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<?php

//include('database.php');
	//DB_connexion(); 
	//error_reporting(0);
	header( 'content-type: text/html; charset=utf-8' );

function incr_games($games)
{
	$games=$games+1;
	return $games;
}

$k=800/($myPriorGames+1);
	return $k;
}

function winningexpactancy($rating,$op_rating)
{
	$we=1/(pow(10,(-($rating-$op_rating)/400))+1);
	return $we;
}

function incr_prior($prior)
{
	if ($prior<50) 
	{
		$prior=$prior+1;
	}
	return $prior;
}
	
function incr_gcount($gcount) 
{
	$gcount=$gcount+1;
	return $gcount;
}

function incr_wins($wins)
{
	$wins=$wins+1;
	return $wins;
}

function incr_losses($losses)
{
	$losses=$losses+1;
	return $losses;
}

function incr_draws($draws)
{
	$draws=$draws+1;
	return $draws;
}

function calcul_classement_elo($donnees)
{
	$i = 0;
	$nb_ligne = count($donnees);
	for ($i=0; $i < $nb_ligne; $i++)
	{
				$timestamp_partie = $donnees[$i][0];
				$J1 = $donnees[$i][1];
				$J2 = $donnees[$i][2];
				$J1_score = $donnees[$i][3];
				$J2_score = $donnees[$i][4];
				
				//echo $J1 ." " .$J2 ." " .$J1_score ." " .$J2_score;
				//echo " ";

$sql_w = "select * from classement where joueur = '$J1' ";
				//echo $sql_w;
				//echo " ";
				$result = mysql_query($sql_w);
				while ($data = mysql_fetch_array($result))
				{
					$w_playerID = $data['id'];
					$w_joueur = $data['joueur'];
					$w_rating = $data['elo'];
					$w_games = $data['parties'];
					$w_prior = $data['prior'];
					$w_bonus = $data['bonus'];
					$w_oldrating = $data['oldrating'];
					$w_gcount = $data['gcount'];
					$w_wins = $data['wins'];
					$w_losses = $data['losses'];
					$w_draws = $data['draws'];
				}	
				
				$sql_b = "select * from classement where joueur = '$J2' ";
				//echo $sql_b;
				//echo " ";
				$result = mysql_query($sql_b);
				while ($data = mysql_fetch_array($result))
				{
					$b_playerID = $data['id'];
					$b_joueur = $data['joueur'];
					$b_rating = $data['elo'];
					$b_games = $data['parties'];
					$b_prior = $data['prior'];
					$b_bonus = $data['bonus'];
					$b_oldrating = $data['oldrating'];
					$b_gcount = $data['gcount'];
					$b_wins = $data['wins'];
					$b_losses = $data['losses'];
					$b_draws = $data['draws'];
				}	
				
				if($J1_score==1) 
				{
					if($w_prior<=8) 
					{
						$new_w_rating=specialrating($w_prior,$w_rating,$b_rating,1);
					}
					if($w_prior>8)
					{
						$new_w_rating=standardrating($w_prior,$w_rating,$b_rating,1);
					}
					if($b_prior<=8)
					{
						$new_b_rating=specialrating($b_prior,$b_rating,$w_rating,0);
					}
					if($b_prior>8)
					{
						$new_b_rating=standardrating($b_prior,$b_rating,$w_rating,0);
					}
				}
				
				if( $J1_score == "0.5" && $J2_score == "0.5" ) 
				{
					if($w_prior<=8)
					{
						$new_w_rating=specialrating($w_prior,$w_rating,$b_rating,.5);
					}
					if($w_prior>8) 
					{
						$new_w_rating=standardrating($w_prior,$w_rating,$b_rating,.5);
					}
					if($b_prior<=8) 
					{
						$new_b_rating=specialrating($b_prior,$b_rating,$w_rating,.5);
					}
					if($b_prior>8) 
					{
						$new_b_rating=standardrating($b_prior,$b_rating,$w_rating,.5);
					}
				}
				
				if ($J2_score==1) 
				{
					if($w_prior<=8)
					{
						$new_w_rating=specialrating($w_prior,$w_rating,$b_rating,0);
					}
					if($w_prior>8)
					{
						$new_w_rating=standardrating($w_prior,$w_rating,$b_rating,0);
					}
					if($b_prior<=8) 
					{
						$new_b_rating=specialrating($b_prior,$b_rating,$w_rating,1);
					}
					if($b_prior>8)
					{
						$new_b_rating=standardrating($b_prior,$b_rating,$w_rating,1);
					}
				}
				
				
				if($J1_score==1)
				{
					$w_wins=incr_wins($w_wins);
					$b_losses=incr_losses($b_losses);
					$partie_result = 1;
				}
				
				if($J1_score == 0.5 && $J2_score == 0.5) 
				{
					$w_draws=incr_draws($w_draws);
					$b_draws=incr_draws($b_draws);
					$partie_result = 3;
				}
				
				if($J2_score==1) 
				{
					$w_losses=incr_losses($w_losses);
					$b_wins=incr_wins($b_wins);
					$partie_result = 2;
				}

$b_gcount=incr_gcount($b_gcount);
				$w_gcount=incr_gcount($w_gcount);
				$w_prior=incr_prior($w_prior);
				$b_prior=incr_prior($b_prior);
				$w_games=incr_games($w_games);
				$b_games=incr_games($b_games);
				
				$sql_w="UPDATE classement SET `elo`=$new_w_rating, `parties`=$w_games,`prior`=$w_prior,
				`oldrating`=$w_rating,`gcount`=$w_gcount,`wins`=$w_wins,`losses`=$w_losses,`draws`=$w_draws
				WHERE `joueur`= '$J1' ";

$sql_b="UPDATE classement SET `elo`=$new_b_rating, `parties`=$b_games,`prior`=$b_prior,
				`oldrating`=$b_rating,`gcount`=$b_gcount,`wins`=$b_wins,`losses`=$b_losses,`draws`=$b_draws
				WHERE `joueur`= '$J2' "; 
	
				//echo $sql_w;
				//echo " ";
				//echo $sql_b;
				//echo " ";
				
				//	$today=time();
				
				$result1 = mysql_query($sql_w);
				$result2 = mysql_query($sql_b);
				
								
				$sql_w="INSERT INTO `evolution` (playerID,rating,date) VALUES ($w_playerID,$new_w_rating,'$timestamp_partie')";
				$sql_b="INSERT INTO `evolution` (playerID,rating,date) VALUES ($b_playerID,$new_b_rating,'$timestamp_partie')";

//echo $sql_w;
				//echo " ";
				//echo $sql_b;
				//echo " ";
				$result3 = mysql_query($sql_w);
				$result4 = mysql_query($sql_b);
				
				$sql="INSERT INTO parties (w_playerID,w_name,b_playerID,b_name,w_brating,w_arating,b_brating,b_arating,result,date) 
				VALUES ($w_playerID,'$w_joueur',$b_playerID,'$b_joueur',$w_rating,$new_w_rating,$b_rating,$new_b_rating,$partie_result,'$timestamp_partie')";
				
				$result5 = mysql_query($sql);

if (!$result1 || !$result2 || !$result3 || !$result4 || !$result5) 
				{
					//echo "Failed!";
					$erreur = true;
				}
		
		
	} /*for*/
	
}