function wsl_watchdog_log_action($action_name, $action_args = array(), $user_id = 0)
{
    $provider = wsl_process_login_get_selected_provider();
    if (!$provider) {
        if (isset($_REQUEST['hauth_start'])) {
            $provider = $_REQUEST['hauth_start'];
        }
        if (isset($_REQUEST['hauth_done'])) {
            $provider = $_REQUEST['hauth_done'];
        }
    }
    $action_args[] = "Backtrace: " . wsl_generate_backtrace();
    $action_args[] = 'USER: '******'. PID: ' . getmypid() . '. MEM: ' . ceil(memory_get_usage() / 1024) . 'KB.';
    if (get_option('wsl_settings_debug_mode_enabled') == 1) {
        return wsl_watchdog_log_to_file($action_name, $action_args, $user_id, $provider);
    }
    wsl_watchdog_log_to_database($action_name, $action_args, $user_id, $provider);
}
/**
* Finish the authentication process
*
* Steps:
*     1. Get the user profile from provider
*     2. Create new wordpress user if he didn't exist in database
*     3. Store his Hybridauth profile, contacts and BP mapping
*     4. Authenticate the user within wordpress
*/
function wsl_process_login_end()
{
    // HOOKABLE:
    do_action("wsl_process_login_end_start");
    // HOOKABLE: set a custom Redirect URL
    $redirect_to = wsl_process_login_get_redirect_to();
    // HOOKABLE: selected provider name
    $provider = wsl_process_login_get_selected_provider();
    // authentication mode
    $auth_mode = wsl_process_login_get_auth_mode();
    $is_new_user = false;
    // is it a new or returning user
    $user_id = '';
    // wp user id
    $adapter = '';
    // hybriauth adapter for the selected provider
    $hybridauth_user_profile = '';
    // hybriauth user profile
    $requested_user_login = '';
    // username typed by users in Profile Completion
    $requested_user_email = '';
    // email typed by users in Profile Completion
    // provider is enabled?
    if (!get_option('wsl_settings_' . $provider . '_enabled')) {
        return wsl_process_login_render_notice_page(_wsl__("Unknown or disabled provider.", 'wordpress-social-login'));
    }
    if ('test' == $auth_mode) {
        $redirect_to = admin_url('options-general.php?page=wordpress-social-login&wslp=auth-paly&provider=' . $provider);
        return wp_safe_redirect($redirect_to);
    }
    if ('link' == $auth_mode) {
        // a social account cant be associated with more than one wordpress account.
        $hybridauth_user_profile = wsl_process_login_request_user_social_profile($provider);
        $adapter = wsl_process_login_get_provider_adapter($provider);
        $user_id = (int) wsl_get_stored_hybridauth_user_id_by_provider_and_provider_uid($provider, $hybridauth_user_profile->identifier);
        if ($user_id && $user_id != get_current_user_id()) {
            return wsl_process_login_render_notice_page(sprintf(_wsl__("Your <b>%s ID</b> is already linked to another account on this website.", 'wordpress-social-login'), $provider));
        }
        $user_id = get_current_user_id();
        // doesn't hurt to double check
        if (!$user_id) {
            return wsl_process_login_render_notice_page(_wsl__("Sorry, we couldn't link your account.", 'wordpress-social-login'));
        }
    } elseif ('login' != $auth_mode) {
        return wsl_process_login_render_notice_page(_wsl__('Bouncer says no.', 'wordpress-social-login'));
    }
    if ('login' == $auth_mode) {
        // returns user data after he authenticate via hybridauth
        list($user_id, $adapter, $hybridauth_user_profile, $requested_user_login, $requested_user_email, $wordpress_user_id) = wsl_process_login_get_user_data($provider, $redirect_to);
        // if no associated user were found in wslusersprofiles, create new WordPress user
        if (!$wordpress_user_id) {
            $user_id = wsl_process_login_create_wp_user($provider, $hybridauth_user_profile, $requested_user_login, $requested_user_email);
            $is_new_user = true;
        } else {
            $user_id = $wordpress_user_id;
            $is_new_user = false;
        }
    }
    // if user is found in wslusersprofiles but the associated WP user account no longer exist
    // > this should never happen! but just in case: we delete the user wslusersprofiles/wsluserscontacts entries and we reset the process
    $wp_user = get_userdata($user_id);
    if (!$wp_user) {
        wsl_delete_stored_hybridauth_user_data($user_id);
        return wsl_process_login_render_notice_page(sprintf(_wsl__("Sorry, we couldn't connect you. <a href=\"%s\">Please try again</a>.", 'wordpress-social-login'), site_url('wp-login.php', 'login_post')));
    }
    // store user hybridauth profile (wslusersprofiles), contacts (wsluserscontacts) and buddypress mapping
    wsl_process_login_update_wsl_user_data($is_new_user, $user_id, $provider, $adapter, $hybridauth_user_profile, $wp_user);
    // finally create a wordpress session for the user
    wsl_process_login_authenticate_wp_user($user_id, $provider, $redirect_to, $adapter, $hybridauth_user_profile, $wp_user);
}