Merge pull request #8611 from nextcloud/css-file-suffix-with-apps-versions-backport

[stable12] Use apps versions to generate suffix when possible

Author: MorrisJobke

lib/private/TemplateLayout.php

@@ -131,7 +131,7 @@ public function __construct( $renderAs, $appId = '' ) {
 			if (empty(self::$versionHash)) {
 				$v = \OC_App::getAppVersions();
 				$v['core'] = implode('.', \OCP\Util::getVersion());
-				self::$versionHash = md5(implode(',', $v));
+				self::$versionHash = substr(md5(implode(',', $v)), 0, 8);
 			}
 		} else {
 			self::$versionHash = md5('not installed');
@@ -194,16 +194,40 @@ public function __construct( $renderAs, $appId = '' ) {
 			if (substr($file, -strlen('print.css')) === 'print.css') {
 				$this->append( 'printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix() );
 			} else {
-				$this->append( 'cssfiles', $web.'/'.$file . $this->getVersionHashSuffix()  );
+				$this->append( 'cssfiles', $web.'/'.$file . $this->getVersionHashSuffix($web, $file)  );
 			}
 		}
 	}
 
-	protected function getVersionHashSuffix() {
-		if(\OC::$server->getConfig()->getSystemValue('debug', false)) {
+	/**
+	 * @param string $path
+ 	 * @param string $file
+	 * @return string
+	 */
+	protected function getVersionHashSuffix($path = false, $file = false) {
+		if (\OC::$server->getConfig()->getSystemValue('debug', false)) {
 			// allows chrome workspace mapping in debug mode
 			return "";
 		}
+		$v = \OC_App::getAppVersions();
+
+		// Try the webroot path for a match
+		if ($path !== false && $path !== '') {
+			$appName = $this->getAppNamefromPath($path);
+			if(array_key_exists($appName, $v)) {
+				$appVersion = $v[$appName];
+				return '?v=' . substr(md5($appVersion), 0, 8) . '-' . $this->config->getAppValue('theming', 'cachebuster', '0');
+			}
+		}
+		// fallback to the file path instead
+		if ($file !== false && $file !== '') {
+			$appName = $this->getAppNamefromPath($file);
+			if(array_key_exists($appName, $v)) {
+				$appVersion = $v[$appName];
+				return '?v=' . substr(md5($appVersion), 0, 8) . '-' . $this->config->getAppValue('theming', 'cachebuster', '0');
+			}
+		}
+
 		if ($this->config->getSystemValue('installed', false) && \OC::$server->getAppManager()->isInstalled('theming')) {
 			return '?v=' . self::$versionHash . '-' . $this->config->getAppValue('theming', 'cachebuster', '0');
 		}
@@ -235,6 +259,23 @@ static public function findStylesheetFiles($styles, $compileScss = true) {
 		return $locator->getResources();
 	}
 
+	/**
+	 * @param string $path
+	 * @return string|boolean
+	 */
+	public function getAppNamefromPath($path) {
+		if ($path !== '' && is_string($path)) {
+			$pathParts = explode('/', $path);
+			if ($pathParts[0] === 'css') {
+				// This is a scss request
+				return $pathParts[1];
+			}
+			return end($pathParts);
+		}
+		return false;
+
+	}
+
 	/**
 	 * @param array $scripts
 	 * @return array