182 lines
6.7 KiB
Markdown
182 lines
6.7 KiB
Markdown
# Progress Tracking Enhancement - Work To Be Done (WTBD)
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## Summary
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Implemented comprehensive real-time download and transcription progress tracking for the YouTube Summarizer. The backend now sends granular progress updates via WebSocket, and the frontend components have been enhanced to display detailed metrics including download speed, ETA, and retry attempts.
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## Completed Work
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### Backend Enhancements
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#### 1. Base Downloader Progress Interface
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**File**: `backend/services/video_downloaders/base_downloader.py`
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- ✅ Added `DownloadProgress` dataclass with detailed metrics
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- ✅ Updated `download_video` signature to accept optional progress callback
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- ✅ Provides foundation for all downloader implementations
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#### 2. YT-DLP Progress Hook Implementation
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**File**: `backend/services/video_downloaders/ytdlp_downloader.py`
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- ✅ Implemented detailed progress reporting in `_progress_hook`
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- ✅ Extracts download percentage, speed, ETA, bytes downloaded
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- ✅ Handles async callbacks from sync context using `asyncio.create_task`
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- ✅ Includes retry attempt tracking and status messages
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#### 3. Intelligent Video Downloader WebSocket Integration
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**File**: `backend/services/intelligent_video_downloader.py`
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- ✅ Added WebSocket manager support in constructor
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- ✅ Implemented weighted progress calculation (30% method selection, 70% download)
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- ✅ Created `_send_progress_update` method for WebSocket communication
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- ✅ Passes progress callbacks to individual downloaders
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#### 4. Service Factory Updates
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**File**: `backend/services/service_factory.py`
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- ✅ Updated to provide WebSocket manager to TranscriptService
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- ✅ Maintains backward compatibility with optional WebSocket
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#### 5. Pipeline API Updates
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**File**: `backend/api/pipeline.py`
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- ✅ Updated `get_transcript_service` to include WebSocket manager
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- ✅ Ensures progress updates flow through entire pipeline
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### Frontend Enhancements
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#### 1. ProgressTracker Component
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**File**: `frontend/src/components/display/ProgressTracker.tsx`
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- ✅ Added `SubProgress` interface for download metrics
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- ✅ Enhanced UI with download progress section
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- ✅ Displays speed, ETA, bytes downloaded, retry attempts
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- ✅ Shows current download method badge
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- ✅ Includes helper functions for formatting bytes, speed, and time
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#### 2. ProcessingProgress Component
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**File**: `frontend/src/components/ProcessingProgress.tsx`
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- ✅ Complete rewrite with shadcn/ui components
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- ✅ Supports both download progress and chunk processing progress
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- ✅ Real-time WebSocket connection status indicator
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- ✅ Compact and expanded view modes
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- ✅ Type-safe progress detection with `isDownloadProgress` helper
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## Current Issues & Blockers
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### Database/Model Issues
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1. **SQLAlchemy Table Conflicts**: `rag_chunks` table already defined error
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2. **Missing Foreign Key**: `enhanced_exports.template_id` references non-existent `prompt_templates` table
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3. **Import Errors**: Some models causing circular dependencies
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### Temporary Workarounds Applied
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- Commented out `rag_models` import in `backend/models/__init__.py`
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- Disabled `multi_agent_router` in `backend/main.py`
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- Disabled `analysis_templates_router` in `backend/main.py`
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### Dependencies Added to venv
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```bash
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openai-whisper
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pydub
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yt-dlp
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pytubefix
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aiofiles
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playwright
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```
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## Testing Status
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### What Works
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- ✅ All backend progress tracking code is implemented
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- ✅ Frontend components are ready to display progress
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- ✅ WebSocket manager integration is complete
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- ✅ Progress callbacks properly propagate through service layers
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### What Needs Testing
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- ⏳ End-to-end progress tracking with actual video downloads
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- ⏳ WebSocket message delivery to frontend
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- ⏳ Multiple simultaneous downloads
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- ⏳ Error handling and retry progress reporting
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- ⏳ Performance impact of frequent progress updates
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## Next Steps for Development
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### Immediate Tasks
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1. **Fix Database Issues**
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- Resolve SQLAlchemy table definition conflicts
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- Fix missing foreign key references
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- Re-enable disabled routers
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2. **Complete Testing**
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- Start backend successfully with `./scripts/restart-backend.sh`
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- Test with a real YouTube video URL
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- Verify WebSocket updates reach frontend
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- Confirm progress bars update smoothly
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3. **Performance Optimization**
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- Consider throttling progress updates (e.g., every 500ms)
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- Optimize WebSocket message size
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- Add progress update batching if needed
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### Future Enhancements
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1. **Progress Persistence**
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- Save progress to database for resume capability
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- Show historical download speeds
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2. **Advanced Metrics**
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- Network quality indicator
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- Estimated cost for transcription
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- Success rate per download method
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3. **User Experience**
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- Add pause/resume functionality
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- Show thumbnail during download
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- Progress notifications when tab is not active
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## Code Quality Notes
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### What Was Done Well
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- Clean separation of concerns with callback pattern
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- Type-safe interfaces throughout
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- Backward compatibility maintained
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- Comprehensive error handling
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- Well-documented code with clear comments
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### Areas for Improvement
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- Some files exceed 300 LOC limit (need refactoring)
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- Consider extracting progress formatting utilities
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- May need rate limiting on WebSocket updates
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- Could add unit tests for progress calculations
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## Developer Notes
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### Testing Commands
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```bash
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# Start backend with dependencies
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cd /Users/enias/projects/my-ai-projects/apps/youtube-summarizer
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./venv/bin/pip install openai-whisper pydub yt-dlp pytubefix aiofiles playwright
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./venv/bin/python backend/main.py
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# Start frontend
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npm run dev
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# Test URL
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https://www.youtube.com/watch?v=dQw4w9WgXcQ
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```
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### Key Files Modified
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- `backend/services/video_downloaders/base_downloader.py`
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- `backend/services/video_downloaders/ytdlp_downloader.py`
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- `backend/services/intelligent_video_downloader.py`
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- `backend/services/transcript_service.py`
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- `backend/services/summary_pipeline.py`
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- `backend/services/service_factory.py`
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- `backend/api/pipeline.py`
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- `frontend/src/components/display/ProgressTracker.tsx`
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- `frontend/src/components/ProcessingProgress.tsx`
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### Architecture Decisions
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1. **Callback Pattern**: Used callbacks instead of events to maintain loose coupling
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2. **Weighted Progress**: 30/70 split between method selection and actual download
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3. **Sub-Progress Structure**: Flexible structure supports both download and chunk progress
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4. **Type Guards**: Frontend uses type guards to differentiate progress types
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## Contact for Questions
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This enhancement was implemented to address the issue where progress was stuck at 30% during long video downloads. The solution provides real-time visibility into the download process, including speed, ETA, and retry attempts.
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---
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*Last Updated: 2024-01-27*
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*Status: Implementation Complete, Testing Blocked by Database Issues* |