<?php
declare(strict_types=1);

namespace Esun\Reward\Block\Order;

use Magento\Framework\DataObject;
use Magento\Framework\View\Element\Template;

class RewardTotals extends Template
{
    public function initTotals(): self
    {
        $parent = $this->getParentBlock(); $source = $parent?->getSource();
        if ($parent && $source && (float)$source->getData('reward_discount_amount') > 0) {
            $parent->addTotal(new DataObject([
                'code' => 'reward_discount',
                'value' => -(float)$source->getData('reward_discount_amount'),
                'label' => __('Points Discount (%1 points)', (int)$source->getData('reward_points_used'))
            ]), 'discount');
        }
        return $this;
    }
}