insight-api-alterdot/lib/currency.js

Alterdot blockchain REST and WebSocket API Service

'use strict';

var request = require('request');

function CurrencyController(options) {
  this.node = options.node;
  var refresh = options.currencyRefresh || CurrencyController.DEFAULT_CURRENCY_DELAY;
  this.currencyDelay = refresh * 60000;
  this.exchange_rates = {
    alterdot_usd: 0.00,
    btc_usd: 0.00,
    btc_alterdot: 0.00
  };
  this.timestamp = Date.now();
}

CurrencyController.DEFAULT_CURRENCY_DELAY = 10;

CurrencyController.prototype.index = function(req, res) {
  var self = this;
  var currentTime = Date.now();
  if (self.exchange_rates.alterdot_usd === 0.00 || currentTime >= (self.timestamp + self.currencyDelay)) {
    self.timestamp = currentTime;
    request('https://api.coinpaprika.com/v1/coins/adot-alterdot/ohlcv/latest', function(err, response, body) {
      if (err) {
        self.node.log.error(err);
      }
      if (!err && response.statusCode === 200) {
        var response = JSON.parse(body);
        self.exchange_rates.bitstamp = response[0].close; // backwards compatibility
      }
      res.jsonp({
        status: 200,
        data: self.exchange_rates
      });
    });
  } else {
    res.jsonp({
      status: 200,
      data: self.exchange_rates
    });
  }

};

module.exports = CurrencyController;