How Indian Colleges Automate Admissions & Inquiries with WhatsApp AI Agents

import express from 'express';
import axios from 'axios';

const app = express();
app.use(express.json());

const META_ACCESS_TOKEN = process.env.META_ACCESS_TOKEN;
const PHONE_NUMBER_ID = process.env.PHONE_NUMBER_ID;

// WhatsApp Webhook Receiver
app.post('/webhook/whatsapp', async (req, res) => {
  const body = req.body;

  if (body.object === 'whatsapp_business_account') {
    const entry = body.entry?.[0];
    const changes = entry?.changes?.[0];
    const message = changes?.value?.messages?.[0];

    if (message) {
      const from = message.from; // Student WhatsApp Number
      const text = message.text?.body?.toLowerCase() || '';

      // Route Inquiry based on Keyword / Intent
      if (text.includes('admission') || text.includes('dakhila') || text.includes('fees')) {
        await sendInteractiveCourseMenu(from);
      }
    }
    return res.status(200).send('EVENT_RECEIVED');
  }
  res.sendStatus(404);
});

// Send Interactive WhatsApp Button Menu
async function sendInteractiveCourseMenu(toPhone: string) {
  const payload = {
    messaging_product: "whatsapp",
    recipient_type: "individual",
    to: toPhone,
    type: "interactive",
    interactive: {
      type: "button",
      header: { type: "text", text: "Sat Sri Akal! Welcome to Campus AI" },
      body: { text: "Select your desired program to check fee structure & 12th eligibility instantly:" },
      footer: { text: "Official College Admission Portal" },
      action: {
        buttons: [
          { type: "reply", reply: { id: "btn_btech", title: "B.Tech CSE / AI" } },
          { type: "reply", reply: { id: "btn_bca_mca", title: "BCA / MCA" } },
          { type: "reply", reply: { id: "btn_mba", title: "MBA / BBA" } }
        ]
      }
    }
  };

  await axios.post(`https://graph.facebook.com/v19.0/${PHONE_NUMBER_ID}/messages`, payload, {
    headers: { Authorization: `Bearer ${META_ACCESS_TOKEN}` }
  });
}