fix(amazon-q): transform fails if whitespace in user-provided JAVA_HOME #4633

Problem:
When customers provide a path to JDK installation that contains whitespace we
fail to use it when executing Maven to build the customers project. E.g. passing:

    /Library/Java/JavaVirtualMachines/jdk 8 with spaces/amazon-corretto-8.jdk/Contents/Home

fails with:

    I'm sorry, I could not locate your Java installation. To troubleshoot, see the [Amazon Q documentation.](https://docs.aws.amazon.com/amazonq/latest/aws-builder-use-ug/troubleshooting-code-transformation.html#maven-commands-failing)

Solution:
1. Use `path` to parse input instead of string manipulation (previously split on whitespace)
3. Update messaging on windows of how to check for Java installation.


Testing:
1. Ran it on mac using `/Library/Java/JavaVirtualMachines/jdk 8 with spaces/amazon-corretto-8.jdk/Contents/Home`
2. Ran it on Windows

Author: arangatang

.changes/next-release/Bug Fix-a1567f38-b9c9-460b-94ea-66ff50ea9f73.json

@@ -0,0 +1,4 @@
+{
+	"type": "Bug Fix",
+	"description": "Amazon Q Code Transform: Handle whitespaces in manually entered JAVA_HOME"
+}

packages/core/src/amazonqGumby/chat/controller/controller.ts

@@ -342,11 +342,18 @@ export class GumbyController {
     }
 }
 
+/**
+ * Examples:
+ * ```
+ * extractPath("./some/path/here") => "C:/some/root/some/path/here"
+ * extractPath("C:/some/nonexistent/path/here") => undefined
+ * extractPath("C:/some/filepath/.txt") => undefined
+ * ```
+ *
+ * @param text
+ * @returns the absolute path if path points to existing folder, otherwise undefined
+ */
 function extractPath(text: string): string | undefined {
-    const words = text.split(/\s+/) // Split text into words by whitespace
-
-    // Filter words that are formatted like paths and do exist as local directories
-    const paths = words.find(word => fs.existsSync(word) && fs.lstatSync(word).isDirectory())
-
-    return paths
+    const resolvedPath = path.resolve(text)
+    return fs.existsSync(resolvedPath) && fs.lstatSync(resolvedPath).isDirectory() ? resolvedPath : undefined
 }

packages/core/src/amazonqGumby/chat/controller/messenger/stringConstants.ts

@@ -7,7 +7,7 @@
 export const enterJavaHomeMessage = 'Enter the path to JDK '
 
 export const windowsJavaHomeHelpMessage =
-    'To find the JAVA_HOME path, run the following command in a new IDE terminal: `cd C:ProgramFilesJava` and then `dir`. If you see your JDK version, run `cd JDK<version>` and then `cd` to show the path.'
+    'To find the JAVA_HOME path, run the following command in a new IDE terminal: `cd "C:\\Program Files\\Java" && dir`. If you see your JDK version, run `cd <version>` and then `cd` to show the path.'
 
 export const nonWindowsJava8HomeHelpMessage =
     'To find the JAVA_HOME path, run the following command in a new IDE terminal:  `/usr/libexec/java_home -v 1.8`'