Document Viewmodel for MediaStore API

documentViewModel.kt

private val _imagesLiveData = MutableLiveData<MutableList<Three<Uri?, String?, Date>>>()
val imagesLiveData: LiveData<MutableList<Three<Uri?, String?, Date>>>
    get() = _imagesLiveData

private var start = 0
private var areAllLoaded = false

fun getImages(count: Int) {
    if (areAllLoaded)
        return
    viewModelScope.launch {
        val response = documentRepo.getImages(count, start)
        start = response.c
        areAllLoaded = response.b
        val data = response.a

        _imagesLiveData.postValue(data)
    }
}