Redirrect after facebook successful login to wooommerce cart page url

function modal_tamplate_html() {
session_start();
define('FB_APP_ID', 'xxxxxxxxx');
define('FB_APP_SECRET', 'xxxxxxxxxx');
//$redirect_url = rtrim(home_url(), "/") . '/';

$redirect_url = 'http://localhost/crushslimdev/wordpress/cart/';
error_log('url:'.$redirect_url);
$fb = new Facebook([
    'app_id' => 'xxxxxxx',
    'app_secret' => 'xxxxxxxxxxx',
]);
$helper = $fb->getRedirectLoginHelper();

$login_url = $helper->getLoginUrl($redirect_url, ['email']);

 $fb_login_btn = '<div class="option facebook-button"> 
     <a href="' . esc_url($login_url) . '"  id="facebook-login">
     <img src="wp-content/plugins/facebook login plugin/assets/fb.png" alt="Google Icon" class="facebook-icon">
            Sign in with Facebook
        </a>
    </div>';

if (isset($_GET['code'])) {
    error_log('Facebook Callback - Code Parameter Detected');

    $fb = new Facebook([
        'app_id' => 'xxxxxxxxxxxx',
        'app_secret' => 'xxxxxxxxxxxxx'
    ]);

    $helper = $fb->getRedirectLoginHelper();

    error_log('Facebook Callback - Helper created');


    $access_token = $helper->getAccessToken();

    if (isset($access_token)) {
        error_log('Facebook Callback - Access Token Obtained');

        $fb->setDefaultAccessToken($access_token);
        $response = $fb->get('/me?fields=id,name,email,picture');
        $user = $response->getGraphUser();
        $email = $user->getEmail();
        $user_id = $user->getId();

        error_log('Facebook Callback - Email: ' . $email);
        error_log('Facebook Callback - User ID: ' . $user_id);

        $existing_user = get_user_by('email', $email);

        if ($existing_user) {
            wp_set_auth_cookie($existing_user->ID, true);
            error_log('Facebook Callback - Existing User Logged In');
        } else {
            $username = $user->getName(); // Use Facebook name as username
            $password = wp_generate_password(); // Generate a random password

            $user_id = wp_create_user($username, $password, $email);

            if (!is_wp_error($user_id)) {
                wp_update_user(['ID' => $user_id, 'display_name' => $username]);

                $profile_picture_url = $user['picture']['url'];
                update_user_meta($user_id, 'profile_picture', $profile_picture_url);

                wp_set_auth_cookie($user_id, true);
            } else {
                // Handle user creation error
                error_log('Facebook Callback - User Creation Error: ' . $user_id->get_error_message());
            }
        }   
    }
} else {
    // Handle the case where the 'code' parameter is not set (e.g., user canceled login)
}
?>
<div id="signupModal" class="modal" style="display:none";>
  <div class="modal-content" >


 <?php echo  $fb_login_btn; ?>


</div>
</div>
<?php
}
add_action('wp_footer', 'modal_tamplate_html');

here is my  jquery script
if (!custom_vars.userIsLoggedIn)  {

        // Add an event listener for all links on the page
        $('.single_add_to_cart_button.button.alt.wp-element-button').click(function(e) {
            console.log("Site title clicked.");
            // Check if the user is logged out
            if ($('body.logged-out').length) {

 $('#signupModal').show(); 
                // Hide modal when close icon is clicked
                $(".close").click(function(e) {
                    $("#signupModal").hide();
                    return false;
                });