<?php
if(!session_id()) {
    session_start();
}
require_once "../Facebook/autoload.php"; 
require_once "../classi/setting.php";

$fb = new Facebook\Facebook([
  'app_id' => '176568759368463',
  'app_secret' => '99625e94ce46f741ca03c832a9685c25',
  'default_graph_version' => 'v2.5'
  ]);

$helper = $fb->getRedirectLoginHelper();
$permissions = ['email']; // optional
	
try {
	if (isset($_SESSION['fb_access_token'])) {
		$accessToken = $_SESSION['fb_access_token'];
	} else {
  		$accessToken = $helper->getAccessToken();
	}
} catch(Facebook\Exceptions\FacebookResponseException $e) {
 	// When Graph returns an error
 	echo 'Graph returned an error: ' . $e->getMessage();
  	exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
 	// When validation fails or other local issues
	echo 'Facebook SDK returned an error: ' . $e->getMessage();
  	exit;
 }
if (isset($accessToken)) {
	if (isset($_SESSION['fb_access_token'])) {
		$fb->setDefaultAccessToken($_SESSION['fb_access_token']);
	} else {
		// getting short-lived access token
		$_SESSION['fb_access_token'] = (string) $accessToken;
	  	// OAuth 2.0 client handler
		$oAuth2Client = $fb->getOAuth2Client();
		// Exchanges a short-lived access token for a long-lived one
		$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['fb_access_token']);
		$_SESSION['fb_access_token'] = (string) $longLivedAccessToken;
		// setting default access token to be used in script
		$fb->setDefaultAccessToken($_SESSION['fb_access_token']);
	}
	// redirect the user back to the same page if it has "code" GET variable
	if (isset($_GET['code'])) {
		//header('Location: ./');
	}
	// getting basic info about user
	try {
		$profile_request = $fb->get('/me?fields=id,name,email,birthday,gender,hometown,last_name,first_name');
		$user = $profile_request->getGraphNode()->asArray();
	} catch(Facebook\Exceptions\FacebookResponseException $e) {
		// When Graph returns an error
		echo 'Graph returned an error: ' . $e->getMessage();
		session_destroy();
		// redirecting user back to app login page
		header("Location: ./");
		exit;
	} catch(Facebook\Exceptions\FacebookSDKException $e) {
		// When validation fails or other local issues
		echo 'Facebook SDK returned an error: ' . $e->getMessage();
		exit;
	}
	
	// printing $profile array on the screen which holds the basic info about user
	//print_r($profile);
  	// Now you can redirect to another page and use the access token from $_SESSION['fb_access_token']
	
	//controllo se l'utente è già inserito in db
	//Se no, inserisco. Se si aggiorno le sue info
	$myEmail = $user['email'];
	$myName =  $user['name'];
	$myBirthday = $user['birthday'];
	$myGender =  $user['gender'];
	$myHometown =  $user['hometown'];
	$myLastname =  $user['last_name'];
	$myFirstname =  $user['first_name'];

	$myUsr = $sqli->query("SELECT * FROM amb_richiesteprezzi WHERE email='{$myEmail}'");

	if($myUsr->num_rows>0) {
		
		$sqli->query("
			UPDATE amb_richiesteprezzi SET nome='{$myFirstname}',cognome='{$myLastname}',email='{$myEmail}',sesso='{$myGender}',nomeFb='{$myName}',citta='{$myHometown}',compleanno='{$myBirthday}' WHERE email='{$myEmail}'
		");
		
	} else {
		
		$sqli->query("
			INSERT INTO amb_richiesteprezzi SET nome='{$myFirstname}',cognome='{$myLastname}',email='{$myEmail}',sesso='{$myGender}',nomeFb='{$myName}',citta='{$myHometown}',compleanno='{$myBirthday}',dataRichiesta=NOW()
		");
		
	}

	//se sono loggato ho il token su $_SESSION['fb_access_token']

	//echo 'Name: ' . $user['name']."<br>";
	//echo 'Email: ' . $user['email'];
	// OR
	// echo 'Name: ' . $user->getName();

	$_SESSION['fb_show'] = 1;
	$_SESSION['fb_nome'] = $myFirstname;
	$_SESSION['fb_cognome'] = $myLastname;
	$_SESSION['fb_sesso'] = $myGender;
	$_SESSION['fb_name'] = $myName;
	$_SESSION['fb_email'] = $myEmail;
	
	if(isset($_SESSION['cercaTipoTop'])) {
		
		if(isset($_SESSION['page']) && $_SESSION['page']!="") {
			$gotToPage = "cerca-auto-".$_SESSION['cercaTipoTop']."-".$_SESSION['cercaMarcaTop']."-".$_SESSION['cercaSerieTop']."-".$_SESSION['cercaPrezzoTop']."-".$_SESSION['cercaTipologiaTop']."-".$_SESSION['cercaCambioAlimentazioneTop']."-".$_SESSION['cercaCilindrataTop']."-".$_SESSION['cercaKmTop']."/".$_SESSION['page'].".html";
		} else {
			$gotToPage = "cerca-auto-".$_SESSION['cercaTipoTop']."-".$_SESSION['cercaMarcaTop']."-".$_SESSION['cercaSerieTop']."-".$_SESSION['cercaPrezzoTop']."-".$_SESSION['cercaTipologiaTop']."-".$_SESSION['cercaCambioAlimentazioneTop']."-".$_SESSION['cercaCilindrataTop']."-".$_SESSION['cercaKmTop'].".html";
		}
		
	} else {	
		$gotToPage = "auto-ambrosi-nuove.html";
	}
	
	header('Location: '.BASE_URL.$gotToPage);
	
	
} else {
	
	//INSERIMENTO IN SESSIONE DEI PARAM DI RICERCA PER IL RITORNO
	//?cercaTipoTop=$1&cercaMarcaTop=$2&cercaSerieTop=$3&cercaPrezzoTop=$4&cercaTipologiaTop=$5&cercaCambioAlimentazioneTop=$6&cercaCilindrataTop=$7&cercaKmTop=$8&cPage=16
	//cerca-auto-([^/]+)-([^/]+)-([^/]+)-([^/]+)-([^/]+)-([^/]+)-([^/]+)-([^/]+)/([0-9]+).html
	if(isset($_GET['cercaTipoTop'])) $_SESSION['cercaTipoTop'];
	if(isset($_GET['cercaMarcaTop'])) $_SESSION['cercaMarcaTop'];
	if(isset($_GET['cercaSerieTop'])) $_SESSION['cercaSerieTop'];
	if(isset($_GET['cercaPrezzoTop'])) $_SESSION['cercaPrezzoTop'];
	if(isset($_GET['cercaTipologiaTop'])) $_SESSION['cercaTipologiaTop'];
	if(isset($_GET['cercaCambioAlimentazioneTop'])) $_SESSION['cercaCambioAlimentazioneTop'];
	if(isset($_GET['cercaCilindrataTop'])) $_SESSION['cercaCilindrataTop'];
	if(isset($_GET['cercaKmTop'])) $_SESSION['cercaKmTop'];
	if(isset($_GET['cPage'])) $_SESSION['cPage'];
	if(isset($_GET['page'])) $_SESSION['page'];
	
	// replace your website URL same as added in the developers.facebook.com/apps e.g. if you used http instead of https and you used non-www version or www version of your website then you must add the same here
	$loginUrl = $helper->getLoginUrl(BASE_URL.'inc/fb-connect.php', $permissions);
	//echo '<a href="' . $loginUrl . '">Log in with Facebook!</a>';
	header("Location: ".$loginUrl);
}
 
?>