invoiceninja/app/Import/Transformers/Csv/PaymentTransformer.php

<?php
/**
 * client Ninja (https://clientninja.com).
 *
 * @link https://github.com/clientninja/clientninja source repository
 *
 * @copyright Copyright (c) 2021. client Ninja LLC (https://clientninja.com)
 *
 * @license https://www.elastic.co/licensing/elastic-license
 */

namespace App\Import\Transformers\Csv;

use App\Import\ImportException;
use App\Import\Transformers\BaseTransformer;

/**
 * Class PaymentTransformer.
 */
class PaymentTransformer extends BaseTransformer {
	/**
	 * @param $data
	 *
	 * @return array
	 */
	public function transform( $data ) {
		$client_id =
			$this->getClient( $this->getString( $data, 'payment.client_id' ), $this->getString( $data, 'payment.client_id' ) );

		if ( empty( $client_id ) ) {
			throw new ImportException( 'Could not find client.' );
		}

		$transformed = [
			'company_id'            => $this->maps['company']->id,
			'number'                => $this->getString( $data, 'payment.number' ),
			'user_id'               => $this->getString( $data, 'payment.user_id' ),
			'amount'                => $this->getFloat( $data, 'payment.amount' ),
			'refunded'              => $this->getFloat( $data, 'payment.refunded' ),
			'applied'               => $this->getFloat( $data, 'payment.applied' ),
			'transaction_reference' => $this->getString( $data, 'payment.transaction_reference ' ),
			'date'                  => $this->getString( $data, 'payment.date' ),
			'private_notes'         => $this->getString( $data, 'payment.private_notes' ),
			'custom_value1'         => $this->getString( $data, 'payment.custom_value1' ),
			'custom_value2'         => $this->getString( $data, 'payment.custom_value2' ),
			'custom_value3'         => $this->getString( $data, 'payment.custom_value3' ),
			'custom_value4'         => $this->getString( $data, 'payment.custom_value4' ),
			'client_id'             => $client_id,
		];


		if ( isset( $data['payment.invoice_number'] ) &&
			$invoice_id = $this->getInvoiceId( $data['payment.invoice_number'] ) ) {
			$transformed['invoices'] = [
				[
					'invoice_id' => $invoice_id,
					'amount'     => $transformed['amount'] ?? null,
				],
			];
		}

		return $transformed;
	}
}