formatters.js

'use strict';
let chalk = require('chalk')


//const MAX_SIGNAL = -35
//const MIN_SIGNAL = -90
//const MAX_SNR = 40
//const MIN_SNR = 10

// level should be a negative number
//function signalLevelMarkers(level) {
  //level = Math.min(MAX_SIGNAL, level)
  //level = Math.max(MIN_SIGNAL, level)

  //let range = Math.abs(MAX_SIGNAL - MIN_SIGNAL)
  //let shiftedLevel = (-level + MAX_SIGNAL)
  //let pp = (range - shiftedLevel) / range
  //let p = Math.round(pp * 10)
  //var q = 10 - p;
  //return "|".repeat(p) + "-".repeat(q)
//}

//function snrMarkers(snr) {
  //snr = Math.min(MAX_SNR, snr)
  //snr = Math.max(MIN_SNR, snr)

  //let range = Math.abs(MAX_SNR - MIN_SNR)
  //let shiftedLevel = (snr - MIN_SNR)
  //let pp = shiftedLevel / range
  //let p = Math.round(pp * 10)
  //let q = 10 - p;
  //return "|".repeat(p) + "-".repeat(q)
//}

//function signalLevelDescription(level) {
    //if (level >= -50)
      //return 'Excelent'
    //else if (level >= -60)
      //return 'Good'
    //else if (level >= -70)
      //return 'Fair'

    //return 'Bad'
//}

// snr Status, description and Markers (levels) are calculated according to the following resources
// http://www.wireless-nets.com/resources/tutorials/define_SNR_values.html
//http://www.enterprisenetworkingplanet.com/netsp/article.php/3747656/WiFi-Define-Minimum-SNR-Values-for-Signal-Coverage.htm
//function snrDescription(snr) {
    //if (snr >= 40)
      //return 'Excelent'
    //else if (snr >= 25)
      //return 'Good'
    //else if (snr >= 15)
      //return 'Low'
    //else if (snr >= 10)
      //return 'Very Low'

    //return 'No Signal'
//}

//function snrColor(snr) {
    //if (snr >= 40)
      //return chalk.blue
    //else if (snr >= 25)
      //return chalk.green
    //else if (snr >= 15)
      //return chalk.yellow
    //else if (snr >= 10)
      //return chalk.red

    //return chalk.red
//}

//exports.snrStatus = function snrStatus(snr) {
    //if (snr >= 40)
      //return 'always associated, lightening fast.'
    //else if (snr >= 25)
      //return 'always associated, very fast'
    //else if (snr >= 15)
      //return 'always associated, usually fast'
    //else if (snr >= 10)
      //return 'mostly associated, mostly slow'

    //return 'not associated, no go'
//}

function signalLevelColor(level) {
    if (level >= -50)
      return chalk.blue
    else if (level >= -60)
      return chalk.green
    else if (level >= -70)
      return chalk.yellow

    return chalk.red
}

function signalLevelStatus(level) {
    if (level >= -50)
      return 'Perfect!'
    else if (level >= -60)
      return 'Every application should work correctly'
    else if (level >= -70)
      return 'You might experience some troubles with Voip and streaming'
    else if (level >= -80)
      return 'Expect difficulties to surf the web'

    return 'Expect no internet access'
}




exports.getPercentage = function getPercentage(value, min, max) {
  if (min == null) {
    min = 0
  }
  if (max == null) {
    max = 100
  }

  value = Math.min(max, value)
  value = Math.max(min, value)
  let range = Math.abs(max - min)

  let shiftedValue = (value - min)
  return shiftedValue / range
}

exports.getMarkers = function getMarkers(percentage) {
  let p = Math.round(percentage * 10)
  var q = 10 - p;
  return "|".repeat(p) + "-".repeat(q)
}

exports.getColor = function getColor(percentage) {
  let value = percentage * 100
  if (value >= 75)
    return chalk.blue
  else if (value >= 50)
    return chalk.green
  else if (value >= 25)
    return chalk.yellow

  return chalk.red
}

//module.exports = {
  //MAX_SIGNAL,
  //MIN_SIGNAL,
  //signalLevelMarkers,
  //MAX_SNR,
  //MIN_SNR,
  //snrMarkers,
  //signalLevelDescription,
  //signalLevelColor,
  //signalLevelStatus,
  //snrColor,
  //snrDescription,
  //snrStatus,
  //getMarkers,
  //getColor,
  //getPercentage
//}