<?php

function tc_mob_iui_menu( $name, $subkey = null )
{
  $tree = menu_tree_page_data( $name );

  if ( $subkey  ) {
    $subkey = str_replace( '-', ' ', $subkey );
    $subtree = _tc_mob_subtree( $tree, $subkey );

    if ( $subtree ) {
      $html_array = _tc_mob_iui_menu_html($name, $subtree, true);
    }
    else {
      header('Location: /404');
      exit;
    }
  }
  else {
    $html_array = _tc_mob_iui_menu_html( $name, $tree, true );
  }

  return implode( '', $html_array );
}

function _tc_mob_subtree( $tree, $search_subkey )
{
  if ( isset( $tree[$search_subkey]['below'] ) ) {
    return $tree[$search_subkey]['below'];
  }

  foreach ( $tree as $subkey_a => $value ) {
    if ( isset( $value['below'] )) {
      $subtree = _tc_mob_subtree($value['below'], $search_subkey);

      if ( $subtree ) {
        return $subtree;
      }
    }
  }

  return null;
}

function _tc_mob_iui_menu_html( $menu_id, array $data, $selected, array &$html = array() )
{
  $items = '';

  foreach ( $data as $key => $value ) {
//    $item_id = strtolower( $key );
//    $item_id = preg_replace( '/^\d+ /', '', $item_id );
//    $item_id = preg_replace( '/\s+/', '-', $item_id );
    $item_id = str_replace( ' ', '-', $key );

    $title = $value['link']['title'];
    $target = '_self';

    if ( $value['below'] ) {
      $href = '/mobile/menu?item='.$item_id;
    }
    else {
      $href = url( $value['link']['link_path'] );
//      $target = '_self';
    }

    $items .= "<li><a href=\"$href\" target=\"$target\">$title</a></li>\n";
  }

  if ( $selected ) {
    $menu = "<ul id=\"$menu_id\" selected=\"true\">\n$items</ul>\n";
  }
  else {
    $menu = "<ul id=\"$menu_id\">\n$items</ul>\n";
  }

  array_unshift( $html, $menu );

  return $html;
}