1 files changed, 85 insertions, 0 deletions
diff --git a/apps/files/lib/Activity/Helper.php b/apps/files/lib/Activity/Helper.php
new file mode 100644
index 00000000000..d03d6e8e974
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+++ b/apps/files/lib/Activity/Helper.php
@@ -0,0 +1,85 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * 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, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\Files\Activity;
+
+use OCP\Files\Folder;
+use OCP\ITagManager;
+
+class Helper {
+	/** If a user has a lot of favorites the query might get too slow and long */
+	const FAVORITE_LIMIT = 50;
+
+	/** @var ITagManager */
+	protected $tagManager;
+
+	/**
+	 * @param ITagManager $tagManager
+	 */
+	public function __construct(ITagManager $tagManager) {
+		$this->tagManager = $tagManager;
+	}
+
+	/**
+	 * Returns an array with the favorites
+	 *
+	 * @param string $user
+	 * @return array
+	 * @throws \RuntimeException when too many or no favorites where found
+	 */
+	public function getFavoriteFilePaths($user) {
+		$tags = $this->tagManager->load('files', [], false, $user);
+		$favorites = $tags->getFavorites();
+
+		if (empty($favorites)) {
+			throw new \RuntimeException('No favorites', 1);
+		} else if (isset($favorites[self::FAVORITE_LIMIT])) {
+			throw new \RuntimeException('Too many favorites', 2);
+		}
+
+		// Can not DI because the user is not known on instantiation
+		$rootFolder = \OC::$server->getUserFolder($user);
+		$folders = $items = [];
+		foreach ($favorites as $favorite) {
+			$nodes = $rootFolder->getById($favorite);
+			if (!empty($nodes)) {
+				/** @var \OCP\Files\Node $node */
+				$node = array_shift($nodes);
+				$path = substr($node->getPath(), strlen($user . '/files/'));
+
+				$items[] = $path;
+				if ($node instanceof Folder) {
+					$folders[] = $path;
+				}
+			}
+		}
+
+		if (empty($items)) {
+			throw new \RuntimeException('No favorites', 1);
+		}
+
+		return [
+			'items' => $items,
+			'folders' => $folders,
+		];
+	}
+}