<?php

namespace PhpOffice\PhpSpreadsheet\Worksheet;

use GdImage;
use PhpOffice\PhpSpreadsheet\Exception;
use PhpOffice\PhpSpreadsheet\Shared\File;

class MemoryDrawing extends BaseDrawing
{
    // Rendering functions
    const RENDERING_DEFAULT = 'imagepng';
    const RENDERING_PNG = 'imagepng';
    const RENDERING_GIF = 'imagegif';
    const RENDERING_JPEG = 'imagejpeg';

    // MIME types
    const MIMETYPE_DEFAULT = 'image/png';
    const MIMETYPE_PNG = 'image/png';
    const MIMETYPE_GIF = 'image/gif';
    const MIMETYPE_JPEG = 'image/jpeg';

    const SUPPORTED_MIME_TYPES = [
        self::MIMETYPE_GIF,
        self::MIMETYPE_JPEG,
        self::MIMETYPE_PNG,
    ];

    /**
     * Image resource.
     *
     * @var null|GdImage|resource
     */
    private $imageResource;

    /**
     * Rendering function.
     *
     * @var string
     */
    private $renderingFunction;

    /**
     * Mime type.
     *
     * @var string
     */
    private $mimeType;

    /**
     * Unique name.
     *
     * @var string
     */
    private $uniqueName;

    /** @var null|resource */
    private $alwaysNull;

    /**
     * Create a new MemoryDrawing.
     */
    public function __construct()
    {
        // Initialise values
        $this->renderingFunction = self::RENDERING_DEFAULT;
        $this->mimeType = self::MIMETYPE_DEFAULT;
        $this->uniqueName = md5(mt_rand(0, 9999) . time() . mt_rand(0, 9999));
        $this->alwaysNull = null;

        // Initialize parent
        parent::__construct();
    }

    public function __destruct()
    {
        if ($this->imageResource) {
            $rslt = @imagedestroy($this->imageResource);
            // "Fix" for Scrutinizer
            $this->imageResource = $rslt ? null : $this->alwaysNull;
        }
    }

    public function __clone()
    {
        parent::__clone();
        $this->cloneResource();
    }

    private function cloneResource(): void
    {
        if (!$this->imageResource) {
            return;
        }

        $width = (int) imagesx($this->imageResource);
        $height = (int) imagesy($this->imageResource);

        if (imageistruecolor($this->imageResource)) {
            $clone = imagecreatetruecolor($width, $height);
            if (!$clone) {
                throw new Exception('Could not clone image resource');
            }

            imagealphablending($clone, false);
            imagesavealpha($clone, true);
        } else {
            $clone = imagecreate($width, $height);
            if (!$clone) {
                throw new Exception('Could not clone image resource');
            }

            // If the image has transparency...
            $transparent = imagecolortransparent($this->imageResource);
            if ($transparent >= 0) {
                $rgb = imagecolorsforindex($this->imageResource, $transparent);
                if (empty($rgb)) {
                    throw new Exception('Could not get image colors');
                }

                imagesavealpha($clone, true);
                $color = imagecolorallocatealpha($clone, $rgb['red'], $rgb['green'], $rgb['blue'], $rgb['alpha']);
                if ($color === false) {
                    throw new Exception('Could not get image alpha color');
                }

                imagefill($clone, 0, 0, $color);
            }
        }

        //Create the Clone!!
        imagecopy($clone, $this->imageResource, 0, 0, 0, 0, $width, $height);

        $this->imageResource = $clone;
    }

    /**
     * @param resource $imageStream Stream data to be converted to a Memory Drawing
     *
     * @throws Exception
     */
    public static function fromStream($imageStream): self
    {
        $streamValue = stream_get_contents($imageStream);
        if ($streamValue === false) {
            throw new Exception('Unable to read data from stream');
        }

        return self::fromString($streamValue);
    }

    /**
     * @param string $imageString String data to be converted to a Memory Drawing
     *
     * @throws Exception
     */
    public static function fromString(string $imageString): self
    {
        $gdImage = @imagecreatefromstring($imageString);
        if ($gdImage === false) {
            throw new Exception('Value cannot be converted to an image');
        }

        $mimeType = self::identifyMimeType($imageString);
        $renderingFunction = self::identifyRenderingFunction($mimeType);

        $drawing = new self();
        $drawing->setImageResource($gdImage);
        $drawing->setRenderingFunction($renderingFunction);
        $drawing->setMimeType($mimeType);

        return $drawing;
    }

    private static function identifyRenderingFunction(string $mimeType): string
    {
        switch ($mimeType) {
            case self::MIMETYPE_PNG:
                return self::RENDERING_PNG;
            case self::MIMETYPE_JPEG:
                return self::RENDERING_JPEG;
            case self::MIMETYPE_GIF:
                return self::RENDERING_GIF;
        }

        return self::RENDERING_DEFAULT;
    }

    /**
     * @throws Exception
     */
    private static function identifyMimeType(string $imageString): string
    {
        $temporaryFileName = File::temporaryFilename();
        file_put_contents($temporaryFileName, $imageString);

        $mimeType = self::identifyMimeTypeUsingExif($temporaryFileName);
        if ($mimeType !== null) {
            unlink($temporaryFileName);

            return $mimeType;
        }

        $mimeType = self::identifyMimeTypeUsingGd($temporaryFileName);
        if ($mimeType !== null) {
            unlink($temporaryFileName);

            return $mimeType;
        }

        unlink($temporaryFileName);

        return self::MIMETYPE_DEFAULT;
    }

    private static function identifyMimeTypeUsingExif(string $temporaryFileName): ?string
    {
        if (function_exists('exif_imagetype')) {
            $imageType = @exif_imagetype($temporaryFileName);
            $mimeType = ($imageType) ? image_type_to_mime_type($imageType) : null;

            return self::supportedMimeTypes($mimeType);
        }

        return null;
    }

    private static function identifyMimeTypeUsingGd(string $temporaryFileName): ?string
    {
        if (function_exists('getimagesize')) {
            $imageSize = @getimagesize($temporaryFileName);
            if (is_array($imageSize)) {
                $mimeType = $imageSize['mime'] ?? null;

                return self::supportedMimeTypes($mimeType);
            }
        }

        return null;
    }

    private static function supportedMimeTypes(?string $mimeType = null): ?string
    {
        if (in_array($mimeType, self::SUPPORTED_MIME_TYPES, true)) {
            return $mimeType;
        }

        return null;
    }

    /**
     * Get image resource.
     *
     * @return null|GdImage|resource
     */
    public function getImageResource()
    {
        return $this->imageResource;
    }

    /**
     * Set image resource.
     *
     * @param GdImage|resource $value
     *
     * @return $this
     */
    public function setImageResource($value)
    {
        $this->imageResource = $value;

        if ($this->imageResource !== null) {
            // Get width/height
            $this->width = (int) imagesx($this->imageResource);
            $this->height = (int) imagesy($this->imageResource);
        }

        return $this;
    }

    /**
     * Get rendering function.
     *
     * @return string
     */
    public function getRenderingFunction()
    {
        return $this->renderingFunction;
    }

    /**
     * Set rendering function.
     *
     * @param string $value see self::RENDERING_*
     *
     * @return $this
     */
    public function setRenderingFunction($value)
    {
        $this->renderingFunction = $value;

        return $this;
    }

    /**
     * Get mime type.
     *
     * @return string
     */
    public function getMimeType()
    {
        return $this->mimeType;
    }

    /**
     * Set mime type.
     *
     * @param string $value see self::MIMETYPE_*
     *
     * @return $this
     */
    public function setMimeType($value)
    {
        $this->mimeType = $value;

        return $this;
    }

    /**
     * Get indexed filename (using image index).
     */
    public function getIndexedFilename(): string
    {
        $extension = strtolower($this->getMimeType());
        $extension = explode('/', $extension);
        $extension = $extension[1];

        return $this->uniqueName . $this->getImageIndex() . '.' . $extension;
    }

    /**
     * Get hash code.
     *
     * @return string Hash code
     */
    public function getHashCode()
    {
        return md5(
            $this->renderingFunction .
            $this->mimeType .
            $this->uniqueName .
            parent::getHashCode() .
            __CLASS__
        );
    }
}

• [D] AutoFilter
• [D] Drawing
• [D] Table
• [F] AutoFilter.php
  Delete
• [F] AutoFit.php
  Delete
• [F] BaseDrawing.php
  Delete
• [F] CellIterator.php
  Delete
• [F] Column.php
  Delete
• [F] ColumnCellIterator.php
  Delete
• [F] ColumnDimension.php
  Delete
• [F] ColumnIterator.php
  Delete
• [F] Dimension.php
  Delete
• [F] Drawing.php
  Delete
• [F] HeaderFooter.php
  Delete
• [F] HeaderFooterDrawing.php
  Delete
• [F] Iterator.php
  Delete
• [F] MemoryDrawing.php
  Delete
• [F] PageBreak.php
  Delete
• [F] PageMargins.php
  Delete
• [F] PageSetup.php
  Delete
• [F] Protection.php
  Delete
• [F] Row.php
  Delete
• [F] RowCellIterator.php
  Delete
• [F] RowDimension.php
  Delete
• [F] RowIterator.php
  Delete
• [F] SheetView.php
  Delete
• [F] Table.php
  Delete
• [F] Validations.php
  Delete
• [F] Worksheet.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard