oAuth Configuration Pattern for Meteor

settings.json

{
  "private": {
    "oAuth": {
      "facebook": {
        "development": {
          "appId": "xxx",
          "secret": "xxx"
        },
        "staging": {
          "appId": "xxx",
          "secret": "xxx"
        },
        "production": {
          "appId": "xxx",
          "secret": "xxx"
        }
      },
      "github": {
        "development": {
          "clientId": "xxx",
          "secret": "xxx"
        },
        "staging": {
          "clientId": "xxx",
          "secret": "xxx"
        },
        "production": {
          "clientId": "xxx",
          "secret": "xxx"
        }
      },
      "google": {
        "development": {
          "clientId": "xxx",
          "secret": "xxx"
        },
        "staging": {
          "clientId": "xxx",
          "secret": "xxx"
        },
        "production": {
          "clientId": "xxx",
          "secret": "xxx"
        }
      }
    }
  }
}

startup-server.js

/*
* Service Configuration
* Configuration for third-party login services. 
* Note: customize the config object and switch below to include additional services.
*/

createServiceConfiguration = function(service, clientId, secret){
    ServiceConfiguration.configurations.remove({
      service: service
    });
    
    var config = {
      generic: {
        service: service,
        clientId: clientId,
        secret: secret
      },
      facebook: {
        service: service,
        appId: clientId,
        secret: secret
      }
    }
    
    switch (service) {
      case "facebook":
        ServiceConfiguration.configurations.insert(config.facebook);
        break;
      default:
        ServiceConfiguration.configurations.insert(config.generic);
        break;
    }
}
  
/*
* Configure oAuth
* This is done with a switch to test the current environment, loading the
* appropriate keys for each.
*/

// Get the current environment and get our oAuth keys from settings.json.
var environment = process.env.NODE_ENV;
var oAuth       = Meteor.settings.private.oAuth;

// Perform the switch and configure environment.
switch(environment){
  case "development":
    createServiceConfiguration('facebook', oAuth.facebook.development.appId, oAuth.facebook.development.secret);
    createServiceConfiguration('github', oAuth.github.development.clientId, oAuth.github.development.secret);
    createServiceConfiguration('google', oAuth.google.development.clientId, oAuth.google.development.secret);
    break;
  case "staging":
    createServiceConfiguration('facebook', oAuth.facebook.staging.appId, oAuth.facebook.staging.secret);
    createServiceConfiguration('github', oAuth.github.staging.clientId, oAuth.github.staging.secret);
    createServiceConfiguration('google', oAuth.google.staging.clientId, oAuth.google.staging.secret);
    break;
  case "production":
    createServiceConfiguration('facebook', oAuth.facebook.production.appId, oAuth.facebook.production.secret);
    createServiceConfiguration('github', oAuth.github.production.clientId, oAuth.github.production.secret);
    createServiceConfiguration('google', oAuth.google.production.clientId, oAuth.google.production.secret);
    break;
}