Connect service to existing meteor account

client.js

var addUserService;

addUserService = function(service) {
    if (service === "email") {
        
    } else {
        switch (service) {
            case "facebook":
                return Facebook.requestCredential({
                    requestPermissions: ["email", "user_friends", "manage_notifications"]
                }, function(token) {
                    return Meteor.call("userAddOauthCredentials", token, Meteor.userId(), service, function(err, resp) {
                        if (err != null) {
                            return Meteor.userError.throwError(err.reason);
                        }
                    });
                });
            case "google":
                return Google.requestCredential({
                    requestPermissions: ["email", "https://www.googleapis.com/auth/calendar"],
                    requestOfflineToken: true
                }, function(token) {
                    return Meteor.call("userAddOauthCredentials", token, Meteor.userId(), service, function(err, resp) {
                        if (err != null) {
                            return Meteor.userError.throwError(err.reason);
                        }
                    });
                });
        }
    }
};

index.html

<div class="social"><a id="fb" data-service="facebook"><img src="/../facebook.png"></a></div>
<div class="social"><a id="go" data-service="google"><img src="/../googleplus.png"></a></div>

server.js

Accounts.onCreateUser(function(options, user) {
    var email, oldUser, service;
    /*
    user.groups = {
        created: "",
        invited:"",
        RSVP:{
            coming:"",
            notComing:"",
            noReplay:""
        }
    };
    */
    if (user.profile == null) {
        user.profile = options.profile
    }
    if (user.services != null) {
        service = _.keys(user.services)[0];
        email = user.services[service].email;
        if (email != null) {
            oldUser = Meteor.users.findOne({
                "emails.address": email
            });
            if (oldUser != null) {
                if (oldUser.services == null) {
                    oldUser.services = {};
                }
                if (service === "google" || service === "facebook") {
                    oldUser.services[service] = user.services[service];
                    Meteor.users.remove(oldUser._id);
                    user = oldUser;
                }
            } else {
                if (service === "google" || service === "facebook") {
                    if (user.services[service].email != null) {
                        user.emails = [
                            {
                                address: user.services[service].email,
                                verified: true
                            }
                        ];
                    } else {
                        throw new Meteor.Error(500, "" + service + " account has no email attached");
                    }
                    user.profile.name = user.services[service].name;
                }
            }
        }
    }
    return user;
});

userAddOauthCredentials: function(token, userId, service) {
    var data, oldUser, selector, updateSelector;
    switch (service) {
        case "facebook":
            data = Facebook.retrieveCredential(token).serviceData;
            break;
        case "google":
            data = Google.retrieveCredential(token).serviceData;
    }
    selector = "services." + service + ".id";
    oldUser = Meteor.users.findOne({
        selector: data.id
    });
    if (oldUser != null) {
        throw new Meteor.Error(500, ("This " + service + " account has already") + "been assigned to another user.");
    }
    updateSelector = "services." + service;
    Meteor.users.update(userId, {
        $set: {
            updateSelector: data
        }
    });
    if (!_.contains(Meteor.user().emails, data.email)) {
        return Meteor.users.update(userId, {
            $push: {
                "emails": {
                    address: data.email,
                    verified: true
                }
            }
        });
    }
}

trigger.js

"click a": function(e) {
	var service;
	e.preventDefault();
	service = $(event.target).data("service");
	return addUserService(service);
}