Demo Application

import fetch from "node-fetch";
import express from "express";

const app = express();
const API_KEY = "{{API_KEY}}";

app.use(function (req, res, next) {
  res.setHeader("Access-Control-Allow-Origin", "*");
  res.setHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept, Authorization");
  res.setHeader("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE, OPTIONS");
  next();
});

const port = process.env.PORT || 4000;

async function sendLocationsResponse(response, statusCode, res) {
  try {
    const content = await response.json();

    var finalResponse = {
      'Type': 'LocationsData',
      'Status': statusCode,
      'Locations': content
    }

    res.end(JSON.stringify(finalResponse));
    
  } catch (err) {
    console.log(`Error: ${err}`);
  }
}

async function sendForecastResponse(responseDaily5Day, responseHourly12Hour, responseCurrentConditions, responseDaily1Indices, statusCode, res) {
  try {
    const contentDaily5Day = await responseDaily5Day.json();
    const contentHourly12Hour = await responseHourly12Hour.json();
    const contentCurrentConditions = await responseCurrentConditions.json();
    const contentDaily1Indices = await responseDaily1Indices.json();
    
    var finalResponse = {
      'Type': 'WeatherData',
      'Status': statusCode,
      'Daily5Day': contentDaily5Day,
      'Hourly12Hour': contentHourly12Hour,
      'CurrentConditions': contentCurrentConditions,
      'Daily1Indices': contentDaily1Indices
    }

    res.end(JSON.stringify(finalResponse));

  } catch (err) {
    console.log(`Error: ${err}`);
  }
}

// Function to make API call
async function getLocations(url, queryParameters, options, res) {
  try {
    url.search = queryParameters;
    const response = await fetch(url, options);
    // Custom function for printing the API response
    sendLocationsResponse(response, response.status, res);
  } catch (error) {
    console.log(`Error: ${err}`);
  }
}

// Function to make API call
async function getForecasts(urlDaily5Day, urlHourly12Hour, urlCurrentConditions, urlDaily1Indices, queryParameters, options, res) {
  try {
    urlDaily5Day.search = queryParameters;
    urlHourly12Hour.search = queryParameters;
    urlCurrentConditions.search = queryParameters;
    urlDaily1Indices.search = queryParameters;

    const responseDaily5Day = await fetch(urlDaily5Day, options);
    const responseHourly12Hour = await fetch(urlHourly12Hour, options);
    const responseCurrentConditions = await fetch(urlCurrentConditions, options);
    const responseDaily1Indices = await fetch(urlDaily1Indices, options);

    var statusCode = 503;
    if (responseDaily5Day.status === 200 && responseHourly12Hour.status === 200 && responseCurrentConditions.status === 200 && responseDaily1Indices.status === 200)
      statusCode = 200;
    else if (responseDaily5Day.status === 401 && responseHourly12Hour.status === 401 && responseCurrentConditions.status === 401 && responseDaily1Indices.status === 401)
      statusCode = 401;

    // Custom function for printing the API response
    sendForecastResponse(responseDaily5Day, responseHourly12Hour, responseCurrentConditions, responseDaily1Indices, statusCode, res);
  } catch (error) {
    console.log(`Error: ${err}`);
  }
}

app.get("/getLocationsData", function (req, res) {
  const location = req.query.location;

  const url = new URL(`http://dataservice.accuweather.com/locations/v1/cities/autocomplete`);

  // Define header parameters here
  const headerParameters = {
    contentType: "application/json",
  };

  // Define query parameters here
  const queryParameters = new URLSearchParams({
    apikey: API_KEY,
    q: location
  });

  // Setting API call options
  const options = {
    method: "GET",
    headers: headerParameters,
  };

  // Calling function to make API call
  getLocations(url, queryParameters, options, res);
});

app.get("/getWeatherData", function (req, res) {
  const locationKey = req.query.locationKey;

  const urlDaily5Day = new URL(`http://dataservice.accuweather.com/forecasts/v1/daily/5day/${locationKey}`);
  const urlHourly12Hour = new URL(`http://dataservice.accuweather.com/forecasts/v1/hourly/12hour/${locationKey}`);
  const urlCurrentConditions = new URL(`http://dataservice.accuweather.com/currentconditions/v1/${locationKey}`);
  const urlDaily1Indices = new URL(`http://dataservice.accuweather.com/indices/v1/daily/1day/${locationKey}`);

  // Define header parameters here
  const headerParameters = {
    contentType: "application/json",
  };

  // Define query parameters here
  const queryParameters = new URLSearchParams({
    apikey: API_KEY,
    details: true
  });

  // Setting API call options
  const options = {
    method: "GET",
    headers: headerParameters,
  };

  // Calling function to make API call
  getForecasts(urlDaily5Day, urlHourly12Hour, urlCurrentConditions, urlDaily1Indices, queryParameters, options, res);
});

app.listen(port);
console.log("Server started at {{EDUCATIVE_LIVE_VM_URL}}:" + port);