app.js

require('dotenv').config()
const express = require("express");
var ThingSpeakClient = require("thingspeakclient");
var client = new ThingSpeakClient();
var https = require("https");
var lightStatus;
const app = express();
app.use(express.static("public"));
app.set('view engine', 'ejs');
app.listen(process.env.PORT || 3000);
client.attachChannel(1328778, {
    writeKey: process.env.WRITE_KEY,
    readKey: process.env.READ_KEY,
});
app.get("/", function(req, res) {
    const url = "https://api.thingspeak.com/channels/1328778/feeds.json?results=1";
    https.get(url, function(response) {
        response.on("data", function(data) {
            var TotalData = JSON.parse(data);
            lightStatus = TotalData.feeds[0].field5;
            if (lightStatus === '1') {
                res.render("\index", {
                    Statusvar: 'Off'
                });
            } else {
                res.render("\index", {
                    Statusvar: 'On'
                });
            }
        });
    });
});

app.post("/", function(req, res) {
    const url = "https://api.thingspeak.com/channels/1328778/feeds.json?results=1";
    https.get(url, function(response) {
        response.on("data", function(data) {
            var TotalData = JSON.parse(data);
            var lightStatus = TotalData.feeds[0].field5;
            if (lightStatus === '1') {
                client.updateChannel(1328778, { field5: 0, field6: 0, field7: 0 });
                res.render("\index", {
                    Statusvar: 'On'
                });
            } else {
                client.updateChannel(1328778, { field5: 1, field6: 1, field7: 1 });
                res.render("\index", {
                    Statusvar: 'Off'
                });
            }

        });
    })
})
app.get("/About", function(req, res) {
    res.sendFile(__dirname + "/about.html")
})
app.post("/About", function(req, res) {
    res.redirect("/");
})