OP-225: Facets resolver

src/Form/Resolver/FacetsResolver.php

@@ -0,0 +1,34 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BitBag\SyliusElasticsearchPlugin\Form\Resolver;
+
+use BitBag\SyliusElasticsearchPlugin\Facet\RegistryInterface;
+use BitBag\SyliusElasticsearchPlugin\QueryBuilder\FormQueryBuilder\SiteWideFacetsQueryBuilderInterface;
+use FOS\ElasticaBundle\Finder\PaginatedFinderInterface;
+use Pagerfanta\Pagerfanta;
+use Symfony\Component\Form\FormEvent;
+
+final class FacetsResolver implements ProductsFilterFacetResolverInterface
+{
+    public function __construct(
+        private SiteWideFacetsQueryBuilderInterface $queryBuilder,
+        private RegistryInterface $facetRegistry,
+        private PaginatedFinderInterface $finder
+    ) {
+    }
+
+    public function resolveFacets(FormEvent $event, string $namePropertyPrefix): Pagerfanta
+    {
+        $query = $this->queryBuilder->getQuery($event);
+
+        foreach ($this->facetRegistry->getFacets() as $facetId => $facet) {
+            $query->addAggregation($facet->getAggregation()->setName($facetId));
+        }
+
+        $query->setSize(0);
+
+        return $this->finder->findPaginated($query);
+    }
+}

src/Form/Resolver/FacetsResolverInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace BitBag\SyliusElasticsearchPlugin\Form\Resolver;
+
+use Pagerfanta\Pagerfanta;
+use Symfony\Component\Form\FormEvent;
+
+interface FacetsResolverInterface
+{
+    public function resolveFacets(FormEvent $event): Pagerfanta;
+
+}