const request = require('request')

const forecast = (latitude, longitude, callback) => {
  const url = 'https://api.darksky.net/forecast/0466bccb953c0b9daeb091a529da2c0d/' + latitude + ',' + longitude + '?units=si'

  request({ url: url, json: true }, (error, response) => {
    if (error) {
      callback('Unable to connect to weather service!', undefined)
    } else if  (response.body.error) {
      callback('Unable to find location', undefined)
    } else {
      callback(undefined, response.body.daily.data[0].summary + ' It is currently ' + response.body.currently.temperature + ' degrees out. There is a ' + response.body.currently.precipProbability + '% chance of rain.')
    }
  })
}

module.exports = forecast