<?php

namespace SampleModuleBlockAdminhtmlCategoryTree;
use MagentoCatalogModelResourceModelCategoryCollection;
use MagentoFrameworkDataTreeNode;
use MagentoStoreModelStoreManagerInterface;


/**
 * Category container block
 */
class Supplier extends MagentoFrameworkViewElementTemplate
{

    /**
     * Category Map collection
     *
     * @var SampleModuleModelResourceCategoryMapCollectionFactory
     */
    protected $_categoryMapCollectionFactory;

    /**
     * @var StoreManagerInterface
     */
    protected $_storeManager;

    /**
     * @param MagentoBackendBlockTemplateContext $context
     * @param SampleModuleModelResourceCategoryMapCollectionFactory $categoryMapCollectionFactory
     * @param StoreManagerInterface $storeManager
     * @param array $data
     */
    public function __construct(
        MagentoBackendBlockTemplateContext $context,
        SampleModuleModelResourceCategoryMapCollectionFactory $categoryMapCollectionFactory,
        StoreManagerInterface $storeManager,
        array $data = []
    ) {
        $this->_categoryMapCollectionFactory = $categoryMapCollectionFactory;
        $this->_storeManager = $storeManager;
        parent::__construct($context, $data);
    }


    /**
     * @param int $categoryId
     *
     * @return SampleModuleModelResourceCategoryMapCollection
     */
    protected function getMapsForCategory($categoryId)
    {
        $categoryMapCollection = $this->_categoryMapCollectionFactory->create();

        $storeId = $this->_storeManager->getStore()->getId();

        $categoryMapCollection
            ->addFilter('integrastore_category_id', $categoryId)
            ->addFilter('shop_id', $storeId)
            ->load();

        return $categoryMapCollection;
    }

}

class CurrentStore
{
    public function __construct(
        MagentoFrameworkAppRequestHttp $request,
        //...
    ) {
       $websiteId = (int) $request->getParam('website', 0);
       // ...
    }
}