<?php 

namespace Acme\DemoBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\Security\Core\Exception\AccessDeniedException;

use Mahjouba91\PrestashopBridge\PrestashopBridge;

class PrestashopBridgeExampleController extends Controller
{
	public function loginAction()
	{
		if (!$this->get('security.context')->isGranted('ROLE_USER')) {
			throw new AccessDeniedException();
		}

		$prestaBridge = new PrestashopBridge('/path/to/prestashop/', 1);

		$user = $this->getUser(); //get connected user

		if (!$prestaBridge->userExist($user->getEmail())) //if user exist in prestahop database
			$prestaBridge->createUser(
				$user->getEmail(),
				$user->getLastName(),
				$user->getFirstName()
			);

		$prestaBridge->login($user->getEmail());

		return $this->redirect('http://prestashop_url/');
	}
}

<?php
/**
* Plugin Name: Prestashop Bridge
* Description: Handle registration/login between PrestaShop and WordPress
* Version: 1.0
* Author: Florian TIAR
* Author URI: http://wpstrategie.fr
* License: GPL2 license
*/

// don't load directly
if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

require( ABSPATH . '/vendor/autoload.php' );
use Mahjouba91\PrestashopBridge\PrestashopBridge;

// Hook after a new user is registred
add_action( 'user_register', function( $user_id ) {
	// If it's a front registration, wait the email validation because the user don't choose any password yet
	if ( ! isset( $_POST['pass1'] ) ) {
		return;
	}
	// For backend registration, create prestashop account now
	cbl_add_customer( $_POST, $user_id );
}, 10, 1 );

// After password reset
add_action( 'after_password_reset', function( $user, $new_pass ) {
	cbl_add_customer( array( 'pass1' => $new_pass ), $user->ID );
}, 10, 2 );

// After WordPress login, login the user in PrestaShop too
add_action( 'wp_login', function( $user_login, $user ) {
	$presta_path = cbl_get_prestashop_path();
	$prestaBridge = new PrestashopBridge( $presta_path, 1 );
	$login = $prestaBridge->login( $user->user_email );
}, 10, 2 );

// After WordPress logout, logout the user in PrestaShop too
add_action( 'wp_logout', function() {
	$presta_path = cbl_get_prestashop_path();
	$prestaBridge = new PrestashopBridge( $presta_path, 1 );
	$prestaBridge->logout();
});

/**
 * Set a minimum password to 5 chars like PrestaShop do
 * In order to fix this bug : if a WP User password is less than 5 chars, you can't login with those credentials in PrestaShop because Presta requires a minimum of 5 chars
 */
add_action( 'validate_password_reset' , function( $errors, $user ) {
	if ( isset( $_POST['pass1'] ) ) {
		if ( strlen( $_POST['pass1'] ) < 5 ) {
			$errors->add( 'password_too_short', 'ERREUR: Le mot de passe doit faire 5 caractères minimum.' );
		}
	}
}, 10, 2 );

function cbl_add_customer( $params, $user_id ) {
	$user = get_userdata( $user_id );
	$presta_path = cbl_get_prestashop_path();
	$prestaBridge = new PrestashopBridge( $presta_path, 1 );
	if ( $prestaBridge->userExist( $user->user_email ) ) {
		return false;
	}
	
	$lastname = $user->last_name;
	$firstname = $user->first_name;
	if ( empty( $user->last_name ) ) {
		$lastname = $user->user_login;
	}
	if ( empty( $user->last_name ) ) {
		$firstname = $user->user_login;
	}
	
	$prestaBridge->createUser( $user->user_email, $user->last_name, $user->first_name, $params['pass1'] );
	return true;
}

function cbl_get_prestashop_path () {
	return realpath( ABSPATH . 'path/to/prestashop/' );
}