// Airport database — used for display names and fallback when backend doesn't return full info.
window.AIRPORTS = {
  CDG: { city: "Paris",          name: "Charles de Gaulle",       lat: 49.0097,  lon:   2.5479, iata: "CDG" },
  ORY: { city: "Paris",          name: "Orly",                    lat: 48.7233,  lon:   2.3794, iata: "ORY" },
  LHR: { city: "Londres",        name: "Heathrow",                lat: 51.4700,  lon:  -0.4543, iata: "LHR" },
  JFK: { city: "New York",       name: "JFK",                     lat: 40.6413,  lon: -73.7781, iata: "JFK" },
  LAX: { city: "Los Angeles",    name: "LAX",                     lat: 33.9416,  lon:-118.4085, iata: "LAX" },
  SFO: { city: "San Francisco",  name: "SFO",                     lat: 37.6213,  lon:-122.3790, iata: "SFO" },
  NRT: { city: "Tokyo",          name: "Narita",                  lat: 35.7720,  lon: 140.3929, iata: "NRT" },
  HND: { city: "Tokyo",          name: "Haneda",                  lat: 35.5494,  lon: 139.7798, iata: "HND" },
  HKG: { city: "Hong Kong",      name: "Chek Lap Kok",            lat: 22.3080,  lon: 113.9185, iata: "HKG" },
  SIN: { city: "Singapour",      name: "Changi",                  lat:  1.3644,  lon: 103.9915, iata: "SIN" },
  DXB: { city: "Dubaï",          name: "Dubaï International",     lat: 25.2532,  lon:  55.3657, iata: "DXB" },
  DOH: { city: "Doha",           name: "Hamad",                   lat: 25.2731,  lon:  51.6080, iata: "DOH" },
  FRA: { city: "Francfort",      name: "Frankfurt",               lat: 50.0379,  lon:   8.5622, iata: "FRA" },
  AMS: { city: "Amsterdam",      name: "Schiphol",                lat: 52.3105,  lon:   4.7683, iata: "AMS" },
  MAD: { city: "Madrid",         name: "Barajas",                 lat: 40.4983,  lon:  -3.5676, iata: "MAD" },
  FCO: { city: "Rome",           name: "Fiumicino",               lat: 41.8003,  lon:  12.2389, iata: "FCO" },
  BCN: { city: "Barcelone",      name: "El Prat",                 lat: 41.2974,  lon:   2.0833, iata: "BCN" },
  IST: { city: "Istanbul",       name: "Istanbul Airport",        lat: 41.2611,  lon:  28.7421, iata: "IST" },
  GRU: { city: "São Paulo",      name: "Guarulhos",               lat:-23.4356,  lon: -46.4731, iata: "GRU" },
  EZE: { city: "Buenos Aires",   name: "Ezeiza",                  lat:-34.8222,  lon: -58.5358, iata: "EZE" },
  SYD: { city: "Sydney",         name: "Kingsford Smith",         lat:-33.9399,  lon: 151.1753, iata: "SYD" },
  YYZ: { city: "Toronto",        name: "Pearson",                 lat: 43.6777,  lon: -79.6248, iata: "YYZ" },
  YVR: { city: "Vancouver",      name: "Vancouver",               lat: 49.1939,  lon:-123.1844, iata: "YVR" },
  ICN: { city: "Séoul",          name: "Incheon",                 lat: 37.4602,  lon: 126.4407, iata: "ICN" },
  PEK: { city: "Pékin",          name: "Capital",                 lat: 40.0799,  lon: 116.6031, iata: "PEK" },
  PVG: { city: "Shanghai",       name: "Pudong",                  lat: 31.1443,  lon: 121.8083, iata: "PVG" },
  BOM: { city: "Mumbai",         name: "Chhatrapati Shivaji",     lat: 19.0896,  lon:  72.8656, iata: "BOM" },
  DEL: { city: "Delhi",          name: "Indira Gandhi",           lat: 28.5562,  lon:  77.1000, iata: "DEL" },
  JNB: { city: "Johannesburg",   name: "OR Tambo",                lat:-26.1392,  lon:  28.2460, iata: "JNB" },
  CAI: { city: "Le Caire",       name: "Cairo Intl.",             lat: 30.1219,  lon:  31.4056, iata: "CAI" },
  MEX: { city: "Mexico",         name: "Benito Juárez",           lat: 19.4361,  lon: -99.0719, iata: "MEX" },
  ORD: { city: "Chicago",        name: "O'Hare",                  lat: 41.9742,  lon: -87.9073, iata: "ORD" },
  ATL: { city: "Atlanta",        name: "Hartsfield-Jackson",      lat: 33.6407,  lon: -84.4277, iata: "ATL" },
  MIA: { city: "Miami",          name: "Miami Intl.",             lat: 25.7959,  lon: -80.2870, iata: "MIA" },
  BOS: { city: "Boston",         name: "Logan",                   lat: 42.3656,  lon: -71.0096, iata: "BOS" },
  SEA: { city: "Seattle",        name: "Sea-Tac",                 lat: 47.4502,  lon:-122.3088, iata: "SEA" },
  GVA: { city: "Genève",         name: "Genève",                  lat: 46.2381,  lon:   6.1090, iata: "GVA" },
  ZRH: { city: "Zurich",         name: "Zurich",                  lat: 47.4647,  lon:   8.5492, iata: "ZRH" },
  MUC: { city: "Munich",         name: "Munich",                  lat: 48.3538,  lon:  11.7861, iata: "MUC" },
  LIS: { city: "Lisbonne",       name: "Humberto Delgado",        lat: 38.7813,  lon:  -9.1359, iata: "LIS" },
  CPH: { city: "Copenhague",     name: "Kastrup",                 lat: 55.6180,  lon:  12.6560, iata: "CPH" },
  ARN: { city: "Stockholm",      name: "Arlanda",                 lat: 59.6519,  lon:  17.9186, iata: "ARN" },
  HEL: { city: "Helsinki",       name: "Vantaa",                  lat: 60.3172,  lon:  24.9633, iata: "HEL" },
  KEF: { city: "Reykjavik",      name: "Keflavik",                lat: 63.9850,  lon: -22.6056, iata: "KEF" },
  ANC: { city: "Anchorage",      name: "Ted Stevens",             lat: 61.1744,  lon:-149.9961, iata: "ANC" },
  NCE: { city: "Nice",           name: "Côte d'Azur",             lat: 43.6584,  lon:   7.2159, iata: "NCE" },
  MRS: { city: "Marseille",      name: "Marseille Provence",      lat: 43.4393,  lon:   5.2214, iata: "MRS" },
  TLS: { city: "Toulouse",       name: "Blagnac",                 lat: 43.6293,  lon:   1.3638, iata: "TLS" },
  LYS: { city: "Lyon",           name: "Saint-Exupéry",           lat: 45.7256,  lon:   5.0811, iata: "LYS" },
  EWR: { city: "New York",       name: "Newark",                  lat: 40.6895,  lon: -74.1745, iata: "EWR" },
};

// Map backend risk value ("moderate") to the CSS class used by the UI ("mod").
function toRiskClass(r) {
  return r === "moderate" ? "mod" : r;
}

// Call POST /flight on the backend, then transform the response into the
// { trajectory, meta, solarEvent } shape that app.jsx expects.
window.buildTrajectory = async function buildTrajectory({ depIata, arrIata, date, departureTime, flightNumber }) {
  var body = {
    departure_iata: depIata,
    arrival_iata:   arrIata,
    date:           date,
    departure_time: departureTime || "10:00",
  };
  if (flightNumber) body.flight_number = flightNumber;

  var resp = await fetch("/flight", {
    method:  "POST",
    headers: { "Content-Type": "application/json" },
    body:    JSON.stringify(body),
  });

  if (!resp.ok) {
    var err = await resp.json().catch(function () { return {}; });
    throw new Error(err.detail || "Erreur serveur");
  }

  var data = await resp.json();
  var fi   = data.flight_info;

  // Trajectory object — shape consumed by ResultPanel and TrajectoryMap
  var trajectory = {
    totalDose:     data.total_dose_usv,
    lowDose:       data.lower_usv,
    highDose:      data.upper_usv,
    totalRisk:     toRiskClass(data.risk_level),
    distanceKm:    fi.distance_km,
    durationHours: fi.duration_min / 60,
    samples: data.waypoints.map(function (wp) {
      return {
        lat:      wp.lat,
        lon:      wp.lon,
        altFt:    Math.round(wp.alt_km * 3280.84),
        doseRate: wp.dose_usvh,
        risk:     toRiskClass(wp.risk_level),
      };
    }),
  };

  // Meta object — shape consumed by ResultPanel
  var fallback = function (iata) {
    return { iata: iata, city: iata, name: iata, lat: 0, lon: 0 };
  };
  var fromAp = fi.from_airport || window.AIRPORTS[fi.departure] || fallback(fi.departure);
  var toAp   = fi.to_airport   || window.AIRPORTS[fi.arrival]   || fallback(fi.arrival);
  var cruiseFt = parseInt(fi.cruise_altitude.replace("FL", ""), 10) * 100;

  var meta = {
    flightNo: fi.flight_number,
    airline:  fi.airline,
    fromAp:   fromAp,
    toAp:     toAp,
    date:     date,
    cruiseFt: cruiseFt,
    kpUsed:   fi.kp_used,
    dataSource: fi.solar_data_source,
  };

  var solarEvent = data.solar_event || null;

  return { trajectory: trajectory, meta: meta, solarEvent: solarEvent };
};