recreate project

vendor/paypal/rest-api-sdk-php/sample/sale/GetSale.php

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+<?php
+
+// # Get Sale sample 
+// Sale transactions are nothing but completed payments.
+// This sample code demonstrates how you can retrieve 
+// details of completed Sale Transaction.
+// API used: /v1/payments/sale/{sale-id}
+
+/** @var Payment $payment */
+$payment = require __DIR__ . '/../payments/CreatePayment.php';
+use PayPal\Api\Payment;
+use PayPal\Api\Sale;
+
+// ### Get Sale From Created Payment
+// You can retrieve the sale Id from Related Resources for each transactions.
+$transactions = $payment->getTransactions();
+$relatedResources = $transactions[0]->getRelatedResources();
+$sale = $relatedResources[0]->getSale();
+$saleId = $sale->getId();
+
+try {
+    // ### Retrieve the sale object
+    // Pass the ID of the sale
+    // transaction from your payment resource.
+    $sale = Sale::get($saleId, $apiContext);
+} catch (Exception $ex) {
+    // NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
+ 	ResultPrinter::printError("Look Up A Sale", "Sale", $sale->getId(), null, $ex);
+    exit(1);
+}
+
+// NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
+ ResultPrinter::printResult("Look Up A Sale", "Sale", $sale->getId(), null, $sale);
+
+return $sale;

vendor/paypal/rest-api-sdk-php/sample/sale/RefundSale.php

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+<?php
+
+// # Sale Refund Sample
+// This sample code demonstrate how you can 
+// process a refund on a sale transaction created 
+// using the Payments API.
+// API used: /v1/payments/sale/{sale-id}/refund
+
+/** @var Sale $sale */
+$sale = require 'GetSale.php';
+$saleId = $sale->getId();
+
+use PayPal\Api\Amount;
+use PayPal\Api\Refund;
+use PayPal\Api\Sale;
+
+// ### Refund amount
+// Includes both the refunded amount (to Payer) 
+// and refunded fee (to Payee). Use the $amt->details
+// field to mention fees refund details.
+$amt = new Amount();
+$amt->setCurrency('USD')
+    ->setTotal(0.01);
+
+// ### Refund object
+$refund = new Refund();
+$refund->setAmount($amt);
+
+// ###Sale
+// A sale transaction.
+// Create a Sale object with the
+// given sale transaction id.
+$sale = new Sale();
+$sale->setId($saleId);
+try {
+    // Create a new apiContext object so we send a new
+    // PayPal-Request-Id (idempotency) header for this resource
+    $apiContext = getApiContext($clientId, $clientSecret);
+
+    // Refund the sale
+    // (See bootstrap.php for more on `ApiContext`)
+    $refundedSale = $sale->refund($refund, $apiContext);
+} catch (Exception $ex) {
+    // NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
+ 	ResultPrinter::printError("Refund Sale", "Sale", $refundedSale->getId(), $refund, $ex);
+    exit(1);
+}
+
+// NOTE: PLEASE DO NOT USE RESULTPRINTER CLASS IN YOUR ORIGINAL CODE. FOR SAMPLE ONLY
+ ResultPrinter::printResult("Refund Sale", "Sale", $refundedSale->getId(), $refund, $refundedSale);
+
+return $refundedSale;