import type { Highlighter } from "shiki";

let _highlighter: Highlighter | null = null;

async function getHighlighter(): Promise<Highlighter> {
  if (_highlighter) return _highlighter;
  const { createHighlighter } = await import("shiki");
  _highlighter = await createHighlighter({
    themes: ["github-light", "github-dark"],
    langs: ["sql"],
  });
  return _highlighter;
}

export async function highlightSql(code: string): Promise<string> {
  const hl = await getHighlighter();
  return hl.codeToHtml(code, {
    lang: "sql",
    themes: { light: "github-light", dark: "github-dark" },
  });
}