UserDao

UserDato.kt

class UserDao {

    fun getUserName(userId:String): LiveData<Resource<String>> {
        var userName = MutableLiveData<Resource<String>>()
        FirebaseFirestore.getInstance()
            .collection("users")
            .document(userId)
            .get()
            .addOnSuccessListener {
                userName.value = Resource.success(it.getString("name"))

        }.addOnFailureListener {
                userName.value = Resource.error("Error",it.message!!)
        }

        return userName
    }
}