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.

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;
}

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.
async function setScale(page: Page, scale: number): Promise<void> {
  const res = await page.request.post('/api/sim', { data: { timeScale: scale } });
  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-011: the landing above auto-slown the sim to 1× — re-set SCALE 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[]) {
  return page.evaluate((ls: string[]) => {
    const m = (window as any).__flightMap;
    if (!m) return [];
    try {
      return m.queryRenderedFeatures(undefined, { layers: ls });
    } 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);
}

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);

  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()));

  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);
});

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-011: the arrival above auto-slown the sim to 1×, so re-set SCALE for this leg.
  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);
});