feat: add ExifToolService

refs: ITZBUNDPHP-1261

Classes/EventListner/BeforeFileAddedEventListener.php

+<?php
+declare(strict_types=1);
+
+namespace ITZBund\GsbMetadataCleaner\Service;
+
+use ITZBund\GsbMetadataCleaner\Service\ExifToolService;
+use TYPO3\CMS\Core\Resource\Event\BeforeFileAddedEvent;
+
+class BeforeFileAddedEventListener
+{
+    private ExifToolService $exifToolService;
+
+    public function __construct(ExifToolService $exifToolService)
+    {
+        $this->exifToolService = $exifToolService;
+    }
+
+    public function __invoke(BeforeFileAddedEvent $event): void
+    {
+        $this->exifToolService->removeMetadata($event->getSourceFilePath() . $event->getFileName());
+    }
+}

Classes/Service/ExifToolService.php

+<?php
+declare(strict_types=1);
+
+namespace ITZBund\GsbMetadataCleaner\Service;
+
+use TYPO3\CMS\Core\Utility\CommandUtility;
+class ExifToolService
+{
+
+    public function removeMetadata(string $filePath): void
+    {
+        $command = sprintf(
+            '%s -all= -copyright= -tagsFromFile @ -copyright %s',
+            escapeshellarg($this->getExifToolPath()),
+            escapeshellarg($filePath)
+        );
+
+        CommandUtility::exec($command);
+    }
+    public function getExifData(string $filePath): array
+    {
+        $exifData = [];
+        $exifToolPath = $this->getExifToolPath();
+        if ($exifToolPath !== '') {
+            $exifData = $this->getExifDataFromExifTool($exifToolPath, $filePath);
+        }
+        return $exifData;
+    }
+
+    protected function getExifToolPath(): string
+    {
+        $exifToolPath = '';
+        $exifToolPathFromSettings = $GLOBALS['TYPO3_CONF_VARS']['EXTENSIONS']['gsb_metadata_cleaner']['exifToolPath'];
+        if ($exifToolPathFromSettings !== '') {
+            $exifToolPath = $exifToolPathFromSettings;
+        }
+        return $exifToolPath;
+    }
+
+    protected function getExifDataFromExifTool(string $exifToolPath, string $filePath): array
+    {
+        $exifData = [];
+        $exifToolCommand = $exifToolPath . ' -j -g -n -struct -charset utf8 -fast -m -q -s -t -c "%s" ' . $filePath;
+        $exifToolOutput = shell_exec($exifToolCommand);
+        if ($exifToolOutput !== null) {
+            $exifData = json_decode($exifToolOutput, true);
+        }
+        return $exifData;
+    }
+}