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app-promise.js
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app-promise.js
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const yargs = require('yargs')
const axios = require('axios')
const argv = yargs
.options({
address: {
demand: true,
alias: 'a',
describe: 'Address to fetch weather for',
string: true
}
})
.help()
.alias('help', 'h')
.alias('version', 'v')
.argv
let fromFarenheitToCelcius = (temperature) => {
return Math.round((temperature - 32) / 1.8)
}
let encodedAddress = encodeURIComponent(argv.address)
let geocodeUrl = `https://maps.googleapis.com/maps/api/geocode/json?address=${encodedAddress}`
axios.get(geocodeUrl).then((response) => {
if (response.data.status === 'ZERO_RESULTS') {
throw new Error('Unable to find that address')
}
let latitude = response.data.results[0].geometry.location.lat
let longitude = response.data.results[0].geometry.location.lng
let weatherUrl = `https://api.darksky.net/forecast/941c83b949d52e4e79a3c8bb3877a8aa/${latitude},${longitude}`
console.log(response.data.results[0].formatted_address)
return axios.get(weatherUrl)
}).then((response) => {
let temperature = response.data.currently.temperature
let apparentTemperature = response.data.currently.apparentTemperature
console.log(`It's currently ${fromFarenheitToCelcius(temperature)}. It feels like ${fromFarenheitToCelcius(apparentTemperature)}.`)
}).catch((e) => {
if (e.code === 'ENOTFOUND') {
console.log('Unable to connect to API servers.')
} else {
console.log(e.message)
}
})