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<?php
namespace PragmaRX\Google2FAQRCode;
use BaconQrCode\Renderer\Image\Png;
use BaconQrCode\Renderer\Image\RendererInterface;
use BaconQrCode\Writer as BaconQrCodeWriter;
use PragmaRX\Google2FA\Google2FA as Google2FAPackage;
use BaconQrCode\Renderer\ImageRenderer;
use BaconQrCode\Renderer\Image\ImageBackEndInterface;
use BaconQrCode\Renderer\Image\ImagickImageBackEnd;
use BaconQrCode\Renderer\RendererStyle\RendererStyle;
use BaconQrCode\Writer;
class Google2FA extends Google2FAPackage
{
/**
* @var ImageBackEndInterface|RendererInterface|null $imageBackEnd
*/
protected $imageBackEnd;
/**
* Google2FA constructor.
*
* @param ImageBackEndInterface|RendererInterface|null $imageBackEnd
*/
public function __construct($imageBackEnd = null)
{
if ($this->getBaconQRCodeVersion() === 1) {
if ($imageBackEnd instanceof RendererInterface) {
$this->imageBackEnd = $imageBackEnd;
} else {
$this->imageBackEnd = new Png();
}
} else {
if ($imageBackEnd instanceof ImageBackEndInterface) {
$this->imageBackEnd = $imageBackEnd;
} else {
$this->imageBackEnd = new ImagickImageBackEnd();
}
}
}
/**
* Generates a QR code data url to display inline.
*
* @param string $company
* @param string $holder
* @param string $secret
* @param int $size
* @param string $encoding Default to UTF-8
*
* @return string
*/
public function getQRCodeInline($company, $holder, $secret, $size = 200, $encoding = 'utf-8')
{
return $this->getBaconQRCodeVersion() === 1
? $this->getQRCodeInlineV1($company, $holder, $secret, $size, $encoding)
: $this->getQRCodeInlineV2($company, $holder, $secret, $size, $encoding);
}
/**
* Generates a QR code data url to display inline for Bacon QRCode v1
*
* @param string $company
* @param string $holder
* @param string $secret
* @param int $size
* @param string $encoding Default to UTF-8
*
* @return string
*/
public function getQRCodeInlineV1($company, $holder, $secret, $size = 200, $encoding = 'utf-8')
{
$url = $this->getQRCodeUrl($company, $holder, $secret);
$renderer = $this->imageBackEnd;
$renderer->setWidth($size);
$renderer->setHeight($size);
$bacon = new BaconQrCodeWriter($renderer);
$data = $bacon->writeString($url, $encoding);
if ($this->imageBackEnd instanceof Png) {
return 'data:image/png;base64,'.base64_encode($data);
}
return $data;
}
/**
* Generates a QR code data url to display inline for Bacon QRCode v2
*
* @param string $company
* @param string $holder
* @param string $secret
* @param int $size
* @param string $encoding Default to UTF-8
*
* @return string
*/
public function getQRCodeInlineV2($company, $holder, $secret, $size = 200, $encoding = 'utf-8')
{
$renderer = new ImageRenderer(
(new RendererStyle($size))->withSize($size),
$this->imageBackEnd
);
$bacon = new Writer($renderer);
$data = $bacon->writeString(
$this->getQRCodeUrl($company, $holder, $secret),
$encoding
);
if ($this->imageBackEnd instanceof ImagickImageBackEnd) {
return 'data:image/png;base64,'.base64_encode($data);
}
return $data;
}
/**
* Get Bacon QRCode current version
*
* @return int
*/
public function getBaconQRCodeVersion()
{
return class_exists('BaconQrCode\Renderer\Image\Png') && class_exists('BaconQrCode\Writer')
? 1
: 2;
}
}