Feature #656: Add Open Data UI to Cloud Computing tab

[ArsalanAnwer0]

Issue

Closes #656

Summary

This PR implements the UI/UX interface for the Open Data publishing procedure, integrated into the Cloud Computing tab. Users can now augment their BCI datasets by 60% through a user friendly interface that validates directory structure, shows real time progress, and provides clear success/error feedback.

Changes

Backend (opendata_api.py)

• Created OpenDataAPI class following shuffler_api.py pattern
• Implemented directory validation with structure checking
• Implemented augmentation execution with output capture
• Comprehensive error handling for common failure modes

Integration (GUI5.py)

• Imported and initialized OpenDataAPI
• Registered API with QML context

UI (CloudComputing.qml)

• Added "Open Data Publishing" section below existing Upload functionality
• Directory selection with Browse button and FolderDialog
• Validation feedback (green checkmark or red error message)
• Open Data button with state management:
  • Normal: Gray
  • Running: Yellow (during processing)
  • Success: Green (completed successfully)
  • Error: Red (failed)
• Console log display (250px height, scrollable, monospace font)
• Status text for completion feedback
• Confirmation dialog showing:
  • Current file count
  • Estimated new files (60% increase)
  • Total after augmentation
  • Warning about in place modification
  • Operation steps

Technical Implementation

Directory Structure Expected:

parent_directory/
└── brainwaves/
    └── brainwave_rawdata_YEAR/
        ├── forward/
        ├── backward/
        ├── land/
        ├── takeoff/
        ├── right/
        └── left/

Execution Flow:

1. User selects parent directory (contains brainwaves/)
2. Validation checks for proper structure
3. Confirmation dialog shows file counts
4. User confirms operation
5. Button turns yellow, console shows progress
6. opendata.py executes (rename → replicate 60% → shuffle)
7. Button turns green, status shows success

Error Handling:

• Invalid directory structure: Red validation message
• Missing files/permissions: Error displayed in console
• User cancellation: No changes made
• Script crashes: Full error shown with troubleshooting tips

Testing

• Tested with mock directory structure (12 files)
• Validated error handling for missing directories
• Verified button state transitions
• Confirmed console output display
• Tested user cancellation flow
• Verified integration with existing Cloud Computing UI

Files Modified

• opendata_api.py
• GUI5.py (4 lines added)
• CloudComputing.qml (332 lines added)

Acceptance Criteria Met

• New section added to Cloud Computing tab
• Interface matches design requirements
• Button changes to yellow during processing, green on success
• Folder selection opens file management window
• Console log displays opendata.py output
• UI elements linked to backend (file-opendata)
• Users can initiate brainwave data publishing procedure
• Appropriate feedback during/after publishing (success/error messages)

Additional Context

This follows established patterns from FileShuffler.qml and shuffler_api.py for consistency with the existing codebase. The UI matches the Cloud Computing tab's styling and integrates seamlessly with existing functionality.