botsArena/src/functions.php

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PHP
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<?php
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function get_arenas_list(){
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include (__DIR__."/arenas_lists.php");
return $arenas;
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}
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function get_Bots_Array($arena,$activeOnly=true){
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global $lnMysql;
//$bots[]=array("name" => $name, "url" =>$url);
if($activeOnly){
$addClause=" AND active='1'";
}else{
$addClause="";
}
$rs=mysqli_query($lnMysql,
"SELECT id,name,url,description FROM bots WHERE game='".mysqli_real_escape_string($lnMysql,$arena)."'".$addClause);
$bots=array();
while($r=mysqli_fetch_row($rs)){
$bots[]=array(
'id' => $r[0],
'name'=> $r[1],
'url' => $r[2],
'description' => $r[3]
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);
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}
return $bots;
}
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function rand_str($length = 32, $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890'){
$chars_length = (strlen($chars) - 1);
$string = $chars{rand(0, $chars_length)};
for ($i = 1; $i < $length; $i = strlen($string)){
$r = $chars{rand(0, $chars_length)};
if ($r != $string{$i - 1}) $string .= $r;
}
return $string;
}
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function xd_check_input($id=1){
/*
*On génére un hash aléatoire qui sera
*ajouté aux formulaires, afin d'ajouter
*une vérification supplémentaire
*lors du traitement de ce dernier
*/
/*
* le parametre $id permet de selectionner le type de retour
* 0=> un input type hidden sans id
* 1=> un input type hidden avec id
* 2=> juste la valeur
*/
if(!isset($_SESSION['xd_check'])){
//le générer
$_SESSION['xd_check']=rand_str(25);
}
switch($id){
case 0:
return "<input type=\"hidden\" name=\"xd_check\" value=\"".$_SESSION['xd_check']."\"/>";
break;
case 1:
return "<input type=\"hidden\" name=\"xd_check\" id=\"xd_check\" value=\"".$_SESSION['xd_check']."\"/>";
break;
case 2:
return $_SESSION['xd_check'];
break;
default:
return "<input type=\"hidden\" name=\"xd_check\" id=\"xd_check\" value=\"".$_SESSION['xd_check']."\"/>";
break;
}
}
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function get_language_array(){
/*
* Choisir la langue de l'utilisateur
* en priorisant parametre GET, cookie, info du navigateur
* Retourner l'array contenant les bonnes traductions
*/
$langsAvailable=array('fr','en');
$language="";
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if( isset($_GET['lang']) ){
$language = $_GET['lang'];
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setcookie( 'lang', $language, time() + 60*60*24*30 );
}elseif( isset($_COOKIE['lang']) ){
$language=$_COOKIE['lang'];
}else{
if(in_array(substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2),$langsAvailable)){
$language=substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
}
}
if(!in_array($language,$langsAvailable)){
$language="en";
}
include (__DIR__."/../lang/".$language.".php");
return $lang;
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}
function error($code,$message){
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switch($code){
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case 404:
header("HTTP/1.0 404 Not Found");
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echo '<!DOCTYPE html><html lang="fr"><head><meta charset="UTF-8" /><title>Page Not found</title></head><body><p>'.$message.'</p>
<pre>
_ _ ___ _ _
| || | / _ \| || |
| || |_| | | | || |_
|__ _| | | |__ _|
| | | |_| | | |
|_| \___/ |_|
</pre><p><a href="/">Go to home page</a></p></body></html>';
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die;
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case 400:
header ("HTTP/1.0 400 Bad Request");
echo '<!DOCTYPE html><html lang="fr"><head><meta charset="UTF-8" /><title>Bad request</title></head><body><p>'.$message.'</p></body></html>';
die;
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case 500:
header ("HTTP/1.0 500 Internal Server Error");
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echo '<!DOCTYPE html><html lang="fr"><head><meta charset="UTF-8" /><title>Internal Server Error</title></head><body><p>'.$message.'</p></body></html>';
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die;
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default:
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die;
break;
}
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}
function conn_bdd(){
require (__DIR__."/config.php");
if (!$linkMysql=mysqli_connect($mysqlParams['host'], $mysqlParams['user'], $mysqlParams['pass'])) {
error(500,'database connexion failed');
die;
}
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mysqli_select_db($linkMysql,$mysqlParams['database']);
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mysqli_set_charset($linkMysql, 'utf8');
return $linkMysql; //does PHP can do that?
}
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function get_battles_history($game){
global $lnMysql;
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$game=substr($game,0,8); //limit 8 char for limitting mysql index size
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$rs=mysqli_query($lnMysql,
" SELECT
player1.name,
player2.name,
arena_history.player1_winsCount,
arena_history.player2_winsCount,
arena_history.nulCount
FROM
bots as player1,
bots as player2,
arena_history
WHERE
player1.id=arena_history.player1_id
AND player2.id=arena_history.player2_id
AND arena_history.game='".mysqli_real_escape_string($lnMysql,$game)."';"
);
$results=array();
while($r=mysqli_fetch_row($rs)){
$results[]= array(
'bot1' => $r[0],
'bot2' => $r[1],
'player1Wins' => $r[2],
'player2Wins' => $r[3],
'draws' => $r[4]
);
}
return $results;
}
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function ELO_get_podium($arena){
global $lnMysql;
$podium=array();
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$rs=mysqli_query($lnMysql,"SELECT id,name,description,ELO FROM bots WHERE game='".substr($arena,0,10)."' AND active='1' ORDER BY ELO DESC, name");
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while($r = mysqli_fetch_row($rs)){
$podium[]=array(
'id' => $r[0],
'name' => $r[1],
'description' => $r[2],
'ELO' => $r[3]
);
}
return $podium;
}
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function ELO_get_k($elo){
if ($elo < 1000){
return 80;
}
if ($elo < 2000){
return 50;
}
if ($elo <= 2400){
return 30;
}
return 20;
}
function ELO_get_new_ranks($elo1,$elo2,$score){
/*
* return an array containing new ELO scores after a battle
* $score : 0 player 2 won
* 0.5 draws
* 1 player 1 won
*/
//good luck for understanding it
//(see https://blog.antoine-augusti.fr/2012/06/maths-et-code-le-classement-elo/)
return array(
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$elo1 + ELO_get_k($elo1) * ($score - (1/ (1 + pow(10,(($elo2 - $elo1) / 400))))),
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$elo2 + ELO_get_k($elo2) * (1 - $score - (1/ (1 + pow(10,(($elo1 - $elo2) / 400)))))
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);
}
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function save_battle($game,$bot1,$bot2,$resultat){
//resultat: 0 match nul, 1 bot1 gagne 2 bot 2 gagne
global $lnMysql;
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$game=substr($game,0,8); //limit 8 char for limitting mysql index size
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//chercher les id de bot 1 et bot2
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$rs=mysqli_query($lnMysql,"SELECT name,id,ELO FROM bots
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WHERE name='".mysqli_real_escape_string($lnMysql,$bot1)."'
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OR name='".mysqli_real_escape_string($lnMysql,$bot2)."'");
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while($r=mysqli_fetch_row($rs)){
$bots[$r[0]]=$r[1];
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$actualELO[$r[0]]=$r[2];
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}
if((!isset($bots[$bot1])) OR (!isset($bots[$bot2]))){
error (500,"database corrupt");
die;
}
switch($resultat){
case 0:
$field="nulCount";
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$eloScore = 0.5;
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break;
case 1:
$field="player1_winsCount";
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$eloScore = 1;
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break;
case 2:
$field="player2_winsCount";
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$eloScore = 0;
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break;
default:
error (500,"something impossible has happened");
break;
}
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$newRanks = ELO_get_new_ranks($actualELO[$bot1],$actualELO[$bot2],$eloScore);
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mysqli_multi_query($lnMysql,
"
UPDATE bots
SET ELO='".$newRanks[0]."'
WHERE id='".$bots[$bot1]."';
UPDATE bots
SET ELO='".$newRanks[1]."'
WHERE id='".$bots[$bot2]."';
INSERT INTO arena_history(game,player1_id,player2_id,".$field.") VALUES
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('".mysqli_real_escape_string($lnMysql,$game)."',
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'".$bots[$bot1]."',
'".$bots[$bot2]."',
'1')
ON DUPLICATE KEY UPDATE ".$field." = ".$field." + 1;");
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}
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function get_unique_id(){
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//increment the number
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$fp = fopen(__DIR__.'/../countBattles.txt', 'c+');
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flock($fp, LOCK_EX);
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$count = (int)fread($fp, filesize(__DIR__.'/../countBattles.txt'));
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ftruncate($fp, 0);
fseek($fp, 0);
fwrite($fp, $count + 1);
flock($fp, LOCK_UN);
fclose($fp);
return $count;
}
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function get_default_aside_content($currentArena){
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global $lang;
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$asideSectionContent = '<h2>infos:</h2><p>'.$lang['DEV-YOUR-OWN-BOT'].'<br/> <a href="/'.$currentArena.'/doc">'.$lang['DOC_SPECS_LINKS'].'</a></p>
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<h2>Scores</h2>';
$podium=ELO_get_podium($currentArena);
$count=0;
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$asideSectionContent.= '<ul class="podium">';
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foreach($podium as $sc){
$count++;
switch($count){
case 1:
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$img = '<img src="/imgs/Gold_Medal.svg" alt="Gold_Medal.svg"/>';
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break;
case 2:
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$img = '<img src="/imgs/Silver_Medal.svg" alt="Silver_Medal.svg"/>';
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break;
case 3:
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$img = '<img src="/imgs/Bronze_Medal.svg" alt="Bronze_Medal.svg"/>';
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break;
default:
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$img = '<img src="/imgs/Emoji_u1f4a9.svg" alt="caca"/>';
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break;
}
$asideSectionContent.='<li>'.$img.'&nbsp;<a href="/p/aboutBot/'.urlencode(htmlentities(($sc['name']))).'">'.htmlentities($sc['name']).'</a> ELO rank: '.$sc['ELO'].'</li>';
}
$asideSectionContent.='</ul><p><a href="/'.$currentArena.'/scores">Détail des matchs &gt;&gt;</a></p>';
return $asideSectionContent;
}
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function does_arena_exist($string,$arenasArr){
foreach($arenasArr as $arena){
if($string == $arena['id']){
return true;
}
}
return false;
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}
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function get_IA_Response($iaUrl,$postParams){
// send params JSON as body
// return query detail on an array
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$data_string = json_encode($postParams);
$ch = curl_init($iaUrl);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-Type: application/json',
'Content-Length: ' . strlen($data_string))
);
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//$httpCode = curl_getinfo($ch)['http_code'];
$output= curl_exec($ch);
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curl_close($ch);
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if(! $arr = json_decode($output,TRUE)){
$arr=array();
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}
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return array(
'messageSend' => $data_string,
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'httpStatus' => curl_getinfo($ch)['http_code'],
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'response' => $output,
'responseArr' => $arr
);
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}