Story s.1.3: TUI Framework Integration

[dmisiuk]

Story s.1.3: TUI Framework Integration

Epic: 1 - Acoustic Calculator Application

Story: 3 - TUI Framework Integration

Summary

As a user, I want a terminal-based user interface with mouse support, so that I can interact with the calculator using visual buttons and keyboard navigation.

Acceptance Criteria

1. TUI framework (Bubble Tea) is integrated into the project
   • Source: Milestone 1.3 - TUI Framework Integration
2. A basic calculator layout with buttons is displayed
   • Source: Milestone 1.3 - Basic UI layout and buttons
3. Mouse events (clicks) are handled and trigger calculator actions
   • Source: Milestone 1.3 - Mouse event handling validation
4. Keyboard navigation is supported for accessibility
   • Source: Milestone 1.3 - Keyboard navigation
5. Basic visual feedback is provided for user interactions
   • Source: Milestone 1.3 - Basic visual feedback

Key Implementation Requirements

• Technology Stack: Go 1.21+, Bubble Tea framework
• Integration: Connect TUI to existing calculator engine (pkg/calculator/)
• Features: Mouse events, keyboard navigation, visual feedback
• Performance: Visual feedback latency < 100ms, works on 80x24 terminals
• Testing: >85% test coverage for new TUI code

Files to be Created/Modified

• pkg/tui/ - New TUI package directory
• pkg/tui/model.go - TUI model implementing bubbletea.Model
• pkg/tui/view.go - Button grid layout rendering
• pkg/tui/update.go - Mouse and keyboard event handling
• cmd/acousticalc/main.go - Update to launch TUI
• Test files for TUI components

Success Metrics

• Mouse clicks register correctly on all buttons
• Keyboard navigation covers all functions
• Visual feedback latency < 100ms
• Test coverage >85% for new TUI code
• TUI works on terminals as small as 80x24 characters

QA Status

Risk Score: 61/100 (Medium Risk)
Quality Score: 85/100
Test Design: 28 scenarios designed (15 unit, 10 integration, 3 E2E)

Key Risks:

• Bubble Tea integration complexity requires adapter pattern
• UI rendering performance needs optimization
• State management between TUI and calculator engine