Add storage for filters

src/Bundle/Resources/config/services/filters.xml

@@ -15,6 +15,12 @@
     <services>
         <defaults public="true" />
 
+        <service id="sylius.grid.filter_storage.session" class="Sylius\Bundle\GridBundle\Storage\SessionFilterStorage" public="false">
+            <argument type="service" id="request_stack" />
+        </service>
+        <service id="sylius.grid.filter_storage" alias="sylius.grid.filter_storage.session" />
+        <service id="Sylius\Component\Grid\Filter\Storage\FilterStorageInterface" alias="sylius.grid.filter_storage" />
+
         <service id="sylius.form_registry.grid_filter" class="Sylius\Bundle\GridBundle\Form\Registry\FormTypeRegistry" public="false" />
 
         <service id="Sylius\Component\Grid\Filter\StringFilter">

src/Component/Filter/Storage/FilterStorageInterface.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Grid\Filter\Storage;
+
+interface FilterStorageInterface
+{
+    public function set(array $filters): void;
+
+    public function all(): array;
+
+    public function hasFilters(): bool;
+}

src/Component/Symfony/Session/Filter/Storage/SessionFilterStorage.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Grid\Symfony\Session\Filter\Storage;
+
+use Sylius\Component\Grid\Filter\Storage\FilterStorageInterface;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\HttpFoundation\Session\SessionInterface;
+
+final class SessionFilterStorage implements FilterStorageInterface
+{
+    public function __construct(private readonly RequestStack $requestStack)
+    {
+    }
+
+    public function set(array $filters): void
+    {
+        $this->getSession()->set('filters', $filters);
+    }
+
+    public function all(): array
+    {
+        return $this->getSession()->all()['filters'] ?? [];
+    }
+
+    public function hasFilters(): bool
+    {
+        return [] !== $this->getSession()->get('filters', []);
+    }
+
+    private function getSession(): SessionInterface
+    {
+        return $this->requestStack->getSession();
+    }
+}

src/Component/Tests/Integration/Filter/Storage/SessionFilterStorageTest.php

@@ -0,0 +1,37 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Grid\Tests\Integration\Filter\Storage;
+
+use Sylius\Component\Grid\Filter\Storage\FilterStorageInterface;
+use Sylius\Component\Grid\Symfony\Session\Filter\Storage\SessionFilterStorage;
+use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
+
+final class SessionFilterStorageTest extends KernelTestCase
+{
+    public function testTheContainerContainsTheServiceAndAliases(): void
+    {
+        $this->bootKernel();
+
+        $container = $this->getContainer();
+
+        $this->assertTrue($container->has('sylius_grid.symfony.session.filter_storage'));
+        $this->assertInstanceOf(SessionFilterStorage::class, $container->get('sylius_grid.symfony.session.filter_storage'));
+
+        $this->assertTrue($container->has('sylius_grid.filter_storage'));
+        $this->assertInstanceOf(SessionFilterStorage::class, $container->get('sylius_grid.symfony.session.filter_storage'));
+
+        $this->assertTrue($container->has(FilterStorageInterface::class));
+        $this->assertInstanceOf(SessionFilterStorage::class, $container->get(FilterStorageInterface::class));
+    }
+}

src/Component/Tests/Unit/Symfony/Session/Filter/Storage/SessionFilterStorageTest.php

@@ -0,0 +1,104 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Grid\Tests\Unit\Symfony\Session\Filter\Storage;
+
+use PHPUnit\Framework\TestCase;
+use Sylius\Component\Grid\Filter\Storage\FilterStorageInterface;
+use Sylius\Component\Grid\Symfony\Session\Filter\Storage\SessionFilterStorage;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\RequestStack;
+use Symfony\Component\HttpFoundation\Session\Session;
+use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;
+
+final class SessionFilterStorageTest extends TestCase
+{
+    public function testItImplementsFilterStorageInterface(): void
+    {
+        $this->assertInstanceOf(FilterStorageInterface::class, new SessionFilterStorage(new RequestStack()));
+    }
+
+    public function testItSetsFiltersInASession(): void
+    {
+        $filters = [
+            'filter' => 'value',
+        ];
+
+        $requestStack = new RequestStack();
+        $request = new Request();
+        $session = new Session(new MockArraySessionStorage());
+
+        $request->setSession($session);
+        $requestStack->push($request);
+
+        $filterStorage = new SessionFilterStorage($requestStack);
+        $filterStorage->set($filters);
+
+        $this->assertEquals($filters, $session->get('filters'));
+    }
+
+    public function testItReturnsAllFiltersFromASession(): void
+    {
+        $filters = [
+            'filter' => 'value',
+        ];
+
+        $requestStack = new RequestStack();
+        $request = new Request();
+        $session = new Session(new MockArraySessionStorage());
+
+        $session->set('filters', $filters);
+        $request->setSession($session);
+        $requestStack->push($request);
+
+        $filterStorage = new SessionFilterStorage($requestStack);
+
+        $this->assertEquals($filters, $filterStorage->all());
+    }
+
+    public function testItReturnsTrueIfFiltersAreSet(): void
+    {
+        $filters = [
+            'filter' => 'value',
+        ];
+
+        $requestStack = new RequestStack();
+        $request = new Request();
+        $session = new Session(new MockArraySessionStorage());
+
+        $session->set('filters', $filters);
+        $request->setSession($session);
+        $requestStack->push($request);
+
+        $filterStorage = new SessionFilterStorage($requestStack);
+
+        $this->assertTrue($filterStorage->hasFilters());
+    }
+
+    public function testItReturnsFalseIfFiltersAreSet(): void
+    {
+        $filters = [];
+
+        $requestStack = new RequestStack();
+        $request = new Request();
+        $session = new Session(new MockArraySessionStorage());
+
+        $session->set('filters', $filters);
+        $request->setSession($session);
+        $requestStack->push($request);
+
+        $filterStorage = new SessionFilterStorage($requestStack);
+
+        $this->assertFalse($filterStorage->hasFilters());
+    }
+}