<?php

namespace Stemcell\Checkout\Observer;

use Magento\Framework\App\ObjectManager;
use Magento\Framework\Event\ObserverInterface;
use Psr\Log\LoggerInterface;

class FieldCopy implements ObserverInterface
{
    protected $objectCopyService;
    private \Magento\Quote\Model\ResourceModel\Quote\Item\Collection $quoteItemCollection;

    public function __construct(
        \Magento\Framework\DataObject\Copy $objectCopyService,
        \Magento\Quote\Model\ResourceModel\Quote\Item\Collection $quoteItemCollection
    ) {
        $this->objectCopyService = $objectCopyService;
        $this->quoteItemCollection = $quoteItemCollection;
    }

    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        /* @var $order \Magento\Sales\Model\Order */
        $order = $observer->getEvent()->getData('order');
        /* @var $quote \Magento\Quote\Model\Quote */
        $quote = $observer->getEvent()->getData('quote');
        $order->setData('customer_discount', $quote->getData('customer_discount'));
        $order->setData('salesperson_id', $quote->getData('salesperson_id'));
        $order->setDiscountAmount($quote->getData('discount_amount') + $order->getDiscountAmount());

        $orderItems = $order->getItems();
        $quoteItemsId = $items = [];
        foreach ($orderItems as $item) {
            $quoteItemsId[] = $item->getQuoteItemId();
        }

        $quoteItems = $this->quoteItemCollection->addFieldToFilter('item_id', ['in'=>$quoteItemsId])
            ->setItemObjectClass(\Magento\Quote\Model\Quote\Item::class)
            ->load();
        foreach ($quoteItems as $item) {
            /* @var $item \Magento\Quote\Model\Quote\Item */
            $items[$item->getItemId()] = $item;
        }
        $fields = ['lab_id', 'lab_code', 'pi_sap_id', 'cd', 'quote', 'pi', 'company', 'user', 'user_tel',
            'user_email', 'note', 'user_type', 'customer_discount_percent', 'salesperson_id', 'item_sort'
        ];
        foreach ($orderItems as $item) {
            foreach ($fields as $field) {
                $item->setData($field, $items[$item->getQuoteItemId()]->getData($field));
            }
        }

        return $this;
    }
}