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package it.niedermann.nextcloud.deck.ui.stack;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentActivity;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.RecyclerView;
import java.util.List;
import it.niedermann.android.crosstabdnd.DragAndDropTab;
import it.niedermann.nextcloud.deck.DeckApplication;
import it.niedermann.nextcloud.deck.DeckLog;
import it.niedermann.nextcloud.deck.api.IResponseCallback;
import it.niedermann.nextcloud.deck.databinding.FragmentStackBinding;
import it.niedermann.nextcloud.deck.model.Card;
import it.niedermann.nextcloud.deck.model.Stack;
import it.niedermann.nextcloud.deck.model.full.FullCard;
import it.niedermann.nextcloud.deck.persistence.sync.SyncManager;
import it.niedermann.nextcloud.deck.ui.MainViewModel;
import it.niedermann.nextcloud.deck.ui.card.CardAdapter;
import it.niedermann.nextcloud.deck.ui.card.SelectCardListener;
import it.niedermann.nextcloud.deck.ui.exception.ExceptionDialogFragment;
import it.niedermann.nextcloud.deck.ui.filter.FilterViewModel;
import it.niedermann.nextcloud.deck.ui.movecard.MoveCardListener;
public class StackFragment extends Fragment implements DragAndDropTab<CardAdapter>, MoveCardListener {
private static final String KEY_STACK_ID = "stackId";
private FragmentStackBinding binding;
private MainViewModel mainViewModel;
private FragmentActivity activity;
private OnScrollListener onScrollListener;
@Nullable
private CardAdapter adapter = null;
private LiveData<List<FullCard>> cardsLiveData;
private long stackId;
@Override
public void onAttach(@NonNull Context context) {
super.onAttach(context);
final var args = requireArguments();
if (!args.containsKey(KEY_STACK_ID)) {
throw new IllegalArgumentException(KEY_STACK_ID + " is required.");
}
stackId = args.getLong(KEY_STACK_ID);
if (context instanceof OnScrollListener) {
this.onScrollListener = (OnScrollListener) context;
}
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
activity = requireActivity();
binding = FragmentStackBinding.inflate(inflater, container, false);
mainViewModel = new ViewModelProvider(activity).get(MainViewModel.class);
final var filterViewModel = new ViewModelProvider(activity).get(FilterViewModel.class);
// This might be a zombie fragment with an empty MainViewModel after Android killed the activity (but not the fragment instance
// See https://github.com/stefan-niedermann/nextcloud-deck/issues/478
if (mainViewModel.getCurrentAccount() == null) {
DeckLog.logError(new IllegalStateException("Cannot populate " + StackFragment.class.getSimpleName() + " because mainViewModel.getCurrentAccount() is null"));
return binding.getRoot();
}
adapter = new CardAdapter(requireActivity(), getChildFragmentManager(), stackId, mainViewModel,
(requireActivity() instanceof SelectCardListener)
? (SelectCardListener) requireActivity()
: null);
binding.recyclerView.setAdapter(adapter);
binding.loadingSpinner.show();
if (onScrollListener != null) {
binding.recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
if (dy > 0)
onScrollListener.onScrollDown();
else if (dy < 0)
onScrollListener.onScrollUp();
}
});
}
if (!mainViewModel.currentBoardHasEditPermission()) {
binding.emptyContentView.hideDescription();
}
final Observer<List<FullCard>> cardsObserver = (fullCards) -> activity.runOnUiThread(() -> {
binding.loadingSpinner.hide();
if (fullCards != null && fullCards.size() > 0) {
binding.emptyContentView.setVisibility(View.GONE);
adapter.setCardList(fullCards);
} else {
binding.emptyContentView.setVisibility(View.VISIBLE);
}
});
cardsLiveData = mainViewModel.getFullCardsForStack(mainViewModel.getCurrentAccount().getId(), stackId, filterViewModel.getFilterInformation().getValue());
cardsLiveData.observe(getViewLifecycleOwner(), cardsObserver);
filterViewModel.getFilterInformation().observe(getViewLifecycleOwner(), (filterInformation -> {
cardsLiveData.removeObserver(cardsObserver);
cardsLiveData = mainViewModel.getFullCardsForStack(mainViewModel.getCurrentAccount().getId(), stackId, filterInformation);
cardsLiveData.observe(getViewLifecycleOwner(), cardsObserver);
}));
return binding.getRoot();
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
DeckApplication.readCurrentBoardColor().observe(getViewLifecycleOwner(), this::applyBrand);
}
@Nullable
@Override
public CardAdapter getAdapter() {
return adapter;
}
@Override
public RecyclerView getRecyclerView() {
return binding.recyclerView;
}
private void applyBrand(int mainColor) {
if (this.adapter != null) {
this.adapter.applyBrand(mainColor);
}
}
public static Fragment newInstance(long stackId) {
final var fragment = new StackFragment();
final var args = new Bundle();
args.putLong(KEY_STACK_ID, stackId);
fragment.setArguments(args);
return fragment;
}
@Override
public void move(long originAccountId, long originCardLocalId, long targetAccountId, long targetBoardLocalId, long targetStackLocalId) {
mainViewModel.moveCard(originAccountId, originCardLocalId, targetAccountId, targetBoardLocalId, targetStackLocalId, new IResponseCallback<Void>() {
@Override
public void onResponse(Void response) {
DeckLog.log("Moved", Card.class.getSimpleName(), originCardLocalId, "to", Stack.class.getSimpleName(), targetStackLocalId);
}
@Override
public void onError(Throwable throwable) {
IResponseCallback.super.onError(throwable);
if (!SyncManager.ignoreExceptionOnVoidError(throwable)) {
ExceptionDialogFragment.newInstance(throwable, null).show(getChildFragmentManager(), ExceptionDialogFragment.class.getSimpleName());
}
}
});
}
}
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