/**
 * login.spec.ts — Phase 19 AUTH-LOCAL-12/15/16
 *
 * Real-login-form e2e tests covering the PWA login gate + form interaction.
 *
 * Strategy (Option C):
 *   The global-setup seeds 'devuser'/'devpass' into local_credentials and the API's
 *   devSessionCookieMiddleware issues a local-session cookie on every /api/* request
 *   under DEV_AUTH_BYPASS=true. The OTHER specs (layout, calendar, lists) rely on that
 *   cookie being present and do NOT clear it — they still reach the authed app unchanged.
 *
 *   IMPORTANT — bypass constraint: this harness is DEV_AUTH_BYPASS-only (global-setup
 *   refuses a non-bypass DB). Under the bypass, devAuthBypass() injects DEV_USER into
 *   every /api/* request, so /api/me is authed regardless of the local-session cookie —
 *   clearing the cookie does NOT produce a logged-out state in the browser. We therefore
 *   exercise the /login page DIRECTLY (the /login route always renders the form) for the
 *   form + real-login round-trip, and cover the unauthenticated root→/login redirect gate
 *   at the unit level in src/App.test.tsx (where meQuery.isError is controllable).
 *
 * Specs covered:
 *   1. /login renders all brand + form surfaces (real browser, real CSS/tokens)
 *   2. Wrong password → single "Incorrect username or password." error message
 *   3. Correct devuser/devpass → navigates into the app (out of /login)
 *
 * Only runs on the desktop/chromium project (Chromium handles local-session cookies
 * consistently; WebKit PWA restrictions are irrelevant here since the login form is
 * a normal web page, not a Home Screen PWA). Other profiles inherit the bypass cookie.
 *
 * Run:
 *   pnpm --filter @familysync/pwa test:e2e --grep "login"
 *   pnpm --filter @familysync/pwa exec playwright test --project=desktop login.spec.ts
 */
import { test, expect } from '@playwright/test';

// Selectors derived from 19-UI-SPEC.md Surfaces 3-7 (locked by plan 04 implementation)
const SELECTORS = {
  usernameInput: '#login-username',
  // password input has id="login-password" (UI-SPEC Surface 5)
  passwordInput: '#login-password',
  // Primary submit: role=button with name "Sign in" (UI-SPEC Surface 7)
  submitBtn: 'button[type="submit"]',
  // Error message is in a role="status" element (UI-SPEC Surface 6)
  errorMessage: '[role="status"]',
};

// Only run these specs on the desktop profile. The login form is a standard web
// page (not PWA-specific) and Chromium handles cookies most consistently for this test.
// iphone/pixel still reach the authed app via the bypass-issued cookie (unchanged behavior).
test.describe('Login form — real auth round-trip (desktop/Chromium only)', () => {
  test.skip(
    ({ browserName }) => browserName !== 'chromium',
    'Login form tests only run on Chromium (desktop profile) — other profiles use the bypass cookie',
  );

  test('/login renders all brand + form surfaces (UI-SPEC Surfaces 2-7)', async ({ page }) => {
    // Navigate DIRECTLY to /login rather than asserting an unauthenticated root→/login
    // redirect: under the always-on DEV_AUTH_BYPASS, /api/me is authed via DEV_USER
    // injection regardless of the cookie, so visiting / lands on /calendar and a
    // logged-out state is unreachable here. The redirect gate is unit-tested in
    // src/App.test.tsx; this e2e proves /login renders every surface in a real browser.
    await page.goto('/login', { waitUntil: 'domcontentloaded' });

    // Assert we are on the /login route
    await expect(page).toHaveURL(/\/login/);

    // Brand slot: "FamilySync" text should be visible (UI-SPEC Surface 2)
    await expect(page.getByText('FamilySync', { exact: true })).toBeVisible();

    // Login card heading "Sign in" (UI-SPEC Surface 3)
    await expect(page.getByRole('heading', { name: 'Sign in' })).toBeVisible();

    // Username field (UI-SPEC Surface 4)
    await expect(page.locator(SELECTORS.usernameInput)).toBeVisible();

    // Password field (UI-SPEC Surface 5)
    await expect(page.locator(SELECTORS.passwordInput)).toBeVisible();

    // Submit button (UI-SPEC Surface 7)
    await expect(page.getByRole('button', { name: 'Sign in' })).toBeVisible();
  });

  test('wrong password shows single "Incorrect username or password." error', async ({
    page,
    context,
  }) => {
    await context.clearCookies();

    await page.goto('/login', { waitUntil: 'domcontentloaded' });

    // Fill in wrong credentials
    await page.locator(SELECTORS.usernameInput).fill('devuser');
    await page.locator(SELECTORS.passwordInput).fill('wrongpassword');
    await page.getByRole('button', { name: 'Sign in' }).click();

    // Error message appears (UI-SPEC Surface 6 — "Incorrect username or password.")
    const errorEl = page.locator(SELECTORS.errorMessage);
    await expect(errorEl).toBeVisible({ timeout: 5_000 });
    await expect(errorEl).toContainText('Incorrect username or password.');

    // Still on /login
    await expect(page).toHaveURL(/\/login/);
  });

  test('correct devuser/devpass logs in and navigates out of /login', async ({ page, context }) => {
    await context.clearCookies();

    await page.goto('/login', { waitUntil: 'domcontentloaded' });

    // Fill in the seeded dev credentials (global-setup seeds devuser/devpass)
    await page.locator(SELECTORS.usernameInput).fill('devuser');
    await page.locator(SELECTORS.passwordInput).fill('devpass');
    await page.getByRole('button', { name: 'Sign in' }).click();

    // After login, the page navigates away from /login (to / or /calendar)
    await expect(page).not.toHaveURL(/\/login/, { timeout: 10_000 });
  });
});