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

/**
 * Fully deterministic end-to-end test. The Playwright webServer boots the real
 * stack (Vite → Express) with LLM_STUB=1, so the backend uses the deterministic
 * turn simulator in server/stub.ts.
 *
 * Batched-round model: actions and diplomatic messages are queued in
 * `game.pending` (no turn advance, no LLM call); a single "Jump forward"
 * commits the whole batch in one LLM turn. The stub emits one event per
 * queued item (action → military/success, diplomacy → diplomatic/partial) or
 * one political "The world moves on" event when the round is empty. It always
 * sets the player's military to (current + 5, clamped) and allies the player
 * with the first other nation, advancing the date by 2 days.
 */
test.describe('History — deterministic simulation (LLM_STUB=1)', () => {
  test('scenario → nation → queue action + diplomacy → jump, with predicted stat changes', async ({ page }) => {
    test.setTimeout(120000);
    await page.goto('/');

    // Home: the scenario grid loads with all 5 presets.
    const presetCards = page.getByTestId('preset-card');
    await expect(presetCards.first()).toBeVisible();
    await expect(presetCards).toHaveCount(5);

    // Start the first scenario (World War II, 1939).
    await presetCards.first().getByRole('button', { name: 'Play' }).click();

    // Nation select: the world brief is shown, then we lead the United Kingdom.
    await expect(page.getByTestId('world-background')).toBeVisible();
    await page
      .getByTestId('nation-card-uk')
      .getByRole('button', { name: 'Play as United Kingdom' })
      .click();

    // Game screen mounts: map, command deck, and event feed all present; turn 1.
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('action-panel')).toBeVisible();
    await expect(page.getByTestId('event-feed-panel')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    // The dossier shows the player's four stat bars (value-colored, animated).
    await expect(page.getByTestId('stat-military')).toBeVisible();
    await expect(page.getByTestId('stat-economy')).toBeVisible();
    await expect(page.getByTestId('stat-stability')).toBeVisible();
    await expect(page.getByTestId('stat-population')).toBeVisible();

    // The player (UK) starts at military 80, date 1939-09-01, no events yet.
    const military = page.getByTestId('stat-military');
    const date = page.getByTestId('game-date');
    await expect(military).toHaveText('80');
    await expect(date).toHaveText('1939-09-01');
    await expect(page.getByTestId('event-item')).toHaveCount(0);

    // The map legend is auto-generated from the region map: all 7 nations of the
    // scenario own at least one region, including the player (United Kingdom).
    await expect(page.getByTestId('map-legend-item')).toHaveCount(7, { timeout: 15000 });
    await expect(page.getByTestId('map-legend-item').filter({ hasText: 'United Kingdom' })).toBeVisible();

    // --- Queue an action (no turn advance, no LLM call) ---
    await page.getByTestId('action-textarea').fill('Mobilize the home guard and fortify Dover');
    await page.getByTestId('add-action').click();

    // The pending list shows one queued action; turn and date are unchanged.
    await expect(page.getByTestId('pending-item')).toHaveCount(1);
    await expect(page.getByTestId('pending-item').first()).toHaveAttribute('data-kind', 'action');
    await expect(page.getByTestId('pending-item').first()).toContainText('Mobilize the home guard and fortify Dover');
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(date).toHaveText('1939-09-01');
    await expect(page.getByTestId('event-item')).toHaveCount(0);
    // The "Your move" window's title badge shows the pending count.
    await expect(page.getByTestId('title-queued')).toHaveText('1 queued');

    // --- Queue a diplomatic message (no turn advance, no LLM call) ---
    await page.getByTestId('tab-diplo').click();
    await page.getByTestId('chat-target').click();
    await page.getByRole('option', { name: 'United States' }).click();
    await page.getByTestId('chat-message').fill('We propose a mutual defense pact');
    await page.getByTestId('add-diplomacy').click();

    // The pending list now shows two items (action + diplomacy); turn still 1.
    await expect(page.getByTestId('pending-item')).toHaveCount(2);
    await expect(page.getByTestId('pending-item').first()).toHaveAttribute('data-kind', 'action');
    await expect(page.getByTestId('pending-item').nth(1)).toHaveAttribute('data-kind', 'diplomacy');
    await expect(page.getByTestId('pending-item').nth(1)).toContainText('→ United States');
    await expect(page.getByTestId('pending-item').nth(1)).toContainText('We propose a mutual defense pact');
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(date).toHaveText('1939-09-01');
    await expect(page.getByTestId('event-item')).toHaveCount(0);
    await expect(page.getByTestId('title-queued')).toHaveText('2 queued');

    // --- Jump forward: commit the whole pending round in a single LLM turn ---
    // The button sits at the bottom of the scrollable "Your move" window body
    // (max-h-[72vh] overflow-y-auto) and may be outside the page viewport; a
    // native DOM click bypasses Playwright's viewport actionability check.
    await page
      .getByTestId('jump-forward')
      .evaluate((el) => (el as HTMLElement).click());

    // Turn advances to 2, date to 1939-09-03 (+2 days), military 80 → 85.
    await expect(page.getByTestId('turn-count')).toHaveText('2', { timeout: 20000 });
    await expect(military).toHaveText('85', { timeout: 20000 });
    await expect(date).toHaveText('1939-09-03', { timeout: 20000 });

    // Two events were emitted (one per queued item): one military, one diplomatic.
    await expect(page.getByTestId('event-item')).toHaveCount(2);

    // The pending queue is now empty — the round was committed and cleared.
    await expect(page.getByTestId('pending-empty')).toBeVisible();
    await expect(page.getByTestId('title-queued')).not.toBeVisible();

    // Newest first: the diplomatic event (2nd queued item) sits on top, the
    // military event (1st queued item) is second.
    await expect(page.getByTestId('event-item').first().getByTestId('event-type')).toHaveText('diplomatic');
    await expect(page.getByTestId('event-item').first().getByTestId('event-outcome')).toHaveText('partial');
    await expect(page.getByTestId('event-item').nth(1).getByTestId('event-type')).toHaveText('military');
    await expect(page.getByTestId('event-item').nth(1).getByTestId('event-outcome')).toHaveText('success');
  });
});

/**
 * Save / resume across a page refresh. The active game's id is persisted in
 * localStorage, so a reload (or the home screen's "Resume last game" button)
 * must drop the user straight back into the same game — same turn, same stats,
 * same map — rather than resetting to the home screen. Deterministic under the
 * stub (UK military starts at 80 and +5 per committed turn).
 */
test.describe('History — save / resume across a page refresh', () => {
  async function createUkGameAtTurn2(page: Page): Promise<void> {
    await page.goto('/');
    await page.getByTestId('preset-card').first().waitFor({ timeout: 15000 });
    await page.getByTestId('preset-card').first().getByRole('button', { name: 'Play' }).click();
    await page
      .getByTestId('nation-card-uk')
      .getByRole('button', { name: 'Play as United Kingdom' })
      .click();

    // Game screen mounts at turn 1 (UK military starts at 80).
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('stat-military')).toHaveText('80');

    // Queue one action onto the pending round, then jump forward: the stub
    // bumps UK military to 85 and advances to turn 2.
    await page.getByTestId('action-textarea').fill('Reinforce the Atlantic convoys');
    await page.getByTestId('add-action').click();
    await expect(page.getByTestId('pending-item')).toHaveCount(1);
    await page.getByTestId('jump-forward').click();
    await expect(page.getByTestId('turn-count')).toHaveText('2', { timeout: 20000 });
    await expect(page.getByTestId('stat-military')).toHaveText('85', { timeout: 20000 });
  }

  test('auto-resumes into the same game after a page reload', async ({ page }) => {
    await createUkGameAtTurn2(page);

    // Reload: the persisted active game id must restore the game — not home.
    await page.reload();

    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('2', { timeout: 20000 });
    await expect(page.getByTestId('stat-military')).toHaveText('85', { timeout: 20000 });
    // The player's identity is restored in the header…
    await expect(page.getByTestId('player-nation')).toHaveText('United Kingdom');
    // …and the map legend is regenerated from the persisted region map.
    await expect(page.getByTestId('map-legend-item').first()).toBeVisible({ timeout: 15000 });
  });

  test('explicitly resumes a saved game from the home screen', async ({ page }) => {
    await createUkGameAtTurn2(page);

    // Back to the home screen: the "Resume last game" affordance is present.
    await page.getByTestId('back-to-scenarios').click();
    await expect(page.getByTestId('resume-last')).toBeVisible();

    // Resuming drops back into the same game, at the saved turn.
    await page.getByTestId('resume-last').click();
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('2', { timeout: 20000 });
    await expect(page.getByTestId('stat-military')).toHaveText('85', { timeout: 20000 });
    await expect(page.getByTestId('player-nation')).toHaveText('United Kingdom');
  });
});

/**
 * Queue reliability — issue #10. A queued item must appear in the pending list
 * right after its REST response AND stay there: before the fix, a stale SSE
 * `state` snapshot (the on-connect resync taken just before the add was saved,
 * carrying no freshness marker) could arrive after the REST response and
 * clobber it — "add one: nothing happens, add another: both appear". The fix
 * gives every mutation a monotonic `GameState.version` and the client applies
 * an incoming state only when it is not older than the current one.
 */
test.describe('History — queue add is never clobbered by a stale SSE snapshot (#10)', () => {
  test('one added action appears immediately and survives late SSE snapshots', async ({
    page,
  }) => {
    test.setTimeout(90000);
    const id = await createUkGame(page);
    const origin = await page.evaluate(() => location.origin);

    // Game screen at turn 1, nothing queued yet.
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('game-date')).toHaveText('1939-09-01');
    await expect(page.getByTestId('pending-empty')).toBeVisible();

    // Queue exactly ONE action and assert it appears immediately (turn/date
    // unchanged, no events yet).
    await page.getByTestId('action-textarea').fill('Hold the line at the channel');
    const [addResp] = await Promise.all([
      page.waitForResponse(
        (r) => r.request().method() === 'POST' && new URL(r.url()).pathname === `/api/games/${id}/action`,
      ),
      page.getByTestId('add-action').click(),
    ]);
    const addBody = (await addResp.json()) as { game: { version: number; pending: unknown[] } };
    expect(addBody.game.pending).toHaveLength(1);

    await expect(page.getByTestId('pending-item')).toHaveCount(1);
    await expect(page.getByTestId('pending-item').first()).toHaveAttribute('data-kind', 'action');
    await expect(page.getByTestId('pending-item').first()).toContainText('Hold the line at the channel');
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('game-date')).toHaveText('1939-09-01');
    await expect(page.getByTestId('event-item')).toHaveCount(0);
    await expect(page.getByTestId('title-queued')).toHaveText('1 queued');

    // Let any in-flight / late SSE snapshot (on-connect resync, auto-reconnect)
    // have its chance to arrive. Under the stub these settle in milliseconds;
    // a second is generous. Before the version fix, a stale one could clobber
    // the just-added item here.
    await page.waitForTimeout(1000);

    // The item is still there — the stale snapshot was dropped, not applied.
    await expect(page.getByTestId('pending-item')).toHaveCount(1);
    await expect(page.getByTestId('pending-item').first()).toContainText('Hold the line at the channel');
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    // Protocol-level check: a later mutation (a second queued item) must carry
    // a strictly higher version than the one we just saw.
    await page.getByTestId('action-textarea').fill('Scramble the night fighters');
    const [add2Resp] = await Promise.all([
      page.waitForResponse(
        (r) => r.request().method() === 'POST' && new URL(r.url()).pathname === `/api/games/${id}/action`,
      ),
      page.getByTestId('add-action').click(),
    ]);
    const add2Body = (await add2Resp.json()) as { game: { version: number } };
    expect(add2Body.game.version).toBeGreaterThan(addBody.game.version);
    await expect(page.getByTestId('pending-item')).toHaveCount(2);

    // The game persisted with a version survives a full page reload.
    await page.goto(`${origin}/#/game/${id}`);
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('pending-item')).toHaveCount(2, { timeout: 15000 });
  });
});

/**
 * Per-item removal — issue #11. Each queued row has a small trash button that
 * opens a confirmation dialog; confirming removes the item server-side
 * (POST /api/games/:id/queue/remove, no turn advance) and cancelling keeps it.
 */
test.describe('History — remove a queued item with confirmation (#11)', () => {
  test('cancel keeps the item; confirm removes it', async ({ page }) => {
    test.setTimeout(90000);
    const id = await createUkGame(page);

    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    // Queue one action.
    await page.getByTestId('action-textarea').fill('Open the back channel with Vichy');
    await page.getByTestId('add-action').click();
    await expect(page.getByTestId('pending-item')).toHaveCount(1);

    // Trash icon → confirmation dialog.
    await page.getByTestId('remove-queue-item').click();
    const dialog = page.getByTestId('remove-confirm-dialog');
    await expect(dialog).toBeVisible();
    await expect(dialog).toContainText('Open the back channel with Vichy');

    // Cancel: the item stays queued.
    await page.getByTestId('remove-cancel').click();
    await expect(dialog).not.toBeVisible();
    await expect(page.getByTestId('pending-item')).toHaveCount(1);
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    // Open again and confirm: the item is removed server-side.
    await page.getByTestId('remove-queue-item').click();
    await expect(dialog).toBeVisible();
    const [removeResp] = await Promise.all([
      page.waitForResponse(
        (r) =>
          r.request().method() === 'POST' &&
          new URL(r.url()).pathname === `/api/games/${id}/queue/remove`,
      ),
      page.getByTestId('remove-confirm').click(),
    ]);
    const removeBody = (await removeResp.json()) as { game: { version: number; pending: unknown[] } };
    expect(removeBody.game.pending).toHaveLength(0);

    await expect(dialog).not.toBeVisible();
    await expect(page.getByTestId('pending-empty')).toBeVisible();
    await expect(page.getByTestId('title-queued')).not.toBeVisible();
    // Still turn 1, no events — removing never advances the round.
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('game-date')).toHaveText('1939-09-01');
    await expect(page.getByTestId('event-item')).toHaveCount(0);

    // The bumped version is persisted with the game (it survives a reload).
    const after = await page.evaluate(
      async (gameId) =>
        ((await fetch(`/api/games/${gameId}`)).json()) as Promise<{ game: { version: number } }>,
      id,
    );
    expect(after.game.version).toBe(removeBody.game.version);
  });
});

/**
 * URL deep-linking (issue #3). The active game's id lives in the URL fragment:
 * home is `#/` and an active game is `#/game/<id>`. A fresh page navigated to
 * that hash loads that exact game; a bad/missing id falls back to home and
 * clears the hash; returning to home clears it. A browser context is fresh per
 * test, so localStorage is isolated, but the e2e webServer shares one SQLite
 * (`data/e2e`) across tests — so each test captures the *specific* id of the
 * game it creates (via the POST /api/games response) rather than assuming "the
 * only game".
 */

/**
 * Start the first scenario (World War II) and pick the United Kingdom, returning
 * the freshly created game's id (read from the POST /api/games response). Leaves
 * the caller on the game screen at turn 1.
 */
async function createUkGame(page: Page): Promise<string> {
  await page.goto('/');
  await page.getByTestId('preset-card').first().waitFor({ timeout: 15000 });
  await page.getByTestId('preset-card').first().getByRole('button', { name: 'Play' }).click();
  await expect(page.getByTestId('world-background')).toBeVisible();
  const [resp] = await Promise.all([
    page.waitForResponse(
      (r) => r.request().method() === 'POST' && new URL(r.url()).pathname === '/api/games',
    ),
    page
      .getByTestId('nation-card-uk')
      .getByRole('button', { name: 'Play as United Kingdom' })
      .click(),
  ]);
  const body = (await resp.json()) as { game: { id: string } };
  return body.game.id;
}

/** Poll until `location.hash` equals `expected` (hash writes happen in effects). */
async function waitHash(page: Page, expected: string): Promise<void> {
  await page.waitForFunction(
    (exp) => window.location.hash === exp,
    expected,
    { timeout: 15000 },
  );
}

test.describe('History — URL deep-linking (#/game/<id>)', () => {
  test('creating a game puts its id in the URL', async ({ page }) => {
    test.setTimeout(60000);
    const id = await createUkGame(page);

    // The game screen mounts at turn 1; the URL-sync effect writes the deep link.
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    await expect(page.getByTestId('player-nation')).toHaveText('United Kingdom');
    await waitHash(page, `#/game/${id}`);
  });

  test('a fresh page deep-links to the exact saved game', async ({ page, context }) => {
    test.setTimeout(60000);
    const id = await createUkGame(page);
    await waitHash(page, `#/game/${id}`);
    const origin = await page.evaluate(() => location.origin);

    // A brand-new page navigated straight to the deep link must load that exact
    // game (matching id, preset, and player) — the URL hash takes precedence over
    // the (shared) localStorage, so this is deterministic.
    const page2 = await context.newPage();
    await page2.goto(`${origin}/#/game/${id}`);
    await expect(page2.getByTestId('world-map')).toBeVisible();
    await expect(page2.getByTestId('turn-count')).toHaveText('1');
    await expect(page2.getByTestId('player-nation')).toHaveText('United Kingdom');
    await waitHash(page2, `#/game/${id}`);
    await page2.close();
  });

  test('a bad game id falls back to the home screen and clears the hash', async ({
    page,
    context,
  }) => {
    test.setTimeout(60000);
    await page.goto('/');
    const origin = await page.evaluate(() => location.origin);

    // A fresh page navigated to a non-existent id must not crash: it lands on the
    // home screen and the bad hash is cleared to `#/`.
    const page2 = await context.newPage();
    await page2.goto(`${origin}/#/game/does-not-exist-xyz`);
    await expect(page2.getByTestId('preset-card').first()).toBeVisible({ timeout: 20000 });
    await waitHash(page2, '#/');
    await page2.close();
  });

  test('returning to home from a game clears the hash to #/', async ({ page }) => {
    test.setTimeout(60000);
    const id = await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();
    await waitHash(page, `#/game/${id}`);

    // "← Scenarios" returns to the home screen; the URL-sync effect clears the hash.
    await page.getByTestId('back-to-scenarios').click();
    await expect(page.getByTestId('preset-card').first()).toBeVisible({ timeout: 15000 });
    await waitHash(page, '#/');
  });
});

/**
 * HUD revamp (issues #4 and #5). The floating "Map" zoom window is gone — the
 * full-bleed map is driven directly by wheel/trackpad + drag. The top bar is a
 * *pinned* element: fixed, non-movable, centered at the top a few px down. The
 * dossier / feed / action panels can each be docked into a full-height left or
 * right pane (persisted in `localStorage`); the legend stays a small floating
 * widget.
 */
test.describe('History — HUD revamp (pinned top bar, dockable panels, no Map window)', () => {
  test('Map window is gone; top bar is pinned top-center; panels dock left/right', async ({
    page,
  }) => {
    test.setTimeout(90000);
    await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    const vw = page.viewportSize()!.width;
    const vh = page.viewportSize()!.height;

    // --- #4: the "Map" zoom window is gone --------------------------------
    // No zoom window element, and no zoom-in/zoom-out buttons anywhere on the
    // game screen.
    await expect(page.locator('[data-float-window="zoom"]')).toHaveCount(0);
    await expect(page.getByTestId('zoom-in')).toHaveCount(0);
    await expect(page.getByTestId('zoom-out')).toHaveCount(0);

    // --- #5a: the top bar is pinned, centered at the top ------------------
    const topBar = page.getByTestId('top-bar');
    await expect(topBar).toBeVisible();
    const barBox = (await topBar.boundingBox())!;
    // Horizontally centered: x ≈ (viewportWidth − width) / 2 …
    expect(Math.abs(barBox.x - (vw - barBox.width) / 2)).toBeLessThanOrEqual(3);
    // …and a few px down from the top edge (y ≈ 8).
    expect(barBox.y).toBeGreaterThanOrEqual(6);
    expect(barBox.y).toBeLessThanOrEqual(10);

    // A pointer-drag attempted on the pinned bar must not move it (it has no
    // drag handlers; the map behind it never receives a mousedown).
    await page.mouse.move(barBox.x + barBox.width / 2, barBox.y + barBox.height / 2);
    await page.mouse.down();
    await page.mouse.move(barBox.x + barBox.width / 2 + 60, barBox.y + barBox.height / 2 + 40, {
      steps: 6,
    });
    await page.mouse.up();
    const barBoxAfter = (await topBar.boundingBox())!;
    expect(Math.abs(barBoxAfter.x - barBox.x)).toBeLessThanOrEqual(1);
    expect(Math.abs(barBoxAfter.y - barBox.y)).toBeLessThanOrEqual(1);

    // --- #5b: the dossier docks into a full-height left pane --------------
    const dossier = page.getByTestId('panel-dossier');
    await dossier.getByTestId('dock-left').click();
    const dBox = (await dossier.boundingBox())!;
    // Pinned to the left edge, filling the viewport height.
    expect(dBox.x).toBeLessThanOrEqual(2);
    expect(dBox.y).toBeLessThanOrEqual(2);
    expect(Math.abs(dBox.height - vh)).toBeLessThanOrEqual(3);
    expect(Math.abs(dBox.width - 300)).toBeLessThanOrEqual(3);

    // --- #5b: the event feed docks into a full-height right pane ----------
    const feed = page.getByTestId('panel-feed');
    await feed.getByTestId('dock-right').click();
    const fBox = (await feed.boundingBox())!;
    // Pinned to the right edge: its right side sits on the viewport edge.
    expect(Math.abs(fBox.x + fBox.width - vw)).toBeLessThanOrEqual(3);
    expect(Math.abs(fBox.height - vh)).toBeLessThanOrEqual(3);

    // The "Your move" deck is still a floating panel (we never docked it).
    await expect(page.getByTestId('panel-action')).toBeVisible();
  });

  test('a dock choice survives a page reload (persisted in localStorage)', async ({
    page,
  }) => {
    test.setTimeout(90000);
    await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();
    const vh = page.viewportSize()!.height;

    // Dock the dossier into the left pane.
    const dossier = page.getByTestId('panel-dossier');
    await dossier.getByTestId('dock-left').click();
    const before = (await dossier.boundingBox())!;
    expect(before.x).toBeLessThanOrEqual(2);
    expect(Math.abs(before.height - vh)).toBeLessThanOrEqual(3);

    // Reload: the persisted dock choice must restore the docked layout, and the
    // deep link restores the game.
    await page.reload();
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1', { timeout: 20000 });
    const after = (await page.getByTestId('panel-dossier').boundingBox())!;
    expect(after.x).toBeLessThanOrEqual(2);
    expect(Math.abs(after.height - vh)).toBeLessThanOrEqual(3);
    expect(Math.abs(after.width - 300)).toBeLessThanOrEqual(3);
  });
});

/**
 * Advisor "thinking" indicator (issue #15). Asking the advisor is a *separate*
 * LLM call with its own `advisorBusy` flag — it must never block the turn flow.
 * Under the deterministic stub the fetch resolves in milliseconds, so the
 * transient thinking state is too short to assert mid-flight reliably. Instead
 * we assert the *terminal* states, which are deterministic: before the fetch the
 * button is enabled and the hint is absent; after it, the advisor list is
 * populated (5 canned ideas), the hint is gone, the button is re-enabled, and
 * the top bar is back to "Idle".
 */
test.describe('History — Advisor thinking indicator (#15)', () => {
  test('asking the advisor populates the list and clears the busy state', async ({ page }) => {
    test.setTimeout(90000);
    await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');

    // Open the Advisor tab.
    await page.getByTestId('tab-advisor').click();

    // Before any fetch: the button is enabled, no thinking hint, no results yet.
    const ask = page.getByTestId('ask-advisor');
    await expect(ask).toBeEnabled();
    await expect(page.getByTestId('advisor-hint')).toHaveCount(0);
    await expect(page.getByTestId('advisor-list')).toHaveCount(0);

    // Ask the advisor (with an optional focus). The stub returns 5 canned ideas.
    await page.getByTestId('advisor-prompt').fill('the nuclear standoff');
    await ask.click();

    // Terminal state: the result populates the advisor list.
    await expect(page.getByTestId('advisor-list')).toBeVisible({ timeout: 20000 });
    await expect(page.getByTestId('advisor-item')).toHaveCount(5, { timeout: 20000 });

    // The fetch finished: the thinking hint is gone and the button is re-enabled.
    await expect(page.getByTestId('advisor-hint')).toHaveCount(0);
    await expect(ask).toBeEnabled();

    // Nothing is in flight now, so the top bar reports idle (not the turn flow).
    await expect(page.getByTestId('status-indicator')).toHaveText(/Idle/);
  });
});

/**
 * Remove a saved game (#20): a saved game can be deleted from the home screen
 * (with a confirmation dialog), and loading a non-existent / deleted game id
 * (directly or via a stale open tab) returns the user to the home screen.
 */
test.describe('History — remove a saved game & redirect (#20)', () => {
  test('deleting a saved game from the home screen removes it (with confirmation)', async ({
    page,
  }) => {
    test.setTimeout(90000);
    const id = await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();

    // Back to the home screen, where the just-created game appears in "Saved games".
    await page.getByTestId('back-to-scenarios').click();
    await expect(page.getByTestId('saved-games')).toBeVisible({ timeout: 15000 });
    const card = page.locator(`[data-game-id="${id}"]`);
    await expect(card).toBeVisible();

    // Opening the confirm dialog…
    await card.getByTestId('delete-game').click();
    const dialog = page.getByTestId('delete-game-confirm-dialog');
    await expect(dialog).toBeVisible();

    // …and cancelling leaves the game in place.
    await page.getByTestId('delete-game-cancel').click();
    await expect(dialog).toHaveCount(0);
    await expect(card).toBeVisible();

    // Confirming the delete removes it: the DELETE succeeds, the card disappears,
    // and a subsequent fetch reports the game gone.
    await card.getByTestId('delete-game').click();
    await expect(page.getByTestId('delete-game-confirm-dialog')).toBeVisible();
    const [resp] = await Promise.all([
      page.waitForResponse(
        (r) =>
          r.request().method() === 'DELETE' &&
          new URL(r.url()).pathname === `/api/games/${id}`,
      ),
      page.getByTestId('delete-game-confirm').click(),
    ]);
    expect((await resp.json()) as { deleted: boolean }).toEqual({ deleted: true });
    await expect(page.getByTestId('delete-game-confirm-dialog')).toHaveCount(0);
    await expect(card).toHaveCount(0);

    // The game is gone from the server too.
    const status = await page.evaluate(async (gid) => {
      const r = await fetch(`/api/games/${gid}`);
      return r.status;
    }, id);
    expect(status).toBe(404);
  });

  test('deleting an open game sends the active tab home; a deep link lands on home', async ({
    page,
    context,
  }) => {
    test.setTimeout(90000);
    const id = await createUkGame(page);
    await expect(page.getByTestId('world-map')).toBeVisible();
    await expect(page.getByTestId('turn-count')).toHaveText('1');
    const origin = await page.evaluate(() => location.origin);

    // Delete the game straight through the API while its tab is open. The server
    // broadcasts an SSE `error` and the client's useSse onError handler returns
    // this live tab to the home screen.
    const delStatus = await page.evaluate(
      async (gid) => (await fetch(`/api/games/${gid}`, { method: 'DELETE' })).status,
      id,
    );
    expect(delStatus).toBe(200);
    await expect(page.getByTestId('preset-card').first()).toBeVisible({ timeout: 20000 });
    await waitHash(page, '#/');

    // A brand-new page deep-linking to the now-deleted id also lands on home.
    const page2 = await context.newPage();
    await page2.goto(`${origin}/#/game/${id}`);
    await expect(page2.getByTestId('preset-card').first()).toBeVisible({ timeout: 20000 });
    await waitHash(page2, '#/');
    await page2.close();
  });
});