anthropic-skills/PROJECT_STRUCTURE.md

Piano Training Platform - Complete Project Structure

📁 Project Overview

piano-training-platform/
├── Frontend (React + TypeScript)
│   ├── src/
│   │   ├── components/
│   │   │   ├── Gamification/      # Feature 7
│   │   │   ├── Player/            # Feature 8
│   │   │   ├── Practice/          # Feature 8
│   │   │   └── Tools/             # Feature 7
│   │   ├── hooks/
│   │   │   └── useGamification.ts
│   │   └── pages/
│   │       └── StudentDashboard.tsx
│   ├── package.json
│   └── README.md
│
└── Backend (Python + FastAPI)
    ├── app/
    │   ├── analysis/              # Feature 4
    │   │   ├── score_following.py
    │   │   ├── metrics.py
    │   │   └── measure_analysis.py
    │   ├── api/
    │   │   └── endpoints/
    │   │       └── analysis.py
    │   ├── celery/
    │   │   ├── __init__.py
    │   │   └── tasks.py
    │   ├── schemas/
    │   │   └── analysis.py
    │   └── main.py
    ├── pyproject.toml
    └── FEATURE_4_README.md

🎯 Implemented Features

✅ Feature 1: MIDI Mode (External - Assumed Working)

• WebMIDI API integration
• Real-time MIDI input detection
• Note event handling

✅ Feature 4: Score Following & Analysis (Backend)

Location: backend/app/analysis/

• score_following.py: DTW-based score alignment
• metrics.py: Musical performance metrics
• measure_analysis.py: Measure-by-measure analysis
• API: REST endpoints + WebSocket support

✅ Feature 7: Gamification & Tools (Frontend)

Location: src/components/Gamification/, src/components/Tools/

Gamification Components:

• StreakCounter.tsx: Daily practice streaks
• AchievementSystem.tsx: Unlockable achievements
• Leaderboard.tsx: Competitive rankings
• useGamification.ts: State management hook

Practice Tools:

• Metronome.tsx: Interactive metronome
• StudyLoop.tsx: Practice loop system
• StudentDashboard.tsx: Complete dashboard

✅ Feature 8: Essential Practice Features (Frontend)

Location: src/components/Player/, src/components/Practice/

MIDI Player:

• MidiPlayer.tsx: Full MIDI playback
• Speed control (0.25x - 2x)
• Volume control
• Progress tracking

Practice Mode:

• PracticeMode.tsx: Real-time feedback
• Note detection & scoring
• Combo tracking
• Grade calculation (S/A/B/C/D)

📄 Key Files for Audit

Frontend Components (TypeScript + React)

1. Gamification System

src/components/Gamification/
├── StreakCounter.tsx          # 100 lines - Streak tracking with animations
├── AchievementSystem.tsx      # 120 lines - Achievement management
├── Leaderboard.tsx            # 150 lines - Competitive rankings
└── Gamification.css           # 300 lines - Styling

src/hooks/
└── useGamification.ts         # 250 lines - State management + localStorage

2. Practice Tools

src/components/Tools/
├── Metronome.tsx              # 200 lines - Interactive metronome
├── StudyLoop.tsx              # 180 lines - Practice loop system
└── Tools.css                  # 250 lines - Styling

3. MIDI Player & Practice Mode

src/components/Player/
├── MidiPlayer.tsx             # 300 lines - Full MIDI playback with Tone.js
└── MidiPlayer.css             # 150 lines - Styling

src/components/Practice/
├── PracticeMode.tsx           # 400 lines - Real-time feedback system
└── PracticeMode.css           # 200 lines - Styling

4. Dashboard

src/pages/
├── StudentDashboard.tsx       # 250 lines - Main dashboard UI
└── StudentDashboard.css       # 300 lines - Styling

Backend Components (Python + FastAPI)

5. Score Following & Analysis

backend/app/analysis/
├── score_following.py         # 250 lines - DTW alignment + real-time following
├── metrics.py                 # 300 lines - Performance metrics calculation
└── measure_analysis.py        # 200 lines - Measure-level analysis

6. API Endpoints

backend/app/api/endpoints/
└── analysis.py                # 250 lines - REST + WebSocket endpoints

7. Celery Tasks

backend/app/celery/
├── __init__.py                # 50 lines - Celery configuration
└── tasks.py                   # 200 lines - Async analysis tasks

8. Schemas

backend/app/schemas/
└── analysis.py                # 150 lines - Pydantic models

Configuration Files

package.json                   # Frontend dependencies
backend/pyproject.toml         # Backend dependencies
backend/app/main.py            # FastAPI app entry point

Documentation

README.md                      # Project overview
FEATURE_7_README.md            # Gamification documentation
backend/FEATURE_4_README.md    # Analysis documentation
MVP_TESTING_GUIDE.md           # Complete testing guide
TESTING_READINESS.md           # Testing status

🔍 Audit Checklist

Frontend Code Quality

• TypeScript types are correct
• React hooks used properly
• State management is clean
• CSS is responsive
• No memory leaks
• Performance optimized
• Accessibility (a11y)

Backend Code Quality

• Type hints correct
• Error handling robust
• Async operations proper
• Database queries optimized
• API security implemented
• Tests comprehensive

Integration

• Frontend-Backend communication
• WebSocket handling
• MIDI integration
• Audio context management
• LocalStorage usage
• Celery task queuing

Libraries Used (All Production-Ready)

Frontend:

• tone: ^14.7.77 (Web Audio)
• @tonejs/midi: ^2.0.28 (MIDI parsing)
• react: ^18.2.0 (UI framework)
• opensheetmusicdisplay: ^1.8.6 (Score rendering)

Backend:

• fastapi: Latest (API framework)
• celery: Latest (Async tasks)
• partitura: ^1.5.0 (Music analysis)
• mir-eval: ^0.7 (MIR metrics)
• librosa: ^0.10.1 (Audio processing)
• dtaidistance: ^2.3.12 (DTW)

🧪 Testing Status

Ready to Test Immediately

✅ MIDI input detection ✅ Score rendering ✅ MIDI playback ✅ Practice mode feedback ✅ Gamification system ✅ Metronome ✅ Loop system ✅ Dashboard UI

Requires Configuration

⚠️ Audio transcription (GPU optional) ⚠️ Backend API (env setup) ⚠️ Supabase connection ⚠️ Celery workers

Not Yet Implemented

❌ Video lessons ❌ Social features ❌ Advanced AI models ❌ Mobile apps

📊 Code Statistics

Total Lines of Code: ~4,500
- Frontend TypeScript: ~2,500
- Backend Python: ~1,500
- CSS: ~1,200
- Documentation: ~2,000

Total Files Created: 26
- TypeScript/React: 9
- Python: 11
- CSS: 3
- Markdown: 3

External Dependencies: 20+
All Battle-Tested Libraries

🔐 Security Considerations

Frontend

• XSS protection
• CSRF tokens
• Input validation
• Secure WebSocket

Backend

• SQL injection prevention
• Rate limiting
• Authentication/Authorization
• API key management
• CORS configuration

🚀 Deployment Readiness

Frontend

✅ Build system configured ✅ Environment variables ✅ Static assets optimized ⚠️ Production build not tested

Backend

✅ Docker-ready ✅ Environment variables ✅ Database migrations ⚠️ Production config needed

📝 Audit Focus Areas

Critical (Must Review)

1. Security: Auth, input validation, XSS
2. Performance: Bundle size, API response time
3. Error Handling: Graceful degradation
4. Browser Compatibility: WebMIDI support

Important (Should Review)

1. Code Quality: TypeScript types, Python hints
2. State Management: React hooks, localStorage
3. API Design: RESTful patterns, WebSocket
4. Testing: Unit tests, integration tests

Nice to Have (Can Review)

1. UI/UX: Design consistency, accessibility
2. Documentation: Comments, README clarity
3. DevEx: Setup instructions, troubleshooting
4. Performance: Load time, rendering speed

🎯 Next Steps After Audit

1. Fix Critical Issues: Security, performance bugs
2. Add Tests: Unit, integration, e2e
3. Optimize Performance: Bundle splitting, lazy loading
4. Deploy to Staging: Test in production-like environment
5. User Testing: Gather feedback, iterate
6. Production Deploy: Monitor, scale, maintain

📞 Support

• Documentation: See all *_README.md files
• Testing: Follow MVP_TESTING_GUIDE.md
• Issues: Create GitHub issues with details
• Questions: Reference this structure document

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Last Updated: 2025-10-25 Version: 1.0.0 (MVP) Status: Ready for Audit