// 阶段门禁（架构 §7）：阶段 0 的往返稳定性套件在正式工程上必须继续全绿。
import { describe, it, expect, afterEach } from 'vitest'
import type { Editor } from '@milkdown/kit/core'
import { createMarkdownEditor, getMarkdown, callUndo } from '../src/editor/editor'

const SAMPLE = `# 标题

包含**粗体**与任务：

- [ ] 待办
- [x] 完成

| 列一 | 列二 |
| :--- | ---: |
| 甲 | 1 |

\`\`\`ts
const n = 1;
\`\`\`
`

let editors: Editor[] = []
afterEach(async () => {
  for (const e of editors) { try { await e.destroy() } catch { /* ignore */ } }
  editors = []
  document.body.innerHTML = ''
})

async function load(md: string): Promise<Editor> {
  const root = document.createElement('div')
  document.body.appendChild(root)
  const editor = createMarkdownEditor(root, md)
  editors.push(editor)
  await editor.create()
  return editor
}

describe('编辑器回归（阶段 0 套件）', () => {
  it('往返保真且第二轮逐字稳定', async () => {
    const once = getMarkdown(await load(SAMPLE))
    expect(once).toContain('**粗体**')
    expect(once).toMatch(/-\s\[ \]\s待办/)
    expect(once).toMatch(/-\s\[[xX]\]\s完成/)
    expect(once).toContain('甲')
    const twice = getMarkdown(await load(once))
    expect(twice).toBe(once)
  })

  it('撤销命令仍可用', async () => {
    const editor = await load('原文\n')
    const { editorViewCtx } = await import('@milkdown/kit/core')
    editor.action((ctx) => {
      const view = ctx.get(editorViewCtx)
      view.dispatch(view.state.tr.insertText('X', view.state.doc.content.size))
    })
    expect(getMarkdown(editor)).toContain('X')
    callUndo(editor)
    expect(getMarkdown(editor)).not.toContain('X')
  })
})