08914dc469
Implements a comprehensive structured logging system to replace verbose console.* calls throughout the codebase, addressing all cleanup tasks from CLEANUP.md. ( #4 )
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# Structured Logging System Implementation
## Summary
Implements a comprehensive structured logging system to replace verbose console.* calls throughout the codebase, addressing all cleanup tasks from CLEANUP.md.
## What Changed
### Core Features
- ✅ **Structured Logging System** - New `lib/logger.ts` with DEBUG, INFO, WARN, ERROR levels
- ✅ **Environment-Based Control** - `LOG_LEVEL` env var controls verbosity (DEBUG/INFO/WARN/ERROR/NONE)
- ✅ **JSON Logging Option** - `LOG_FORMAT=json` for structured JSON output
- ✅ **Shared Constants** - Extracted session cookie name to `lib/constants.ts`
### Code Refactoring
- ✅ Replaced all `console.*` calls in API routes with structured logger
- ✅ Refactored `activity-log.ts` to use new logger system
- ✅ Reduced verbose logging in auth, photos page, and upload routes
- ✅ Updated proxy.ts to use structured logging
- ✅ Removed unused legacy `/api/photos` route (replaced by `/api/photos/upload`)
### Security Improvements
- ✅ Protected `/api/debug/session` endpoint with admin-only access
- ✅ Added proper error logging with structured context
### Documentation
- ✅ Documented multiple upload routes usage
- ✅ Enhanced watch-activity.sh script documentation
- ✅ Updated README.md with upload endpoint information
- ✅ Added configuration documentation to next.config.ts
### Testing
- ✅ Added 23 tests for logger system
- ✅ Added 8 tests for refactored activity-log
- ✅ All 43 tests passing
## Benefits
1. **Production-Ready Logging** - Environment-based control, defaults to INFO in production
2. **Reduced Verbosity** - DEBUG logs only show in development or when explicitly enabled
3. **Structured Output** - JSON format option for log aggregation tools
4. **Better Organization** - Shared constants, consistent logging patterns
5. **Improved Security** - Debug endpoint now requires admin access
## Testing
### Manual Testing
- ✅ Server builds successfully
- ✅ All tests pass (43/43)
- ✅ Type checking passes
- ✅ Linting passes
- ✅ Production server runs with logs visible
- ✅ Log levels work correctly (DEBUG shows all, INFO shows activity, etc.)
### Test Coverage
- Logger system: 100% coverage
- Activity log: 100% coverage
- All existing tests still pass
## Configuration
### Environment Variables
```bash
# Control log verbosity (DEBUG, INFO, WARN, ERROR, NONE)
LOG_LEVEL=INFO
# Use structured JSON logging
LOG_FORMAT=json
```
### Defaults
- Development: `LOG_LEVEL=DEBUG` (shows all logs)
- Production: `LOG_LEVEL=INFO` (shows activity and above)
## Migration Notes
- No breaking changes (legacy route was unused)
- All existing functionality preserved
- Logs are now structured and filterable
- Debug endpoint now requires admin authentication
- Legacy `/api/photos` endpoint removed (use `/api/photos/upload` instead)
## Checklist
- [x] All console.* calls replaced in API routes
- [x] Logger system implemented with tests
- [x] Activity logging refactored
- [x] Debug endpoint protected
- [x] Documentation updated
- [x] All tests passing
- [x] Type checking passes
- [x] Linting passes
- [x] Build succeeds
- [x] Manual testing completed
## Related Issues
Addresses cleanup tasks from CLEANUP.md:
- Task 1: Verbose logging in production ✅
- Task 2: Activity logging optimization ✅
- Task 3: Upload verification logging ✅
- Task 4: Middleware debug logging ✅
- Task 5: Legacy upload route documentation ✅
- Task 6: Multiple upload routes documentation ✅
- Task 7: Cookie name constant extraction ✅
- Task 8: Next.js config documentation ✅
- Task 9: ARCHITECTURE.md (already correct) ✅
- Task 10: Watch activity script documentation ✅
Reviewed-on: #4
2026-01-04 19:42:49 -05:00
