import readline from "node:readline";

import { encodeWith, installBrowserStubs, loadVendor } from "./h5_vendor_encode.mjs";

const cookie = process.env.KS_COOKIE || "";
const exportName = process.env.KS_VENDOR_EXPORT || "f";

installBrowserStubs(cookie);

const realConsole = { log: console.log, warn: console.warn, error: console.error };
if (!process.env.KS_VENDOR_DEBUG) {
  console.log = () => {};
  console.warn = () => {};
  console.error = () => {};
}

const vendor = await loadVendor();
console.log = realConsole.log;
console.warn = realConsole.warn;
console.error = realConsole.error;

const instance = vendor[exportName];
if (!instance || typeof instance.call !== "function") {
  throw new Error(`vendor export ${exportName} has no call()`);
}

const rl = readline.createInterface({
  input: process.stdin,
  crlfDelay: Infinity,
});

function writeJson(value) {
  process.stdout.write(`${JSON.stringify(value)}\n`);
}

rl.on("line", async (line) => {
  if (!line.trim()) {
    return;
  }
  let req;
  try {
    req = JSON.parse(line);
    const signInput = String(req.signInput ?? "");
    const encoded = await encodeWith(instance, signInput);
    writeJson({ id: req.id ?? null, ok: true, exportName, ...encoded });
  } catch (error) {
    writeJson({
      id: req && "id" in req ? req.id : null,
      ok: false,
      error: error && error.stack ? error.stack : String(error),
    });
  }
});

rl.on("close", () => {
  process.exit(0);
});