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JavaScript Node.js Basics 2017 Create a Command Line Weather Application Parsing Data and Printing - Solution

han voon wong
han voon wong
11,650 Points

does anyone try openweather and successfully did it ?

does anyone try openweather and successfully did it ?

1 Answer

I haven't use Querystring package yet will update later.

getWeather.js

// Require http / https module to GET web data
const http = require('http')
const https = require('https')
const apiKey =  require('./apiKey.json')


// Functions 
function printWeather (weatherObj) {
  let weatherMsg = `
    Location: ${weatherObj.name}
    Weather: ${weatherObj.weather[0].main}
    Temperature: ${Math.round((weatherObj.main.temp-273.15) * 10) / 10}C
  `
  console.log(weatherMsg);
}

function printErrorMsg (error) {
  console.error(error.message);
}

function getWeather (zip, location) {
  // weather api
  const URL = `https://api.openweathermap.org/data/2.5/weather?zip=${zip}&q=${location}&&appid=${apiKey.apiKey}`
  try {
    const request = https.get(URL, res => {
      if (res.statusCode === 200) {
        let body = ''
        let weatherObj
        res.on('data', data => {
          body += data.toString()
        })
        res.on('end', () => {
          weatherObj = JSON.parse(body)
          printWeather(weatherObj)
        })
      } else {
        const errorCode = new Error(`${location || zip} is not found.(${res.statusMessage}-${res.statusCode})`)
        printErrorMsg(errorCode)
      }
    })

    request.on('error', printErrorMsg) // Handle error of connection issue
  } catch (error) {
    // Handle error of wrong domain issue
    printErrorMsg(error)
  }
}


module.exports = getWeather

app.js

// Require getWeather module
const getWeather = require('./getWeather')

// Input
const zip = isNaN(process.argv.slice(2)[0]) ? '' : process.argv.slice(2)[0]
const city = zip ? '' : process.argv.slice(2)[0] || ''
const country = zip ? '' : process.argv.slice(2)[1] ? ',' + process.argv.slice(2)[1] : ''
const location = city + country

getWeather(zip, location)