import { test, describe } from 'node:test';
import assert from 'node:assert/strict';
import { parseReplyMarkdown } from './parseReplyMarkdown';
import { renderClipboardHtml } from './renderClipboardHtml';
import { renderPlainText } from './renderPlainText';
import { serializeMarkdown } from './serializeMarkdown';
import { stripUnsafeHtml, sanitizeLinkHref, escapeHtml } from './sanitize';
import { deriveReplyTitle, sanitizeFilename } from '../../features/replyExport/title';

describe('Reply Document IR & Export Engine', () => {
  test('deriveReplyTitle and sanitizeFilename derive title and safe file name', () => {
    const md = '# 医疗器械临床评价报告\n\n本报告基于GB 9706标准进行评价。';
    const title = deriveReplyTitle(md, '2026-09-10 10:00');
    assert.equal(title, '医疗器械临床评价报告');
    const safeName = sanitizeFilename(title);
    assert.equal(safeName, '医疗器械临床评价报告');
  });

  test('deriveReplyTitle handles text without heading', () => {
    const md = '根据最新医疗器械法规要求，必须建立完整的风险管理体系。';
    const title = deriveReplyTitle(md);
    assert.ok(title.startsWith('根据最新医疗器械法规要求'));
  });

  test('parseReplyMarkdown parses headers, lists, code, and tables', () => {
    const sample = `
# 临床评价总结

1. 第一项评估
2. 第二项评估

- 无序要点 A
- 无序要点 B

> 这是一个引用说明

\`\`\`python
def evaluate():
    return True
\`\`\`

| 参数 | 阈值 | 结果 |
| :--- | :---: | ---: |
| 漏电流 | 10uA | 合格 |
| 耐压 | 1500V | 合格 |
`;
    const ir = parseReplyMarkdown(sample);
    assert.equal(ir.title, '临床评价总结');
    assert.ok(ir.nodes.length >= 6);

    const types = ir.nodes.map((b) => b.type);
    assert.ok(types.includes('heading'));
    assert.ok(types.includes('list'));
    assert.ok(types.includes('blockquote'));
    assert.ok(types.includes('code'));
    assert.ok(types.includes('table'));
  });

  test('renderClipboardHtml renders self-contained styling for office tools', () => {
    const md = `# 标题

正文包含 **粗体** 和 *斜体* 以及 [链接](https://example.com)。

- 项目 1
- 项目 2
`;
    const ir = parseReplyMarkdown(md);
    const html = renderClipboardHtml(ir);

    assert.ok(html.includes('<h1'));
    assert.ok(html.includes('style="') || html.includes('<style>'));
    assert.ok(html.includes('font-family:'));
    assert.ok(html.includes('粗体'));
    assert.ok(html.includes('斜体'));
    assert.ok(html.includes('<ul'));
  });

  test('renderClipboardHtml converts LaTeX formulas to native MathML for Word/Office', () => {
    const md = `关于超声刀振幅计算：

$$
f_0 = \\frac{c}{2L}
$$

其中声速与波长满足关系 $c = \\lambda f$。`;
    const ir = parseReplyMarkdown(md);
    const html = renderClipboardHtml(ir);

    // 验证包含标准 MathML 命名空间与标签
    assert.ok(html.includes('<math xmlns="http://www.w3.org/1998/Math/MathML"'));
    assert.ok(html.includes('<mfrac>'));
    assert.ok(html.includes('f_0'));
    assert.ok(html.includes('math-block'));
  });

  test('renderPlainText strips formatting cleanly', () => {
    const md = `# 临床报告

正文带 **重点**。

| 列1 | 列2 |
| --- | --- |
| A | B |
`;
    const ir = parseReplyMarkdown(md);
    const plain = renderPlainText(ir);

    assert.ok(plain.includes('临床报告'));
    assert.ok(plain.includes('正文带 重点。'));
    assert.ok(plain.includes('列1\t列2'));
    assert.ok(!plain.includes('**重点**'));
  });

  test('serializeMarkdown round-trips to valid markdown', () => {
    const md = `# 临床报告

正文说明。

- 要点 1
- 要点 2
`;
    const ir = parseReplyMarkdown(md);
    const serialized = serializeMarkdown(ir);

    assert.ok(serialized.includes('# 临床报告'));
    assert.ok(serialized.includes('正文说明。'));
    assert.ok(serialized.includes('- 要点 1'));
  });

  test('stripUnsafeHtml strips script tags and dangerous event handlers', () => {
    const risky = '<p>Normal</p><script>alert(1)</script><a href="javascript:steal()" onclick="alert(2)">Link</a>';
    const clean = stripUnsafeHtml(risky);

    assert.ok(!clean.includes('<script>'));
    assert.ok(!clean.includes('alert(1)'));
    assert.ok(!clean.includes('onclick'));
    assert.ok(clean.includes('Normal'));
    assert.equal(sanitizeLinkHref('javascript:alert(1)'), '#');
  });

  test('escapeHtml escapes math error payloads used by BlockEditorModal catch path', () => {
    const dirty = `<img src=x onerror=alert(1)><script>alert(2)</script>`;
    const escaped = escapeHtml(dirty);
    assert.ok(!escaped.includes('<script>'));
    assert.ok(!escaped.includes('<img'));
    assert.ok(escaped.includes('&lt;script&gt;'));
    assert.ok(escaped.includes('&lt;img'));
  });
});