PHASE_2_CHECKLIST.md

Phase 2 Implementation Checklist

Track your progress implementing Phase 2 voice features.

Setup & Dependencies

• Review PHASE_2_VOICE_IMPLEMENTATION_PLAN.md
• Review PHASE_2_README.md
• Install system dependencies (portaudio, ffmpeg)
• Install Python dependencies: pip install -r requirements-phase2.txt
• Copy Phase 2 settings from .env.phase2.example to .env
• Set PHASE_2_ENABLED=true in .env
• Verify Whisper model downloads successfully

Core Modules

ASR Module (app/voice/asr.py)

• Create app/voice/asr.py
• Implement ASREngine class
• Implement transcribe() method
• Add confidence calculation
• Add language detection
• Test with sample audio files
• Test with Hindi audio
• Test with English audio
• Test with Gujarati audio
• Verify latency <2s

TTS Module (app/voice/tts.py)

• Create app/voice/tts.py
• Implement TTSEngine class
• Implement synthesize() method
• Add language mapping (en, hi, gu, etc.)
• Test with English text
• Test with Hindi text
• Test with Gujarati text
• Verify audio quality
• Verify latency <1s

Voice Fraud Detector (Optional) (app/voice/fraud_detector.py)

• Create app/voice/fraud_detector.py
• Implement VoiceFraudDetector class
• Implement detect_synthetic_voice() method
• Add resemblyzer integration (if enabled)
• Test with synthetic audio
• Test with real audio
• Verify detection accuracy

API Layer

Voice Endpoints (app/api/voice_endpoints.py)

• Create app/api/voice_endpoints.py
• Implement POST /api/v1/voice/engage
• Add file upload handling
• Add ASR integration
• Add Phase 1 pipeline integration
• Add TTS integration
• Add voice fraud integration (optional)
• Implement GET /api/v1/voice/audio/{filename}
• Implement GET /api/v1/voice/health
• Add error handling
• Add logging
• Test with curl
• Test with Postman

Voice Schemas (app/api/voice_schemas.py)

• Create app/api/voice_schemas.py
• Define VoiceEngageRequest
• Define VoiceEngageResponse
• Define TranscriptionMetadata
• Define VoiceFraudMetadata
• Add validation rules
• Test schema validation

UI Layer

Voice HTML (ui/voice.html)

• Create ui/voice.html
• Add header and title
• Add recording controls section
• Add recording status indicator
• Add start/stop buttons
• Add upload button
• Add session ID display
• Add conversation section
• Add message display area
• Add metadata section
• Add transcription display
• Add detection display
• Add voice fraud display (optional)
• Add intelligence section
• Test in Chrome
• Test in Firefox
• Test in Safari

Voice JavaScript (ui/voice.js)

• Create ui/voice.js
• Implement startRecording()
• Implement stopRecording()
• Implement uploadAudio()
• Implement sendAudioToAPI()
• Implement handleAPIResponse()
• Implement addMessage()
• Implement updateMetadata()
• Implement updateIntelligence()
• Add error handling
• Test microphone access
• Test file upload
• Test API integration
• Test audio playback

Voice CSS (ui/voice.css)

• Create ui/voice.css
• Style header
• Style recording controls
• Style recording status
• Style buttons
• Style conversation area
• Style messages (user/ai/system)
• Style metadata cards
• Style intelligence display
• Add responsive design
• Test on desktop
• Test on tablet
• Test on mobile

Integration

Main App Integration

• Update app/main.py to include voice router
• Add conditional import (only if PHASE_2_ENABLED=true)
• Add error handling for missing dependencies
• Test server startup with Phase 2 enabled
• Test server startup with Phase 2 disabled
• Verify Phase 1 endpoints still work

Config Integration

• Update app/config.py with Phase 2 settings
• Add PHASE_2_ENABLED field
• Add WHISPER_MODEL field
• Add TTS_ENGINE field
• Add VOICE_FRAUD_DETECTION field
• Add AUDIO_SAMPLE_RATE field
• Add AUDIO_CHUNK_DURATION field
• Test config loading

Environment Variables

• Update .env.example with Phase 2 variables
• Create .env.phase2.example
• Document all Phase 2 settings
• Test with different configurations

Testing

Unit Tests

• Create tests/unit/test_voice_asr.py
• Test ASR transcription
• Test language detection
• Test confidence calculation
• Create tests/unit/test_voice_tts.py
• Test TTS synthesis
• Test language mapping
• Create tests/unit/test_voice_fraud.py (optional)
• Test fraud detection
• Run all unit tests: pytest tests/unit/test_voice_*.py

Integration Tests

• Create tests/integration/test_voice_api.py
• Test voice engage endpoint
• Test audio file upload
• Test transcription flow
• Test Phase 1 integration
• Test TTS flow
• Test audio download
• Test health endpoint
• Run integration tests: pytest tests/integration/test_voice_api.py

End-to-End Tests

• Test full voice loop (record → transcribe → process → TTS → play)
• Test with English scam message
• Test with Hindi scam message
• Test with Gujarati scam message
• Test multi-turn conversation
• Test intelligence extraction from voice
• Test session persistence
• Verify latency <5s for full loop

Regression Tests

• Run all Phase 1 tests: pytest tests/
• Verify Phase 1 text endpoints work
• Verify Phase 1 UI works
• Verify no breaking changes

Performance

• Measure ASR latency
• Measure TTS latency
• Measure total loop latency
• Test with concurrent requests
• Test with large audio files
• Optimize if needed
• Document performance metrics

Documentation

• Review PHASE_2_VOICE_IMPLEMENTATION_PLAN.md
• Review PHASE_2_README.md
• Add inline code comments
• Add docstrings to all functions
• Update main README.md with Phase 2 info
• Create API documentation for voice endpoints
• Add troubleshooting guide
• Add examples

Deployment

Docker

• Update Dockerfile with Phase 2 dependencies
• Add conditional installation
• Test Docker build
• Test Docker run with Phase 2 enabled
• Test Docker run with Phase 2 disabled

Environment Setup

• Document system dependencies
• Document Python dependencies
• Create setup script (optional)
• Test on clean environment
• Test on Windows
• Test on Linux
• Test on Mac

Production Readiness

• Add monitoring for voice endpoints
• Add logging for voice operations
• Add error tracking
• Add rate limiting
• Add audio file cleanup
• Add security headers
• Test with production settings

Quality Assurance

Code Quality

• Run linter: flake8 app/voice/
• Run type checker: mypy app/voice/
• Run formatter: black app/voice/
• Fix all linting errors
• Fix all type errors
• Review code for best practices

Security

• Validate audio file uploads
• Add file size limits
• Add file type validation
• Sanitize file names
• Add rate limiting
• Test with malicious files
• Review security best practices

Accessibility

• Test keyboard navigation
• Test screen reader compatibility
• Add ARIA labels
• Test with assistive technologies

Final Checks

• All tests passing
• No linting errors
• Documentation complete
• Performance acceptable
• Security reviewed
• Phase 1 unaffected
• Ready for deployment

Post-Implementation

• Demo video recorded
• User guide created
• Training materials prepared
• Feedback collected
• Issues documented
• Future improvements planned

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Progress Summary

Total Tasks: 200+

Completed: _____ / 200+

In Progress: _____

Blocked: _____

Estimated Time Remaining: _____ hours

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Notes

Use this space to track issues, blockers, or important decisions:

[Date] [Note]
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Last Updated: [Date]

Status: 🚧 Not Started | 🟡 In Progress | ✅ Complete