import { Buffer } from "node:buffer";

export function sendJson(res, status, payload) {
  const body = JSON.stringify(payload, null, 2);
  res.writeHead(status, {
    "Content-Type": "application/json; charset=utf-8",
    "Content-Length": Buffer.byteLength(body),
    "Access-Control-Allow-Origin": "*",
    "Access-Control-Allow-Methods": "GET,POST,PUT,DELETE,OPTIONS",
    "Access-Control-Allow-Headers": "Content-Type",
  });
  res.end(body);
}

export function sendText(res, status, text) {
  res.writeHead(status, {
    "Content-Type": "text/plain; charset=utf-8",
    "Content-Length": Buffer.byteLength(text),
    "Access-Control-Allow-Origin": "*",
  });
  res.end(text);
}

export async function readJsonBody(req) {
  const chunks = [];
  for await (const chunk of req) chunks.push(chunk);
  const raw = Buffer.concat(chunks).toString("utf-8").trim();
  return raw ? JSON.parse(raw) : {};
}