server.js

const express = require("express");
const { createHighlighter } = require("shiki");
const fs = require("fs");

const app = express();
const port = 3000;

app.use(express.json());
app.use(express.static("./test"));

const morGrammar = JSON.parse(fs.readFileSync("mor.tmLanguage.json", "utf8"));

let highlighter;

async function initHighlighter() {
  highlighter = await createHighlighter({
    themes: ["monokai", "github-dark", "github-light", "dracula"],
    langs: [morGrammar],
  });
  console.log("Shiki highlighter initialized");
}

app.post("/highlight", async (req, res) => {
  try {
    const { code, theme } = req.body;

    if (!highlighter) {
      await initHighlighter();
    }

    const highlighted = highlighter.codeToHtml(code, {
      lang: "mor",
      theme: theme,
    });

    res.json({ highlighted });
  } catch (error) {
    console.error("Highlight error:", error);
    res.status(500).json({ error: error.message });
  }
});

app.get("/themes", (_, res) => {
  res.json(["monokai", "github-dark", "github-light", "dracula"]);
});

async function startServer() {
  await initHighlighter();
  app.listen(port, () => {
    console.log(`Server running at http://localhost:${port}`);
  });
}

startServer();