Adds support for multiple twitter auths options (parse-community#2256)

* Adds support for multiple twitter auths options

* Adds user test

spec/TwitterAuth.spec.js

@@ -0,0 +1,50 @@
+let twitter = require('../src/authDataManager/twitter');
+
+describe('Twitter Auth', () => {
+  it('should use the proper configuration', () => {
+    // Multiple options, consumer_key found
+    expect(twitter.handleMultipleConfigurations({
+      consumer_key: 'hello',
+    }, [{
+      consumer_key: 'hello'
+    }, {
+      consumer_key: 'world'
+    }]).consumer_key).toEqual('hello')
+
+    // Multiple options, consumer_key not found
+    expect(function(){ 
+      twitter.handleMultipleConfigurations({
+        consumer_key: 'some',
+      }, [{
+        consumer_key: 'hello'
+      }, {
+        consumer_key: 'world'
+      }]);
+    }).toThrow();
+
+    // Multiple options, consumer_key not found
+    expect(function(){ 
+      twitter.handleMultipleConfigurations({
+        auth_token: 'token',
+      }, [{
+        consumer_key: 'hello'
+      }, {
+        consumer_key: 'world'
+      }]);
+    }).toThrow();
+
+    // Single configuration and consumer_key set
+    expect(twitter.handleMultipleConfigurations({
+      consumer_key: 'hello',
+    }, {
+      consumer_key: 'hello'
+    }).consumer_key).toEqual('hello');
+
+    // General case, only 1 config, no consumer_key set
+    expect(twitter.handleMultipleConfigurations({
+      auth_token: 'token',
+    }, {
+      consumer_key: 'hello'
+    }).consumer_key).toEqual('hello');
+  });
+});

src/authDataManager/twitter.js

@@ -1,9 +1,11 @@
 // Helper functions for accessing the twitter API.
 var OAuth = require('./OAuth1Client');
 var Parse = require('parse/node').Parse;
+var logger = require('../logger').default;
 
 // Returns a promise that fulfills iff this user id is valid.
 function validateAuthData(authData, options) {
+  options = handleMultipleConfigurations(authData, options);
   var client = new OAuth(options);
   client.host = "api.twitter.com";
   client.auth_token = authData.auth_token;
@@ -24,7 +26,28 @@ function validateAppId() {
   return Promise.resolve();
 }
 
+function handleMultipleConfigurations(authData, options) {
+  if (Array.isArray(options)) {
+    let consumer_key = authData.consumer_key;
+    if (!consumer_key) {
+      logger.error('Twitter Auth', 'Multiple twitter configurations are available, by no consumer_key was sent by the client.');
+      throw new Parse.Error(Parse.Error.OBJECT_NOT_FOUND, 'Twitter auth is invalid for this user.');
+    }
+    options = options.filter((option) => {
+      return option.consumer_key == consumer_key;
+    });
+
+    if (options.length == 0) {
+      logger.error('Twitter Auth','Cannot find a configuration for the provided consumer_key');
+      throw new Parse.Error(Parse.Error.OBJECT_NOT_FOUND, 'Twitter auth is invalid for this user.');
+    }
+    options = options[0];
+  }
+  return options;
+}
+
 module.exports = {
-  validateAppId: validateAppId,
-  validateAuthData: validateAuthData
+  validateAppId,
+  validateAuthData,
+  handleMultipleConfigurations
 };