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');
const VAULT_SWITCH = 'vault:switch';
const FILE_CREATE = 'file:create';
const DOC_WRITE = 'doc:write';
const DOC_READ = 'doc:read';

// 含嵌套强调、转义、4/3 反引号围栏、GFM 表格对齐、任务列表、数学公式
const KNOWN_MD = [
  '# 金标准往返语料',
  '',
  '嵌套强调：**外层 *内层* 收尾** 与 ***粗斜***。',
  '',
  '转义：写出 \\*不是斜体\\*；代码内 `*不生效*`。',
  '',
  '4 反引号围栏包裹 3 反引号：',
  '',
  '````md',
  '```js',
  'console.log("hi")',
  '```',
  '````',
  '',
  '| 左 | 中 | 右 |',
  '|:--|:-:|--:|',
  '| a | b | c |',
  '',
  '- [x] 已完成',
  '- [ ] 未完成',
  '',
  '行内 $a^2+b^2=c^2$ 与',
  '',
  '$$E=mc^2$$',
].join('\n');

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 };
}

test('金标准：建→写→存→重开 字节一致', async () => {
  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-rt-'));
  const userData = nodePath.join(tmp, 'userdata');
  const vault = nodePath.join(tmp, 'vault');
  await fs.mkdir(userData, { recursive: true });
  await fs.mkdir(vault, { recursive: true });

  // 建 + 写
  const a1 = await launch(userData);
  const ud: string = await a1.app.evaluate(({ app }) => app.getPath('userData'));
  expect(ud.startsWith(tmp)).toBeTruthy(); // 确认 --user-data-dir 生效，不污染真实数据
  await a1.invoke(VAULT_SWITCH, { root: vault });
  const created: { path: string } = await a1.invoke(FILE_CREATE, { basePath: '', name: 'roundtrip', isFolder: false });
  expect(created.path).toBe('roundtrip.md');
  await a1.invoke(DOC_WRITE, { path: 'roundtrip.md', meta: { title: '金标准往返' }, body: KNOWN_MD });
  const W1 = await fs.readFile(nodePath.join(vault, 'roundtrip.md'), 'utf8');
  await a1.app.close();

  // 重开
  const a2 = await launch(userData);
  const read: { meta: any; body: string } = await a2.invoke(DOC_READ, { path: 'roundtrip.md' });
  const W2 = await fs.readFile(nodePath.join(vault, 'roundtrip.md'), 'utf8');
  await a2.app.close();

  expect(read.body).toBe(KNOWN_MD);
  expect(W2).toBe(W1);
});