Username need to support email formats

[jkoor]

Describe the solution you'd like

The username field does not support email formats. This may causes some problems when logging in using oAuth2:

1. Unable to match registered user. Only English and numeric usernames are supported for registration. But Google support use Blank Space on username.
2. When I changed username on Google or Github, Memos will create a new user to login. All data is missing!

Although email mapping is supported, the administrator always needs to be the first to register.So I can't match oauth user to administrator.

Type of feature

User Experience (UX)

Additional context

No response

[Samarthasbhat]

@jkoor I have signed in this Memo live demo website. And the username and password is already saved. I want to know how it works and there we need to add google account or github credentials for login/signup method.

[jkoor]

@jkoor I have signed in this Memo live demo website. And the username and password is already saved. I want to know how it works and there we need to add google account or github credentials for login/signup method.

Only Administrator can add google account or github credentials for login/signup method. If you are administrator, just search google oauth. You can find many guidance about it.