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feat: implement image proxy for YouTube CDN images with caching to prevent rate limits

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Yusuf İpek
2025-10-11 20:34:25 +03:00
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commit 7b43932fa6
7 changed files with 149 additions and 13 deletions
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memory-bank/activeContext.md
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- **Rich message parsing**: Full support for superchats, memberships, badges (moderator, member, verified)
- **Timezone-aware timestamps**: All message timestamps display in user's local timezone with proper browser detection
- **Visual selection feedback**: Previously selected messages show dimmed state for better user experience
- **Image proxy implemented**: Backend proxies all YouTube CDN images with caching to prevent 429 rate limit errors
## Recent Decisions
- Fixed CORS issues by setting headers on raw response object after `reply.hijack()` for SSE endpoint
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- **Timezone Support**: Implemented browser timezone detection and proper timestamp formatting across dashboard and overlay using `Intl.DateTimeFormat` with GMT+3 fallback.
- **Visual Selection States**: Added three-tier visual feedback system - active (selected), normal, and previously-selected (dimmed) states for better user experience.
- **UI Polish**: Fixed pulse animations on initial load, hidden N/A messages, and improved overlay timestamp display.
- **Image Proxy**: Added `/proxy/image` endpoint in backend with in-memory caching (24hr TTL, max 1000 images) to prevent YouTube CDN 429 rate limit errors. All avatars, badges, and emojis now route through proxy with stale-on-error fallback.
## Immediate Next Steps
1. Test with live YouTube stream to verify badge parsing and superchat detection
2. Add search/filter functionality for chat messages
3. Implement error recovery and reconnection logic for stream interruptions
4. Add keyboard shortcuts for quick message selection
5. Consider persistent cache for images (SQLite or file-based) for better reliability
## Open Questions
- Whether to add message search/filtering UI controls
- How to handle rate limiting and backoff strategies for long streams
- Whether to persist Innertube visitor data between runs
- Should image cache be persistent across restarts?