<?php
/**
 * Force the catalog top navigation to use the Esun mega menu template.
 */
namespace Esun\MegaMenu\Plugin;

use Esun\MegaMenu\ViewModel\MegaMenuData;
use Magento\Theme\Block\Html\Topmenu;

class TopmenuTemplatePlugin
{
    private $megaMenuData;

    public function __construct(MegaMenuData $megaMenuData)
    {
        $this->megaMenuData = $megaMenuData;
    }

    public function beforeToHtml(Topmenu $subject): void
    {
        if ($subject->getNameInLayout() !== 'catalog.topnav') {
            return;
        }

        $subject->setData('view_model', $this->megaMenuData);
        $subject->setTemplate('Esun_MegaMenu::html/topmenu.phtml');
    }
}