task_outline.md

Export to CSV Feature Implementation

1. Update Data Model and ViewModel

• Create an enum for selection modes (e.g., NONE, DELETE, EXPORT_CSV)
• Update MainViewModel to handle the new selection mode
• Add a method to get selected transactions for CSV export

2. UI Updates

• Modify MainScreen to handle the new selection mode
• Implement a FloatingActionButton for CSV export when transactions are selected
• Add UI elements for selecting all transactions in a given month or day

3. CSV Export Functionality

• Create a CsvExporter utility class
• Implement CSV generation logic
• Add functionality to save the CSV file to device storage

4. User Interaction

• Implement long-press gesture to enter selection mode
• Add checkbox UI to TransactionItem for selection
• Create a dialog or bottom sheet for export options and confirmation

5. Navigation and Screen Management

• Decide on navigation approach (separate screen vs. in-place UI changes)
• Implement chosen navigation method

6. Testing

• Unit tests for CSV generation logic
• UI tests for selection and export functionality

7. Permissions and Error Handling

• Implement necessary permissions for file writing
• Add error handling and user feedback for export process

8. Localization

• Add new strings for CSV export feature to localization files

9. Documentation

• Update README with new CSV export feature
• Add in-code documentation for new classes and methods

Discussion Points

• Navigation approach: Separate screen vs. in-place UI changes
• Long-tap behavior: Trigger CSV export mode or default to delete mode
• UI design for selection indicators and export button
• Format and content of exported CSV file