Added touch icon route (#370)

* Added touch icon route

* fixed php style

appinfo/routes.php

@@ -23,5 +23,11 @@
 			'url' => '/mime/img/{iconname}.svg',
 			'verb' => 'GET',
 		],
+		[
+			'name' => 'TouchIcon#getTouchIcon',
+			'url' => '/touchicon/{app}',
+			'verb' => 'GET',
+			'defaults' => ['app' => 'nmctheme'],
+		],
 	]
 ];

lib/Controller/TouchIconController.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace OCA\NMCTheme\Controller;
+
+use OC\IntegrityCheck\Helpers\FileAccessHelper;
+use OCA\NMCTheme\AppInfo\Application;
+use OCP\App\IAppManager;
+use OCP\AppFramework\Controller;
+use OCP\AppFramework\Http;
+use OCP\AppFramework\Http\DataDisplayResponse;
+use OCP\AppFramework\Http\Response;
+use OCP\IRequest;
+
+class TouchIconController extends Controller {
+	/** @var FileAccessHelper */
+	private $fileAccessHelper;
+
+	/** @var IAppManager */
+	private $appManager;
+
+	public function __construct(
+		IRequest $request,
+		FileAccessHelper $fileAccessHelper,
+		IAppManager $appManager,
+	) {
+		parent::__construct(Application::APP_ID, $request);
+		$this->fileAccessHelper = $fileAccessHelper;
+		$this->appManager = $appManager;
+	}
+
+	/**
+	 * Return a 512x512 icon for touch devices
+	 *
+	 * @PublicPage
+	 * @NoCSRFRequired
+	 *
+	 * @param string $app ID of the app
+	 * @return DataDisplayResponse<Http::STATUS_OK, array{Content-Type: 'image/png'}>|FileDisplayResponse<Http::STATUS_OK, array{Content-Type: 'image/x-icon'|'image/png'}>|NotFoundResponse<Http::STATUS_NOT_FOUND, array{}>
+	 *
+	 * 200: Touch icon returned
+	 * 404: Touch icon not found
+	 */
+	public function getTouchIcon(string $app = 'core'): Response {
+
+		$touchIconPath = $this->appManager->getAppPath(Application::APP_ID) . "/img/";
+		$iconFile = $this->fileAccessHelper->file_get_contents($touchIconPath . 'favicon-touch.png');
+		$response = new DataDisplayResponse($iconFile, Http::STATUS_OK, ['Content-Type' => 'image/png']);
+		$response->cacheFor(86400);
+
+		return $response;
+	}
+}

lib/URLGeneratorDecorator.php

@@ -37,6 +37,10 @@ public function __construct(IURLGenerator $decorated) {
 	 * No decoration, only delegate.
 	 */
 	public function linkToRoute(string $routeName, array $arguments = []): string {
+		if ($routeName === 'theming.Icon.getTouchIcon') {
+			return $this->decorated->linkToRoute('nmctheme.TouchIcon.getTouchIcon', $arguments);
+		}
+
 		return $this->decorated->linkToRoute($routeName, $arguments);
 	}