TaskListViewModel.kt

internal class TaskListViewModel : ViewModel() {

    private val _state = MutableStateFlow<TaskListViewState>(TaskListViewState.Empty)

    val state: StateFlow<TaskListViewState>
        get() = _state

    fun loadTasks() = viewModelScope.launch {
        loadAllTasksUseCase().collect { tasks ->
            _state.value = if (tasks.isNotEmpty()) {
                TaskListViewState.Loaded(tasks)
            } else {
                TaskListViewState.Empty
            }
        }
}