<?php

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

function cmp_team_pts($i1, $i2)
{
  if ($i1->get_pts() == $i2->get_pts()){
    return 0;
  }
  else{
    return ($i1->get_pts() < $i2->get_pts()) ? 1 : -1;
  }
}

class Team
{
  var $id = null;
  var $team_name;
  var $key_hash;
  var $auth_level;
  var $slogan;
  var $members = array();
  var $points = null;

  // Constructor
  function Team ($id=null)
  {
    if (!empty($id))
    {
      $db = new BDD();
      $res = $db->unique_query("SELECT `id`, `team_name`, `key_hash`, `slogan`, `auth_level`
              			FROM teams WHERE id = ".intval($id)) or die($db->erreur());

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

  // Class methods
  function update()
  {
    $key_hash = $this->key_hash;
    $auth_level = intval($this->auth_level);
    $slogan = $this->slogan;
    $team_name = $this->team_name;

    $db = new BDD();
    $db->escape($key_hash);
    $db->escape($slogan);
    $db->escape($team_name);

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

    return ($aff == 1);
  }

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

  function get_slogan() {
    return $this->slogan;
  }

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

  function get_auth_level() {
    return $this->auth_level;
  }

  function get_members()
  {
    if(count($this->members) == 0)
    {
      $db = new BDD();

      $res = $db->query("SELECT `id` FROM team_members
			 WHERE id_team = ".intval($this->id));

      $db->deconnexion();

      foreach($res as $member)
	$this->members[] = new Member($member["id"], $this);
    }

    return $this->members;
  }

  function get_pts()
  {
    if(!isset($this->points))
    {
      $db = new BDD();

      $res = $db->unique_query("SELECT E.id, S.id_team, SUM(E.points) as sum_points
			        FROM exercices E
			        LEFT OUTER JOIN solved S ON E.id = S.id_exercice
			        WHERE S.id_team = ".$this->id."
			        GROUP BY S.id_team");

      $db->deconnexion();

      if (!empty($res))
	$this->points = $res['sum_points'];
      else
	$this->points = 0;
    }

    return $this->points;
  }

  function get_group_ids()
  {
    $db = new BDD();

    $res = $db->query("SELECT `id` FROM `users`");
    $db->deconnexion();

    return $res['id'];
  }

  function get_rank()
  {
    $teams = Team::get_top();
    for ($i = 0; $i < 10; $i++){
      $tid = $teams[$i]->get_id();
      if ($tid == $this->id)
        return $i;
    }

    return 0;
  }

  function get_nb_res_exercises_by_theme($id_theme)
  {
    $db = new BDD();
    $res = $db->unique_query("SELECT E.id_theme AS theme, count(S.id) AS solved
                              FROM solved S
                              RIGHT OUTER JOIN exercices E ON E.id = S.id_exercice
                              AND S.id_team = ".$this->id."
                              AND E.id_theme = ".$id_theme);
    $db->deconnexion();

    return $res['solved'];
  }

  function get_solved_exercices($id_theme=-1)
  {
    if ($id_theme != -1)
    {
      $db = new BDD();
      $ids = $db->query("SELECT `id_theme`, `id_exercice`
                         FROM solved S
                         LEFT OUTER JOIN exercices E ON S.id_exercice = E.id
                         WHERE id_team =".$this->id." AND id_theme =".$id_theme);
      $db->deconnexion();

      $array = array();
      $i = 0;
      if ($ids)
      {
        foreach ($ids as $id){
          $array[] = new Exercice($id['id_exercice']);
        }
      }

      return $array;
    }
    return NULL;
  }

  function authenticate($certificate)
  {
    //TODO
  }

  // Static methods
  public static function get_teams()
  {
    $db = new BDD();
    $ids = $db->query("SELECT `id` FROM `teams`");
    $db->deconnexion();

    $array = array();
    if ($ids)
      foreach ($ids as $id)
	$array[] = new Team($id['id']);

    return $array;
  }

  public static function get_top($nb=0)
  {
    $teams = Team::get_teams();

    usort($teams, "cmp_team_pts");

    if ($nb != 0)
      $teams = array_slice($teams, 0, $nb);

    return $teams;
  }

  public static function get_nb_teams()
  {
    $db = new BDD();
    $res = $db->unique_query("SELECT COUNT(id) as count_teams FROM teams");
    $db->deconnexion();

    return $res['count_teams'];
  }

  public static function first_to_solve_exercice($id_exercice)
  {
    $db = new BDD();
    $res = $db->unique_query("SELECT t3.team_name as result
			      FROM solved AS t1
			      INNER JOIN (
				SELECT MIN(s.time) AS minTime
				FROM solved AS s
				WHERE s.id_exercice = ".$id_exercice."
				) AS t2
			      INNER JOIN teams AS t3 ON t1.id_team = t3.id
			      WHERE t1.time = t2.minTime");
    $db->deconnexion();

    return $res['result'];
  }
}