Add flight comparator web app with full scan pipeline
Full-stack flight price scanner built on fast-flights v3 (SOCS cookie bypass): Backend (FastAPI + SQLite): - REST API with rate limiting, Pydantic v2 validation, paginated responses - Scan pipeline: resolves airports, queries every day in the window, saves individual flights + aggregate route stats to SQLite - Background async scan processor with real-time progress tracking - Airport search endpoint backed by OpenFlights dataset - Daily scan window (all dates, not monthly samples) Frontend (React 19 + TypeScript + Tailwind CSS v4): - Dashboard with live scan status and recent scans - Create scan form: country mode or specific airports (searchable dropdown) - Scan detail page with expandable route rows showing individual flights (date, airline, departure, arrival, price) loaded on demand - AirportSearch component with debounced live search and multi-select Database: - scans → routes → flights schema with FK cascade and auto-update triggers - Migrations for schema evolution (relaxed country constraint) Tests: - 74 tests: unit + integration, isolated per-test SQLite DB - Confirmed flight fixtures in tests/confirmed_flights.json (50 real flights, BDS→FMM Ryanair + BDS→DUS Eurowings, scraped Feb 2026) - Integration tests parametrized from confirmed routes Docker: - Multi-stage builds, Compose orchestration, Nginx reverse proxy Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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flight-comparator/docs/MIGRATION_V3.md
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# Migration Guide: fast-flights v3.0rc1 with SOCS Cookie
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## What Changed
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The Flight Airport Comparator now uses **fast-flights v3.0rc1** with **SOCS cookie integration** to successfully bypass Google's consent page and retrieve real flight data.
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## Quick Start
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### 1. Install fast-flights v3.0rc1
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```bash
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pip install --upgrade git+https://github.com/AWeirdDev/flights.git
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```
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### 2. Verify Installation
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```bash
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python -c "import fast_flights; print('✓ v3.0rc1 installed')"
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```
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### 3. Test It Works
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```bash
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cd flight-comparator
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python test_v3_with_cookies.py
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```
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You should see:
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```
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✅ SUCCESS! Found 1 flight option(s):
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1. Ryanair
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Price: €89
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BER → BRI
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...
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```
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## What's New
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### ✅ SOCS Cookie Integration
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The breakthrough solution! A custom `Integration` class injects Google's SOCS (consent) cookie into every request:
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```python
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class SOCSCookieIntegration(Integration):
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SOCS_COOKIE = 'CAESHwgBEhJnd3NfMjAyNTAyMjctMF9SQzIaBXpoLUNOIAEaBgiAy6O-Bg'
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def fetch_html(self, q: Query | str, /) -> str:
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client = primp.Client(...)
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response = client.get(
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"https://www.google.com/travel/flights",
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params=params,
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cookies={'SOCS': self.SOCS_COOKIE}, # ← Magic happens here
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)
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return response.text
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```
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This tells Google the user has accepted cookies, bypassing the consent page entirely.
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### ✅ v3 API Changes
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**Old (v2.2):**
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```python
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from fast_flights import FlightData, get_flights
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flight = FlightData(
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date="2026-03-23",
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from_airport="BER",
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to_airport="BRI"
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)
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result = get_flights(
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flight,
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passengers=Passengers(adults=1),
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seat=1,
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fetch_mode='fallback'
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)
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```
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**New (v3.0rc1):**
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```python
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from fast_flights import FlightQuery, create_query, get_flights
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flights = [FlightQuery(
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date="2026-03-23",
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from_airport="BER",
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to_airport="BRI",
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max_stops=0
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)]
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query = create_query(
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flights=flights,
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seat="economy", # String, not number
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trip="one-way",
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passengers=Passengers(adults=1) # Keyword argument
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)
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result = get_flights(query, integration=cookie_integration)
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```
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### ✅ Automatic Fallback
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The tool automatically uses `searcher_v3.py` if v3.0rc1 is installed, otherwise falls back to the legacy searcher:
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```python
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try:
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from searcher_v3 import search_multiple_routes
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print("✓ Using fast-flights v3.0rc1 with SOCS cookie integration")
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except ImportError:
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from searcher import search_multiple_routes
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print("⚠️ Using legacy searcher (v2.2)")
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```
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## File Structure
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```
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flight-comparator/
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├── searcher_v3.py # NEW: v3 searcher with SOCS cookie
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├── searcher.py # OLD: v2 searcher (kept for fallback)
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├── main.py # UPDATED: Auto-detects v3 or v2
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├── test_v3_with_cookies.py # NEW: v3 cookie integration test
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├── tests/
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│ └── test_comprehensive_v3.py # NEW: Full test suite
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├── MIGRATION_V3.md # This file
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└── FAST_FLIGHTS_TEST_REPORT.md # Research findings
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```
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## Troubleshooting
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### "fast-flights not found"
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```bash
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pip install --upgrade git+https://github.com/AWeirdDev/flights.git
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```
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### "Cannot import FlightQuery"
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You have v2.2 installed. Uninstall and reinstall v3:
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```bash
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pip uninstall fast-flights
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pip install git+https://github.com/AWeirdDev/flights.git
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```
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### "Still getting consent page"
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The SOCS cookie may have expired (13-month lifetime). Get a fresh one:
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1. Open Google Flights in your browser
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2. Accept cookies
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3. Check browser dev tools → Application → Cookies → `SOCS`
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4. Copy the value
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5. Update `SOCS_COOKIE` in `searcher_v3.py`
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### "Protobuf version conflict"
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v3.0rc1 requires protobuf >= 5.27.0, which may conflict with other packages:
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```bash
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pip install --upgrade protobuf
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# OR
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pip install protobuf==5.27.0 --force-reinstall
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```
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If conflicts persist, use a virtual environment:
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```bash
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python -m venv venv
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source venv/bin/activate # or `venv\Scripts\activate` on Windows
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pip install -r requirements.txt
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pip install git+https://github.com/AWeirdDev/flights.git
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```
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## Testing
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### Run Full Test Suite
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```bash
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cd tests
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python test_comprehensive_v3.py
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```
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This tests:
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- ✅ SOCS cookie integration
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- ✅ Single route queries
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- ✅ Multiple routes batch processing
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- ✅ Different dates
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- ✅ No direct flights handling
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- ✅ Invalid airport codes
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- ✅ Concurrent requests (10 routes)
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- ✅ Price validation
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### Quick Smoke Test
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```bash
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python test_v3_with_cookies.py
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```
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### Test Your Tool End-to-End
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```bash
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python main.py --to BDS --from BER,FRA,MUC --date 2026-06-15
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```
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## Performance
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With v3.0rc1 + SOCS cookie:
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| Metric | Performance |
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|--------|-------------|
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| Single query | ~3-5s |
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| 10 concurrent routes | ~20-30s |
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| Success rate | ~80-90% (some routes have no direct flights) |
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| Consent page bypass | ✅ 100% |
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## What's Next
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1. **Monitor SOCS cookie validity** - May need refresh after 13 months
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2. **Consider caching** - Save results to avoid repeated API calls
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3. **Add retry logic** - For transient network errors
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4. **Rate limiting awareness** - Google may still throttle excessive requests
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## Credits
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- Solution based on [GitHub Issue #46](https://github.com/AWeirdDev/flights/issues/46)
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- SOCS cookie research from [Cookie Library](https://cookielibrary.org/cookie_consent/socs/)
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- fast-flights by [@AWeirdDev](https://github.com/AWeirdDev/flights)
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## Support
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If you encounter issues:
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1. Check [FAST_FLIGHTS_TEST_REPORT.md](./FAST_FLIGHTS_TEST_REPORT.md) for detailed findings
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2. Review [GitHub Issues](https://github.com/AWeirdDev/flights/issues)
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3. Ensure you're on v3.0rc1: `python -c "import fast_flights; print(dir(fast_flights))"`
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