WIP: add searchController

apps/files/appinfo/routes.php

@@ -59,6 +59,11 @@
 				'url' => '/api/v1/showhidden',
 				'verb' => 'POST'
 			),
+			[
+				'name' => 'Search#search',
+				'url' => '/search',
+				'verb' => 'GET',
+			],
 			[
 				'name' => 'view#index',
 				'url' => '/',

apps/files/lib/AppInfo/Application.php

@@ -23,6 +23,7 @@
 namespace OCA\Files\AppInfo;
 
 use OCA\Files\Controller\ApiController;
+use OCA\Files\Controller\SearchController;
 use OCP\AppFramework\App;
 use \OCA\Files\Service\TagService;
 use \OCP\IContainer;
@@ -49,6 +50,16 @@ public function __construct(array $urlParams=array()) {
 			);
 		});
 
+		$container->registerService('SearchController', function (IContainer $c) use ($server) {
+			return new SearchController(
+				$c->query('AppName'),
+				$c->query('Request'),
+				$server->getUserSession(),
+				$server->getConfig(),
+				$server->getRootFolder()
+			);
+		});
+
 		$container->registerService('ViewController', function (IContainer $c) use ($server) {
 			return new ViewController(
 				$c->query('AppName'),

apps/files/lib/Controller/SearchController.php

@@ -0,0 +1,209 @@
+<?php
+/**
+ * @author Georg Ehrke <georg@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, ownCloud, Inc.
+ * @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\Controller;
+
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Controller;
+use OCP\Files\NotFoundException;
+use OCP\Files\Search\IIndexer;
+use OCP\IConfig;
+use OCP\IRequest;
+use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\Http\DataDisplayResponse;
+use OCP\AppFramework\Http\Response;
+use OCP\AppFramework\Http\NotFoundResponse;
+use OCP\Files\Folder;
+use OCP\IUserSession;
+use \OCP\Files\IRootFolder;
+use OCP\Search\ScoredResult;
+use Zend_Search_Lucene_Search_Query_Boolean;
+use Zend_Search_Lucene_Search_Query_Phrase;
+use Zend_Search_Lucene_Search_Query_MultiTerm;
+use Zend_Search_Lucene_Search_Query_Term;
+use Zend_Search_Lucene_Index_Term;
+
+
+/**
+ * Class SearchController
+ *
+ * @package OCA\Files\Controller
+ */
+class SearchController extends Controller {
+
+	/** IUserSession */
+	private $userSession;
+	/** string */
+	private $userId;
+	/** IConfig */
+	private $config;
+	/** IRootFolder */
+	protected $rootFolder;
+
+	/**
+	 * SearchController constructor.
+	 *
+	 * @param string $appName
+	 * @param IRequest $request
+	 * @param IUserSession $userSession
+	 * @param IConfig $config
+	 * @param IRootFolder $rootFolder
+	 */
+	public function __construct($appName,
+								IRequest $request,
+								IUserSession $userSession,
+								IConfig $config,
+								IRootFolder $rootFolder) {
+		parent::__construct($appName, $request);
+		$this->userSession = $userSession;
+		$this->config = $config;
+		$this->rootFolder = $rootFolder;
+
+		$user = $this->userSession->getUser();
+		if (!$user) {
+			// TODO - throw some exception
+		}
+
+		$this->userId = $user->getUID();
+	}
+
+	/**
+	 * @NoCSRFRequired
+	 * @NoAdminRequired
+	 *
+	 * @param string $phrase phrase to search
+	 * @param string $path limit path to search
+	 * @param integer $page page of pagination
+	 * @param integer $size size of pagination
+	 */
+	public function search($phrase, $path='/', $page=null, $size=null) {
+		if ($path === '') {
+			$path = '/';
+		}
+		$path = '/' . $this->userId . '/files' . $path;
+
+		try {
+			$query = $this->getQuery($phrase, $path);
+		} catch(\Exception $ex) {
+			return;
+			// TODO Handle exception
+		}
+
+		$indexStorageMap = [];
+
+		// Collect mounts to search
+		try {
+			$mounts = $this->rootFolder->getMountsIn($path);
+			foreach($mounts as $mount) {
+				/** @var \OCP\Files\Mount\IMountPoint $mount */
+				/** @var \OCP\Files\Storage $storage */
+				$storage = $mount->getStorage();
+				$indexerIdentifier = $storage->getIndexerIdentifier();
+
+				if (!isset($indexStorageMap[$indexerIdentifier])) {
+					$indexStorageMap[$indexerIdentifier] = [];
+				}
+				$indexStorageMap[$indexerIdentifier][] = $storage;
+			}
+		} catch(NotFoundException $ex) {
+
+		}
+
+		$indexers = [];
+		foreach($indexStorageMap as $singleIndexer => $storages) {
+			if (!class_exists($singleIndexer)) {
+				continue;
+			}
+
+			try {
+				/** @var IIndexer $instance */
+				$instance = new $singleIndexer();
+				$instance->setStorages($storages);
+				$indexers[] = $instance;
+			} catch(\Exception $ex) {
+				//TODO
+			}
+		}
+
+		// Search Indexers from 0 to $page + $size
+		// Some better approximation of what $page should look like
+		// should be added in a later version
+		$indexerSize = $page + $size;
+
+		$results = [];
+		foreach($indexers as $indexer) {
+			/** @var IIndexer $indexer */
+			$results = array_merge($results, $indexer->search($query, 0, $indexerSize));
+		}
+
+		usort($results, function(ScoredResult $a, ScoredResult $b) {
+			return ($a->score < $b->score) ? -1 : 1;
+		});
+		$results = array_slice($results, $page, $size);
+
+	}
+
+	protected function getQuery($phrase, $path) {
+		$query = new Zend_Search_Lucene_Search_Query_Boolean();
+
+		$this->addPathQuery($query, $path);
+		$this->addPhraseQuery($query, $phrase);
+		$this->addUserQuery($query);
+
+		return $query;
+	}
+
+	/**
+	 * @param Zend_Search_Lucene_Search_Query_Boolean $query
+	 * @param string $path
+	 */
+	protected function addPathQuery($query, $path) {
+		$indexTerm = new Zend_Search_Lucene_Index_Term($path, 'child_of');
+		$queryTerm = new Zend_Search_Lucene_Search_Query_Term($indexTerm);
+		$query->addSubquery($queryTerm, true);
+	}
+
+	/**
+	 * @param Zend_Search_Lucene_Search_Query_Boolean $query
+	 * @param string $phrase
+	 */
+	protected function addPhraseQuery($query, $phrase) {
+		$parts = explode(' ', $phrase);
+
+		$phraseQuery = new Zend_Search_Lucene_Search_Query_Phrase($parts);
+		$query->addSubquery($phraseQuery, true);
+	}
+
+	/**
+	 * @param Zend_Search_Lucene_Search_Query_Boolean $query
+	 */
+	protected function addUserQuery($query) {
+		$user = $this->userSession->getUser();
+		if (!$user) {
+			// TODO - throw some exception
+		}
+
+		$userId = $user->getUID();
+		$indexTerm = new Zend_Search_Lucene_Index_Term($userId, 'userid');
+		$queryTerm = new Zend_Search_Lucene_Search_Query_Term($indexTerm);
+		$query->addSubquery($queryTerm, true);
+	}
+}