Add themed manifest.json to theming app

Signed-off-by: Julius Haertl <jus@bitgrid.net>

apps/theming/appinfo/routes.php

@@ -60,6 +60,12 @@ return ['routes' => [
 		'url' => '/js/theming',
 		'verb' => 'GET',
 	],
+	[
+		'name' => 'Theming#getManifest',
+		'url' => '/manifest/{app}',
+		'verb' => 'GET',
+		'defaults' => array('app' => 'core')
+	],
 	[
 		'name'	=> 'Icon#getFavicon',
 		'url' => '/favicon/{app}',

apps/theming/lib/Controller/ThemingController.php

@@ -423,4 +423,39 @@ class ThemingController extends Controller {
 		$response->cacheFor(3600);
 		return $response;
 	}
+
+	/**
+	 * @NoCSRFRequired
+	 * @PublicPage
+	 *
+	 * @return Http\JSONResponse
+	 */
+	public function getManifest($app) {
+		$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
+		$responseJS = [
+			'name' => $this->themingDefaults->getName(),
+			'start_url' => $this->urlGenerator->getBaseUrl(),
+			'icons' =>
+				[
+					[
+						'src' => $this->urlGenerator->linkToRoute('theming.Icon.getTouchIcon',
+								['app' => $app]) . '?v=' . $cacheBusterValue,
+						'type'=> 'image/png',
+						'sizes'=> '128x128'
+					],
+					[
+						'src' => $this->urlGenerator->linkToRoute('theming.Icon.getFavicon',
+								['app' => $app]) . '?v=' . $cacheBusterValue,
+						'type' => 'image/svg+xml',
+						'sizes' => '16x16'
+					]
+				],
+			'display' => 'standalone'
+		];
+		$response = new Http\JSONResponse($responseJS);
+		$response->addHeader('Expires', date(\DateTime::RFC2822, $this->timeFactory->getTime()));
+		$response->addHeader('Pragma', 'cache');
+		$response->cacheFor(3600);
+		return $response;
+	}
 }

apps/theming/tests/Controller/ThemingControllerTest.php

@@ -729,4 +729,53 @@ class ThemingControllerTest extends TestCase {
 		$expected->cacheFor(3600);
 		@$this->assertEquals($expected, $this->themingController->getJavascript());
 	}
+
+	public function testGetManifest() {
+		$this->config
+			->expects($this->once())
+			->method('getAppValue')
+			->with('theming', 'cachebuster', '0')
+			->willReturn('0');
+		$this->themingDefaults
+			->expects($this->any())
+			->method('getName')
+			->willReturn('Nextcloud');
+		$this->urlGenerator
+			->expects($this->at(0))
+			->method('getBaseUrl')
+			->willReturn('localhost');
+		$this->urlGenerator
+			->expects($this->at(1))
+			->method('linkToRoute')
+			->with('theming.Icon.getTouchIcon', ['app' => 'core'])
+			->willReturn('touchicon');
+		$this->urlGenerator
+			->expects($this->at(2))
+			->method('linkToRoute')
+			->with('theming.Icon.getFavicon', ['app' => 'core'])
+			->willReturn('favicon');
+		$response = new Http\JSONResponse([
+			'name' => 'Nextcloud',
+			'start_url' => 'localhost',
+			'icons' =>
+				[
+					[
+						'src' => 'touchicon?v=0',
+						'type'=> 'image/png',
+						'sizes'=> '128x128'
+					],
+					[
+						'src' => 'favicon?v=0',
+						'type' => 'image/svg+xml',
+						'sizes' => '16x16'
+					]
+				],
+			'display' => 'standalone'
+		]);
+		$response->addHeader('Expires', date(\DateTime::RFC2822, $this->timeFactory->getTime()));
+		$response->addHeader('Pragma', 'cache');
+		$response->cacheFor(3600);
+		$this->assertEquals($response, $this->themingController->getManifest('core'));
+	}
+
 }