import assert from "node:assert/strict";
import { createRequire } from "node:module";
import test from "node:test";

const require = createRequire(import.meta.url);
const marked = require("../web/static/vendor/markdown/marked.umd.js");
globalThis.window = { marked };

const { normalizeMarkdownFences, renderMd } = await import("../web/static/js/markdown.js");

test("repairs equal-length nested markdown fences", () => {
  const broken = [
    "```markdown",
    "```mermaid",
    "flowchart LR",
    "    A --> B",
    "```",
    "```",
    "",
    "正文 **正常**。",
    "",
  ].join("\n");

  const repaired = normalizeMarkdownFences(broken);

  assert.match(repaired, /^````markdown\n```mermaid/);
  assert.match(repaired, /```\n````\n\n正文 \*\*正常\*\*。/);
  const html = renderMd(broken);
  assert.match(html, /<p>正文 <strong>正常<\/strong>。<\/p>/);
});

test("preserves unrelated unclosed fences", () => {
  const broken = "正文\n```python\nprint('x')\n";
  assert.equal(normalizeMarkdownFences(broken), broken);
});