public function init() {
        $this->clientErrorStore = new Errors\ClientErrorStore($this);
        $this->adminErrorStore = new Errors\AdminErrorStore($this);
        $this->clientErrorStore->populate();
        $this->adminErrorStore->populate();
        $opts = $this->getActingOpts();
        $this->api = new Api\Client(
            $this,
            $opts['sandbox'] === true ? Config\Constants::SANDBOX_API : Config\Constants::LIVE_API,
            $opts['channel_id'],
            $opts['channel_secret_key']
        );

        $ready = $this->ready();
        add_action('init', function () use ($ready) {
            if ($ready === true) {
                $this->routes = new Routes\Routes($this);
                $this->routes->dispatcher->listen();
            }
        }, 11);

        (new DeliveryPage($this))->init();
        (new Views\ConfirmPage\ConfirmPage($this))->init()->addHooks();

        if (is_admin()) {
            // create settlement module settings page
            (new Admin\SettlementSettings($this))->init();
            if ($ready === true) {
                (new Admin\Views\OrderEditPage\OrderEditPage($this))->addHooks();
                (new Admin\Views\OrderListPage($this))->init()->addHooks();
            }
        }

        usces_register_action(
            'wcexalpCompletePurchase',
            'get',
            'wcexalpCompletePurchase',
            null,
            function () {
                $confirm = new Api\Confirm($this);
                $confirm->init()->addHooks();
                $confirm->middleware($_GET); // route guards
                $confirm->fulfillOrder($_GET);
            }
        );
    }