Update homepage greeting

index.js

@@ -1,36 +1,282 @@
-const express = require('express')
-const path = require('path')
-
-const port = process.env.PORT || 5006
-
-const app = express()
-
-app.use(express.static(path.join(__dirname, 'public')))
-app.set('views', path.join(__dirname, 'views'))
-app.set('view engine', 'ejs')
-
-app.get('/', (req, res) => {
-  console.log(`Rendering 'pages/index' for route '/'`)
-  res.render('pages/index')
-})
-
-const server = app.listen(port, () => {
-  console.log(`Listening on ${port}`)
-})
-
-// The number of seconds an idle Keep-Alive connection is kept open. This should be greater than the Heroku Router's
-// Keep-Alive idle timeout of 90 seconds:
-// - to ensure that the closing of idle connections is always initiated by the router and not the Node.js server
-// - to prevent a race condition if the router sends a request to the app just as Node.js is closing the connection
-// https://devcenter.heroku.com/articles/http-routing#keepalives
-// https://nodejs.org/api/http.html#serverkeepalivetimeout
-server.keepAliveTimeout = 95 * 1000
-
-process.on('SIGTERM', async () => {
-  console.log('SIGTERM signal received: gracefully shutting down')
-  if (server) {
-    server.close(() => {
-      console.log('HTTP server closed')
-    })
-  }
-})
+const express = require("express");
+const axios = require("axios");
+const bodyParser = require("body-parser");
+
+const app = express();
+app.use(bodyParser.json());
+
+const PORT = process.env.PORT || 10000;
+
+/* ========== CONFIG ========== */
+
+const TOKEN = process.env.WHATSAPP_TOKEN;
+const PHONE_ID = process.env.PHONE_NUMBER_ID;
+const SHEET_URL = process.env.SHEET_WEBHOOK;
+const OWNER_UPI = "8121893882-2@ybl";
+
+/* ========== SESSION STORE ========== */
+
+const sessions = {};
+
+function newSession(phone) {
+  return {
+    orderId: "ORD-" + Date.now(),
+    phone,
+    step: "MENU",
+  };
+}
+
+/* ========== PRODUCTS ========== */
+
+const PRODUCTS = {
+  "1": { name: "Buffalo Milk", price: 100 },
+  "2": { name: "Cow Milk", price: 120 },
+  "3": { name: "Paneer", price: 600 },
+  "4": { name: "Ghee", price: 1000 },
+  "5": { name: "Daily Milk Subscription" },
+  "6": { name: "Talk to Owner" },
+};
+
+/* ========== SEND MESSAGE ========== */
+
+async function sendMessage(to, text) {
+  await axios.post(
+    `https://graph.facebook.com/v18.0/${PHONE_ID}/messages`,
+    {
+      messaging_product: "whatsapp",
+      to,
+      text: { body: text },
+    },
+    {
+      headers: {
+        Authorization: `Bearer ${TOKEN}`,
+        "Content-Type": "application/json",
+      },
+    }
+  );
+}
+
+/* ========== SAVE TO SHEET ========== */
+
+async function saveToSheet(data) {
+  await axios.post(SHEET_URL, data);
+}
+
+/* ========== MENU TEXT ========== */
+
+function menuText() {
+  return `🥛 *Welcome to Bala Milk Store*
+
+Please choose an option:
+1️⃣ Buffalo Milk – ₹100/L
+2️⃣ Cow Milk – ₹120/L
+3️⃣ Paneer – ₹600/Kg
+4️⃣ Ghee – ₹1000/Kg
+5️⃣ Daily Milk Subscription
+6️⃣ Talk to Owner
+
+Reply with option number.`;
+}
+
+/* ========== WEBHOOK ========== */
+
+app.post("/webhook", async (req, res) => {
+  const msg = req.body.entry?.[0]?.changes?.[0]?.value?.messages?.[0];
+  if (!msg) return res.sendStatus(200);
+
+  const from = msg.from;
+  const text = msg.text?.body?.trim();
+  const location = msg.location;
+  const image = msg.image;
+
+  if (!sessions[from]) {
+    sessions[from] = newSession(from);
+    await sendMessage(from, menuText());
+    return res.sendStatus(200);
+  }
+
+  const s = sessions[from];
+
+  /* ===== MENU ===== */
+  if (s.step === "MENU") {
+    if (!PRODUCTS[text]) {
+      await sendMessage(from, "❌ Invalid option.\n\n" + menuText());
+      return res.sendStatus(200);
+    }
+
+    if (text === "6") {
+      await sendMessage(from, "📞 Please call: 8121893882");
+      delete sessions[from];
+      return res.sendStatus(200);
+    }
+
+    s.product = PRODUCTS[text].name;
+    s.unitPrice = PRODUCTS[text].price;
+    s.step = "QTY";
+
+    await sendMessage(
+      from,
+      `🧾 *${s.product}*
+
+Choose quantity:
+1️⃣ 500ml – ₹${s.unitPrice * 0.5}
+2️⃣ 1 L – ₹${s.unitPrice}
+3️⃣ 2 L – ₹${s.unitPrice * 2}`
+    );
+    return res.sendStatus(200);
+  }
+
+  /* ===== QUANTITY ===== */
+  if (s.step === "QTY") {
+    if (!["1", "2", "3"].includes(text)) {
+      await sendMessage(from, "❌ Choose 1 / 2 / 3");
+      return res.sendStatus(200);
+    }
+
+    const map = {
+      "1": { qty: "500ml", mul: 0.5 },
+      "2": { qty: "1L", mul: 1 },
+      "3": { qty: "2L", mul: 2 },
+    };
+
+    s.quantity = map[text].qty;
+    s.price = s.unitPrice * map[text].mul;
+    s.step = "ADDRESS";
+
+    await sendMessage(
+      from,
+      `📍 *Delivery Address*
+
+1️⃣ Send live location
+2️⃣ Type address manually`
+    );
+    return res.sendStatus(200);
+  }
+
+  /* ===== ADDRESS ===== */
+  if (s.step === "ADDRESS") {
+    if (location) {
+      s.address = `Live Location: ${location.latitude}, ${location.longitude}`;
+    } else {
+      s.address = text;
+    }
+
+    s.step = "SLOT";
+    await sendMessage(from, "🚚 Choose delivery slot:\n1️⃣ Morning\n2️⃣ Evening");
+    return res.sendStatus(200);
+  }
+
+  /* ===== SLOT ===== */
+  if (s.step === "SLOT") {
+    if (!["1", "2"].includes(text)) {
+      await sendMessage(from, "❌ Choose 1 or 2");
+      return res.sendStatus(200);
+    }
+
+    s.slot = text === "1" ? "Morning" : "Evening";
+    s.step = "TIME";
+    await sendMessage(from, "⏰ Enter delivery time (example: 6:30 AM)");
+    return res.sendStatus(200);
+  }
+
+  /* ===== TIME ===== */
+  if (s.step === "TIME") {
+    s.time = text;
+    s.step = "PAYMENT_CHOICE";
+
+    await sendMessage(
+      from,
+      `💰 Choose payment method:
+1️⃣ UPI
+2️⃣ Cash on Delivery`
+    );
+    return res.sendStatus(200);
+  }
+
+  /* ===== PAYMENT CHOICE ===== */
+  if (s.step === "PAYMENT_CHOICE") {
+    if (text === "1") {
+      s.paymentMethod = "UPI";
+      s.step = "UPI_SCREENSHOT";
+      await sendMessage(
+        from,
+        `📲 Pay using UPI:
+
+${OWNER_UPI}
+
+After payment, please send screenshot.`
+      );
+      return res.sendStatus(200);
+    }
+
+    if (text === "2") {
+      s.paymentMethod = "Cash on Delivery";
+      await finalizeOrder(from, s);
+      return res.sendStatus(200);
+    }
+
+    await sendMessage(from, "❌ Choose 1 or 2");
+    return res.sendStatus(200);
+  }
+
+  /* ===== UPI SCREENSHOT ===== */
+  if (s.step === "UPI_SCREENSHOT") {
+    if (!image) {
+      await sendMessage(from, "❌ Please send payment screenshot.");
+      return res.sendStatus(200);
+    }
+
+    s.screenshot = image.id;
+    await finalizeOrder(from, s);
+    return res.sendStatus(200);
+  }
+
+  res.sendStatus(200);
+});
+
+/* ========== FINALIZE ORDER ========== */
+
+async function finalizeOrder(from, s) {
+  await saveToSheet({
+    orderId: s.orderId,
+    date: new Date().toLocaleString(),
+    phone: s.phone,
+    product: s.product,
+    quantity: s.quantity,
+    price: s.price,
+    address: s.address,
+    delivery: `${s.slot} ${s.time}`,
+    payment: s.paymentMethod,
+    screenshot: s.screenshot || "",
+  });
+
+  await sendMessage(
+    from,
+    `✅ *Order Confirmed!*
+
+🧾 Order ID: ${s.orderId}
+🥛 ${s.product}
+📦 ${s.quantity}
+💰 ₹${s.price}
+🚚 ${s.slot} ${s.time}
+
+🙏 Thank you for choosing *Bala Milk Store*`
+  );
+
+  delete sessions[from];
+}
+
+/* ========== VERIFY ========== */
+
+app.get("/webhook", (req, res) => {
+  if (req.query["hub.verify_token"] === process.env.VERIFY_TOKEN) {
+    return res.send(req.query["hub.challenge"]);
+  }
+  res.sendStatus(403);
+});
+
+/* ========== START ========== */
+
+app.listen(PORT, () => {
+  console.log("Server running on port", PORT);
+});

package.json

@@ -1,30 +1,16 @@
 {
-  "name": "nodejs-getting-started",
-  "private": true,
-  "description": "A sample Node.js app using Express",
-  "engines": {
-    "node": "20.x || 22.x || 24.x"
-  },
+  "name": "bala-whatsapp-bot",
+  "version": "1.0.0",
+  "description": "WhatsApp Cloud API bot for Bala Milk Store",
   "main": "index.js",
   "scripts": {
-    "start": "node index.js",
-    "test": "jest"
-  },
-  "dependencies": {
-    "ejs": "^3.1.10",
-    "express": "^5.2.1"
+    "start": "node index.js"
   },
-  "devDependencies": {
-    "jest": "^30.2.0"
-  },
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/heroku/nodejs-getting-started"
+  "engines": {
+    "node": ">=18"
   },
-  "keywords": [
-    "node",
-    "heroku",
-    "express"
-  ],
-  "license": "MIT"
+  "dependencies": {
+    "axios": "^1.6.2",
+    "express": "^4.18.2"
+  }
 }

views/pages/index.ejs

@@ -13,7 +13,7 @@
     <a href="/" class="lang-logo">
       <img src="/lang-logo.png">
     </a>
-    <h1>Getting Started on Heroku with Node.js</h1>
+    <h1>Hello from Balaraju 🚀</h1>
     <p>This is a sample Node application deployed to Heroku. It's a reasonably simple app - but a good foundation for understanding how to get the most out of the Heroku platform.</p>
     <a type="button" class="btn btn-lg btn-default" href="https://devcenter.heroku.com/articles/getting-started-with-nodejs"><span class="glyphicon glyphicon-flash"></span> Getting Started on Heroku with Node.js</a>
     <a type="button" class="btn btn-lg btn-default" href="https://devcenter.heroku.com/articles/getting-started-with-nodejs-fir"><span class="glyphicon glyphicon-flash"></span> Getting Started on Heroku Fir with Node.js</a>