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

include_once(PHPWG_PLUGINS_PATH.'Back2Front/functions.inc.php');

function plugin_install() 
{
  global $prefixeTable;

  /* create table for recto/verso pairs | stores original verso categories */
  pwg_query("CREATE TABLE IF NOT EXISTS `" . $prefixeTable . "image_verso` (
    `image_id` mediumint(8) unsigned NOT NULL DEFAULT '0',
    `verso_id` mediumint(8) unsigned NOT NULL DEFAULT '0',
    `categories` varchar(128) NULL,
    PRIMARY KEY (`image_id`),
    UNIQUE KEY (`verso_id`)
  ) DEFAULT CHARSET=utf8;");
  
  /* create a virtual category to store versos */
  $versos_cat = create_virtual_category('Back2Front private album');
  $versos_cat = array(
    'id' => $versos_cat['id'],
    'comment' => 'Used by Back2Front to store backsides.',
    'status'  => 'private',
    'visible' => 'false',
    'commentable' => 'false',
    );
  mass_updates(
    CATEGORIES_TABLE,
    array(
      'primary' => array('id'),
      'update' => array_diff(array_keys($versos_cat), array('id'))
      ),
    array($versos_cat)
    );
    
  /* config parameter */
  pwg_query("INSERT INTO `" . CONFIG_TABLE . "`
    VALUES ('back2front', '".$versos_cat['id'].",click,none,top,".serialize(array('default'=>null)).",1', 'Configuration for Back2Front plugin');");
}

function plugin_activate()
{
  global $conf;


  $conf['back2front'] = explode(',', $conf['back2front']);
  
  if (!isset($conf['back2front'][3])) 
  {
    $conf['back2front'][3] = 'top';
    $conf['back2front'][4] = serialize(array('default'=>null));
  }
  if (!isset($conf['back2front'][5]))
  {
    $conf['back2front'][5] = true;
  }
  
  conf_update_param('back2front', implode (',', $conf['back2front'])); 
}


function plugin_uninstall() {
  global $conf, $prefixeTable;
  
  $conf['back2front'] = explode(',',$conf['back2front']);
  
  /* versos must be restored to their original categories
   criterias :
    - verso € 'versos' cat only => restore verso to original categories
    - otherwise nothing is changed
  */

  $query = "SELECT * FROM `" . $prefixeTable . "image_verso`;";
  $images_versos = pwg_query($query);
  
  while ($item = pwg_db_fetch_assoc($images_versos))
  {
    back2front_restaure_categories($item);
  }

  pwg_query("DROP TABLE `" . $prefixeTable . "image_verso`;");
  pwg_query("DELETE FROM `" . CONFIG_TABLE . "` WHERE param = 'back2front';");
  pwg_query("DELETE FROM `" . CATEGORIES_TABLE ."`WHERE id = ".$conf['back2front'][0].";");
  
  /* rebuild categories cache */
  include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
  invalidate_user_cache(true);
}
?>