Example of not handling interactions via ViewModel, part 4

ViewModel.kt

data class ModelData(
    val progressVisible: Boolean,
)

class ViewModel(
    private val repository: Repository,
    private val navigator: Navigator
) : ViewModel() {

    private val _liveData = MutableLiveData<ModelData>()
    val liveData: LiveData<ModelData> = _liveData

    private val observer: (RepositoryData) -> Unit = { repositoryData ->
        //map repository data to view model data
        //to siplify let's just change the progress visibility state
        _liveData.postValue(ModelData(progressVisible = false))
    }

    init {
        repository.observeChanges(observer)
    }

    fun onInteraction(interaction: Interaction) {
        when (interaction) {
            is Interaction.BackButtonClick -> onBackButtonClicked()
            is Interaction.SkipButtonClick -> onSkipButtonClicked()
            is Interaction.SaveButtonClick -> onSaveButtonClicked()
            is Interaction.NameChange -> onNameChanged(interaction.name)
        }
    }

    private fun onBackButtonClicked() {
        navigator.navigateBack()
    }

    private fun onSkipButtonClicked() {
        navigator.navigateForward()
    }

    private fun onSaveButtonClicked() {
        _liveData.postValue(ModelData(progressVisible = true) 
        repository.doSomethingAsync()
        //additional logic
        //update view state or let changes from repository to do it
    }

    private fun onNameChanged() {
        repository.saveName(name)
    }
}