import { expect, test } from './fixtures';

// The install CTA (components/InstallApp.svelte) is platform-adaptive: a one-tap button where the
// browser offers a beforeinstallprompt (Chromium), a manual instructions modal on iOS Safari, and
// nothing elsewhere / once installed / inside a Mini App. The native OS install dialog is
// browser-level and not drivable from Playwright, so these assert the CTA's presence and branch.

const IPHONE_SAFARI =
  'Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1';

test('web: a captured install prompt shows the one-tap CTA and clicking it prompts', async ({ page }) => {
  await page.goto('/');
  // The web login screen is shown (an ordinary browser tab, not a Mini App).
  await expect(page.getByRole('button', { name: /guest/i })).toBeVisible();

  // Hidden until the browser offers installation (Playwright never fires beforeinstallprompt).
  await expect(page.getByRole('button', { name: /Install the app/i })).toHaveCount(0);

  // Simulate Chromium offering the install: dispatch a beforeinstallprompt the app can capture.
  await page.evaluate(() => {
    const e = new Event('beforeinstallprompt') as Event & {
      prompt?: () => Promise<void>;
      userChoice?: Promise<unknown>;
    };
    (window as unknown as { __promptCalled: boolean }).__promptCalled = false;
    e.prompt = () => {
      (window as unknown as { __promptCalled: boolean }).__promptCalled = true;
      return Promise.resolve();
    };
    e.userChoice = Promise.resolve({ outcome: 'accepted', platform: '' });
    window.dispatchEvent(e);
  });

  const cta = page.getByRole('button', { name: /Install the app/i });
  await expect(cta).toBeVisible();
  await cta.click();
  // Clicking calls the captured prompt (the native dialog itself is not observable here).
  await expect
    .poll(() => page.evaluate(() => (window as unknown as { __promptCalled: boolean }).__promptCalled))
    .toBe(true);
});

test.describe('iOS Safari', () => {
  test.use({ userAgent: IPHONE_SAFARI });

  test('shows manual Add-to-Home-Screen instructions (no programmatic install)', async ({ page }) => {
    await page.goto('/');
    await expect(page.getByRole('button', { name: /guest/i })).toBeVisible();

    // On iOS Safari the CTA shows at once (no beforeinstallprompt is ever fired there).
    const cta = page.getByRole('button', { name: /Install the app/i });
    await expect(cta).toBeVisible();
    await cta.click();

    // It opens the app's own instructions modal (not a native / Telegram popup).
    await expect(page.getByRole('heading', { name: 'Add to Home Screen' })).toBeVisible();
    await expect(page.getByText(/Tap the Share button/)).toBeVisible();
  });
});