app.js

const express = require("express");
const https = require("https");
const bodyParser = require("body-parser");
const token = require("./weatherToken.json");

const app = express();

app.use(bodyParser.urlencoded({extended: true}));

app.get('/', (req, res)=>{
  res.sendFile(__dirname + "/index.html");
});

app.post("/", function(req, res){
  console.log("Post requested received.");

  const query = req.body.cityName;
  const apiKey = token.token;
  const unit = "metric";
  const url = "https://api.openweathermap.org/data/2.5/weather?q="+query+"&units="+unit+"&appid=" + apiKey;

  https.get(url, function(response){
    console.log(response.statusCode);

    response.on("data", function(data){
      // console.log(data); //returns hexadecimal data
      const weatherData = JSON.parse(data);
      // console.log(weatherData);
      const temp = weatherData.main.temp;
      const weatherDescription = weatherData.weather[0].description;
      const iconURL = "http://openweathermap.org/img/wn/" +weatherData.weather[0].icon+"@2x.png";
      
      res.write("<h1>The temperature in "+query+" is "+temp+" degrees is Celcius.</h1>");
      res.write("<p>The weather is currenctly "+weatherDescription+"</p>");
      res.write("<img src='"+iconURL+"'/>");
      res.send();
    });

  });
  // res.send("Server up and running.");
});


app.listen(3000, ()=>{
  console.log("Server is running on port 3000.");
});