From 2f9892f57f0994242b701b751cd9382732130f86 Mon Sep 17 00:00:00 2001
From: Richard BAYET <richard.bayet@smile.fr>
Date: Mon, 3 Dec 2018 19:17:01 +0100
Subject: [PATCH] Fixes #1213 Category RSS dataprovider support

---
 .../Plugin/Rss/CategoryPlugin.php             | 68 +++++++++++++++++++
 .../etc/frontend/di.xml                       |  8 +++
 2 files changed, 76 insertions(+)
 create mode 100644 src/module-elasticsuite-catalog/Plugin/Rss/CategoryPlugin.php

diff --git a/src/module-elasticsuite-catalog/Plugin/Rss/CategoryPlugin.php b/src/module-elasticsuite-catalog/Plugin/Rss/CategoryPlugin.php
new file mode 100644
index 000000000..ef814a6a0
--- /dev/null
+++ b/src/module-elasticsuite-catalog/Plugin/Rss/CategoryPlugin.php
@@ -0,0 +1,68 @@
+<?php
+/**
+ * DISCLAIMER
+ *
+ * Do not edit or add to this file if you wish to upgrade this module to newer
+ * versions in the future.
+ *
+ * @category  Smile
+ * @package   Smile\ElasticsuiteCatalog
+ * @author    Richard BAYET <richard.bayet@smile.fr>
+ * @copyright 2018 Smile
+ * @license   Open Software License ("OSL") v. 3.0
+ */
+namespace Smile\ElasticsuiteCatalog\Plugin\Rss;
+
+use Smile\ElasticsuiteCore\Search\Request\QueryInterface;
+
+/**
+ * Category RSS data provider plugin
+ *
+ * @category Smile
+ * @package  Smile\ElasticsuiteCatalog
+ */
+class CategoryPlugin
+{
+    /**
+     * Apply category filter to the collection
+     *
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     *
+     * @param \Magento\Catalog\Model\Rss\Category                     $dataProvider Data provider.
+     * @param \Magento\Catalog\Model\ResourceModel\Product\Collection $collection   Product collection.
+     * @param \Magento\Catalog\Model\Category                         $category     Current category.
+     * @param int                                                     $storeId      Store ID.
+     *
+     * @return \Magento\Catalog\Model\ResourceModel\Product\Collection
+     */
+    public function afterGetProductCollection(
+        \Magento\Catalog\Model\Rss\Category $dataProvider,
+        \Magento\Catalog\Model\ResourceModel\Product\Collection $collection,
+        \Magento\Catalog\Model\Category $category,
+        $storeId
+    ) {
+        $collection->addFieldToFilter('category_ids', $this->getCategoryFilterParam($category));
+
+        return $collection;
+    }
+
+    /**
+     * Return category filter param
+     *
+     * @param \Magento\Catalog\Model\Category $category Category.
+     *
+     * @return int|QueryInterface
+     */
+    private function getCategoryFilterParam(\Magento\Catalog\Model\Category $category)
+    {
+        $filterParam = $category->getId();
+
+        if ($category->getVirtualRule()) { // Implicit dependency to Virtual Categories module.
+            $category->setIsActive(true);
+
+            $filterParam = $category->getVirtualRule()->getCategorySearchQuery($category);
+        }
+
+        return $filterParam;
+    }
+}
diff --git a/src/module-elasticsuite-catalog/etc/frontend/di.xml b/src/module-elasticsuite-catalog/etc/frontend/di.xml
index 84b7a7e97..7e578974a 100644
--- a/src/module-elasticsuite-catalog/etc/frontend/di.xml
+++ b/src/module-elasticsuite-catalog/etc/frontend/di.xml
@@ -173,6 +173,14 @@
         </arguments>
     </type>
 
+    <!-- Ensure category RSS feed dataprovider is using fulltext collection, to prevent error when it sends it through the Layer -->
+    <type name="Magento\Catalog\Model\Rss\Category">
+        <arguments>
+            <argument name="collectionFactory" xsi:type="object">Magento\CatalogSearch\Model\ResourceModel\Fulltext\CollectionFactory</argument>
+        </arguments>
+        <plugin name="apply_category_filter" type="Smile\ElasticsuiteCatalog\Plugin\Rss\CategoryPlugin"/>
+    </type>
+
     <type name="Magento\CatalogSearch\Controller\Result\Index">
         <plugin name="redirect_if_one_result" type="Smile\ElasticsuiteCatalog\Plugin\CatalogSearch\ResultPlugin"/>
     </type>