Hi Jerry.
We have discussed similar issue here: https://getsatisfaction.com/apperyio/...
Unfortunatly you can not login to appery.io DB without password.
I can suggest you following solution:
1 Add to your users system colletion email column.
2 Login in oAuth with some email and recieve an oAuth token.(this part you have already done)
3 Search for the user with email from step 2. See details here: http://docs.appery.io/documentation/b...
4 If user not exists in users collection - you signup this user in appery.io db. As password you should use some predefined, only server code known strong string. See details here: http://docs.appery.io/documentation/b...
5 If user exists in the users collection. Verify the oAuth token if needed and login with password from step 4. See details here: http://docs.appery.io/documentation/b...
Note for steps 3, 4 and 5 you have to use server code. See more about it here: http://docs.appery.io/documentation/b...
That's all.
Regards.