (file_exists(PHPWG_THEMES_PATH.$theme['id'].'/stuffs_index.css'))
      {
        array_push($css, '<link rel="stylesheet" type="text/css" href="{$ROOT_URL}themes/'.$theme['id'].'/stuffs_index.css">');
      }
    }

    $source = str_replace("\n</head>", "\n".implode( "\n", $css )."\n</head>", $source);

    return $source;
  }

  static function prefilter_picture_css($source, &$smarty)
  {
    $css = array(
      '<link rel="stylesheet" type="text/css" href="{$ROOT_URL}plugins/PWG_Stuffs/theme/stuffs_picture.css">'
    );

    foreach ($smarty->get_template_vars('themes') as $theme)
    {
      if (file_exists(PHPWG_THEMES_DIR.$theme['id'].'/stuffs_picture.css'))
      {
        array_push($css, '<link rel="stylesheet" type="text/css" href="{$ROOT_URL}themes/'.$theme['id'].'/stuffs_picture.css">');
      }
    }

    if (!empty($css))
    {
      $source = str_replace("\n</head>", "\n".implode( "\n", $css )."\n</head>", $source);
    }

    return $source;
  }
}

?>