iot sensor finished

1)with validation on front and backend
2)fixed seed route generating value 0 for data

Web-Server/index.js

@@ -1,49 +1,66 @@
 const { app } = require("./modules/express.js");
-const client   = require("./modules/mqtt");
-const { validateData } = require("./functions/validateData.js");
-const { insertData } = require("./functions/database.js");
-/*
-1) on data received, validate data
-2) websocket to another server
-
-*/
+const client = require("./modules/mqtt");
+const { isJson, isNumber } = require("./functions/validateData.js");
+const { insertDatatoDB } = require("./functions/database.js");
 
 // Event handlers
-client.on('connect', () => {
-    console.log('Connected to MQTT broker');
-    client.subscribe('iot-data'); 
-  });
-  
-  client.on('message', (topic, message) => {
-    //console.log(`Received message on topic ${topic}: ${message}`);
-    let data = JSON.parse(message);
-    if (validateData(data)) {
-      //upload to db logic here
-        insertData(data);
-
-      //websocket logic here??
-      
-    }
-    else {
-      console.log("Data is invalid");
-      throw new Error("Data is invalid");
-    }
-  });
-  
-  client.on('error', (err) => {
-    console.error('Error:', err);
-    client.end(); 
-  });
-  
-  client.on('end', () => {
-    console.log('Disconnected from MQTT broker');
-    client.reconnect = true;
-    }
-  );
-  
-  
-
+client.on("connect", () => {
+	console.log("Connected to MQTT broker");
+	client.subscribe("iot-data");
+});
 
+client.on("message", (topic, message) => {
+	try {
+		let datas = JSON.parse(message);
+		if (isJson(datas)) {
+			for (let key in datas) {
+				let data = parseInt(
+					datas[key].locationid +
+						" " +
+						datas[key].sensorid +
+						" " +
+						datas[key].measurement.psi +
+						" " +
+						datas[key].measurement.humidity +
+						" " +
+						datas[key].measurement.o3 +
+						" " +
+						datas[key].measurement.no2 +
+						" " +
+						datas[key].measurement.so2 +
+						" " +
+						datas[key].measurement.co +
+						" " +
+						datas[key].measurement.temperature +
+						" " +
+						datas[key].measurement.windspeed
+				);
+				if (isNumber(data)) {
+					{
+						//pass datas to database
+						insertDatatoDB(datas[key]);
 
+					}
+				} else {
+					console.log("Invalid data");
+					client.end();
+				}
+			}
+		} else {
+			console.log("Invalid data");
+			client.end();
+		}
+	} catch (err) {
+		console.error(err);
+	}
+});
 
+client.on("error", (err) => {
+	console.error("Error:", err);
+	client.end();
+});
 
+client.on("end", () => {
+	console.log("Disconnected from MQTT broker");
+	client.reconnect = true;
+});