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-E5 代码块语言切换：每个代码块顶部语言下拉 -> 切换 language 属性
test('FR-E5：代码块语言下拉切换生效', async () => {
  const tmp = await fs.mkdtemp(nodePath.join(os.tmpdir(), 'hn-e5-'));
  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 });

  await a.page.getByRole('button', { name: /新建文档/ }).click();
  await a.page.getByPlaceholder(/输入文档标题/).fill('代码块');
  await a.page.getByPlaceholder(/输入文档标题/).press('Enter');
  await expect(a.page.getByTestId('tabbar').getByText('代码块', { exact: true })).toBeVisible({ timeout: 10000 });

  const editor = a.page.locator('.ProseMirror');
  await editor.click();
  // 插入代码块并输入内容
  await a.page.locator('button[title="代码块 Ctrl+Shift+K"]').click();
  await a.page.keyboard.type('key: value');

  // 代码块顶部应渲染语言下拉
  const select = a.page.locator('.ProseMirror select');
  await expect(select).toBeVisible({ timeout: 10000 });

  // 切换到 YAML -> code 元素带 language-yaml
  await select.selectOption('yaml');
  let cls: string = await a.page.locator('.ProseMirror pre code').evaluate(el => (el as HTMLElement).className);
  expect(cls).toContain('language-yaml');

  // 切换到 JSON -> language-json
  await select.selectOption('json');
  cls = await a.page.locator('.ProseMirror pre code').evaluate(el => (el as HTMLElement).className);
  expect(cls).toContain('language-json');

  // 切换到 TypeScript -> language-typescript
  await select.selectOption('typescript');
  cls = await a.page.locator('.ProseMirror pre code').evaluate(el => (el as HTMLElement).className);
  expect(cls).toContain('language-typescript');

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