configurable amount of autocomplete results in comments

Signed-off-by: Arthur Schiwon <blizzz@arthur-schiwon.de>

apps/comments/js/commentstabview.js

@@ -179,6 +179,7 @@
 			var s = this;
 			$target.atwho({
 				at: '@',
+				limit: OC.appConfig.comments.maxAutoCompleteResults,
 				callbacks: {
 					remoteFilter: s._onAutoComplete,
 					highlighter: function (li) {
@@ -237,7 +238,8 @@
 						search: query,
 						itemType: 'files',
 						itemId: s.model.get('id'),
-						sorter: 'comments|share-recipients'
+						sorter: 'comments|share-recipients',
+						limit: OC.appConfig.comments.maxAutoCompleteResults
 					},
 					function (data) {
 						callback(data);

apps/comments/lib/AppInfo/Application.php

@@ -22,7 +22,9 @@
 namespace OCA\Comments\AppInfo;
 
 use OCA\Comments\Controller\Notifications;
+use OCA\Comments\JSSettingsHelper;
 use OCP\AppFramework\App;
+use OCP\Util;
 
 class Application extends App {
 
@@ -31,5 +33,8 @@ class Application extends App {
 		$container = $this->getContainer();
 
 		$container->registerAlias('NotificationsController', Notifications::class);
+
+		$jsSettingsHelper = new JSSettingsHelper($container->getServer());
+		Util::connectHook('\OCP\Config', 'js', $jsSettingsHelper, 'extend');
 	}
 }

apps/comments/lib/JSSettingsHelper.php

@@ -0,0 +1,45 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @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\Comments;
+
+
+use OCP\IServerContainer;
+
+class JSSettingsHelper {
+	/** @var IServerContainer */
+	private $c;
+
+	public function __construct(IServerContainer $c) {
+		$this->c = $c;
+	}
+
+	public function extend(array $settings) {
+		$appConfig = json_decode($settings['array']['oc_appconfig'], true);
+
+		$value = (int)$this->c->getConfig()->getAppValue('comments', 'maxAutoCompleteResults', 10);
+		$appConfig['comments']['maxAutoCompleteResults'] = $value;
+
+		$settings['array']['oc_appconfig'] = json_encode($appConfig);
+	}
+}

apps/comments/tests/Unit/JSSettingsHelperTest.php

@@ -0,0 +1,73 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
+ *
+ * @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\Comments\Tests\Unit;
+
+use OCA\Comments\JSSettingsHelper;
+use OCP\IConfig;
+use OCP\IServerContainer;
+use Test\TestCase;
+
+class JSSettingsHelperTest extends TestCase {
+	/** @var  IServerContainer|\PHPUnit_Framework_MockObject_MockObject */
+	protected $c;
+	/** @var  JSSettingsHelper */
+	protected $helper;
+
+	public function setUp() {
+		parent::setUp();
+
+		$this->c = $this->createMock(IServerContainer::class);
+
+		$this->helper = new JSSettingsHelper($this->c);
+	}
+
+	public function testExtend() {
+		$config = $this->createMock(IConfig::class);
+		$config->expects($this->once())
+			->method('getAppValue')
+			->with('comments', 'maxAutoCompleteResults')
+			->willReturn(13);
+
+		$this->c->expects($this->once())
+			->method('getConfig')
+			->willReturn($config);
+
+		$config = [
+			'oc_appconfig' => json_encode([
+				'anotherapp' => [
+					'foo' => 'bar',
+					'foobar' => true
+				]
+			])
+		];
+
+		$this->helper->extend(['array' => &$config]);
+
+		$appConfig = json_decode($config['oc_appconfig'], true);
+		$this->assertTrue(isset($appConfig['comments']));
+		$this->assertTrue(isset($appConfig['anotherapp']));
+		$this->assertSame(2, count($appConfig['anotherapp']));
+		$this->assertSame(13, $appConfig['comments']['maxAutoCompleteResults']);
+	}
+}

config/config.sample.php

@@ -1232,25 +1232,6 @@ $CONFIG = array(
  */
 'sharing.minSearchStringLength' => 0,
 
-/**
- * Collaboration
- *
- * Global settings for collaboration
- */
-
-/**
- * Defines the maximum number of auto complete results. The default is 50. This
- * is used by the auto complete backend, which for example is consumed by
- * auto completion feature in comments.
- *
- * It may look similar to sharing.maxAutocompleteResults, but there are some key
- * differences in utilization. Thus, an unlimited default is very bad. Also,
- * does not control the number of displayed results, but results fetched from
- * each user backend. A small number is crucial for performance and a positive
- * user experience.
- */
-'collaboration.maxAutocompleteResults' => 50,
-
 /**
  * All other configuration options
  */

core/Controller/AutoCompleteController.php

@@ -61,12 +61,12 @@ class AutoCompleteController extends Controller {
 	 * @param string $itemId
 	 * @param string|null $sorter can be piped, top prio first, e.g.: "commenters|share-recipients"
 	 * @param array $shareTypes
+	 * @param int $limit
 	 * @return DataResponse
 	 */
-	public function get($search, $itemType, $itemId, $sorter = null, $shareTypes = [Share::SHARE_TYPE_USER]) {
+	public function get($search, $itemType, $itemId, $sorter = null, $shareTypes = [Share::SHARE_TYPE_USER], $limit = 10) {
 		// if enumeration/user listings are disabled, we'll receive an empty
 		// result from search() – thus nothing else to do here.
-		$limit = $this->config->getSystemValue('collaboration.maxAutocompleteResults', 50);
 		list($results,) = $this->collaboratorSearch->search($search, $shareTypes, false, $limit, 0);
 
 		// there won't be exact matches without a search string