GRN2-213: Cleaned up omniauth user create (bigbluebutton#682)

* Fixed omniauth user create

* Added readonly exception

app/models/user.rb

@@ -55,14 +55,31 @@ class << self
     def from_omniauth(auth)
       # Provider is the customer name if in loadbalanced config mode
       provider = auth['provider'] == "bn_launcher" ? auth['info']['customer'] : auth['provider']
-      find_or_initialize_by(social_uid: auth['uid'], provider: provider).tap do |u|
-        u.name = auth_name(auth) unless u.name
-        u.username = auth_username(auth) unless u.username
-        u.email = auth_email(auth)
-        u.image = auth_image(auth)
-        u.email_verified = true
-        u.save!
+      u = find_by(social_uid: auth['uid'], provider: provider)
+
+      if ENV["MAINTENANCE_MODE"] == "readonly"
+        raise ActiveRecord::ReadOnlyRecord if u.nil?
+
+        return u
       end
+
+      return User.create(
+        name: auth_name(auth),
+        username: auth_username(auth),
+        email: auth_email(auth),
+        social_uid: auth['uid'],
+        provider: provider,
+        image: auth_image(auth),
+        email_verified: true
+      ) if u.nil?
+
+      u.name = auth_name(auth) unless u.name
+      u.username = auth_username(auth) unless u.username
+      u.email = auth_email(auth)
+      u.image = auth_image(auth)
+      u.email_verified = true
+      u.save!
+      u
     end
 
     private