fix: suppport loading of application wizard/generators when using a virtual fs

packages/backend/package.json

@@ -198,7 +198,8 @@
     "strip-ansi": "6.0.0",
     "sudo-prompt": "9.2.1",
     "titleize": "2.1.0",
-    "yeoman-environment": "3.19.3"
+    "yeoman-environment": "3.19.3",
+    "vscode-uri": "3.1.0"
   },
   "devDependencies": {
     "@types/cheerio": "^0.22.31",

packages/backend/src/panels/YeomanUIPanel.ts

@@ -16,6 +16,7 @@ import { NpmCommand } from "../utils/npm";
 import { Constants } from "../utils/constants";
 import { notifyGeneratorsInstallationProgress } from "../utils/generators-installation-progress";
 import messages from "../messages";
+import { getFileSchemeWorkspaceFolders } from "../utils/workspaceFolders";
 
 export class YeomanUIPanel extends AbstractWebviewPanel {
   public static YEOMAN_UI = "Application Wizard";
@@ -142,7 +143,8 @@ export class YeomanUIPanel extends AbstractWebviewPanel {
       }
       uri = vscode.Uri.file(currentPath);
     } catch (e) {
-      uri = get(vscode, "workspace.workspaceFolders[0].uri");
+      const fileSchemeWorkspaces = getFileSchemeWorkspaceFolders();
+      uri = fileSchemeWorkspaces.length > 0 ? fileSchemeWorkspaces[0].uri : undefined;
       if (isNil(uri)) {
         uri = vscode.Uri.file(join(homedir()));
       }

packages/backend/src/utils/vscodeProxy.ts

@@ -1,5 +1,6 @@
 import { set } from "lodash";
 import { join } from "path";
+import { URI } from "vscode-uri";
 
 export const getVscode = () => {
   try {
@@ -33,10 +34,10 @@ const context = { globalState: globalStateObj, extensionPath: "" };
 
 const Uri = {
   file: (path?: string) => {
-    return { fsPath: path };
+    return URI.file(path || "");
   },
   parse: (path?: string) => {
-    return { fsPath: path };
+    return URI.parse(path || "");
   },
 };
 

packages/backend/src/utils/workspaceFolders.ts

@@ -0,0 +1,32 @@
+import { workspace, WorkspaceFolder } from "vscode";
+
+/**
+ * Returns an array of WorkspaceFolder objects with 'file' URI scheme.
+ * Useful when you need the full WorkspaceFolder metadata (name, uri, etc.).
+ * @returns Array of WorkspaceFolder objects with file scheme, or empty array
+ */
+export function getFileSchemeWorkspaceFolders(): WorkspaceFolder[] {
+  return workspace.workspaceFolders
+    ? workspace.workspaceFolders.filter((folder) => folder?.uri?.scheme === "file")
+    : [];
+}
+
+/**
+ * Returns an array of file system paths for workspace folders with 'file' URI scheme.
+ * Filters out virtual workspaces (remote, SSH, WSL, etc.) that don't have valid fsPath.
+ * @returns Array of file system paths, or empty array if no file-scheme workspaces exist
+ */
+export function getWorkspaceFolders(): string[] {
+  return getFileSchemeWorkspaceFolders().map((ws) => ws.uri.fsPath);
+}
+
+/**
+ * Returns the first file-scheme workspace path, or fallback if none exist.
+ * Convenience method for cases where you need a single path with a default.
+ * @param fallback The fallback path to use if no file-scheme workspaces exist
+ * @returns The first file-scheme workspace path or the fallback value
+ */
+export function getFirstWorkspacePath(fallback: string): string {
+  const paths = getWorkspaceFolders();
+  return paths.length > 0 ? paths[0] : fallback;
+}

packages/backend/src/vscode-youi-events.ts

@@ -1,5 +1,5 @@
 import * as vscode from "vscode";
-import { isEmpty, size, isNil, set } from "lodash";
+import { isEmpty, isNil, set } from "lodash";
 import { YouiEvents } from "./youi-events";
 import { IRpc } from "@sap-devx/webview-rpc/out.ext/rpc-common";
 import { GeneratorOutput } from "./vscode-output";
@@ -9,6 +9,7 @@ import { getImage } from "./images/messageImages";
 import { AppWizard, MessageType, Severity, IBannerProps } from "@sap-devx/yeoman-ui-types";
 import { FolderUriConfig, getFolderUri, getValidFolderUri, WorkspaceFile, WsFoldersToAdd } from "./utils/workspaceFile";
 import { Constants } from "./utils/constants";
+import { getFileSchemeWorkspaceFolders } from "./utils/workspaceFolders";
 
 class YoUiAppWizard extends AppWizard {
   constructor(private readonly events: VSCodeYouiEvents) {
@@ -240,7 +241,7 @@ export class VSCodeYouiEvents implements YouiEvents {
   }
 
   private getUniqueProjectName(baseName: string): string {
-    const existingNames = vscode.workspace.workspaceFolders?.map((folder) => folder.name) || [];
+    const existingNames = getFileSchemeWorkspaceFolders().map((folder) => folder.name);
     if (!existingNames.includes(baseName)) {
       return baseName;
     }
@@ -257,8 +258,9 @@ export class VSCodeYouiEvents implements YouiEvents {
   }
 
   private addOrCreateProjectWorkspace(wsFoldersToAdd: WsFoldersToAdd) {
-    const wsFoldersQuantity = size(vscode.workspace.workspaceFolders);
-    vscode.workspace.updateWorkspaceFolders(wsFoldersQuantity, null, wsFoldersToAdd);
+    const fileSchemeWorkspaces = getFileSchemeWorkspaceFolders();
+    const insertPosition = fileSchemeWorkspaces.length;
+    vscode.workspace.updateWorkspaceFolders(insertPosition, null, wsFoldersToAdd);
   }
 
   private getSuccessInfoMessage(selectedWorkspace: string, type: string): string {

packages/backend/src/yeomanui.ts

@@ -24,6 +24,7 @@ import { Questions } from "yeoman-environment/lib/adapter";
 import { State } from "./utils/promise";
 import { Constants } from "./utils/constants";
 import { isUriFlow } from "./utils/workspaceFile";
+import { getFirstWorkspacePath } from "./utils/workspaceFolders";
 
 export interface IQuestionsPrompt extends IPrompt {
   questions: any[];
@@ -363,9 +364,7 @@ export class YeomanUI {
       return targetFolderConfig;
     }
 
-    return Constants.IS_IN_BAS
-      ? Constants.HOMEDIR_PROJECTS
-      : _.get(vscode, "workspace.workspaceFolders[0].uri.fsPath", Constants.HOMEDIR_PROJECTS);
+    return Constants.IS_IN_BAS ? Constants.HOMEDIR_PROJECTS : getFirstWorkspacePath(Constants.HOMEDIR_PROJECTS);
   }
 
   public async showPrompt(questions: Questions<any>): Promise<inquirer.Answers> {

packages/backend/test/panels/YeomanUIPanel.spec.ts

@@ -231,7 +231,7 @@ describe("YeomanUIPanel unit test", () => {
 
     it("showOpenDialog - empty path provided, ws folder exists", async () => {
       const canSelectFiles = true;
-      const objWs = [{ uri: { fsPath: "rootFolderPath" } }];
+      const objWs = [{ uri: { fsPath: "rootFolderPath", scheme: "file" } }];
       sandbox.stub(vscode.workspace, "workspaceFolders").value(objWs);
       windowMock
         .expects("showOpenDialog")