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<?php
/**
 * Copyright (c) 2020 Kaliop Digital Commerce (https://digitalcommerce.kaliop.com) All Rights Reserved.
 * https://opensource.org/licenses/OSL-3.0  Open Software License (OSL 3.0)
 * Cnc
 * Radosław Stępień <[email protected]> <[email protected]>
 */
//phpcs:ignoreFile
namespace Cnc\Catalog\Model\Product\Pdf;

use Endroid\QrCode\ErrorCorrectionLevel;
use Endroid\QrCode\Exception\ValidationException;
use Endroid\QrCode\QrCode;
use Endroid\QrCode\Writer\PngWriter;
use Magento\Catalog\Model\Product;
use Magento\Framework\Exception\NoSuchEntityException;
use Magento\Store\Model\StoreManagerInterface;

class GenerateQrCode
{
    const QR_CODE_IMAGE_EXTENSION = '.png';

    const QR_CODE_IMAGE_PATH = '/pub/media/product_pdf/qr_codes/';

    /** @var PngWriter */
    private $pngWriter;

    /** @var StoreManagerInterface */
    private $storeManager;

    /** @var QrCode */
    private $qrCode;

    /**
     * GenerateQrCode constructor.
     * @param PngWriter $pngWriter
     * @param StoreManagerInterface $storeManager
     * @param QrCode $qrCode
     */
    public function __construct(
        PngWriter $pngWriter,
        StoreManagerInterface $storeManager,
        QrCode $qrCode
    ) {
        $this->pngWriter = $pngWriter;
        $this->storeManager = $storeManager;
        $this->qrCode = $qrCode;
    }

    /**
     * Generate QR code
     * @param Product $product
     * @return string
     * @throws ValidationException
     * @throws NoSuchEntityException
     */
    public function getQrCode(Product $product): string
    {
        $this->qrCode->setSize(400);
        $this->qrCode->setText($product->getProductUrl());
        $this->qrCode->setLogoWidth(200);
        $this->qrCode->setErrorCorrectionLevel(ErrorCorrectionLevel::HIGH());
        $this->qrCode->setForegroundColor(['r' => 0, 'g' => 0, 'b' => 0, 'a' => 0]);
        $this->qrCode->setBackgroundColor(['r' => 255, 'g' => 255, 'b' => 255, 'a' => 0]);
        $this->qrCode->setEncoding('UTF-8');

        $filename = $product->getSku() . self::QR_CODE_IMAGE_EXTENSION;
        $imagePath = BP . self::QR_CODE_IMAGE_PATH . $product->getSku() . '/' . $filename;
        $qrCodePath = substr(self::QR_CODE_IMAGE_PATH . $product->getSku() . '/' . $filename, 1);
        if (!file_exists($imagePath)) {
            if (!file_exists(BP . '/pub/media/product_pdf')) {
                mkdir(BP . '/pub/media/product_pdf');
            }
            if (!file_exists(BP . '/pub/media/product_pdf/qr_codes')) {
                mkdir(BP . '/pub/media/product_pdf/qr_codes');
            }
            if (!file_exists(BP . self::QR_CODE_IMAGE_PATH . $product->getSku())) {
                mkdir(BP . self::QR_CODE_IMAGE_PATH . $product->getSku());
            }
            $localImageFile = fopen($imagePath, 'w');
            $pngData = $this->pngWriter->writeString($this->qrCode);
            fwrite($localImageFile, $pngData);
            fclose($localImageFile);
        }

        return $this->storeManager->getStore()->getBaseUrl() . $qrCodePath;
    }
}