Allow foreign code to add template variables

Classes/Controller/Frontend/CalendarController.php

@@ -21,6 +21,7 @@ namespace WerkraumMedia\Calendar\Controller\Frontend;
  * 02110-1301, USA.
  */
 
+use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Annotation as Extbase;
 use TYPO3\CMS\Extbase\Mvc\Controller\ActionController;
 use TYPO3\CMS\Extbase\Property\TypeConverter\DateTimeConverter;
@@ -28,6 +29,7 @@ use WerkraumMedia\Calendar\Domain\Model\Day;
 use WerkraumMedia\Calendar\Domain\Model\Month;
 use WerkraumMedia\Calendar\Domain\Model\Week;
 use WerkraumMedia\Calendar\Domain\Model\Year;
+use WerkraumMedia\Calendar\Events\AssignTemplateVariables;
 
 class CalendarController extends ActionController
 {
@@ -51,7 +53,7 @@ class CalendarController extends ActionController
      */
     public function yearAction(Year $year)
     {
-        $this->view->assignMultiple([
+        $this->assignVariables([
             'year' => $year,
         ]);
     }
@@ -77,7 +79,7 @@ class CalendarController extends ActionController
      */
     public function monthAction(Month $month)
     {
-        $this->view->assignMultiple([
+        $this->assignVariables([
             'month' => $month,
         ]);
     }
@@ -103,7 +105,7 @@ class CalendarController extends ActionController
      */
     public function weekAction(Week $week)
     {
-        $this->view->assignMultiple([
+        $this->assignVariables([
             'week' => $week,
         ]);
     }
@@ -134,8 +136,15 @@ class CalendarController extends ActionController
      */
     public function dayAction(Day $day)
     {
-        $this->view->assignMultiple([
+        $this->assignVariables([
             'day' => $day,
         ]);
     }
+
+    private function assignVariables(array $variables): void
+    {
+        $event = GeneralUtility::makeInstance(AssignTemplateVariables::class, $variables);
+        $this->eventDispatcher->dispatch($event);
+        $this->view->assignMultiple($event->getVariables());
+    }
 }

Classes/Events/AssignTemplateVariables.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace WerkraumMedia\Calendar\Events;
+
+/*
+ * Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * 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.
+ */
+
+final class AssignTemplateVariables
+{
+    /**
+     * @var array
+     */
+    private $variables;
+
+    public function __construct(
+        array $variables
+    ) {
+        $this->variables = $variables;
+    }
+
+    public function getVariables(): array
+    {
+        return $this->variables;
+    }
+
+    public function setVariables(array $variables): void
+    {
+        $this->variables = $variables;
+    }
+}

Tests/Unit/Controller/Frontend/CalendarControllerTest.php

@@ -25,6 +25,7 @@ use PHPUnit\Framework\TestCase;
 use Prophecy\Argument as ProphetArgument;
 use Prophecy\PhpUnit\ProphecyTrait;
 use Prophecy\Prophecy\ObjectProphecy;
+use Psr\EventDispatcher\EventDispatcherInterface;
 use TYPO3\CMS\Extbase\Mvc\Controller\Argument;
 use TYPO3\CMS\Extbase\Mvc\Controller\Arguments;
 use TYPO3\CMS\Extbase\Mvc\View\ViewInterface;
@@ -35,6 +36,7 @@ use WerkraumMedia\Calendar\Domain\Model\Day;
 use WerkraumMedia\Calendar\Domain\Model\Month;
 use WerkraumMedia\Calendar\Domain\Model\Week;
 use WerkraumMedia\Calendar\Domain\Model\Year;
+use WerkraumMedia\Calendar\Events\AssignTemplateVariables;
 use WerkraumMedia\Calendar\Tests\ForcePropertyTrait;
 
 /**
@@ -96,6 +98,10 @@ class CalendarControllerTest extends TestCase
     {
         $subject = new CalendarController();
 
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(ProphetArgument::type(AssignTemplateVariables::class))->shouldBeCalled();
+        $subject->injectEventDispatcher($eventDispatcher->reveal());
+
         $year = $this->prophesize(Year::class);
         $view = $this->prophesize(ViewInterface::class);
         $view->assignMultiple([
@@ -159,6 +165,10 @@ class CalendarControllerTest extends TestCase
     {
         $subject = new CalendarController();
 
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(ProphetArgument::type(AssignTemplateVariables::class))->shouldBeCalled();
+        $subject->injectEventDispatcher($eventDispatcher->reveal());
+
         $month = $this->prophesize(Month::class);
         $view = $this->prophesize(ViewInterface::class);
         $view->assignMultiple([
@@ -222,6 +232,10 @@ class CalendarControllerTest extends TestCase
     {
         $subject = new CalendarController();
 
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(ProphetArgument::type(AssignTemplateVariables::class))->shouldBeCalled();
+        $subject->injectEventDispatcher($eventDispatcher->reveal());
+
         $week = $this->prophesize(Week::class);
         $view = $this->prophesize(ViewInterface::class);
         $view->assignMultiple([
@@ -306,6 +320,10 @@ class CalendarControllerTest extends TestCase
     {
         $subject = new CalendarController();
 
+        $eventDispatcher = $this->prophesize(EventDispatcherInterface::class);
+        $eventDispatcher->dispatch(ProphetArgument::type(AssignTemplateVariables::class))->shouldBeCalled();
+        $subject->injectEventDispatcher($eventDispatcher->reveal());
+
         $day = $this->prophesize(Day::class);
         $view = $this->prophesize(ViewInterface::class);
         $view->assignMultiple([

Tests/Unit/Events/AssignTemplateVariablesTest.php

@@ -0,0 +1,83 @@
+<?php
+
+namespace WerkraumMedia\Calendar\Tests\Unit\Events;
+
+/*
+ * Copyright (C) 2021 Daniel Siepmann <coding@daniel-siepmann.de>
+ *
+ * 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.
+ */
+
+use PHPUnit\Framework\TestCase;
+use WerkraumMedia\Calendar\Events\AssignTemplateVariables;
+
+/**
+ * @covers WerkraumMedia\Calendar\Events\AssignTemplateVariables
+ */
+class AssignTemplateVariablesTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function canBeCreated(): void
+    {
+        $subject = new AssignTemplateVariables(
+            []
+        );
+
+        self::assertInstanceOf(AssignTemplateVariables::class, $subject);
+    }
+
+    /**
+     * @test
+     */
+    public function returnsVariables(): void
+    {
+        $subject = new AssignTemplateVariables(
+            [
+                'variable1' => 'value1',
+            ]
+        );
+
+        $result = $subject->getVariables();
+
+        self::assertSame([
+            'variable1' => 'value1',
+        ], $result);
+    }
+
+    /**
+     * @test
+     */
+    public function newVariablesOverwriteExistingVariables(): void
+    {
+        $subject = new AssignTemplateVariables(
+            [
+                'variable1' => 'value1',
+            ]
+        );
+
+        $subject->setVariables([
+            'variable2' => 'value2',
+        ]);
+
+        $result = $subject->getVariables();
+
+        self::assertSame([
+            'variable2' => 'value2',
+        ], $result);
+    }
+}