[TASK] Use filter interface for custom added filter

Classes/Domain/Search/Filter/FrontendUserAccessFilter.php

@@ -1,6 +1,6 @@
 <?php
 
-namespace Codappix\SearchCore\Hook\Filter;
+namespace Codappix\SearchCore\Domain\Search\Filter;
 
 /*
  * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
@@ -25,26 +25,28 @@ use TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication;
 
 /**
  * Filter: FrontendUserAccess
- * @package Codappix\SearchCore\Hook\Filter
  */
-class FrontendUserAccessFilter
+class FrontendUserAccessFilter implements SearchFilterInterface
 {
-    /**
-     * @param array $parameters
-     * @return void
-     */
-    public function generate($parameters)
+    public function add(array $query, array $config, $value): array
     {
-        $this->appendQueryWithAccessFilter($parameters['query'], $parameters['value']);
+        return $this->addAccessFilter($query, $value);
     }
 
-    protected function appendQueryWithAccessFilter(array &$query, string $field)
+    /**
+     * Add simple boolean lookup for filtering on access groups
+     */
+    protected function addAccessFilter(array $query, string $field): array
     {
         $query['query']['bool']['must'][] = [
             'terms' => [$field => $this->getUserGroups()]
         ];
+        return $query;
     }
 
+    /**
+     * Get inherited user groups from logged in user or simulated user
+     */
     protected function getUserGroups(): array
     {
         $feUser = $this->getFrontendUserAuthentication();

Classes/Domain/Search/Filter/InvalidSearchFilterException.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace Codappix\SearchCore\Domain\Search\Filter;
+
+/*
+ * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+class InvalidSearchFilterException extends \InvalidArgumentException
+{
+}

Classes/Domain/Search/Filter/SearchFilterInterface.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Codappix\SearchCore\Domain\Search\Filter;
+
+/*
+ * Copyright (C) 2018 Benjamin Serfhos <benjamin@serfhos.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+interface SearchFilterInterface
+{
+    /**
+     * @param array $query
+     * @param array $config
+     * @param mixed $value
+     * @return array Adjusted $query
+     */
+    public function add(array $query, array $config, $value): array;
+}

Classes/Domain/Search/QueryFactory.php

@@ -25,8 +25,12 @@ use Codappix\SearchCore\Configuration\ConfigurationContainerInterface;
 use Codappix\SearchCore\Configuration\ConfigurationUtility;
 use Codappix\SearchCore\Configuration\InvalidArgumentException;
 use Codappix\SearchCore\Connection\SearchRequestInterface;
+use Codappix\SearchCore\Domain\Search\Filter\InvalidSearchFilterException;
+use Codappix\SearchCore\Domain\Search\Filter\SearchFilterInterface;
 use TYPO3\CMS\Core\Utility\ArrayUtility;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
+use TYPO3\CMS\Extbase\Object\ObjectManagerInterface;
+use TYPO3\CMS\Extbase\Utility\DebuggerUtility;
 
 class QueryFactory
 {
@@ -45,14 +49,21 @@ class QueryFactory
      */
     protected $configurationUtility;
 
+    /**
+     * @var ObjectManagerInterface
+     */
+    protected $objectManager;
+
     public function __construct(
         \TYPO3\CMS\Core\Log\LogManager $logManager,
         ConfigurationContainerInterface $configuration,
-        ConfigurationUtility $configurationUtility
+        ConfigurationUtility $configurationUtility,
+        ObjectManagerInterface $objectManager
     ) {
         $this->logger = $logManager->getLogger(__CLASS__);
         $this->configuration = $configuration;
         $this->configurationUtility = $configurationUtility;
+        $this->objectManager = $objectManager;
     }
 
     /**
@@ -231,19 +242,28 @@ class QueryFactory
 
     protected function addFilter(string $name, $value, array $config, array &$query): array
     {
-        if (!empty($config)) {
-            if ($config['type'] && $config['type'] === 'user') {
-                if (!isset($config['userFunc'])) {
-                    throw new MissingAttributeException('No userFunc configured for filter type: user', 1539876182018);
+        if (empty($config)) {
+            // Fallback on default term query when no added configuration
+            $query['query']['bool']['filter'][] = [
+                'term' => [
+                    $name => $value
+                ]
+            ];
+            return $query;
+        }
+
+        if ($config['custom'] && $config['type'] === 'custom') {
+            $customFilter = $this->objectManager->get($config['custom']);
+            if (!($customFilter instanceof SearchFilterInterface)) {
+                throw new InvalidSearchFilterException(
+                    'Custom filter (' . $config['custom'] . ') not instance of SearchFilterInterface',
+                    1539876182018
+                );
+            }
+
+            return $customFilter->add($query, $config, $value);
         }
 
-                $parameters = [
-                    'config' => $config,
-                    'value' => $value,
-                    'query' => &$query,
-                ];
-                GeneralUtility::callUserFunction($config['userFunc'], $parameters, $this);
-            } else {
         $filter = [];
         if (isset($config['fields'])) {
             foreach ($config['fields'] as $elasticField => $inputField) {
@@ -266,15 +286,6 @@ class QueryFactory
                 $config['field'] => $filter
             ];
         }
-            }
-        } else {
-            $query['query']['bool']['filter'][] = [
-                'term' => [
-                    $name => $value
-                ]
-            ];
-        }
-
         return $query;
     }
 

Configuration/TypoScript/setup.typoscript

@@ -47,8 +47,8 @@ plugin.tx_searchcore {
             mapping {
                 filter {
                     frontendUserAccess {
-                        type = user
-                        userFunc = Codappix\SearchCore\Hook\Filter\FrontendUserAccessFilter->generate
+                        type = custom
+                        custom = Codappix\SearchCore\Domain\Search\Filter\FrontendUserAccessFilter
                     }
                 }
             }

Documentation/source/changelog/20181028-user-access-indexed.rst

@@ -1,5 +1,5 @@
 Feature "Added frontend user authentication access"
-===============================================================
+===================================================
 
 Indexation added based on page access via ``fe_group`` and inherited
 from ```extendToSubpages```.
@@ -7,8 +7,8 @@ from ```extendToSubpages```.
 The searching is added via typoscript using the UserFunc filter::
 
     frontendUserAccess {
-        type = user
-        userFunc = Codappix\SearchCore\Hook\Filter\FrontendUserAccessFilter->generate
+        type = custom
+        custom = Codappix\SearchCore\Domain\Search\Filter\FrontendUserAccessFilter
     }
 
 To bypass this filter simply unset default filter in searching.filter

Documentation/source/changelog/20181030-custom-class-filter.rst

@@ -0,0 +1,29 @@
+Feature "Manipulate search filter"
+==================================
+
+You can manipulate the filter via a custom class through the ``custom`` type typoscript
+mapping.::
+
+  plugin.tx_searchcore.settings.searching {
+    mapping {
+      filter {
+        frontendUserAccess {
+          type = custom
+          custom = Codappix\SearchCore\Domain\Search\Filter\FrontendUserAccessFilter
+        }
+      }
+    }
+  }
+
+If you want to force this filter on searching make sure to define them as default filters like:::
+
+  plugin.tx_searchcore.settings.searching {
+    filter {
+      frontendUserAccess = search_access
+    }
+  }
+
+Example
+-------
+See ``Codappix\SearchCore\Domain\Search\Filter\FrontendUserAccessFilter`` as example.
+