openexchangerates-api

openexchangerates-api

Yet another Node.js module to work with Open Exchange Rates API.

Why?

Existing implementations do not allow running of multiple client instances simultaneously. Also I added debugging output thanks to debug. And extended Error object (RatesApiError) is helpful when you get into trouble.

Install

npm install openexchangerates-api --save

Example

'use strict';

var RatesApi = require('openexchangerates-api');
var client = new RatesApi({
  appId: 'YOUR_APP_ID'
});


client.currencies(function handleCurrencies(err, data) {
  if (err) {
    throw err;
  }
  else {
    console.dir(data);
  }
});

client.latest({base: 'EUR'}, function handleLatest(err, data) {
  if (err) {
    throw err;
  }
  else {
    console.dir(data);
  }
});

client.historical(new Date(2014, 0, 1), function handleHistorical(err, data) {
  if (err) {
    throw err;
  }
  else {
    console.dir(data);
  }
});

var start = new Date(2014, 11, 1);
var end = new Date(2014, 11, 10);
var options = {symbols: 'USD,EUR,RUB'};

client.timeSeries(start, end, options, function handleTimeSeries(err, data) {
  if (err) {
    throw err;
  }
  else {
    console.dir(data);
  }
});

client.convert(100, 'EUR', 'USD', function handleResult(err, data) {
  if (err) {
    throw err;
  }
  else {
    console.dir(data);
  }
});

API

RatesApi

RatesApi(options)

Instantiate API client.

Arguments

• options object - Client options
  • appId string - Application ID. Mandatory if you want not only currencies.json.
  • ssl boolean - Use HTTPS instead of HTTP. Defaults to true
  • apiBase string - API base URL. Usually no need to change it
  • request object - Additional parameters for request module. Read more here

void convert(value, from, to, [qs], callback)

Single-Currency Conversion API call.

Arguments

• value number - Amount in source currency
• from string - Source currency 3-letter code
• to string - Result currency 3-letter code
• qs object - Additional query string options
  • prettyprint number - If you want pretty JSON, set it to 1
• callback function - Callback function which accepts (err, responseData)

void currencies(callback)

Currencies request. For this you do not need options.appId.

Arguments

• callback function - Callback function which accepts (err, responseData)

void historical(date, [qs], callback)

Historical Data call.

Arguments

• date Date - Date for which you request rates
• qs object - Additional query string options
  • base string - Base currency code. USD by default
  • symbols|currencies string - Comma-separated list of currencies to return
• callback function - Callback function which accepts (err, responseData)

void latest([qs], callback)

Latest Data call.

Arguments

• qs object - Additional query string options
  • base string - Base currency code. USD by default
  • symbols|currencies string - Comma-separated list of currencies to return
• callback function - Callback function which accepts (err, responseData)

void timeSeries(start, end, [qs], callback)

Time-Series / Bulk Download call.

Arguments

• start Date - Start date
• end Date - End date
• qs object - Additional query string options
  • base string - Base currency code. USD by default
  • symbols|currencies string - Comma-separated list of currencies to return
  • prettyprint number - If you want pretty JSON, set it to 1
• callback function - Callback function which accepts (err, responseData)

RatesApiError

This Error class handles error responses.

string errno

Equals to errResponse.message. Error code.

string status

string statusCode

Equals to errResponse.status. HTTP status code of call.

string message

Equals to errResponse.description.

Roadmap

• Create high-level wrapper over query results

License

The MIT License (MIT)

Copyright (c) 2014 Alexander Makarenko

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.