jwt-ajax.js

gistfile1.js

window.JwtAjax = window.JwtAjax || {

  /*
   * Utils..
   */
  getURLParameter: function(name) {
    return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search) ||
        [null, ''])[1].replace(/\+/g, '%20')) || null;
  },

  /*
   * These are useful even as inputs to a plain iron-ajax
   * ========================================================
   */

  /*
   * 
   */
  getHeaders: function() {
    // First see if there's a token in the query string (for override)
    var token = window.JwtAjax.getURLParameter('token');

    // Next see if there's one in an iron-meta tag
    if (!token) {
      token = document.createElement('iron-meta').byKey('jwt-token');
    }

    if (!token) {
      // TODO: Check session? Localstore?
      return {};
    }

    return {
      "Authorization": "Bearer: " + token
    }
  },

  getApiDomain: function() {
    // First see if there's a token in the query string (for override)
    var api = window.JwtAjax.getURLParameter('api');

    // Next see if there's one in an iron-meta tag
    if (!api) {
      api = document.createElement('iron-meta').byKey('api-domain');
    }

    // Finally return the default
    api = "https://hdvh2pvekj.execute-api.us-west-2.amazonaws.com/production/"

    return api;
  },

  /*
   * These are useful when creating ajax requests from js
   */

  post: function(path, body, params, cb) {
    return window.JwtAjax._req('POST', path, body, params, cb);
  },

  put: function(path, body, params, cb) {
    return window.JwtAjax._req('PUT', path, body, params, cb);
  },

  get: function(path, params, cb) {
    return window.JwtAjax._req('GET', path, undefined, params, cb);
  },

  _req: function(method, urlPath, body, params, cb) {
    var headers = window.JwtAjax.getHeaders();
    var apiDomain = window.JwtAjax.getHeaders();

    // Guarantee a trailing slash on the prefix    
    if (apiDomain[apiDomain.length - 1] != '/') apiDomain = apiDomain + '/';

    // Guarantee no starting slash on the sufix
    if (urlPath.length && (urlPath[0] == '/')) urlPath = urlPath.slice(1);

    var ia = document.createElement('iron-ajax');
    ia.url = apiDomain + urlPath;
    ia.method = method;
    ia.headers = headers;
    var self = this;

    if (body && (method == 'post')) {
      ia.handleAs = 'json';
      ia.headers['Content-Type'] = 'application/json'
      ia.body = JSON.stringify(body);
    }

    ia.addEventListener('response', function (resp) {
      if (resp && resp.detail && resp.detail.response) {
          var theResponse;
          if (typeof resp.detail.response == 'string') {
              try {
                  var r = JSON.parse(resp.detail.response);
                  theResponse = r;
              }
              catch (e) {
                  theResponse = resp.detail.response;
              }
          }
          else {
              theResponse = resp.detail.response;
          }
          if (theResponse.error) {
              self.showError(theResponse.msg || theResponse.message, theResponse.upgrade);
              cb(resp.detail.response);
          }
          else {
              cb(null, resp.detail.response);
          }
      }
      else {
        var res = { error: true, msg: "Could not post data" };
        self.showError(res.msg);
        cb(res);
      }
    });
    ia.addEventListener('error', function (resp) {
        var res = { error: true, msg: "Could not post data -- got error response." };
        self.showError(res.msg);
        cb(res);
    });
    ia.generateRequest();
  }  
}