<?php

if(!defined('ONYX')) exit;

if (!empty($_FILES["inputFile"]['tmp_name']))
{
  $doc = new DOMDocument();
  if (!$doc->load($_FILES["inputFile"]['tmp_name']))
  {
    erreur("Unable to parse given file. A XML file was expected.");
    return;
  }

  // Define thema information
  $theme = new Theme();

  $xpath = new DOMXpath($doc);
  $elements = $xpath->query("//theme/title");
  if (!is_null($elements))
  {
    foreach ($elements as $element)
    {
      if ($element->nodeName == "title")
	$theme->name = $element->nodeValue;
    }
  }

  // Insert thema into BDD
  if (!$theme->update())
  {
    erreur("Unable to add a new theme.");
    return;
  }

  $elements = $xpath->query("//theme/exercice");
  if (!is_null($elements))
  {
    foreach ($elements as $element)
    {
      $ex = new Exercice();

      $ex->id = $element->getAttribute("id");
      $ex->level = $element->getAttribute("level");
      if ($element->hasAttribute("depends"))
	$ex->require = $element->getAttribute("depends");

      foreach ($element->childNodes as $child)
      {
	if ($child->nodeName == "title")
	  $ex->title = $child->nodeValue;

	else if ($child->nodeName == "points")
	  $ex->points = intval($child->nodeValue);

	else if ($child->nodeName == "statement")
	  $ex->statement = $child->nodeValue;

	else if ($child->nodeName == "key")
	  $ex->add_key(
	    $child->hasAttribute("format")?$child->getAttribute("format"):"sha512",
	    $child->nodeValue);

	else if ($child->nodeName == "file")
	  $ex->add_file(
	    $child->getAttribute("path"),
	    $child->nodeValue,
	    $child->getAttribute("sha1"));
      }

      if (!$theme->add_exercice($ex))
	erreur("Unable to add '".$ex->id."' exercice.");
    }
  }

  erreur("XML file successfully imported.", "success");
}

return "admin/import_exercices";