Email preview magento2

Emailpreivew.php

<?php
namespace Vendor\Extenssion\Helper;

use Magento\Framework\App\Area;

class Emailpreivew extends \Magento\Framework\App\Helper\AbstractHelper
{
    /**
    * @var \Magento\Framework\App\Config\ScopeConfigInterface
    */
    protected $_scopeConfig;
    /**
    * Store manager
    *
    * @var \Magento\Store\Model\StoreManagerInterface
    */
    protected $_storeManager;
    /**
    * @var \Magento\Framework\Translate\Inline\StateInterface
    */
    protected $inlineTranslation;
    /**
    * @var \Magento\Framework\Mail\Template\TransportBuilder
    */
    protected $_transportBuilder;
    protected $orderRepository;
    protected $shipmentModel;

    /**
    * @param Magento\Framework\App\Helper\Context $context
    * @param Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig
    * @param Magento\Store\Model\StoreManagerInterface $storeManager
    * @param Magento\Framework\Translate\Inline\StateInterface $inlineTranslation
    * @param Magento\Framework\Mail\Template\TransportBuilder $transportBuilder
    */
    public function __construct(
        \Magento\Framework\App\Helper\Context $context,
        \Magento\Store\Model\StoreManagerInterface $storeManager,
        \Magento\Framework\Translate\Inline\StateInterface $inlineTranslation,
        \Magento\Framework\Mail\Template\TransportBuilder $transportBuilder,
        \Magento\Sales\Api\OrderRepositoryInterface $orderRepository,
        \Magento\Sales\Model\Order\Shipment $shipmentModel,
        \Magento\Framework\App\State $state
        ) {
        $this->_scopeConfig = $context;
        parent::__construct($context);
        $this->_storeManager = $storeManager;
        $this->inlineTranslation = $inlineTranslation;
        $this->_transportBuilder = $transportBuilder;
        $this->orderRepository = $orderRepository;
        $this->shipmentModel = $shipmentModel;
        $state->setAreaCode('frontend');
    }
    /**
    * @param string $path
    * @param int $storeId
    * @return mixed
    */
    protected function getConfigValue($path, $storeId)
    {
        return $this->scopeConfig->getValue(
            $path,
            \Magento\Store\Model\ScopeInterface::SCOPE_STORE,
            $storeId
            );
    }
    public function getOrder($id)
        {
            return $this->orderRepository->get($id);
        }
        public function getShipment($id)
        {
            return $this->shipmentModel->load($id);
        }
    /**
    * Return store
    *
    * @return Store
    */
    public function getStore()
    {
        return $this->_storeManager->getStore();
    }

    public function sendEmailReport(
        $template
        ) {
        $this->inlineTranslation->suspend();
        $templateId = $this->getConfigValue($template, $this->getStore()->getStoreId());
        $sender = ['name' => 'test', 'email' => '[email protected]'];
        $templateParams['order'] = $this->getOrder(201);
        $templateParams['shipment'] = $this->getShipment(2);
        $transport = $this->_transportBuilder->setTemplateIdentifier($templateId)
        ->setTemplateOptions(
            [
            'area' => Area::AREA_FRONTEND,
            'store' => $this->getStore()->getId(),
            ]
            )
        ->setTemplateVars($templateParams)
        ->setFrom($sender)
        ->addTo('[email protected]')
         ->getTransport();
         echo '<pre>';print_r($transport->getMessage()->getBody()->generateMessage());exit;
        $transport->sendMessage();
        $this->inlineTranslation->resume();

        return $this;
    }
}