is there a way to authenticate user role in firebase storage rules? [duplicate]

Answer 1

As Frank van Puffelen pointed out in his comment:

function isAdminUser() {
    return request.auth.uid in {
        "yaddayaffffdayaddUserIDKey":"User Name1"
    };
}

service firebase.storage {
    match /b/<appName>.appspot.com/o {
        match /{allPaths=**} {
            allow read;
            allow write: if request.auth != null && isAdminUser();
        }
   }
}