Technical Architecture:

1. Capture: A webhook listens for incoming LINE message events containing files
2. Configure: Settings are pulled from Google Sheets (allowed file types, organization preferences)
3. Process: File content is retrieved and validated against allowed formats
4. Organize: Dynamic folder structure is created/located in Google Drive
5. Store: Files are uploaded to appropriate folders with original metadata preserved
6. Log: Transaction details are recorded in Google Sheets with timestamps and links
7. Respond: Automatic reply messages are sent to LINE users with file access information

The workflow adapts to your preferences, supporting organization by date, file type, or both, with all settings manageable through a simple configuration spreadsheet.