class MainViewModel(app: Application) : AndroidViewModel(app) {
  private val postRepo = getApplication<App>().postRepo //poor man DI :D
  private val LOAD_ITEM_COUNT = 15

  fun getPosts(): LiveData<List<Post>> {
    return postRepo.posts.map {
      Timber.d("have posts")
      it.map { Post(it.id, it.title, it.url) }
    }
  }

  fun refresh() {
    Timber.d("refresh")
    postRepo.load(LOAD_ITEM_COUNT)
  }

  fun loadMore() {
    Timber.d("loadmore")
    postRepo.loadMore(LOAD_ITEM_COUNT)
  }
}