adds npr one api module

lib/one.js

@@ -0,0 +1,66 @@
+/************************ DEPENDENCIES *****************************/
+var util = require('util'),
+    bunyan = require('bunyan'),
+    helpers = require('./helpers'),
+    swagger = require('swagger-client');
+
+var proto = One.prototype;
+exports = module.exports = One;
+
+/************************* CONSTRUCTOR ****************************/
+function One(config) {
+
+  if (! (this instanceof One))
+    return new One(config);
+
+  util._extend(this, config || {});
+
+  if(! this.credentials)
+    throw('Missing API credentials');
+
+  if(! this.log)
+    this.log = bunyan.createLogger({name: 'npr-one'});
+
+  this.credentials.grant_type = 'password';
+  this.getAccessToken = this.getAccessToken.bind(this);
+}
+
+/*************************** DEFAULTS *****************************/
+proto.credentials = false;
+proto.client = false;
+proto.swagger_url = 'https://api.npr.org/documentation/beryllium/api-docs';
+proto.log = false;
+
+proto.init = function() {
+
+  var self = this;
+
+  return new Promise(function(resolve, reject) {
+
+    self.client = new swagger({
+      url: self.swagger_url,
+      success: function() {
+        helpers.processSwagger(self);
+        resolve(self);
+      },
+      failure: function() {
+        reject('swagger init failed');
+      }
+    });
+
+  });
+
+};
+
+proto.getAccessToken = function() {
+
+  var self = this;
+
+  if(! this.access_token)
+    return this.authorization.createToken(this.credentials);
+
+  return new Promise(function(resolve, reject) {
+    resolve(self.access_token);
+  });
+
+};