import { test, expect, type Page } from '@playwright/test';

// v0.15.0 — ISS-002: hovering a plane or package in either side panel highlights it on the map.
// Fleet rows + on-board blocks highlight the plane marker (and its route leg while flying);
// open-package rows highlight both endpoint airports. The map exposes three top-most
// highlight layers (planes-highlight / routes-highlight / airports-highlight), each filtered
// to match nothing until a hover sets the filter — asserted here via window.__flightMap's
// queryRenderedFeatures, same pattern as e2e/map.spec.ts and e2e/map-interactions.spec.ts.
// ISS-022/025/027 (v0.22.0): any hover carrying two endpoints ALSO draws the full great-circle
// trace between them in a fourth top-most layer (`hover-route`, dashed) — job-list rows, on-board
// cargo rows and the Relocate section; the relocate preview rings only its TARGET airport, which
// additionally gets a distinct green ring in `airports-target-highlight` (ISS-022).

const SCALE = 1000; // fastest sim speed (v0.14.0 ladder top) — keeps flights to seconds of real time
const HUB = 'EDDF'; // must match HUB_ICAO in lib/game/seed.ts
// Madrid–Barajas — same long leg as e2e/map-interactions.spec.ts: ~1420 km → ~10 s at scale 1000.
const DEST = 'LEMD';

interface PlaneState {
  id: string;
  model: string;
  status: 'available' | 'flying';
  fuel: number;
  maxFuel: number;
  locationIcao: string;
  destIcao: string | null;
  lat: number; // live position — interpolated per snapshot while flying, airport coords when grounded
  lon: number;
}

interface PackageState {
  id: string;
  originName: string;
  destName: string;
  reward: number;
  status: 'open' | 'loaded' | 'delivered' | 'expired' | 'abandoned';
  planeId: string | null;
}

interface StateBody {
  account: { cash: number; reputation: number };
  simState: { clockMs: number; timeScale: number; paused: boolean };
  planes: PlaneState[];
  packages: PackageState[];
}

async function getState(page: Page): Promise<StateBody> {
  const res = await page.request.get('/api/state');
  expect(res.status()).toBe(200);
  return (await res.json()) as StateBody;
}

async function postSim(page: Page, body: unknown) {
  return page.request.post('/api/sim', { data: body });
}

// Set the time scale and VERIFY from the response that it stuck — a silent reset would
// otherwise surface as an unexplained landing-wait timeout. ISS-041 also clears pause: a
// landing pauses the sim, so any fast-forward after one must resume it or the clock stays frozen.
async function setScale(page: Page, scale: number): Promise<void> {
  const res = await page.request.post('/api/sim', { data: { timeScale: scale, paused: false } });
  expect(res.status()).toBe(200);
  const body = (await res.json()) as { timeScale: number };
  expect(body.timeScale, `timeScale should be ${scale} after POST /api/sim`).toBe(scale);
}

// Leave the live instance in a sane state for the other specs (scale 1, running).
test.afterEach(async ({ page }) => {
  const res = await postSim(page, { timeScale: 1, paused: false });
  expect(res.status()).toBe(200);
});

// Test hook (FLIGHT_TEST_HOOKS=1): create an open package on a known route.
async function createPackage(page: Page, fromIcao: string, toIcao: string): Promise<PackageState> {
  const created = await page.request.post('/api/test/create-package', {
    data: { originIcao: fromIcao, destIcao: toIcao, deadlineOffsetMs: 24 * 3_600_000 },
  });
  expect(created.status()).toBe(201);
  return (await created.json()) as PackageState;
}

// Self-heal: let any in-flight leg finish, then reposition plane-starter home via the API.
async function flyHomeViaApi(page: Page): Promise<void> {
  const s0 = await getState(page);
  const starter = s0.planes.find((p) => p.id === 'plane-starter')!;
  if (starter.status === 'flying' || starter.locationIcao !== HUB) {
    // Fast-forward any leftover leg / repositioning flight (~20 s real time worst case at 1000×).
    await setScale(page, SCALE);
  }
  if (starter.status === 'flying') {
    await expect
      .poll(async () => (await getState(page)).planes.find((p) => p.id === 'plane-starter')?.status === 'available', {
        timeout: 240_000,
        message: 'waiting for an in-flight plane-starter to land',
      })
      .toBe(true);
  }
  if (starter.locationIcao !== HUB) {
    // ISS-041: the landing above paused the sim — setScale clears pause so the return leg
    // fast-forwards instead of taking real-time hours.
    await setScale(page, SCALE);
    const res = await page.request.post('/api/planes/plane-starter/fly', { data: { destIcao: HUB } });
    expect(res.status()).toBe(200); // repositioning needs no package (v0.12.0 manual flight)
    await expect
      .poll(async () => (await getState(page)).planes.find((p) => p.id === 'plane-starter')?.locationIcao === HUB, {
        timeout: 240_000,
        message: 'waiting for plane-starter to land back at the hub',
      })
      .toBe(true);
  }
}

async function waitForAirportCount(page: Page): Promise<void> {
  const countEl = page.getByTestId('airport-count');
  await expect.poll(async () => {
    const text = (await countEl.textContent()) ?? '';
    const m = text.match(/(\d+)/);
    return m ? parseInt(m[1], 10) : -1;
  }).toBeGreaterThan(0);
}

// Rendered features of the given layers in the current viewport, [] until the map exists.
function renderedFeatures(
  page: Page,
  layers: string[],
): Promise<Array<{ type?: unknown; id?: unknown; properties?: unknown; geometry?: unknown }>> {
  return page.evaluate((ls: string[]) => {
    const m = (window as any).__flightMap;
    if (!m) return [];
    try {
      // queryRenderedFeatures returns live GeoJSONFeature instances whose `geometry` is a lazy
      // PROTOTYPE getter — Playwright's evaluate serialization copies only own enumerable props,
      // so geometry silently vanishes across the page boundary (CI runs #69–#71: strict-equality
      // timeouts → TypeError on f.geometry.coordinates → filter-found-nothing timeouts). Map to
      // plain objects IN-PAGE so the getter is evaluated before serialization.
      return (m.queryRenderedFeatures(undefined, { layers: ls }) as Array<{
        type?: unknown;
        id?: unknown;
        properties?: unknown;
        geometry?: unknown;
      }>).map((f) => ({
        type: f.type,
        id: f.id,
        properties: f.properties,
        geometry: f.geometry,
      }));
    } catch {
      return [];
    }
  }, layers);
}

// Move the pointer to a neutral element with no hover handler — leaves any hovered row/block.
async function unhover(page: Page): Promise<void> {
  await page.getByTestId('wallet-cash').hover();
}

// Fit the map so all given airports are in-viewport — queryRenderedFeatures only returns
// features rendered inside the CURRENT viewport, and the default Frankfurt-centered view leaves
// far endpoints (LEMD) off-screen even when they match a layer filter.
async function fitToAirports(page: Page, icaos: string[]): Promise<void> {
  const fc = (await (await page.request.get('/api/airports')).json()) as {
    features: Array<{ properties: { icao: string; lat: number; lon: number } }>;
  };
  const points = icaos.map((icao) => {
    const f = fc.features.find((x) => x.properties.icao === icao);
    if (!f) throw new Error(`airport ${icao} not found in /api/airports`);
    return [f.properties.lon, f.properties.lat] as [number, number];
  });
  await page.evaluate((pts: [number, number][]) => {
    const m = (window as any).__flightMap;
    if (!m) throw new Error('map not ready');
    const lons = pts.map((p) => p[0]);
    const lats = pts.map((p) => p[1]);
    // duration 0 → instant camera jump, no animation to wait out.
    m.fitBounds(
      [
        [Math.min(...lons), Math.min(...lats)],
        [Math.max(...lons), Math.max(...lats)],
      ],
      { padding: 40, duration: 0 },
    );
  }, points);
  // Give the renderer a beat after the camera jump before asserting on rendered features.
  await page.waitForTimeout(300);
}

// [lon, lat] of an airport from the same /api/airports dataset the map draws its traces from.
async function airportLonLat(page: Page, icao: string): Promise<[number, number]> {
  const fc = (await (await page.request.get('/api/airports')).json()) as {
    features: Array<{ properties: { icao: string; lat: number; lon: number } }>;
  };
  const f = fc.features.find((x) => x.properties.icao === icao);
  if (!f) throw new Error(`airport ${icao} not found in /api/airports`);
  return [f.properties.lon, f.properties.lat];
}

// ISS-022/025/027: the hover-route layer must hold the great-circle trace from origin to dest.
// MapLibre stores GeoJSON geometry in per-tile INTEGER grids and clips long lines across tiles, so
// queryRenderedFeatures returns ONE FEATURE PER TILE the line crosses (the 1420 km EDDF→LEMD leg is
// 4 segments at z=4 / 5 at z=5) with coordinates quantized to the rendered zoom's grid — up to ~half
// a grid step off (~0.001° observed at z≥4, ~0.02° worst case at z=0). A strict single-feature +
// exact-coords comparison can therefore never match even when the line is drawn correctly (CI run #69:
// all three hover-route timeouts while the trace was visibly rendered), so we accept any number of
// segments and require some segment to START within EPS of `from` and some to END within EPS of `to`.
// The true endpoints survive clipping verbatim in whichever tile contains them. (CI runs #69–#71:
// features could arrive WITHOUT a usable geometry because Playwright's evaluate serialization drops
// the lazy prototype getter — not MapLibre artifacts; renderedFeatures now maps to plain objects
// in-page.) The helper still filters to real LineString segments and treats "none yet" as keep-polling
// instead of throwing inside the poll callback. Call fitToAirports([from, to]) first — rendered
// features are viewport-scoped.
const HOVER_ROUTE_EPS_DEG = 0.05; // ~5 km: above worst-case quantization at any zoom, below the distance between any two EU airports

async function expectHoverRoute(page: Page, fromIcao: string, toIcao: string): Promise<void> {
  const [from, to] = await Promise.all([airportLonLat(page, fromIcao), airportLonLat(page, toIcao)]);
  const near = (a: [number, number], b: [number, number]) =>
    Math.abs(a[0] - b[0]) <= HOVER_ROUTE_EPS_DEG && Math.abs(a[1] - b[1]) <= HOVER_ROUTE_EPS_DEG;
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['hover-route'])) as Array<{ geometry?: { type: string; coordinates: [number, number][] } }>;
    // Features are plain objects with in-page-evaluated geometry (see renderedFeatures). The filter
    // guards against degenerate/zero-length clipped segments and keeps this poll callback total — a
    // throw inside expect.poll fails the test instantly instead of retrying. "None yet" → keep polling.
    const segs = feats.filter(
      (f): f is { geometry: { type: 'LineString'; coordinates: [number, number][] } } =>
        !!f.geometry && f.geometry.type === 'LineString' && Array.isArray(f.geometry.coordinates) && f.geometry.coordinates.length >= 2,
    );
    if (!segs.length) return false;
    // The line may be clipped into several per-tile segments — check the endpoints across all of them.
    const startsAtFrom = segs.some((f) => near(f.geometry.coordinates[0], from));
    const endsAtTo = segs.some((f) => {
      const c = f.geometry.coordinates;
      return near(c[c.length - 1], to);
    });
    return startsAtFrom && endsAtTo;
  }, { timeout: 15_000, message: `waiting for the hover-route line ${fromIcao} → ${toIcao}` }).toBe(true);
}

test('hovering a fleet row highlights the plane on the map', async ({ page }) => {
  test.setTimeout(300_000); // self-heal can take minutes after an interrupted run
  await flyHomeViaApi(page); // deterministic: the starter sits at EDDF, inside the initial view

  await page.goto('/');
  await waitForAirportCount(page);

  // Fleet rows are <li data-testid={`plane-${p.id}`}> and the server id already carries the "plane-"
  // prefix (run #34: the real testid is plane-plane-starter) — derive it from /api/state, never hardcode.
  const planes = (await getState(page)).planes;
  const starterId = planes.find((p) => p.id.endsWith('starter'))?.id ?? (planes.length === 1 ? planes[0].id : undefined);
  expect(starterId).toBeDefined();
  const row = page.locator(`li[data-testid="plane-${starterId}"]`);
  // The browser's /api/state polls can lag node-side requests right after a fresh page load
  // (useGameState keeps loading=true until the first success → no fleet rows yet), so poll with
  // diagnostics: on timeout the message compares what the NODE side sees vs what the BROWSER
  // last polled, plus the fleet section's HTML — distinguishing server divergence from a render
  // bug. (The value is returned, not thrown — expect.poll fails immediately on a callback throw
  // instead of retrying.)
  await expect
    .poll(async () => {
      if ((await row.count()) > 0 && (await row.isVisible())) return 'visible';
      const body = await getState(page);
      const browserSnap = await page.evaluate(() => (window as any).__flightLastSnapshot ?? null);
      const fleetHtml = await page.evaluate(() => {
        const el = document.querySelector('[data-testid="fleet-list"]');
        if (el) return `fleet-list HTML: ${(el.outerHTML ?? '').slice(0, 300)}`;
        const pane = document.querySelector<HTMLElement>('[data-testid="left-pane"]');
        return `no fleet-list — left-pane text: ${(pane?.innerText ?? '').slice(0, 200)}`;
      });
      return (
        `not visible — node /api/state planes=[${body.planes.map((p) => p.id).join(', ')}] cash=${body.account.cash}; ` +
        `browser __flightLastSnapshot=${JSON.stringify(browserSnap)}; ${fleetHtml}`
      );
    }, { timeout: 30_000 })
    .toBe('visible');

  // No highlight before hovering (the layers start filtered to match nothing).
  expect(await renderedFeatures(page, ['planes-highlight'])).toHaveLength(0);

  await row.hover();
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['planes-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return feats.length > 0 && feats[0].properties.id === starterId;
  }, { timeout: 15_000, message: `waiting for the planes-highlight layer to show ${starterId}` }).toBe(true);

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['planes-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the highlight to clear after mouseleave',
  }).toBe(0);
});

test('hovering an open package highlights its endpoint airports', async ({ page }) => {
  test.setTimeout(300_000); // self-heal can take minutes after an interrupted run
  await flyHomeViaApi(page);

  const pkg = await createPackage(page, HUB, DEST);

  await page.goto('/');
  await waitForAirportCount(page);

  const row = page.locator(`li[data-testid="open-package-${pkg.id}"]`);
  await expect(row, 'the hook-created package appears in the list').toBeVisible({ timeout: 15_000 });

  // Both endpoints must be in-viewport for queryRenderedFeatures to see them (LEMD is off-screen
  // at the default Frankfurt-centered view).
  await fitToAirports(page, [HUB, DEST]);

  expect(await renderedFeatures(page, ['airports-highlight'])).toHaveLength(0);
  expect(await renderedFeatures(page, ['airports-target-highlight'])).toHaveLength(0);

  await row.hover();
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['airports-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return JSON.stringify(feats.map((f) => f.properties.icao).sort());
  }, { timeout: 15_000, message: 'waiting for the airports-highlight layer to show both endpoints' })
    .toBe(JSON.stringify([HUB, DEST].sort()));

  // ISS-022 (v0.22.0): the ENTIRE trace is drawn too — a great-circle line from origin to dest,
  // not just the endpoint rings.
  await expectHoverRoute(page, HUB, DEST);

  // And the TARGET airport gets its own distinct-colored ring — only the destination, never the origin.
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['airports-target-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return JSON.stringify(feats.map((f) => f.properties.icao).sort());
  }, { timeout: 15_000, message: 'waiting for the airports-target-highlight layer to ring only the destination' })
    .toBe(JSON.stringify([DEST]));

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['airports-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the highlight to clear after mouseleave',
  }).toBe(0);
  await expect.poll(async () => (await renderedFeatures(page, ['hover-route'])).length, {
    timeout: 15_000,
    message: 'waiting for the hover route trace to clear after mouseleave',
  }).toBe(0);
  await expect.poll(async () => (await renderedFeatures(page, ['airports-target-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the target ring to clear after mouseleave',
  }).toBe(0);
});

test('hovering an on-board cargo row draws its trace and keeps the plane halo', async ({ page }) => {
  test.setTimeout(300_000); // self-heal can take minutes after an interrupted run
  await flyHomeViaApi(page); // deterministic: the starter sits grounded at EDDF

  // Load a package onto the grounded starter so it shows up in the On board section.
  const pkg = await createPackage(page, HUB, DEST);
  const load = await page.request.post(`/api/packages/${pkg.id}/load`, { data: { planeId: 'plane-starter' } });
  expect(load.status()).toBe(200);

  await page.goto('/');
  await waitForAirportCount(page);

  const row = page.locator(`[data-testid="onboard-package-${pkg.id}"]`);
  await expect(row, 'the loaded package appears in the On board section').toBeVisible({ timeout: 15_000 });

  // Both endpoints must be in-viewport for queryRenderedFeatures to see the trace.
  await fitToAirports(page, [HUB, DEST]);

  await row.hover();
  // ISS-025 (v0.22.0): same full origin→dest trace as job-list rows…
  await expectHoverRoute(page, HUB, DEST);
  // …and the package's plane keeps its halo lit (the hover carries planeId).
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['planes-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return feats.length > 0 && feats[0].properties.id === 'plane-starter';
  }, { timeout: 15_000, message: 'waiting for the planes-highlight layer to show plane-starter' }).toBe(true);

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['hover-route'])).length, {
    timeout: 15_000,
    message: 'waiting for the hover route trace to clear after mouseleave',
  }).toBe(0);
  await expect.poll(async () => (await renderedFeatures(page, ['planes-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the highlight to clear after mouseleave',
  }).toBe(0);

  // Leave the instance clean: abandon the loaded package so later specs start with an empty starter.
  const res = await page.request.post(`/api/packages/${pkg.id}/abandon`);
  expect(res.status()).toBe(200);
});

test('hovering the Relocate section previews the planned route and target airport', async ({ page }) => {
  test.setTimeout(300_000); // self-heal can take minutes after an interrupted run
  await flyHomeViaApi(page); // deterministic: the starter sits grounded at EDDF

  await page.goto('/');
  await waitForAirportCount(page);

  const section = page.getByTestId('relocate-section');
  await expect(section, 'the Relocate section is visible').toBeVisible({ timeout: 15_000 });

  // LeftPane fetches /api/airports on its own (separate from the map header count) — wait for
  // the destination options to populate before selecting.
  await expect(page.getByTestId('relocate-dest').locator(`option[value="${DEST}"]`)).toHaveCount(1, { timeout: 15_000 });

  // Pick the starter + a known destination explicitly (the effective-selection defaults already do this).
  await page.getByTestId('relocate-plane').selectOption('plane-starter');
  await page.getByTestId('relocate-dest').selectOption(DEST);

  // Both endpoints must be in-viewport for queryRenderedFeatures to see the trace.
  await fitToAirports(page, [HUB, DEST]);

  expect(await renderedFeatures(page, ['hover-route'])).toHaveLength(0);
  expect(await renderedFeatures(page, ['airports-highlight'])).toHaveLength(0);
  expect(await renderedFeatures(page, ['airports-target-highlight'])).toHaveLength(0);

  // ISS-027 (v0.22.0): hovering the panel with a plane + destination selected previews the flight —
  // dashed trace from the plane's airport to the destination…
  await section.hover();
  await expectHoverRoute(page, HUB, DEST);
  // …and rings ONLY the target airport (the origin stays unmarked).
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['airports-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return JSON.stringify(feats.map((f) => f.properties.icao).sort());
  }, { timeout: 15_000, message: 'waiting for the airports-highlight layer to ring only the target' })
    .toBe(JSON.stringify([DEST]));
  // …plus the destination's own distinct-colored ring (ISS-022) — same single icao.
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['airports-target-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return JSON.stringify(feats.map((f) => f.properties.icao).sort());
  }, { timeout: 15_000, message: 'waiting for the airports-target-highlight layer to ring only the target' })
    .toBe(JSON.stringify([DEST]));

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['hover-route'])).length, {
    timeout: 15_000,
    message: 'waiting for the hover route trace to clear after mouseleave',
  }).toBe(0);
  await expect.poll(async () => (await renderedFeatures(page, ['airports-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the highlight to clear after mouseleave',
  }).toBe(0);
  await expect.poll(async () => (await renderedFeatures(page, ['airports-target-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the target ring to clear after mouseleave',
  }).toBe(0);
});

test('hovering an on-board block of a flying plane highlights its route', async ({ page }) => {
  test.setTimeout(600_000); // self-heal + one flight at scale 1000 + fly-home cleanup
  await flyHomeViaApi(page);

  // Full tank before departure — the EDDF↔LEMD round trip burns ~4970 L of the 6300 L tank.
  const refuel = await page.request.post('/api/planes/plane-starter/refuel');
  expect(refuel.status()).toBe(200);

  await page.goto('/');
  await waitForAirportCount(page);

  // Load + fly via the API (same pattern as e2e/map-interactions.spec.ts), then speed up.
  const pkg = await createPackage(page, HUB, DEST);
  const load = await page.request.post(`/api/packages/${pkg.id}/load`, { data: { planeId: 'plane-starter' } });
  expect(load.status()).toBe(200);
  const fly = await page.request.post('/api/planes/plane-starter/fly', { data: { destIcao: DEST } });
  expect(fly.status()).toBe(200);
  await setScale(page, SCALE);

  // The on-board block shows the plane in flight once a snapshot with status 'flying' lands.
  const block = page.getByTestId('onboard-plane-starter');
  await expect(block).toContainText(/in flight/i, { timeout: 15_000 });

  // Freeze mid-flight so the ~10 s leg can't land under us while we assert (same pattern as
  // e2e/map-interactions.spec.ts' marker click): the route line stays drawn while paused.
  await postSim(page, { paused: true });

  await block.hover();
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['routes-highlight'])) as Array<{ properties: Record<string, unknown> }>;
    return feats.length > 0 && feats[0].properties.planeId === 'plane-starter';
  }, { timeout: 15_000, message: 'waiting for the routes-highlight layer to show the plane-starter leg' }).toBe(true);

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['routes-highlight'])).length, {
    timeout: 15_000,
    message: 'waiting for the highlight to clear after mouseleave',
  }).toBe(0);

  // Resume and fast-forward to arrival, then fly home so the live instance stays in its
  // onboarding state (starter grounded at EDDF) for the other specs.
  await postSim(page, { timeScale: SCALE, paused: false });
  await expect
    .poll(async () => {
      const p = (await getState(page)).planes.find((x) => x.id === 'plane-starter');
      return !!p && p.status === 'available' && p.locationIcao === DEST;
    }, { timeout: 120_000, message: `waiting for plane-starter to land at ${DEST}` })
    .toBe(true);

  // ISS-041: the arrival above paused the sim, so re-set SCALE for this leg (setScale clears pause).
  await setScale(page, SCALE);
  const home = await page.request.post('/api/planes/plane-starter/fly', { data: { destIcao: HUB } });
  expect(home.status()).toBe(200);
  await expect
    .poll(async () => (await getState(page)).planes.find((p) => p.id === 'plane-starter')?.locationIcao === HUB, {
      timeout: 120_000,
      message: 'waiting for plane-starter to land back at the hub',
    })
    .toBe(true);
});

test('hovering an on-board package while its carrier is mid-flight traces from current position', async ({ page }) => {
  test.setTimeout(600_000); // self-heal + one flight at scale 1000 + fly-home cleanup
  await flyHomeViaApi(page);

  // Full tank before departure — the EDDF↔LEMD round trip burns ~4970 L of the 6300 L tank.
  const refuel = await page.request.post('/api/planes/plane-starter/refuel');
  expect(refuel.status()).toBe(200);

  await page.goto('/');
  await waitForAirportCount(page);

  // Load + fly via the API (same pattern as e2e/map-interactions.spec.ts), then speed up.
  const pkg = await createPackage(page, HUB, DEST);
  const load = await page.request.post(`/api/packages/${pkg.id}/load`, { data: { planeId: 'plane-starter' } });
  expect(load.status()).toBe(200);
  const fly = await page.request.post('/api/planes/plane-starter/fly', { data: { destIcao: DEST } });
  expect(fly.status()).toBe(200);
  await setScale(page, SCALE);

  // Wait until the starter is GENUINELY mid-flight — its live position clearly away from EDDF in
  // both axes (well past HOVER_ROUTE_EPS_DEG) so "the trace starts at the plane" and "it starts at
  // the pickup airport" are distinguishable. The ~10 s leg at scale 1000 gives a wide window.
  const hubLonLat = await airportLonLat(page, HUB);
  await expect
    .poll(async () => {
      const p = (await getState(page)).planes.find((x) => x.id === 'plane-starter');
      if (!p || p.status !== 'flying') return false;
      return Math.abs(p.lon - hubLonLat[0]) > 0.2 && Math.abs(p.lat - hubLonLat[1]) > 0.2;
    }, { timeout: 60_000, message: 'waiting for plane-starter to be clearly away from the hub' })
    .toBe(true);

  // Freeze mid-flight so the position is stable while we assert (same pause pattern as the
  // flying-plane hover test above): paused, every /api/state snapshot reports the same lat/lon.
  await postSim(page, { paused: true });

  const row = page.locator(`[data-testid="onboard-package-${pkg.id}"]`);
  await expect(row, 'the loaded package appears in the On board section').toBeVisible({ timeout: 15_000 });

  // Both endpoints must be in-viewport for queryRenderedFeatures to see the trace.
  await fitToAirports(page, [HUB, DEST]);

  const live = (await getState(page)).planes.find((x) => x.id === 'plane-starter')!;
  const liveLonLat: [number, number] = [live.lon, live.lat]; // stable — the sim is paused
  const destLonLat = await airportLonLat(page, DEST);

  await row.hover();
  // ISS-040 (v0.23.2): the trace starts at the carrier's LIVE position and ends at the destination,
  // and NO segment may start near the pickup airport (the old origin-based behavior). Same per-tile
  // clipping/quantization caveats as expectHoverRoute — check endpoints across all segments with EPS.
  await expect.poll(async () => {
    const feats = (await renderedFeatures(page, ['hover-route'])) as Array<{ geometry?: { type: string; coordinates: [number, number][] } }>;
    const segs = feats.filter(
      (f): f is { geometry: { type: 'LineString'; coordinates: [number, number][] } } =>
        !!f.geometry && f.geometry.type === 'LineString' && Array.isArray(f.geometry.coordinates) && f.geometry.coordinates.length >= 2,
    );
    if (!segs.length) return false;
    const near = (a: [number, number], b: [number, number]) =>
      Math.abs(a[0] - b[0]) <= HOVER_ROUTE_EPS_DEG && Math.abs(a[1] - b[1]) <= HOVER_ROUTE_EPS_DEG;
    const startsAtLive = segs.some((f) => near(f.geometry.coordinates[0], liveLonLat));
    const endsAtDest = segs.some((f) => near(f.geometry.coordinates[f.geometry.coordinates.length - 1], destLonLat));
    const noneStartsAtHub = !segs.some((f) => near(f.geometry.coordinates[0], hubLonLat));
    return startsAtLive && endsAtDest && noneStartsAtHub;
  }, { timeout: 15_000, message: 'waiting for the hover-route trace to run from the live position to the destination' }).toBe(true);

  await unhover(page);
  await expect.poll(async () => (await renderedFeatures(page, ['hover-route'])).length, {
    timeout: 15_000,
    message: 'waiting for the hover route trace to clear after mouseleave',
  }).toBe(0);

  // Resume and fast-forward to arrival — landing at DEST auto-delivers the package (v0.12.0), so
  // flying home afterwards leaves the starter clean for the other specs.
  await postSim(page, { timeScale: SCALE, paused: false });
  await expect
    .poll(async () => {
      const p = (await getState(page)).planes.find((x) => x.id === 'plane-starter');
      return !!p && p.status === 'available' && p.locationIcao === DEST;
    }, { timeout: 120_000, message: `waiting for plane-starter to land at ${DEST}` })
    .toBe(true);

  // ISS-041: the arrival above paused the sim, so re-set SCALE for this leg (setScale clears pause).
  await setScale(page, SCALE);
  const home = await page.request.post('/api/planes/plane-starter/fly', { data: { destIcao: HUB } });
  expect(home.status()).toBe(200);
  await expect
    .poll(async () => (await getState(page)).planes.find((p) => p.id === 'plane-starter')?.locationIcao === HUB, {
      timeout: 120_000,
      message: 'waiting for plane-starter to land back at the hub',
    })
    .toBe(true);
});