Adopt metadata value / enhance object

Now just using JSON.stringify without wrapping the value in quotes

Author: matz3

lib/index.js

@@ -15,6 +15,8 @@ const ImportCollectorPlugin = require("./plugin/import-collector");
 const VariableCollectorPlugin = require("./plugin/variable-collector");
 const UrlCollector = require("./plugin/url-collector");
 
+const LESS_OPENUI5_VERSION = require("../package.json").version;
+
 // Workaround for a performance issue in the "css" parser module when used in combination
 // with the "colors" module that enhances the String prototype.
 // See: https://github.com/reworkcss/css/issues/88
@@ -363,12 +365,31 @@ Builder.prototype.build = function(options) {
 				scopes = [];
 			}
 
-			const metadataJson = JSON.stringify({"Scopes": scopes});
+			const libraryNameSlashed = options.library.name.replace(/\./g, "/");
 			const libraryNameDashed = options.library.name.replace(/\./g, "-");
+
+			// TODO: How to get theme name? .theming "sId"? parse from file path? new parameter?
+			const themeId = "<theme-name>";
+
+			const metadataJson = JSON.stringify({
+				"Path": `UI5.${libraryNameSlashed}.${themeId}.library`,
+				"PathPattern": "/%frameworkId%/%libId%/themes/%themeId%/%fileId%.css",
+				"Extends": ["base"], // TODO: Read from .theming?
+				"Scopes": scopes,
+				"Engine": {
+					"Version": LESS_OPENUI5_VERSION,
+					"Name": "less-openui5"
+				},
+				"Version": {
+					"Build": "<TODO>", // TOOD: add new property options.library.version
+					"Source": "<TODO>" // TOOD: add new property options.library.version
+				}
+			});
+
 			const additionalVariables = `
 :root {
   --sapUiTheme-${libraryNameDashed}: true;
-  --sapThemeMetaData-UI5-${libraryNameDashed}: '${metadataJson}';
+  --sapThemeMetaData-UI5-${libraryNameDashed}: ${metadataJson};
 }
 `;
 			result.css = additionalVariables + result.cssVariables + "\n" + result.css;