tempo/app/src/main/java/com/cappielloantonio/play/viewmodel/DownloadViewModel.java

package com.cappielloantonio.play.viewmodel;

import android.app.Application;

import androidx.annotation.NonNull;
import androidx.lifecycle.AndroidViewModel;
import androidx.lifecycle.LifecycleOwner;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.MutableLiveData;

import com.cappielloantonio.play.repository.DownloadRepository;
import com.cappielloantonio.play.subsonic.models.Child;

import java.util.List;
import java.util.stream.Collectors;

public class DownloadViewModel extends AndroidViewModel {
    private static final String TAG = "HomeViewModel";

    private final DownloadRepository downloadRepository;

    private final MutableLiveData<List<Child>> downloadedTrackSample = new MutableLiveData<>(null);

    public DownloadViewModel(@NonNull Application application) {
        super(application);

        downloadRepository = new DownloadRepository();
    }

    public LiveData<List<Child>> getDownloadedTracks(LifecycleOwner owner) {
        downloadRepository.getLiveDownload().observe(owner, downloads -> downloadedTrackSample.postValue(downloads.stream().map(download -> (Child) download).collect(Collectors.toList())));
        return downloadedTrackSample;
    }
}