[FEATURE] Enrich the file reference response with meta data

Classes/Service/DataResolveService.php

@@ -26,8 +26,9 @@ namespace SGalinski\SgRest\Service;
  *  This copyright notice MUST APPEAR in all copies of the script!
  ***************************************************************/
 
-use SGalinski\SgImpulse\Domain\Model\Impulse;
 use SGalinski\SgRest\Utility\PathUtility;
+use TYPO3\CMS\Core\Resource\AbstractFile;
+use TYPO3\CMS\Core\Resource\File;
 use TYPO3\CMS\Core\SingletonInterface;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
 use TYPO3\CMS\Extbase\Domain\Model\FileReference;
@@ -141,7 +142,8 @@ class DataResolveService implements SingletonInterface {
 		if ($object instanceof FileReference && $identifier) {
 			return [
 				'href' => PathUtility::createFileUrl($object),
-				'uid' => $identifier
+				'uid' => $identifier,
+				'metadata' => $this->getFileMetaData($object)
 			];
 		}
 
@@ -264,4 +266,48 @@ class DataResolveService implements SingletonInterface {
 
 		return lcfirst(array_pop($classPath));
 	}
+
+	/**
+	 * Returns an array with meta data of the file.
+	 * - fileSize
+	 * - mime type
+	 * - name
+	 *
+	 * And for images also:
+	 * - height
+	 * - width
+	 * - aspect ratio
+	 *
+	 * @param FileReference $fileReference
+	 * @return array
+	 */
+	protected function getFileMetaData(FileReference $fileReference) {
+		$originalResource = $fileReference->getOriginalResource();
+		if (!$originalResource) {
+			return [];
+		}
+
+		/** @var File $originalFile */
+		$originalFile = $originalResource->getOriginalFile();
+		if (!$originalFile) {
+			return [];
+		}
+
+		$metadata = [
+			'fileSize' => $originalFile->getSize(),
+			'mimeType' => $originalFile->getMimeType(),
+			'name' => $originalFile->getName(),
+		];
+
+		if ($originalFile->getType() === AbstractFile::FILETYPE_IMAGE) {
+			$height = $originalFile->getProperty('height');
+			$width = $originalFile->getProperty('width');
+
+			$metadata['height'] = $height;
+			$metadata['width'] = $width;
+			$metadata['aspectRatio'] = $height / $width;
+		}
+
+		return $metadata;
+	}
 }