[FEATURE] VH to group skills by domain

Classes/ViewHelpers/SkillGroupingViewHelper.php

@@ -0,0 +1,93 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SkillDisplay\SkilldisplayContent\ViewHelpers;
+
+/*
+ * 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 Closure;
+use Exception;
+use SkillDisplay\PHPToolKit\Verification\Link;
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+
+/**
+ * Usage:
+ *
+ * <sd:skillGrouping skillSet="{skillSet}" as="domainGroup">
+ *   {domainGroup.title}<br />
+ *   <f:for each="{domainGroup.skills}" as="skill">
+ *     {skill.name}<br />
+ *   </f:for>
+ * </sd>
+ */
+class SkillGroupingViewHelper extends AbstractViewHelper
+{
+    use CompileWithRenderStatic;
+
+    protected $escapeOutput = false;
+
+    public function initializeArguments()
+    {
+        $this->registerArgument('skills', 'array', 'An array of skills to group', false, []);
+        $this->registerArgument('skillSet', 'array', 'The skills of this skill set will be grouped', false, []);
+        $this->registerArgument('as', 'string', 'The name of the iteration variable', true);
+    }
+
+    public static function renderStatic(
+        array $arguments,
+        Closure $renderChildrenClosure,
+        RenderingContextInterface $renderingContext
+    ) {
+        $skills = $arguments['skills'];
+        $skillSet = $arguments['skillSet'];
+        $as = $arguments['as'];
+
+        if ($skillSet) {
+            $groups = self::group($skillSet['skills']);
+        } else {
+            $groups = self::group($skills);
+        }
+
+        $templateVariableContainer = $renderingContext->getVariableProvider();
+        $output = '';
+        foreach ($groups['values'] as $groups => $group) {
+            $templateVariableContainer->add($as, $group);
+            $output .= $renderChildrenClosure();
+            $templateVariableContainer->remove($as);
+        }
+        return $output;
+    }
+
+    protected static function group(array $skills): array
+    {
+        $result = [
+            /*
+             * [
+             *   'title' => 'Domain 1',
+             *   'skills' => [...skills]
+             * ]
+             */
+        ];
+
+        // todo group skills based on domainTag|title
+        return $result;
+    }
+}