<?php

namespace EP\EpTheme\ViewHelpers;

use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

class ThemeClassesViewHelper extends AbstractViewHelper
{
    public function initializeArguments(): void
    {
        parent::initializeArguments();

        $this->registerArgument('key', 'string', 'The theme key', false, 'ep');
        $this->registerArgument('classes', 'array', 'The classes to apply per theme key', true);
    }

    /**
     * @param array $arguments
     * @param \Closure $renderChildrenClosure
     * @param RenderingContextInterface $renderingContext
     * @return mixed
     */
    public function render()
    {
        $themeKey = $this->arguments['key'];
        if (!array_key_exists((string) $themeKey, $this->arguments['classes'])) {
            return '';
        }
        return $this->arguments['classes'][$themeKey];
    }
}