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<?php namespace Framework\PayPal;
use Framework\Shop\PaymentInterface;
use Framework\Shop\Product;
use PayPal\Api\Item;
use PayPal\Api\ItemList;
use PayPal\Api\Payer;
use PayPal\Api\Payment as PayPalPayment;
use PayPal\Api\RedirectUrls;
use PayPal\Api\Transaction;
use PayPal\Auth\OAuthTokenCredential;
use PayPal\Rest\ApiContext;
class Payment implements PaymentInterface
{
    protected Config $config;
    protected ApiContext $apiContext;
    protected Transaction $transaction;
    public function __construct(Config $config)
    {
        $this->config = $config;
        $this->apiContext = $this->getApiContext(
            $config->clientId,
            $config->clientSecret,
            $config->environment === 'sandbox'
        );
    }
    protected function getApiContext(
        string $clientId,
        string $clientSecret,
        bool $sandbox = false
    ) : ApiContext {
        $apiContext = new ApiContext(
            new OAuthTokenCredential(
                $clientId,
                $clientSecret
            )
        );
        $apiContext->setConfig(
            [
                'mode' => $sandbox ? 'sandbox' : 'live',
                'log.LogEnabled' => $this->config->logActive,
                'log.FileName' => $this->config->logPath,
                'log.LogLevel' => $this->config->environment === 'sandbox' ? 'DEBUG' : 'INFO',
                // PLEASE USE `INFO` LEVEL FOR LOGGING IN LIVE ENVIRONMENTS
                'cache.enabled' => true,
                //'cache.FileName' => '/PaypalCache' // for determining paypal cache directory
                // 'http.CURLOPT_CONNECTTIMEOUT' => 30
                // 'http.headers.PayPal-Partner-Attribution-Id' => '123123123'
                //'log.AdapterFactory' => '\PayPal\Log\DefaultLogFactory' // Factory class implementing \PayPal\Log\PayPalLogFactory
            ]
        );
        return $apiContext;
    }
    /**
     * @param array|Product[] $products
     * @param string|null     $invoice_number
     * @param float           $shipping
     */
    public function setOrder(array $products, string $invoice_number = null, float $shipping = 0)
    {
        $items = [];
        foreach ($products as $key => $product) {
            $items[$key] = new Item();
            $items[$key]->setName($product->title)
                ->setPrice($product->price)
                ->setQuantity($product->quantity)
                ->setCurrency($this->config->currency);
        }
        $itemList = new ItemList();
        $itemList->setItems($items);
        $subtotal = 0;
        foreach ($items as $item) {
            $subtotal += $item->getQuantity() * $item->getPrice();
        }
        $details = new \PayPal\Api\Details();
        $details->setShipping($shipping)
            // ->setTax($tax)
            ->setSubtotal($subtotal);
        $amount = new \PayPal\Api\Amount();
        $amount->setCurrency($this->config->currency)
            ->setTotal($subtotal + $shipping /*+ $tax*/)
            ->setDetails($details);
        $this->transaction = new Transaction();
        $this->transaction->setAmount($amount)
            ->setItemList($itemList)
            //->setDescription("Payment description")
            ->setInvoiceNumber($invoice_number);
    }
    public function getLink() : string
    {
        $payer = new Payer();
        $payer->setPaymentMethod('paypal');
        $redirectUrls = new RedirectUrls();
        $redirectUrls->setReturnUrl($this->config->returnURL)
            ->setCancelUrl($this->config->cancelURL);
        $payment = new PayPalPayment();
        $payment->setIntent('order')
            ->setPayer($payer)
            ->setRedirectUrls($redirectUrls)
            ->setTransactions([$this->transaction]);
        $payment->create($this->apiContext);
        return $payment->getApprovalLink();
    }
}