<?php

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

class Exercice
{
  var $id=null;
  var $theme;
  var $require;
  var $level;
  var $points;
  var $statement;
  var $files;
  var $keys;

  function Exercice($id=null)
  {

    if (!empty($id))
    {
      $db = new BDD();
      $res = $db->unique_query("SELECT `id`, `id_theme`, `require`, `level`, `points`, `statement`
        						FROM exercices
        						WHERE id=" . intval($id));

      if (!empty($res))
      {
	$this->id = intval($res['id']);
	$this->theme = new Theme($res['id_theme']);
	$this->require = $res['require'];
	$this->level = $res['level'];
	$this->points = $res['points'];
	$this->statement = $res['statement'];
	$this->files = $db->query("SELECT `id`, `path`, `name`
				   FROM exercice_files
        			   WHERE id_exercice = $id");
	$this->keys = $db->query("SELECT `id`, `format`, `value`
        			  FROM exercice_keys
        			  WHERE id_exercice = $id");
      }
      $db->deconnexion();
    }
  }

  function update($create)
  {
    $id = $this->id;
    $theme = intval($this->theme->get_id());
    $require = $this->require;
    $level = intval($this->level);
    $points = intval($this->points);
    $statement = $this->statement;
    $files = $this->files;
    $keys = $this->keys;

    $db = new BDD();
    $db->escape($id);
    $db->escape($theme);
    $db->escape($require);
    $db->escape($statement);

    if ($create)
    {
      $db->query("INSERT INTO exercices
     	  	  VALUES ('".$id."', '".$theme."', '".$require."', '".$level."', '".$points."','".$statement."');");
    }
    else
    {
      $db->query("UPDATE exercices
     	  	  SET `theme` = '".$theme."', `require` = '".$require."', `level` = '".$level."', `point` = '".$point."', `statement` = '".$statement."'
     	  	  WHERE id = ".$id);

      $aff = $db->affected();
    }

    foreach ($this->keys as $k => $key)
    {
      $format = $key['format'];
      $value = $key['value'];
      if (isset($key['id']))
	$kid = $key['id'];
      else
	$kid = NULL;

      $db->escape($format);
      $db->escape($value);
      $db->escape($kid);

      if (empty($kid))
      {
	$db->query("INSERT INTO exercice_keys
		    VALUES (NULL, '".$this->id."', '".$format."', UNHEX('".strhex($value)."'))");

	$this->keys[$k]['id'] = $db->insert_id();
      }
      else
      {
	$db->query("UPDATE exercice_keys
     	  	    SET `format` = '".$format."', `value` = UNHEX('".strhex($value).")')
     	  	    WHERE id = ".$kid);
      }
    }

    foreach ($this->files as $k => $file)
    {
      $path = $file['path'];
      $name = $file['name'];
      if (isset($file['id']))
	$fid = intval($file['id']);

      $db->escape($path);
      $db->escape($name);

      if (!isset($file['id']))
      {
	$db->query("INSERT INTO exercice_files
     	  	    VALUES (NULL, '".$id."', '".$path."', '".$name."');");

	$this->files[$k]['id'] = $db->insert_id();
      }
      else
      {
	$db->query("UPDATE exercice_files
		    SET `path` = '".$path."', `name` = '".$name."'
     	  	    WHERE id = ".$fid);
      }
    }

    $db->deconnexion();

    //FIXME
    return 1;
  }

  function create()
  {
    update(true);
  }

  function add_key($format, $value)
  {
    $key = ["format" => $format, "value" => $value];
    if (isset($key))
      $this->keys[] = $key;
  }

  function add_file($path, $name)
  {
    $file = ["path" => $path, "name" => $name];
    if (isset($file))
      $this->files[] = $file;
  }
}