mirror of
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78 lines
2.2 KiB
PHP
78 lines
2.2 KiB
PHP
<?php
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namespace App\Services;
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use chillerlan\QRCode\QRCode;
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use chillerlan\QRCode\QROptions;
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use Illuminate\Support\Facades\Log;
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use Zxing\ChecksumException;
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use Zxing\FormatException;
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use Zxing\NotFoundException;
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use Zxing\QrReader;
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class QrCodeService
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{
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/**
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* Encode a string into a QR code image
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*
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* @param string $data The string to encode
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* @return mixed
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*/
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public static function encode(string $data)
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{
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$options = new QROptions([
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'quietzoneSize' => 2,
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'scale' => 8,
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]);
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$qrcode = new QRCode($options);
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Log::info('data encoded to QR code');
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return $qrcode->render($data);
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}
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/**
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* Decode an uploaded QR code image
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*
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* @return string
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*/
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public static function decode(\Illuminate\Http\UploadedFile $file)
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{
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$qrcode = app()->make(QrReader::class, [
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'imgSource' => $file->get(),
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'sourceType' => QrReader::SOURCE_TYPE_BLOB,
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]);
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$text = $qrcode->text();
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if (! $text) {
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$text = $qrcode->text([
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'TRY_HARDER' => true,
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'NR_ALLOW_SKIP_ROWS' => 0,
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]);
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}
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// At this point, if we do not have a text, QR code cannot be detected or decoded
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// so we check the error to provide the user a relevant error message
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if (! $text) {
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switch (get_class($qrcode->getError())) {
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case NotFoundException::class:
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throw new \App\Exceptions\InvalidQrCodeException(__('errors.cannot_detect_qrcode_in_image'));
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case FormatException::class:
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throw new \App\Exceptions\InvalidQrCodeException(__('errors.cannot_decode_detected_qrcode'));
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case ChecksumException::class:
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throw new \App\Exceptions\InvalidQrCodeException(__('errors.qrcode_has_invalid_checksum'));
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default:
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throw new \App\Exceptions\InvalidQrCodeException(__('errors.no_readable_qrcode'));
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}
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}
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$data = urldecode($text);
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Log::info('QR code decoded');
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return $data;
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}
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}
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