95 lines
3.6 KiB
PHP
95 lines
3.6 KiB
PHP
<?php
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namespace App\Lib;
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use App\Exceptions\CafelApiImageFetchException;
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use Illuminate\Http\File;
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use Illuminate\Support\Facades\File as FacadesFile;
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use SplFileInfo;
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use Symfony\Component\Mime\MimeTypes;
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class FileHelper
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{
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/**
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* Generate from blob
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*
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* @param string $mimeType
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* @param string $blob
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* @param string|null $fileName
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* @return SplFileInfo
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* @throws \ErrorException If writing to temp file failed.
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*/
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public static function fromBlob(string $mimeType, string $blob, string $fileName = null): SplFileInfo
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{
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// * Create temp file and get its absolute path
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if (!($tempFile = tmpfile())) {
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new \ErrorException('Could not create temp file');
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}
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$tempFilePath = stream_get_meta_data($tempFile)['uri'];
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// * Save file data in file
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if (!(file_put_contents($tempFilePath, $blob))) {
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new \ErrorException('Could not write on temp file');
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}
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$tempFileObject = new File($tempFilePath);
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$filePath = $fileName ?? $tempFileObject->getFilename();
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$mimeType = $tempFileObject->getMimeType() ?? $mimeType;
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$extension = collect((new MimeTypes())->getExtensions($mimeType))->first();
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if (!FacadesFile::put(\storage_path("tmp/$filePath.$extension"), $blob)) {
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new \ErrorException('Could not write on temp file');
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}
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// Close this file after response is sent.
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// Closing the file will cause to remove it from temp director!
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app()->terminating(function () use ($tempFile) {
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fclose($tempFile);
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});
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return new SplFileInfo(\storage_path("tmp/$filePath.$extension"));
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}
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/**
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* Generate from base64 blob
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*
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* @param resource $tempFile A temp file where to store data.
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* @param string $fileName The target filename.
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* @param string $extension The file extension to use.
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* @param string $base64String The base64 encode picture.
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* @return SplFileInfo
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* @throws \ErrorException If writing to temp file failed.
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* @throws \App\Exceptions\CafelApiImageFetchException If invalid image was given or ext could not be confirmed.
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*/
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public static function fromBase64($tempFile, string $fileName, string $extension, string $base64String): SplFileInfo
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{
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$tempFilePath = stream_get_meta_data($tempFile)['uri'];
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if (!($blob = \base64_decode($base64String, true))) {
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throw new CafelApiImageFetchException("Invalid base64 string given for image '$fileName'");
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}
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// * Save file data in file
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if (!(file_put_contents($tempFilePath, $blob))) {
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throw new \ErrorException('Could not write on temp file');
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}
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$tempFileObject = new File($tempFilePath);
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$filePath = $fileName ?? $tempFileObject->getFilename();
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$mimeType = $tempFileObject->getMimeType();
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$guessedExt = $mimeType ? collect((new MimeTypes())->getExtensions($mimeType))->first() : $extension;
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// * Ignore jpeg that is guessed as jpg
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if ($guessedExt !== $extension and !($extension === 'jpeg' && $guessedExt === 'jpg')) {
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throw new CafelApiImageFetchException(
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"Given extension '$extension' could not be confirmed, found '$guessedExt' for image '$fileName'"
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);
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}
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if (!FacadesFile::put(\storage_path("tmp/$filePath.$extension"), $blob)) {
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throw new \ErrorException('Could not write on temp file');
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}
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return new SplFileInfo(\storage_path("tmp/$filePath.$extension"));
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}
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}
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