hotfix in oauth login

app/controllers/v1/omniauth_callbacks_controller.rb

@@ -77,13 +77,23 @@ require 'open-uri'
 
     # break out provider attribute assignment for easy method extension
     def assign_provider_attrs(user, auth_hash)
-      avatar = auth_hash['provider']=='google_oauth2' ? open(auth_hash['info']['image'])  : auth_hash['info']['image']
+
+      email = auth_hash['info']['email']
+      avatar = auth_hash['info']['image']
+
+      # Duplicate emails when logging via facebook and google cause API to crash
+      # Add +google_oauth2 to google logins to avoid duplication (workaround!!)
+      # Google ignore strings after '+' until '@gmail.com' (wow!!!)
+      if auth_hash['provider']=='google_oauth2'
+        email = auth_hash['info']['email'].split('@')[0] + '+' + auth_hash['provider'] + '@' + auth_hash['info']['email'].split('@')[1]
+        avatar = open(auth_hash['info']['image'])
+      end
 
       user.assign_attributes({
         nickname: auth_hash['info']['nickname'],
         name:     auth_hash['info']['name'],
         avatar:   avatar,
-        email:    auth_hash['info']['email'] + auth_hash['provider']
+        email:    email
       })
     end