Meteor.users generalized function extractProfile - Returns a basic user information object

meteor.extractProfile.model.js

//@Param userObjId - expects either user object or id
//
//Returns a basic user information object:
// ._id - the Meteor.users id
// .id  - service id
// .accessToken - service access token
// .serviceName - name of service eg. facebook, google etc.
// .email       - user email, not to be expected from twitter service
// .username    - profile username
// .twitterUsername - twitters @username
// 
// tested with facebook, twitter, google, password
// TODO: add picture / profile photo

var extractProfile = function (userObjId) {
  //Check if an _id isset otherwise assume input as being _id
  var user = (userObjId._id)?userObjId: Meteor.users.findOne({_id: userObjId});
  //setup full consistent object from user profile, save v8 mem mapping
  var result = {
    _id: (user._id)?(user._id):null, //if null then really no point in going on
    id: null,
    accessToken: null,
    serviceName: null,
    email: (user.emails && user.emails.length)?user.emails[0].address:null, //a bit off, should be placed in service->password->email?
    username: (user.username)?user.username:null,
    screenName: null, //@username - kinda off that twitter dont do email
  };
  result.username = (user.profile && user.profile.name)?user.profile.name:result.username;

  //Check if the user logged in via a service
  if (user.services) {
    //Iterate through services
    for (var serviceName in user.services) {
      var serviceObject = user.services[serviceName];
      //If an 'id' isset then assume valid service
      if (serviceObject.id) {
        //Merge result with service info
        result.id = serviceObject.id;
        result.email = (serviceObject.email) ? serviceObject.email : result.email;
        result.serviceName = serviceName;
        result.accessToken = (serviceObject.accessToken) ? serviceObject.accessToken : null;
        result.screenName = (serviceObject.screenName) ? serviceObject.screenName : null;
      } //EO serviceObject.id
    }  //EO for
  } //EO user.services
  return result;
}; //EO extractProfile

meteor.publish.users.server.js

  Meteor.publish("users", function () {
    return Meteor.users.find({}, {fields: {emails: true, username:true, profile: true, services: true}});
  });