<?php
namespace DigiComp\Menu\ViewHelpers;

/*
 * This file is part of the DigiComp.Menu package.
 *
 * (c) digital competence
 *
 * This package is Open Source Software. For the full copyright and license
 * information, please view the LICENSE file which was distributed with this
 * source code.
 */

use Neos\FluidAdaptor\Core\ViewHelper\AbstractViewHelper;

/**
 * Helps to get useful template variables for process menus
 */
class ProgressViewHelper extends AbstractViewHelper
{

    protected $escapeOutput = false;

    /**
     * TODO: initializeArguments
     * @param array  $links
     * @param int    $activeStep
     * @param bool   $returnable
     * @param string $stepsAs
     * @param string $backLinkAs
     * @param string $activeStepAs
     * @param string $linksAs
     * @param string $activeStepLinkAs
     * @param int $offset
     * @param int $linkCount if given overrides count($links)
     *
     * @return string
     */
    public function render(
        array $links,
        $activeStep = 1,
        $returnable = true,
        $stepsAs = 'steps',
        $backLinkAs = 'backLink',
        $activeStepAs = 'activeStep',
        $linksAs = 'links',
        $activeStepLinkAs = 'activeStepLink',
        $offset = 1,
        $linkCount = null
    ) {
        //handling famous off by one
        $activeStep -= $offset;
        //make sure our array index is numeric
        $links = array_values($links);
        if (!$linkCount) {
            $linkCount = count($links);
        }
        foreach ($links as $i => &$link) {
            $link['completed'] = $activeStep > $i;
            $link['returnable'] = $returnable && $i < $activeStep;
        }
        $this->templateVariableContainer->add($linksAs, $links);
        $this->templateVariableContainer->add($stepsAs, $linkCount);
        $this->templateVariableContainer->add($activeStepAs, $activeStep + $offset);
        $this->templateVariableContainer->add($activeStepLinkAs, $links[$activeStep]);
        if (isset($links[$activeStep - 1])) {
            $this->templateVariableContainer->add($backLinkAs, $links[$activeStep - 1]);
        }
        return $this->renderChildren();
    }
}