import express from "express";
import path from "path";
import { fileURLToPath } from "url";
import { derive } from "./derive-lib.mjs";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

const app = express();
app.disable("x-powered-by");

app.use(express.json({ limit: "1mb" }));

// 静态资源：/static/*
app.use("/static", express.static(path.join(__dirname, "static")));

app.get("/", (_req, res) => {
  res.sendFile(path.join(__dirname, "static", "index.html"));
});

app.post("/api/derive", (req, res) => {
  try {
    const { scheme = "tupa", text = "", options = undefined } = req.body || {};
    res.json(derive({ scheme, text, options }));
  } catch (e) {
    res.status(400).send(e?.message ? String(e.message) : String(e));
  }
});

const port = Number.parseInt(process.env.PORT || "8000", 10);
app.listen(port, () => {
  // eslint-disable-next-line no-console
  console.log(`Server listening on http://127.0.0.1:${port}`);
});