const url = 'https://sandbox-api.coinmarketcap.com/v1/', api = 'a864de55-9192-45df-80eb-8e51164c54eb';

const rp = require('request-promise');

function koma(x) {
    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ".");
}

async function cari(x){
  const method = 'cryptocurrency/map'

  const requestOptions = {
    method: 'GET',
    uri: url + method,
    qs: {
      'symbol' : x
    },
    headers: {
      'X-CMC_PRO_API_KEY': api
    },
    json: true,
    gzip: true
  };

  return new rp(requestOptions)

  .then(response => {
      var isi = response.data;
      var idArr = isi[0],
      id = idArr.id;
      return id;
  })


}

function harga(c, n, x){
const method = 'tools/price-conversion'
var cur = x != null || x != undefined ? x : 'IDR'
const requestOptions = {
  method: 'GET',
  uri: url + method,
  qs: {
    'id' : c,
    'amount' : n,
    'convert' : x
  },
  headers: {
    'X-CMC_PRO_API_KEY': api
  },
  json: true,
  gzip: true
};

return new rp(requestOptions).then(response => {
    var isi = x == 'USD' ? response.data.quote.USD.price : response.data.quote.IDR.price,
        idr = Math.round(isi * 1)/1,
        harga = koma(idr),
        status = 'ok';
        return harga;

}).catch((err) => {
  var status = 'err';
  var msg = err.message;
  console.log(status, msg);
});

}

var coin = 'xlm',
    jumlah = '1000',
    currency = 'idr',
    currency = currency.toUpperCase(),
    coin = coin.toUpperCase();

var now = process.uptime();

//THIS, I want this become global variable, I tried declare but it doesnt work
cari(coin).then(function(id){
  harga(id, jumlah, currency).then(function(harga){
    var then = process.uptime(),
        lama = Math.round((then - now) * 100) / 100;
    console.log('Harga', jumlah, coin, 'adalah :', harga, currency,'\nDone in :', lama, 'sec.')
  })
})