login method
- User user
login a User by checking if he exists in the remote database
Implementation
Future<DisplayUser?> login(User user) async {
if (await isUserLoggedIn(user)) return this.user;
try {
final _user = await remote.login(user);
await _user!.store();
return this.user;
} catch (e) {
logout();
rethrow;
}
}