- Implement strict HTTP 200 validation (reject all other status codes)
- Add content-type validation (must be image/*)
- Add 10-second timeout protection with AbortController
- Thread progressCallback through all fetchImageAsBase64 calls
- Add detailed logging for each validation failure scenario
- Report validation failures via SSE progress callbacks
Unit tests:
- Add comprehensive test coverage for all validation scenarios
- Test HTTP status codes (200, 404, 403, 500, etc.)
- Test content-type validation (image/* vs text/html, etc.)
- Test timeout behavior with AbortController
- Test error handling (network errors, DNS, SSL, etc.)
- Test progress callback reporting
Integration tests:
- Add tests for complete extraction flow with URL failures
- Test fallback chain behavior (meta tags → poster → Instagram data → screenshot)
- Test real-world scenarios (redirects, query params, different post types)
Documentation:
- Enhanced JSDoc with validation criteria
- Added examples showing fallback behavior
- Documented all failure scenarios and their handling
All tests passing ✅
- Fix authentication header from 'Bearer' to 'Token' (DRF TokenAuth)
- Implement three-strategy upload system:
1. URL pass-through for direct URLs (most efficient)
2. Base64 data URL conversion for screenshots
3. Fallback blob upload for any other format
- Add comprehensive error handling with response details
- Add detailed logging for debugging upload strategies
- Document thumbnail formats in extractThumbnailStealth()
Fixes#30 - Tandoor image upload 400 Bad Request error
Based on Tandoor source code analysis (cookbook/views/api.py):
- RecipeImageSerializer accepts 'image_url' field for server-side download
- Uses Token authentication, not Bearer
- Supports multipart file upload with proper MIME types
- Add progressCallback parameter to extractFromEmbeddedJSON and extractFromDOM
- Pass onProgress callback from extractWithStrategies to all strategies
- Fix legacy strategy to use correct callback variable name
- Verify extractViaGraphQL correctly returns null thumbnail
This fixes ReferenceError that was preventing all extraction methods from working.
All extraction strategies now properly emit thumbnail progress events via SSE.
Closes: FixProgressCallbackUndefinedErrors
