สร้างบอทที่คุยกับผู้ใช้ HeloSChat ได้จริง

import crypto from "node:crypto";
import express from "express";

const app = express();
app.use(express.raw({ type: "application/json" }));

app.post("/webhook", async (req, res) => {
  const sig = "sha256=" + crypto
    .createHmac("sha256", process.env.WEBHOOK_SECRET)
    .update(req.body).digest("hex");
  if (sig !== req.get("X-Helos-Bot-Signature")) return res.sendStatus(401);

  const { event } = JSON.parse(req.body);
  res.sendStatus(200);

  if (event.type === "message.create") {
    await fetch("https://bots.gugarhices.com/v1/messages/reply", {
      method: "POST",
      headers: {
        "Authorization": "Bearer " + process.env.BOT_TOKEN,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        replyToken: event.reply_token,
        messages: [{ type: "text", text: "Hello" }],
      }),
    });
  }
});