Add verbose logging

lib/tasks/buildThemes.js

@@ -2,6 +2,7 @@ const path = require("path");
 const themeBuilder = require("../processors/themeBuilder");
 const ReaderCollectionPrioritized = require("@ui5/fs").ReaderCollectionPrioritized;
 const fsInterface = require("@ui5/fs").fsInterface;
+const log = require("@ui5/logger").getLogger("builder:tasks:buildThemes");
 
 /**
  * Task to build a library theme.
@@ -61,18 +62,11 @@ module.exports = async function({workspace, dependencies, options}) {
 	let allResources = await pAllResources;
 
 	const isAvailable = function(resource) {
-		let themeAvailable = false;
 		let libraryAvailable = false;
-
+		let themeAvailable = false;
 		const resourcePath = resource.getPath();
 		const themeName = path.basename(path.dirname(resourcePath));
 
-		if (!availableThemes || availableThemes.length === 0) {
-			themeAvailable = true; // If no themes are found, build all themes
-		} else {
-			themeAvailable = availableThemes.includes(themeName);
-		}
-
 		if (!availableLibraries || availableLibraries.length === 0) {
 			libraryAvailable = true; // If no libraries are found, build themes for all libraries
 		} else {
@@ -83,11 +77,35 @@ module.exports = async function({workspace, dependencies, options}) {
 			}
 		}
 
-		// Only build if theme and library are available
-		return themeAvailable && libraryAvailable;
+		if (!availableThemes || availableThemes.length === 0) {
+			themeAvailable = true; // If no themes are found, build all themes
+		} else {
+			themeAvailable = availableThemes.includes(themeName);
+		}
+
+		if (log.isLevelEnabled("verbose")) {
+			if (!libraryAvailable) {
+				log.verbose(`Skipping ${resourcePath}: Library is not available`);
+			}
+			if (!themeAvailable) {
+				log.verbose(`Skipping ${resourcePath}: sap.ui.core theme '${themeName}' is not available`);
+			}
+		}
+
+		// Only build if library and theme are available
+		return libraryAvailable && themeAvailable;
 	};
 
 	if (availableLibraries || availableThemes) {
+		if (log.isLevelEnabled("verbose")) {
+			log.verbose("Filtering themes to be built:");
+			if (availableLibraries) {
+				log.verbose(`Available libraries: ${availableLibraries.join(", ")}`);
+			}
+			if (availableThemes) {
+				log.verbose(`Available sap.ui.core themes: ${availableThemes.join(", ")}`);
+			}
+		}
 		allResources = allResources.filter(isAvailable);
 	}