fetch-ckan/lib/index.js

Fetch ckan api like data.gov

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.fetchRecords = exports.fetchApi = undefined;

var _stringify = require('babel-runtime/core-js/json/stringify');

var _stringify2 = _interopRequireDefault(_stringify);

var _objectWithoutProperties2 = require('babel-runtime/helpers/objectWithoutProperties');

var _objectWithoutProperties3 = _interopRequireDefault(_objectWithoutProperties2);

var _keys = require('babel-runtime/core-js/object/keys');

var _keys2 = _interopRequireDefault(_keys);

var _getIterator2 = require('babel-runtime/core-js/get-iterator');

var _getIterator3 = _interopRequireDefault(_getIterator2);

var _nodeFetch = require('node-fetch');

var _nodeFetch2 = _interopRequireDefault(_nodeFetch);

var _querystring = require('querystring');

var _querystring2 = _interopRequireDefault(_querystring);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var withoutUndefined = function withoutUndefined(obj) {
  var dest = {};
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = (0, _getIterator3.default)((0, _keys2.default)(obj)), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var key = _step.value;

      var val = obj[key];
      if (val !== undefined) {
        dest[key] = val;
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator.return) {
        _iterator.return();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return dest;
};

// http://docs.ckan.org/en/latest/maintaining/datastore.html
// https://inventory.data.gov/dataset/032e19b4-5a90-41dc-83ff-6e4cd234f565/resource/38625c3d-5388-4c16-a30f-d105432553a4?filters=OPEID%3A100200
var fetchApi = function fetchApi(endpoint, _ref) {
  var filters = _ref.filters;
  var rest = (0, _objectWithoutProperties3.default)(_ref, ['filters']);

  var query = withoutUndefined(rest);
  if (filters && (0, _keys2.default)(filters).length) {
    query.filters = (0, _stringify2.default)(filters);
  }

  var qs = _querystring2.default.stringify(query);

  return (0, _nodeFetch2.default)(endpoint + '?' + qs).then(function (res) {
    return res.json();
  });
};

var fetchRecords = function fetchRecords() {
  return fetchApi.apply(undefined, arguments).then(function (response) {
    return response.success ? response.result.records : [];
  });
};

exports.fetchApi = fetchApi;
exports.fetchRecords = fetchRecords;
exports.default = {
  fetchApi: fetchApi,
  fetchRecords: fetchRecords
};