gchallen / meteor-accounts-google-oauth

accounts-google-oauth

A login handler for clients wishing to use a platform's native google sdk for sign on. Removes the requirement of the browser. Use in combination with accounts-google or independently.

Configuration

The only change you'll have to make on the service is when you set your ServiceConfiguration. You'll have to add a validClientIds array. This is used because the client id may be different between your web app and your other clients (such as an iOS app). Here's an example:

/*
  Settings would look like this
  {
    "google": {
      "client_secret": "MY_WEB_APP_SECRET",
      "client_id": "MY_WEB_APP_CLIENT_ID",
      "validClientIds": [
        "MY_WEB_APP_CLIENT_ID",
        "MY_IOS_APP_CLIENT_ID"
      ]
    }
  }
*/
const settings = Meteor.settings.google;

if (settings) {
  ServiceConfiguration.configurations.remove({
    service: 'google'
  });

  ServiceConfiguration.configurations.insert({
    service: 'google',
    clientId: settings.client_id,
    secret: settings.client_secret,
    validClientIds: Meteor.settings.google.validClientIds
  });
}

Usage from Client

Call the login method from ddp client with the following parameters:

  { google: serviceData }

Where serviceData is the data returned by the sdk you are using for Google authentication.

Example: DDP.call('login', [{ google: serviceData }])

Usage with Full Meteor Client

If you have access to a full Meteor client implementation, possibly through something like meteor-client-bundler, then you'll want your client-side call to look something like this:

Accounts.callLoginMethod({
  methodArguments: [{ google: user }], 
  userCallback: error => {
    if (error) {
      console.debug(error)
    }   
  }   
})

See here for more information about this undocumented Meteor feature. The advantage is that this will set up your client-side authentication properly, so that (for example) Meteor.user() returns the current user correctly. Which is important if you are relying on that reactive data source to trigger other changes.