import { test, expect } from '@playwright/test';
import { _electron as electron } from 'playwright';
import { promises as fs } from 'node:fs';
import nodePath from 'node:path';
import os from 'node:os';

const MAIN_JS = nodePath.join(process.cwd(), 'dist-electron/main/index.js');

async function launch(userData: string) {
  const app = await electron.launch({ args: ['--user-data-dir=' + userData, MAIN_JS] });
  const page = await app.firstWindow();
  await page.waitForLoadState('domcontentloaded');
  const invoke = (ch: string, args: any) => page.evaluate(({ ch, args }) => (globalThis as any).dsh.invoke(ch, args), { ch, args });
  return { app, page, invoke };
}

// FR-A5：GPU 探测 + 性能优先开关
test('FR-A5：GPU 探测 + 性能优先开关持久化', async () => {
  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-a5-'));
  const userData = nodePath.join(tmp, 'userdata');
  const vault = nodePath.join(tmp, 'vault');
  await fs.mkdir(userData, { recursive: true });
  await fs.mkdir(vault, { recursive: true });

  const a = await launch(userData);
  await a.invoke('vault:switch', { root: vault });

  // GPU info IPC 应可用
  const gpu = await a.invoke('gpu:info', null as any);
  expect(gpu).toBeTruthy();
  expect(typeof gpu.softwareRendering).toBe('boolean');

  // 打开设置 -> 其他页
  await a.page.getByTitle('设置').click();
  await expect(a.page.getByText('设置', { exact: true })).toBeVisible({ timeout: 5000 });
  await a.page.getByRole('button', { name: '其他' }).click();

  // 性能优先开关应可见
  await expect(a.page.getByText('性能优先')).toBeVisible({ timeout: 5000 });

  // GPU 信息应显示
  await expect(a.page.getByText(/GPU:/)).toBeVisible({ timeout: 5000 });

  // 开启性能优先——通过 data-testid 定位 toggle
  const perfToggle = a.page.getByTestId('perf-toggle');
  await perfToggle.click();

  // 关闭设置面板
  await a.page.keyboard.press('Escape');
  await a.page.waitForTimeout(500);

  // 重开应用验证持久化
  await a.app.close();
  const a2 = await launch(userData);
  await a2.invoke('vault:switch', { root: vault });
  await a2.page.getByTitle('设置').click();
  await a2.page.getByRole('button', { name: '其他' }).click();

  // perfMode 应已持久化（toggle 为开启状态）
  const toggleBg = await a2.page.getByTestId('perf-toggle').evaluate((el: HTMLButtonElement) => el.style.background);
  // 开启时 background 应为 var(--accent) 或对应值
  expect(toggleBg).toContain('accent');

  await a2.app.close();
});