<?php

function rvac_get_conf()
{
  global $conf;
  if (is_array($conf['rvac_opts']))
    return $conf['rvac_opts'];
  $conf['rvac_opts'] = unserialize($conf['rvac_opts']);
  return $conf['rvac_opts'];
}

function rvac_save_conf($cnf)
{
  global $conf;
  $conf['rvac_opts'] = $cnf;
  conf_update_param('rvac_opts', addslashes(serialize($conf['rvac_opts'])) );
}

function rvac_get_url_roots()
{
  $roots = array(
    'r' => get_root_url()
  );

  $url = make_index_url( array('tags'=>array( array('id'=>123,'name'=>123,'url_name'=>123))) );
  $url = substr($url, 0, strpos($url, '123'));
  $roots['t'] = $url;

  $url = make_index_url( array('category'=>array('id'=>123,'name'=>123,'permalink'=>123)) );
  $url = substr($url, 0, strpos($url, '123'));
  $roots['a'] = $url;
  
  return $roots;
}


function rvac_normalize($q)
{
  $q = str_replace('&', ' ', $q);
  $q = str_replace('.', ' ', $q);
  $q = str_replace(',', ' ', $q);
  $q = str_replace('-', ' ', $q);
  $q = transliterate($q);
  for($i=0; $i<3; $i++)
    $q = str_replace('  ', ' ', $q);
  return $q;
}

function rvac_get_elem($item, $key)
{
  $l = $item['names'][$key];
  $q = $item['q_names'][$key];
  $ret = array(
    'label' => $l,
    'value' => $item['url'],
    );
  if ($q != strtolower($l))
    $ret['q'] = $q;
	if ($item['counter'] > 0)
		$ret['w'] = $item['counter'];
  return $ret;
}

function rvac_get_index()
{
  global $user;

  $rvac_conf = rvac_get_conf();
  $root_url = get_root_url();
  $items = array();

  $roots = rvac_get_url_roots();


  $query = 'SELECT id,name FROM '.TAGS_TABLE;
  if ( !empty($rvac_conf['excluded_tags']) )
    $query .= ' WHERE id NOT IN ('.implode(',',$rvac_conf['excluded_tags']).')';
  $tag_names = simple_hash_from_query($query, 'id','name');

  $url_len = strlen( $roots['t'] );
  foreach( get_available_tags() as $row)
  {
    if (!isset($tag_names[$row['id']])) continue;
    $row['type'] = 't';
    $row['url'] = '$t/' . substr( make_index_url( array('tags'=>array($row)) ), $url_len);
    $row['name'] = $tag_names[ $row['id'] ];
    $items[] = $row;
  }


  $query = 'SELECT id,name,permalink,nb_images AS counter
  FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_CACHE_CATEGORIES_TABLE.'
  ON id = cat_id AND user_id = '.$user['id'];
  if ( !empty($rvac_conf['excluded_albums']) )
    $query .= ' WHERE id NOT IN ('.implode(',',$rvac_conf['excluded_albums']).')';

  $url_len = strlen( $roots['a'] );

  $result = pwg_query($query);
  while ($row = pwg_db_fetch_assoc($result))
  {
    $row['type'] = 'a';
    $row['url'] = '$a/' . substr( make_index_url( array('category'=>$row) ), $url_len);
    $items[] = $row;
  }

  $query = 'SELECT name,counter,url FROM '.RVAC_SUGGESTIONS;
  $result = pwg_query($query);
  while ($row = pwg_db_fetch_assoc($result))
  {
    $row['type'] = 's';
    if (empty($row['url']))
      $row['url'] = -1; // special use in js to submit form (cannot put 0 because jquery ui tests often item.value)
    $items[] = $row;
  }

  array_walk($items, function(&$obj) {
    $alt_names = trigger_event('get_tag_alt_names', array(), $obj['name']);

    if (empty($alt_names))
      $alt_names['default'] = $obj['name'];
    else
    {
      if (!isset($alt_names['default']) && isset($alt_names[0]))
      {
        $alt_names['default'] = $alt_names[0];
        unset($alt_names[0]);
      }
    }

    $obj['names'] = $alt_names;
    if ('s' !== $obj['type'])
    {
      $obj['q_names'] = $alt_names;
      foreach ($obj['q_names'] as &$q)
      {
        $q = rvac_normalize($q);
      }
    }
    else
    {
      foreach ($obj['names'] as $l => &$name)
      {
        $pos = strpos($name, '\\');
        if ($pos === false)
        {
          $q = rvac_normalize($name);
        }
        else
        {
          $q = substr($name, 0, $pos);
          if (-1 === $obj['url'] && 'default'==$l)
          {
            $obj['url'] = 'q='.$q;
          }
          $q = rvac_normalize($q);
          $name = substr_replace($name, '', $pos, 1);
        }
        $obj['q_names'][$l] = $q;
      }
    }

  });

  $type_order = array_flip( array('t','a','s') );
  usort($items, function($a, $b) use($type_order) {
    $d = $a['counter']-$b['counter'];
    if ($d) return -$d;
    $d = $type_order[$a['type']] - $type_order[$b['type']];
    if ($d) return $d;
    return strcmp($a['q_names']['default'],$b['q_names']['default']);
  });

  //var_export($items);
  $res = array();
  $res_alt = array();
  $lang = substr($user['language'],0,2);
  array_walk($items, function(&$obj) use($lang, &$res, &$res_alt) {
    $key = $lang;
    if (empty($obj['q_names'][$key]))
      $key = 'default';
    if (!empty($obj['q_names'][$key]))
      $res[] = rvac_get_elem($obj, $key);
    else
      $key = null;
    if ($key !== null) {
      foreach( array_keys($obj['q_names']) as $k) {
        if ($k==$key) continue;
        if (strncmp($obj['q_names'][$key],$obj['q_names'][$k],4)==0) continue;
        $res_alt[] = rvac_get_elem($obj, $k);
      }
    }
    else {
      foreach( $obj['q_names'] as $k => $q)
      {
        if (!empty($q))
          $res_alt[] = rvac_get_elem($obj, $k);
      }
    }
  });

  return array(
      'total' => count($res) + count($res_alt),
      'altLangIndex' => count($res),
      'src' => array_merge($res, $res_alt),
      'roots' => $roots
    );
}
?>