Implement attachment backend with a first module for app data file upload

Signed-off-by: Julius Härtl <jus@bitgrid.net>
2018-06-11 10:03:28 +02:00
parent e4863b6d8d
commit 45c7241daf
13 changed files with 743 additions and 4 deletions
--- a/lib/Service/FileService.php
+++ b/lib/Service/FileService.php
@@ -0,0 +1,152 @@
+<?php
+/**
+ * @copyright Copyright (c) 2018 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\Deck\Service;
+
+
+use OCA\Deck\Db\Attachment;
+use OCP\AppFramework\Http\FileDisplayResponse;
+use OCP\Files\IAppData;
+use OCP\Files\NotFoundException;
+use OCP\Files\NotPermittedException;
+use OCP\Files\SimpleFS\ISimpleFile;
+use OCP\Files\SimpleFS\ISimpleFolder;
+use OCP\IL10N;
+use OCP\IRequest;
+
+
+class FileService implements IAttachmentService {
+
+	private $l10n;
+	private $appData;
+	private $request;
+
+	public function __construct(
+		IL10N $l10n,
+		IAppData $appData,
+		IRequest $request
+	) {
+		$this->l10n = $l10n;
+		$this->appData = $appData;
+		$this->request = $request;
+	}
+
+	/**
+	 * @param Attachment $attachment
+	 * @return ISimpleFile
+	 * @throws NotFoundException
+	 * @throws NotPermittedException
+	 */
+	private function getFileForAttachment(Attachment $attachment) {
+		return $this->getFolder($attachment)
+			->getFile($attachment->getData());
+	}
+
+	/**
+	 * @param Attachment $attachment
+	 * @return ISimpleFolder
+	 * @throws NotPermittedException
+	 */
+	private function getFolder(Attachment $attachment) {
+		$folderName = 'file-card-' . (int)$attachment->getCardId();
+		try {
+			$folder = $this->appData->getFolder($folderName);
+		} catch (NotFoundException $e) {
+			$folder = $this->appData->newFolder($folderName);
+		}
+		return $folder;
+	}
+
+	public function extendData(Attachment $attachment) {
+		try {
+			$file = $this->getFileForAttachment($attachment);
+		} catch (NotFoundException $e) {
+			// TODO: log error
+			return $attachment;
+		} catch (NotPermittedException $e) {
+			return $attachment;
+		}
+		$attachment->setExtendedData([
+			'filesize' => $file->getSize(),
+			'mimetype' => $file->getMimeType(),
+			'info' => pathinfo($file->getName())
+		]);
+		return $attachment;
+	}
+
+	public function create(Attachment $attachment) {
+		$file = $this->request->getUploadedFile('file');
+		$cardId = $attachment->getCardId();
+		$error = null;
+		$phpFileUploadErrors = [
+			UPLOAD_ERR_OK => $this->l10n->t('The file was uploaded'),
+			UPLOAD_ERR_INI_SIZE => $this->l10n->t('The uploaded file exceeds the upload_max_filesize directive in php.ini'),
+			UPLOAD_ERR_FORM_SIZE => $this->l10n->t('The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form'),
+			UPLOAD_ERR_PARTIAL => $this->l10n->t('The file was only partially uploaded'),
+			UPLOAD_ERR_NO_FILE => $this->l10n->t('No file was uploaded'),
+			UPLOAD_ERR_NO_TMP_DIR => $this->l10n->t('Missing a temporary folder'),
+			UPLOAD_ERR_CANT_WRITE => $this->l10n->t('Could not write file to disk'),
+			UPLOAD_ERR_EXTENSION => $this->l10n->t('A PHP extension stopped the file upload'),
+		];
+
+		if (empty($file)) {
+			$error = $this->l10n->t('No file uploaded');
+		}
+		if (!empty($file) && array_key_exists('error', $file) && $file['error'] !== UPLOAD_ERR_OK) {
+			$error = $phpFileUploadErrors[$file['error']];
+		}
+		if ($error !== null) {
+			throw new \RuntimeException($error);
+		}
+
+		$folder = $this->getFolder($attachment);
+		$fileName = $file['name'];
+		if ($folder->fileExists($fileName)) {
+			throw new \Exception('File already exists.');
+		}
+		$target = $folder->newFile($fileName);
+		$target->putContent(file_get_contents($file['tmp_name'], 'r'));
+
+		$attachment->setData($fileName);
+	}
+
+	public function update(Attachment $attachment) {
+		$file = $this->getFileForAttachment($attachment);
+
+	}
+
+	public function delete(Attachment $attachment) {
+		try {
+			$file = $this->getFileForAttachment($attachment);
+			$file->delete();
+		} catch (NotFoundException $e) {
+		}
+	}
+
+	public function display(Attachment $attachment) {
+		$file = $this->getFileForAttachment($attachment);
+		$response = new FileDisplayResponse($file);
+		$response->addHeader('Content-Type', $file->getMimeType());
+		return $response;
+	}
+}