<?php

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

class Theme
{
  var $id = null;
  var $name;

  function Theme($id=null)
  {
    if (!empty($id))
    {
      $db = new BDD();
      $res = $db->unique_query("SELECT id, name
			        FROM themes WHERE id=" . intval($id));

      if (!empty($res))
      {
	$this->id = $res['id'];
	$this->name = $res['name'];
      }
      $db->deconnexion();
    }
  }

  function update()
  {
    $name = $this->name;

    $db = new BDD();
    $db->escape($name);

    if (empty($this->id))
    {
      $db->query("INSERT INTO themes
     	  	  VALUES (NULL, '".$name."');");
      $this->id = $db->insert_id();
      $aff = ($this->id > 0);
    }
    else
    {
      $db->query("UPDATE themes
     	  		SET name = '".$name."'
     	  		WHERE id = ".intval($this->id));
      $aff = $db->affected();
    }
    $db->deconnexion();

    return ($aff == 1);
  }

  function get_name()
  {
    return $this->name;
  }

  function get_id()
  {
    return $this->id;
  }

  function get_nbExercices()
  {
    $db = new BDD();
    $res = $db->unique_query("SELECT count( id ) as nb_exercices FROM exercices
                        WHERE id_theme = ".$this->id."
                        GROUP BY id_theme");  	  	
    $db->deconnexion();

    return $res['nb_exercices'];
  }

  function add_exercice($exercice)
  {
    if (isset($exercice))
    {
      $exercice->theme = $this;
      return $exercice->update(true);
    }
    return false;
  }

  public static function get_themes()
  {
    $db = new BDD();
    $ids = $db->query("SELECT `id` FROM `themes`");
    $db->deconnexion();

    $array = array();
    foreach ($ids as $id){
      $array[] = new Theme($id['id']);
      
    }

    return $array;
  }
}