Added cache override to ensure an always up-to-date accessibility css

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

3 files changed, 24 insertions, 7 deletions

diff --git a/apps/accessibility/lib/AppInfo/Application.php b/apps/accessibility/lib/AppInfo/Application.php
index 068fcc27b7a..203c0d088bc 100644
--- a/apps/accessibility/lib/AppInfo/Application.php
+++ b/apps/accessibility/lib/AppInfo/Application.php
@@ -54,8 +54,10 @@ class Application extends App {
 		$loggedUser = $this->userSession->getUser();
 		if (!is_null($loggedUser)) {
 			$userValues = $this->config->getUserKeys($loggedUser->getUID(), $this->appName);
+			// we want to check if any theme or font is enabled.
 			if (count($userValues) > 0) {
-				$linkToCSS = $this->urlGenerator->linkToRoute($this->appName . '.accessibility.getCss', ['md5' => md5(implode('-', $userValues))]);
+				$hash = $this->config->getUserValue($loggedUser->getUID(), $this->appName, 'icons-css', md5(implode('-', $userValues)));
+				$linkToCSS = $this->urlGenerator->linkToRoute($this->appName . '.accessibility.getCss', ['md5' => $hash]);
 				\OCP\Util::addHeader('link', ['rel' => 'stylesheet', 'href' => $linkToCSS]);
 			}
 		}
diff --git a/apps/accessibility/lib/Controller/AccessibilityController.php b/apps/accessibility/lib/Controller/AccessibilityController.php
index 8f1ffa452af..4d88db1435d 100644
--- a/apps/accessibility/lib/Controller/AccessibilityController.php
+++ b/apps/accessibility/lib/Controller/AccessibilityController.php
@@ -181,6 +181,9 @@ class AccessibilityController extends Controller {
 		$response->addHeader('Expires', $expires->format(\DateTime::RFC1123));
 		$response->addHeader('Pragma', 'cache');
 
+		// store current cache hash
+		$this->config->setUserValue($this->userSession->getUser()->getUID(), $this->appName, 'icons-css', md5($css));
+
 		return $response;
 	}
 
diff --git a/apps/accessibility/lib/Controller/ConfigController.php b/apps/accessibility/lib/Controller/ConfigController.php
index ba11faafa20..1fe2c4fbc13 100644
--- a/apps/accessibility/lib/Controller/ConfigController.php
+++ b/apps/accessibility/lib/Controller/ConfigController.php
@@ -37,6 +37,9 @@ class ConfigController extends OCSController {
 	protected $appName;
 
 	/** @var string */
+	protected $userId;
+
+	/** @var string */
 	protected $serverRoot;
 
 	/** @var IConfig */
@@ -67,6 +70,7 @@ class ConfigController extends OCSController {
 		$this->config                = $config;
 		$this->userSession           = $userSession;
 		$this->accessibilityProvider = $accessibilityProvider;
+		$this->userId				 = $userSession->getUser()->getUID();
 	}
 
 	/**
@@ -79,8 +83,8 @@ class ConfigController extends OCSController {
 	 */
 	public function getConfig(): DataResponse {
 		return new DataResponse([
-			'theme' => $this->config->getUserValue($this->userSession->getUser()->getUID(), $this->appName, 'theme', false),
-			'font' => $this->config->getUserValue($this->userSession->getUser()->getUID(), $this->appName, 'font', false)
+			'theme' => $this->config->getUserValue($this->userId, $this->appName, 'theme', false),
+			'font' => $this->config->getUserValue($this->userId, $this->appName, 'font', false)
 		]);
 	}
 
@@ -95,20 +99,28 @@ class ConfigController extends OCSController {
 	 */
 	public function setConfig(string $key, $value): DataResponse {
 		if ($key === 'theme' || $key === 'font') {
-			$themes = $this->accessibilityProvider->getThemes();
-			$fonts  = $this->accessibilityProvider->getFonts();
 
 			if ($value === false) {
-				$this->config->deleteUserValue($this->userSession->getUser()->getUID(), $this->appName, $key);
+				$this->config->deleteUserValue($this->userId, $this->appName, $key);
+				$userValues = $this->config->getUserKeys($this->userId, $this->appName);
+
+				// remove hash if no settings selected
+				if (count($userValues) === 1 && $userValues[0] === 'icons-css') {
+					$this->config->deleteUserValue($this->userId, $this->appName, 'icons-css');
+				}
+
 				return new DataResponse();
 			}
 
+			$themes = $this->accessibilityProvider->getThemes();
+			$fonts  = $this->accessibilityProvider->getFonts();
+
 			$availableOptions = array_map(function($option) {
 				return $option['id'];
 			}, array_merge($themes, $fonts));
 
 			if (in_array($value, $availableOptions)) {
-				$this->config->setUserValue($this->userSession->getUser()->getUID(), $this->appName, $key, $value);
+				$this->config->setUserValue($this->userId, $this->appName, $key, $value);
 				return new DataResponse();
 			}