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

// UAT-3: Browser gate (hard stop) — e2e.
// Spec (CAPTURE.md §Browsers):
//   Phone: iOS Safari, Android Chrome.
//   PC: Chrome, Edge, Firefox.
//   Other clients get a hard stop.
//
// Acceptance: opening in an unsupported browser (e.g. Opera, Samsung
// Internet) shows a hard-stop message, NOT the app.
//
// The app itself must not render (no <slot> content, no "Milestone 1
// — Capture" text) in an unsupported browser; the hard-stop page lists
// the spec browsers instead.

const DESKTOP_CHROME_UA =
  'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36';
const DESKTOP_OPERA_UA =
  'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 OPR/110.0.0.0';
const DESKTOP_EDGE_UA =
  'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36 Edg/124.0.0.0';
const DESKTOP_FIREFOX_UA =
  'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0';
const IOS_SAFARI_UA =
  'Mozilla/5.0 (iPhone; CPU iPhone OS 17_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.4 Mobile/15E148 Safari/605.1.15';
const ANDROID_CHROME_UA =
  'Mozilla/5.0 (Linux; Android 14; Pixel 8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.6331.115 Mobile Safari/537.36';
const SAMSUNG_INTERNET_UA =
  'Mozilla/5.0 (Linux; Android 14; SM-S918B) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/24.0 Chrome/124.0.0.0 Mobile Safari/537.36';

async function openApp(page, ua) {
  await page.setExtraHTTPHeaders({ 'User-Agent': ua });
  await page.goto('/');
  // The gate runs on client hydration; wait a beat for the DOM to
  // settle on whichever branch rendered.
  await page.waitForTimeout(300);
}

// The app renders when the gate passes: the layout's <main> is present
// and the capture UI (Add Photo heading) is inside it.
async function expectApp(page) {
  await expect(page.locator('main')).toBeVisible();
  await expect(page.locator('main')).toContainText('Add Photo');
  // No hard-stop page.
  await expect(page.locator('.gate')).toHaveCount(0);
}

// The hard stop renders when the gate fails: the .gate box is present,
// the app's <main> is NOT, and the spec browsers are listed.
async function expectHardStop(page) {
  await expect(page.locator('.gate h1')).toHaveText('Unsupported browser');
  await expect(page.locator('main')).toHaveCount(0);
  const gate = page.locator('.gate');
  await expect(gate).toContainText('iOS Safari');
  await expect(gate).toContainText('Android Chrome');
  await expect(gate).toContainText('Chrome');
  await expect(gate).toContainText('Edge');
  await expect(gate).toContainText('Firefox');
}

test('UAT-3: app renders in desktop Chrome (supported)', async ({ page }) => {
  await openApp(page, DESKTOP_CHROME_UA);
  await expectApp(page);
});

test('UAT-3: app renders in desktop Edge (supported)', async ({ page }) => {
  await openApp(page, DESKTOP_EDGE_UA);
  await expectApp(page);
});

test('UAT-3: app renders in desktop Firefox (supported)', async ({ page }) => {
  await openApp(page, DESKTOP_FIREFOX_UA);
  await expectApp(page);
});

test('UAT-3: app renders in iOS Safari (supported)', async ({ page, context }) => {
  await context.setExtraHTTPHeaders({ 'User-Agent': IOS_SAFARI_UA });
  await page.goto('/');
  await page.waitForTimeout(300);
  await expectApp(page);
});

test('UAT-3: app renders in Android Chrome (supported)', async ({ page, context }) => {
  await context.setExtraHTTPHeaders({ 'User-Agent': ANDROID_CHROME_UA });
  await page.goto('/');
  await page.waitForTimeout(300);
  await expectApp(page);
});

test('UAT-3: hard stop in desktop Opera (unsupported)', async ({ page }) => {
  await openApp(page, DESKTOP_OPERA_UA);
  await expect(page.locator('.gate h1')).toHaveText('Unsupported browser');
  // The app must NOT render.
  await expect(page.locator('main')).toHaveCount(0);
  // The hard-stop page lists the spec browsers.
  await expect(page.locator('.gate')).toContainText('iOS Safari');
  await expect(page.locator('.gate')).toContainText('Android Chrome');
  await expect(page.locator('.gate')).toContainText('Chrome');
  await expect(page.locator('.gate')).toContainText('Edge');
  await expect(page.locator('.gate')).toContainText('Firefox');
});

test('UAT-3: hard stop in Samsung Internet (unsupported)', async ({ page, context }) => {
  await context.setExtraHTTPHeaders({ 'User-Agent': SAMSUNG_INTERNET_UA });
  await page.goto('/');
  await page.waitForTimeout(300);
  await expect(page.locator('.gate h1')).toHaveText('Unsupported browser');
  await expect(page.locator('main')).toHaveCount(0);
});