const log = console.log
const fs = require('fs')
const {table} = require('table')

const HOURS_AHEAD = 12

// https://medium.com/@osiolabs/read-write-json-files-with-node-js-92d03cc82824
const jsonReader = (filePath, cb) => {
  fs.readFile(filePath, (err, fileData) => {
    if (err) {
      return cb && cb(err)
    }
    try {
      const object = JSON.parse(fileData)
      return cb && cb(null, object)
    } catch(err) {
      return cb && cb(err)
    }
  })
}

jsonReader('./dark-sky.json', (err, weatherInfo) => {
  if (err) {
    console.log(err)
    return
  }
  
  const tableConfig = {
    columns: {
      0: { alignment: 'center' },
      1: { alignment: 'center' },
      2: { alignment: 'center' },
    }
  }
  const infoList = [['H', '°C', '%P']]
  for (let i = 0; i < HOURS_AHEAD; i++) {
    const hourInfo = weatherInfo['hourly']['data'][i]
    const date = new Date(hourInfo['time'] * 1000)
    infoList.push([date.getHours(),
      Math.floor(hourInfo['apparentTemperature']),
      Math.floor(hourInfo['precipProbability'])])
  }

  log(table(infoList, tableConfig));
})