/inlinecurrency.js

var rates = {};

var currencies = [

  "AUD", "BGN", "BRL", "CAD", "CHF", 

  "CNY", "CZK", "DKK", "EUR", "GBP", "HKD", 

  "HRK", "HUF", "IDR", "ILS", "INR", 

  "JPY", "KRW", "MXN", "MYR", "NOK", 

  "NZD", "PHP", "PLN", "RON", "RUB", 

  "SEK", "SGD", "THB", "TRY", "USD", "ZAR"

];

var valueRegex = /(^|\W)([A-Za-z]{3})\s?(\d+(\.\d{2})?)(-(\d+(\.\d{2})?))?($|\W)/im;

var classRegex = /([A-Za-z]{3}\d+(\.\d{2})?(-\d+(\.\d{2})?)?)/igm;

var currencyClass = "currency";

var elementQuery = "." + currencyClass;

var targetCcy = undefined;

var targetCcyDefault = "EUR";

var ddmIdStr = "currencyDDM";

var ddmClassStr = "currencyDDM";

var apiURL = "http://api.fixer.io/latest?base=" // "api/";



var markTextWithClass = function(regex, classStr) {

  var textNodes = getTextNodesIn(jQuery("body"));

  textNodes.replaceWith(function() {

    var text = jQuery(this)[0].textContent;

    return text.replace(regex, '<span class="' + classStr + '">$1</span>');

  });

};



var getRates = function(targetCurrency, updateElements) {

  targetCurrency = targetCurrency.toUpperCase();

  jQuery.getJSON( apiURL + targetCurrency, function(data) {

    var r;

    if (targetCurrency in rates)

      r = rates[targetCurrency];

    else {

      r = {};

      rates[targetCurrency] = r;

    }



    jQuery.extend(r, data.rates);

    jQuery.each(data.rates, function(curr, val ) {

      if (!(curr in rates))

        rates[curr] = {};

      rates[curr][targetCurrency] = 1/val;

    });



    if (updateElements)

      jQuery(elementQuery).each(convertElement(targetCurrency));

  });

};



var convertElement = function(targetCurrency) {

  targetCurrency = targetCurrency.toUpperCase();

  return function(index) {

    var text = jQuery(this).text();

    var matches = valueRegex.exec(text);

    var baseCurrency = matches[2].toUpperCase();

    var value = parseFloat(matches[3]);

    var isRange = matches[6] ? true : false;

    var valueTo = isRange ? parseFloat(matches[6]) : undefined;



    var rate = 0;



    if (baseCurrency !== targetCurrency && baseCurrency in rates && targetCurrency in rates[baseCurrency]) 

      rate = rates[baseCurrency][targetCurrency];



    text = baseCurrency + ' ' + matches[3];

    if (isRange)

      text += '-' + matches[6];

    if (rate) {

      var valueConverted = value * rate;

      text += ' (' + targetCurrency + ' ' + valueConverted.toFixed(2);

      if (isRange) {

        var valueToConverted = valueTo * rate;

        text += '-' + valueToConverted.toFixed(2);

      }

      text += ')';

    }

    jQuery(this).html(text);

  };

};



var getTextNodesIn = function(el) {

  return jQuery(el).find(":not(iframe)").addBack().contents().filter(function() {

    return this.nodeType === 3;

  });

};



var initDropDownMenu = function(parent, idStr, classStr, defaultCurr, currs) {

  if (!idStr)

    idStr = ddmIdStr;

  if (!classStr)

    classStr = ddmClassStr;

  if (!defaultCurr)

    defaultCurr = targetCcy;

  if (!currs)

    currs = currencies;



  html = '<select id="' + idStr + '" class="' + classStr + '">';

  for (var i = 0; i < currs.length; i++)

    html += '<option value="' + currs[i] + '"' + 

              (defaultCurr === currs[i] ? ' selected="selected"' : '') + '>' + 

              currs[i] + '</option>';

  html += '</select>';



  jQuery(html).on('change', function() {

    setTargetCcy(jQuery(this).val(), false);

    getRates(targetCcy, true);

  }).appendTo(parent);

};



var getTargetCcy = function(doGetRates) {

  if (!targetCcy && "localStorage" in window && window.localStorage.getItem('targetCcy'))

    setTargetCcy(window.localStorage.getItem('targetCcy'), true);

  else if (!targetCcy) {

    jQuery.getJSON('http://ipinfo.io', function(data) {

      console.log(data);

      var country = data.country;

      var ccy = countryCcy[country];

      if (ccy) {

        console.log(ccy);

        setTargetCcy(ccy, true);

        if (doGetRates)

          getRates(targetCcy, true);

      }

    });

    targetCcy = targetCcyDefault;

  }



  if (doGetRates)

    getRates(targetCcy, true);

  return targetCcy;

};



var setTargetCcy = function(ccy, updateDDM) {

  targetCcy = ccy;

  if ("localStorage" in window)

    window.localStorage.setItem('targetCcy', targetCcy);

  if (updateDDM)

    jQuery('#' + ddmIdStr).val(targetCcy);

  return targetCcy;

}



jQuery(function(){

  markTextWithClass(classRegex, currencyClass);

  getTargetCcy(true);

  initDropDownMenu(jQuery("#ddmContainer"));

});



var countryCcy = {

  BD: "BDT",

  BE: "EUR",

  BF: "XOF",

  BG: "BGN",

  BA: "BAM",

  BB: "BBD",

  WF: "XPF",

  BL: "EUR",

  BM: "BMD",

  BN: "BND",

  BO: "BOB",

  BH: "BHD",

  BI: "BIF",

  BJ: "XOF",

  BT: "BTN",

  JM: "JMD",

  BV: "NOK",

  BW: "BWP",

  WS: "WST",

  BQ: "USD",

  BR: "BRL",

  BS: "BSD",

  JE: "GBP",

  BY: "BYR",

  BZ: "BZD",

  RU: "RUB",

  RW: "RWF",

  RS: "RSD",

  TL: "USD",

  RE: "EUR",

  TM: "TMT",

  TJ: "TJS",

  RO: "RON",

  TK: "NZD",

  GW: "XOF",

  GU: "USD",

  GT: "GTQ",

  GS: "GBP",

  GR: "EUR",

  GQ: "XAF",

  GP: "EUR",

  JP: "JPY",

  GY: "GYD",

  GG: "GBP",

  GF: "EUR",

  GE: "GEL",

  GD: "XCD",

  GB: "GBP",

  GA: "XAF",

  SV: "USD",

  GN: "GNF",

  GM: "GMD",

  GL: "DKK",

  GI: "GIP",

  GH: "GHS",

  OM: "OMR",

  TN: "TND",

  JO: "JOD",

  HR: "HRK",

  HT: "HTG",

  HU: "HUF",

  HK: "HKD",

  HN: "HNL",

  HM: "AUD",

  VE: "VEF",

  PR: "USD",

  PS: "ILS",

  PW: "USD",

  PT: "EUR",

  SJ: "NOK",

  PY: "PYG",

  IQ: "IQD",

  PA: "PAB",

  PF: "XPF",

  PG: "PGK",

  PE: "PEN",

  PK: "PKR",

  PH: "PHP",

  PN: "NZD",

  PL: "PLN",

  PM: "EUR",

  ZM: "ZMK",

  EH: "MAD",

  EE: "EUR",

  EG: "EGP",

  ZA: "ZAR",

  EC: "USD",

  IT: "EUR",

  VN: "VND",

  SB: "SBD",

  ET: "ETB",

  SO: "SOS",

  ZW: "ZWL",

  SA: "SAR",

  ES: "EUR",

  ER: "ERN",

  ME: "EUR",

  MD: "MDL",

  MG: "MGA",

  MF: "EUR",

  MA: "MAD",

  MC: "EUR",

  UZ: "UZS",

  MM: "MMK",

  ML: "XOF",

  MO: "MOP",

  MN: "MNT",

  MH: "USD",

  MK: "MKD",

  MU: "MUR",

  MT: "EUR",

  MW: "MWK",

  MV: "MVR",

  MQ: "EUR",

  MP: "USD",

  MS: "XCD",

  MR: "MRO",

  IM: "GBP",

  UG: "UGX",

  TZ: "TZS",

  MY: "MYR",

  MX: "MXN",

  IL: "ILS",

  FR: "EUR",

  IO: "USD",

  SH: "SHP",

  FI: "EUR",

  FJ: "FJD",

  FK: "FKP",

  FM: "USD",

  FO: "DKK",

  NI: "NIO",

  NL: "EUR",

  NO: "NOK",

  NA: "NAD",

  VU: "VUV",

  NC: "XPF",

  NE: "XOF",

  NF: "AUD",

  NG: "NGN",

  NZ: "NZD",

  NP: "NPR",

  NR: "AUD",

  NU: "NZD",

  CK: "NZD",

  XK: "EUR",

  CI: "XOF",

  CH: "CHF",

  CO: "COP",

  CN: "CNY",

  CM: "XAF",

  CL: "CLP",

  CC: "AUD",

  CA: "CAD",

  CG: "XAF",

  CF: "XAF",

  CD: "CDF",

  CZ: "CZK",

  CY: "EUR",

  CX: "AUD",

  CR: "CRC",

  CW: "ANG",

  CV: "CVE",

  CU: "CUP",

  SZ: "SZL",

  SY: "SYP",

  SX: "ANG",

  KG: "KGS",

  KE: "KES",

  SS: "SSP",

  SR: "SRD",

  KI: "AUD",

  KH: "KHR",

  KN: "XCD",

  KM: "KMF",

  ST: "STD",

  SK: "EUR",

  KR: "KRW",

  SI: "EUR",

  KP: "KPW",

  KW: "KWD",

  SN: "XOF",

  SM: "EUR",

  SL: "SLL",

  SC: "SCR",

  KZ: "KZT",

  KY: "KYD",

  SG: "SGD",

  SE: "SEK",

  SD: "SDG",

  DO: "DOP",

  DM: "XCD",

  DJ: "DJF",

  DK: "DKK",

  VG: "USD",

  DE: "EUR",

  YE: "YER",

  DZ: "DZD",

  US: "USD",

  UY: "UYU",

  YT: "EUR",

  UM: "USD",

  LB: "LBP",

  LC: "XCD",

  LA: "LAK",

  TV: "AUD",

  TW: "TWD",

  TT: "TTD",

  TR: "TRY",

  LK: "LKR",

  LI: "CHF",

  LV: "EUR",

  TO: "TOP",

  LT: "LTL",

  LU: "EUR",

  LR: "LRD",

  LS: "LSL",

  TH: "THB",

  TF: "EUR",

  TG: "XOF",

  TD: "XAF",

  TC: "USD",

  LY: "LYD",

  VA: "EUR",

  VC: "XCD",

  AE: "AED",

  AD: "EUR",

  AG: "XCD",

  AF: "AFN",

  AI: "XCD",

  VI: "USD",

  IS: "ISK",

  IR: "IRR",

  AM: "AMD",

  AL: "ALL",

  AO: "AOA",

  AQ: "",

  AS: "USD",

  AR: "ARS",

  AU: "AUD",

  AT: "EUR",

  AW: "AWG",

  IN: "INR",

  AX: "EUR",

  AZ: "AZN",

  IE: "EUR",

  ID: "IDR",

  UA: "UAH",

  QA: "QAR",

  MZ: "MZN"

};