Add theming information to capabilities for the client

apps/theming/appinfo/app.php

@@ -49,3 +49,6 @@ $linkToJs = \OC::$server->getURLGenerator()->linkToRoute(
 		'src' => $linkToJs,
 	], ''
 );
+
+$app = new \OCP\AppFramework\App('theming');
+$app->getContainer()->registerCapability(\OCA\Theming\Capabilities::class);

apps/theming/lib/Capabilities.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * @copyright Copyright (c) 2016, Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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\Theming;
+
+use OCP\Capabilities\ICapability;
+
+/**
+ * Class Capabilities
+ *
+ * @package OCA\Theming
+ */
+class Capabilities implements ICapability {
+
+	/** @var ThemingDefaults */
+	protected $theming;
+
+	/**
+	 * @param ThemingDefaults $theming
+	 */
+	public function __construct(ThemingDefaults $theming) {
+		$this->theming = $theming;
+	}
+
+	/**
+	 * Return this classes capabilities
+	 *
+	 * @return array
+	 */
+	public function getCapabilities() {
+		return [
+			'theming' => [
+				'name' => $this->theming->getName(),
+				'url' => $this->theming->getBaseUrl(),
+				'slogan' => $this->theming->getSlogan(),
+				'color' => $this->theming->getMailHeaderColor(),
+			],
+		];
+	}
+}