This pull request improves the robustness and reliability of Google Drive integration in the GoogleDriveStore class. The main changes focus on enhanced token validation, better error handling during file operations, and improved API request configuration to ensure smoother uploads and downloads.

Authentication and Token Validation:

• Added a check to ensure access_token exists before verifying, and implemented a call to Google's tokeninfo endpoint to validate the token, with proper error handling and user notification if invalid. [1] [2]

Error Handling and Event Reporting:

• Improved error handling in file download by validating XML content and reporting failures via rudderStackSendUploadStrategyFailedEvent, including specific error messages and codes.
• Updated event reporting for upload failures to use a more type-safe approach for the upload_provider field. [1] [2]

API Request Improvements:

• Enhanced upload requests by adding Accept: application/json and X-Goog-Upload-Protocol: multipart headers for better compatibility with Google Drive API.

File Content Validation:

• Added basic XML validation for downloaded files to ensure only valid XML content is processed, with error handling for invalid content.