SignUp(Credentials: SignInInterface) { var actionCodeSettings = {

// After email confirm, the user will be give the ability to go back
// to this page.
url: environment.hostName,
handleCodeInApp: false
};
this.authLoading$.next(true);
this.fireAuth.createUserWithEmailAndPassword(credentials.email, credentials.password)
.then((userCredentials) => {
this.authLoading$.next(false);
userCredentials.user?.sendEmailVerification(actionCodeSettings);
this.router.navigate(['/']);
})
.catch((err) => {
this._snackBar.open(err.message, "OK", { duration: 15000 });
this.authLoading$.next(false);
});
}

signIn(credentials: SignInInterface) {
this.authLoading$.next(true);
this.fireAuth.signInWithEmailAndPassword(credentials.email, credentials.password)
.then((userCredentials) => {
return userCredentials.user?.getIdTokenResult();
})
.then((token) => {
if (token && token.claims && token.claims.admin) {
this.authLoading$.next(false);
this.router.navigate(['/']);
} else {
this.fireAuth.signOut();
const message = "Не достаточно прав доступа."
this._snackBar.open(message, "OK", { duration: 15000 });
}
this.authLoading$.next(false);
})
.catch((err) => {
this._snackBar.open(err.message, "OK", { duration: 15000 });
this.authLoading$.next(false);
});

}

restorePassword(email: string) {
this.authLoading$.next(true);
var actionCodeSettings = {
// After password reset, the user will be give the ability to go back
// to this page.
url: environment.hostName,
handleCodeInApp: false
};
let message: string = "Писмо с инструкциями отослано на ваш имейл.";
this.fireAuth.sendPasswordResetEmail(email, actionCodeSettings).then(() => {
this._snackBar.open(message, "OK", { duration: 15000 });
this.authLoading$.next(false);
this.router.navigate(['/']);

}).catch(err => {
this._snackBar.open(err.message, "OK", { duration: 15000 });
this.authLoading$.next(false);
});
}

хммм ... Надо подумать .. Тяжело ( Но сам захотел попробовать реализовать) Да там все просто - чтобы админ мог делать некоторые действия - например удалять статьи и заходить в комнату админов