Facebook user login integration with WordPress

I am trying to use Facebook login to register users to my blog, but after users logged in their Facebook account, their account is still not created on my WordPress. Could anyone take a look and advise please. I would like to have the users been registered by taking their Facebook email and creating a random password. After he registered and automatically logged in, I plan to send the user to his account where he can update the name, add few custom user meta data, and add a short bio. The codes for the Facebook login integration with WordPress I’am using are bellow:

1- // This is the login button that goes in my index/page

<a id="FbConnect" class="join-facebook" href="#">Rejoignez-nous sur facebook</a>
2- // This goes in my functions.php

`//create facebook href button
function FbC_head(){
if( is_user_logged_in()) return;
?>
<div id=”fb-root”></div>
<script>
window.fbAsyncInit = function() {
FB.init({
appId : ‘APP_ID’, //have already registered the facebook app, so that’s not an issue
status : true,
cookie : true
});
};
(function() {
var e = document.createElement(‘script’);
e.src = document.location.protocol + ‘//connect.facebook.net/en_US/all.js’;
e.async = true;
document.getElementById(‘fb-root’).appendChild(e);
}());
</script>
<?php
}
add_action( ‘wp_head’, ‘FbC_head’ );//end

//load jquery if needed
function FbC_enqueue_scripts(){
wp_enqueue_script( ‘jquery’ );
}
//add_action( ‘wp_enqueue_scripts’, ‘FbC_enqueue_scripts’);//end

//event handler in footer
function FbC_footer(){
?>
<script>
$(‘#fbLogin’).click(function() {
FB.getLoginStatus(function(response){
if(response.status !== ‘connected’) {
//console.log(response.authResponse);
FB.login(function(fbresponse) {
//console.log(response.authResponse);
if(fbresponse.status==”connected”) {
response = fbresponse;
$(‘#fbLogin’).click();
}
}, {scope: ’email’});
}
if(!response.authResponse) {
return;
}
FB.api(‘/me’, function(resp) {
var data = {
authResp : response.authResponse,
userResp : resp
};
//console.log(data);
jQuery.ajax({
method : ‘GET’,
url : ‘<?php echo dirname( get_bloginfo(‘stylesheet_url’) ) ?>/checkFB.php?callback=?’,
data : data,
dataType : ‘jsonp’,
jsonpCallback : ‘reply’,
contentType : ‘application/json’,
success : function(resp) {
//console.log(resp);
if(resp.status == “Success”)
window.location.reload();
else
console.log(resp.errors);
},
error : function(e) {
console.log(e);
}
});
});
});
});
</script>
<?php
}
add_action( ‘wp_footer’, ‘FbC_footer’ );//end`
3- // Finally this is the function supposed to do the registration and it name according to 1- (checkFB.php)

`//don’t worry I don’t wanna show this on http://wordpress.stackexchange.com/!
require_once(‘/this_is_the_path_to_my_server_/wp-load.php’);
require_once(‘/this_is_the_path_to_my_server_/wp-config.php’);

/*
$_REQUEST is sent with 2 arrays. We will retrieve the ID and then start checking.
*/
$login = $_REQUEST[‘userResp’][‘id’];

//Check if the username exists already
$id = username_exists($login);
$errors = array();

//Case 1 : When the ID doesn’t exist.
if(!$id) {
$email = $_REQUEST[‘userResp’][’email’];
$existingID = email_exists($email);
//Case 1 confirmed : If the email also does not exist, we can proceed with registration.
if(!$existingID) {
$pass = wp_generate_password( $length=12, $include_standard_special_chars=false );
$userData = array();
$userData[‘user_login’] = $login;
$userData[‘user_email’] = $email;
$userData[‘user_password’] = $pass;
$userData[‘user_nicename’] = $_REQUEST[‘userResp’][‘first_name’] .’ ‘. $_REQUEST[‘userResp’][‘last_name’];
$userData[‘first_name’] = $_REQUEST[‘userResp’][‘first_name’];
$userData[‘last_name’] = $_REQUEST[‘userResp’][‘last_name’];
$insertStatus = wp_insert_user($userData);
if(is_wp_error($insertStatus)) {
$errors = array_merge($errors, $insertStatus->getErrorMessages());
}
else {
wp_set_auth_cookie($insertStatus, true);
}

}
//Case 2 : When the email ID the user has attached to his FB account is also registered here.
else{
$userFB = get_user_meta($existingID, ‘fbid’, true);
//if a user is already attached to the email.
if(!empty($userFB)) {
//Case 2a : Here we match the Facebook ID of the user to the facebook ID of the email ID.
if($userFB == $login)
wp_set_auth_cookie($existingID, true);
else {
array_push($errors, __(“Another Facebook ID seems to be attached to your account. Please check.”));
}
}
//Create the link between the user’s email ID and the facebook ID for the first time, and log him in.
else {
if(!add_user_meta($existingID, ‘fbid’, $login, true)) {
array_push($errors, __(“Sorry! We were unable to link your FB account.”));
}
else {
wp_set_auth_cookie($existingID, true);
}
}
}
}

//Case 3 : When the user is already registered
else {
wp_set_auth_cookie($id, true);
}

$resp = array();
if(!count($errors)) {
$resp[‘status’] = “Success”;
$resp[‘loggedIn’] = true;
$resp[‘errors’] = $errors;
}
else {
$resp[‘status’] = “Failure”;
$resp[‘loggedIn’] = false;
$resp[‘errors’] = $errors;
}
echo “reply(“.json_encode($resp).”)”;`
I am not trying to use any plugin out there because they are overcomplicated. I don’t want to have to deal with any setting. I just wanna be able to set the Facebook login option and forget about it. Thanks for helping.