calc-transporte/lib/utils.js

Calculadora de transporte AMBA

"use strict";

var formatDate = function(date) {
  if (date == null) return null;

  var year = date.getFullYear();
  var month = date.getMonth() + 1;
  if (month < 10) {
    month = "0" + month;
  }
  var day = date.getDate();
  if (day < 10) {
    day = "0" + day;
  }

  return year + "-" + month + "-" + day;
};

var Comparator = function(a, b) {
  if (a < b) return -1;
  if (a > b) return 1;
  return 0;
};

var getClosestDate = function(date, data) {
  var dates = data.map(function(o) {
    return o.date;
  });
  dates.sort(Comparator);
  return getNearest(dates, date);
};

var getNearest = function(array, item) {
  var nearest;
  var BreakException = {};

  try {
    array.forEach(function(x) {
      if (!nearest || item >= x) {
        nearest = x;
      } else {
        throw BreakException;
      }
    });
  } catch (e) {
    if (e !== BreakException) throw e;
  }

  return nearest;
};

module.exports = {
  formatDate: formatDate,
  Comparator: Comparator,
  getClosestDate: getClosestDate,
  getNearest: getNearest
};