Open official airport web forms prefilled (EGTF book-out, PPR, out-of-hours)

[roznet]

Summary

Some airports take movements through their own web pages — EGTF (Fairoaks) now wants a book-out, a PPR, and an out-of-hours form. Rather than submitting on the pilot's behalf, the app opens the official page prefilled from the flight; the pilot checks it and taps the site's own Submit.

• Server — web_form mapping type + POST /prefill: returns a fill plan (page URL + a value per input, keyed by the input's name). Keying by name means the same plan can drive a direct server-side submission later.
• Mappings: redatlas_bookout / redatlas_ppr (one mapping per RedAtlas form, https://{site}.redatlas.co.uk/... — other RedAtlas airports are an icao_list entry away; per-airport extra questions via airport_fields), egtf_ooh_departure / egtf_ooh_arrival (Elementor, scoped to the right form on the shared page).
• Return flight: book-outs get their return details from the first later flight landing back at the airport (new optional return_flight, has_return_flight flag). Separate from the connecting-flight search, which looks back for a departure.
• Direction: forms can be pinned to departure/arrival (validated, and used for local flights).
• Compatibility: web forms are only listed by GET /airports/{icao}?include_web=true; /airports never lists them, so older app builds are unaffected. /generate refuses web forms, /prefill refuses documents.
• App: web forms appear in the airport's section for the side they cover, with Open Prefilled → WebFormView (WKWebView, iOS + macOS). A banner reports filled fields and flags any not found on the page; Fill Again re-applies.
• Refactor: pdf_filler's canonical values move into build_values(), shared with fill plans — generated documents are unchanged (all snapshots pass).

Testing

• pytest: 182 passed. 2 failures are pre-existing on main and unrelated (TestPdfFillerLSGS::test_output_flattened, TestFrenchCustomsFiller::test_flattened).
• New tests/unit/test_web_form.py + /prefill integration tests.
• Fill script run against the live pages (headless Chromium, no submission): all fields on book-out (incl. return section, left enabled), PPR, and both out-of-hours forms take the right values and pass the pages' own validation.
• iOS simulator and macOS builds succeed; tested end-to-end in the macOS app against the local dev server (book-out incl. return).

Notes

• Out-of-hours times are filled in UK local time — the form doesn't say UTC or local; the rules are local, and the banner says so. Worth confirming with the tower.
• Elementor field names (form_fields[field_…]) are generated and change if the form is rebuilt; the app flags fields it can't find.
• Pilot = first crew member; phone/email from the responsible person.

🤖 Generated with Claude Code

https://claude.ai/code/session_01P3XXAkHdDjdoisPWZqmGaB

[claude]

Review

Went through the diff (Swift WebFormView/FlightEditView, the new /prefill endpoint, web_form.py, the mapping JSONs, and the design-doc updates). Overall this is well-scoped and well-tested (direction validation, return-flight dropping, transforms, checkbox ordering are all covered by unit/integration tests).

One correctness issue worth a look:

Return-flight lookup can silently skip a valid candidate — FlightEditView.swift:892-903

```swift
let back: Flight? = {
if flight.destinationICAO == airport { return flight }
...
return allFlights
.filter { ... && $0.destinationICAO == airport }
.min { $0.departureDateTime < $1.departureDateTime }
}()
guard let back, hasTimes(back) else { return nil }
```

back is picked purely by earliest departureDateTime, and only then checked for having times filled in. If that chronologically-first candidate has empty departureTimeUTC/arrivalTimeUTC (e.g. a flight stub the pilot hasn't finished entering yet), the whole lookup bails to nil instead of trying the next later flight that does land back at the airport with times set. The same applies to the local-flight case (flight.destinationICAO == airport): if the very flight being booked out hasn't had its own arrival time filled in yet, hasReturnFlight-driven fields are silently dropped with no indication to the pilot that anything's missing — it just looks like the return section wasn't needed. Given the return-flight fields exist specifically to save the pilot re-entering data, consider filtering to hasTimes candidates before taking .min, or at least surfacing to the user when a return was expected but omitted.

Nothing else stood out — the direction validation (validation.py), the build_values/build_fill_plan split, the include_web gating for backwards compatibility, and the WKWebView fill script (checkbox click-before-fields ordering, flatpickr/jQuery-autocomplete handling, single-fill-after-first-load guard) all look correct.

🤖 Generated with Claude Code