@parity/shapeshift/lib/rpc.js

The Parity Promise-based library for interfacing with ShapeShift over HTTP

'use strict'; // Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.

// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with Parity.  If not, see <http://www.gnu.org/licenses/>.

var ENDPOINT = 'https://cors.shapeshift.io';

function call(method, options) {
  return fetch(ENDPOINT + '/' + method, options).
  then(function (response) {
    if (!response.ok) {
      throw new Error(response.statusText);
    }

    return response.json();
  }).
  then(function (result) {
    if (result.error) {
      throw new Error(result.error);
    }

    return result;
  });
}

module.exports = function (apiKey) {
  function get(method) {
    return call(method, {
      method: 'GET',
      headers: {
        'Accept': 'application/json' } });


  }

  function post(method, data) {
    var params = Object.assign({}, { apiKey: apiKey }, data);
    var body = JSON.stringify(params);

    return call(method, {
      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
        'Content-Length': body.length },

      body: body });

  }

  return {
    ENDPOINT: ENDPOINT,
    get: get,
    post: post };

};