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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.DeckLog;
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.persistence.sync.adapters.db.util.WrappedLiveData;
import it.niedermann.nextcloud.deck.ui.MainViewModel;
import it.niedermann.nextcloud.deck.ui.branding.BrandedFragment;
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;
import static it.niedermann.nextcloud.deck.persistence.sync.adapters.db.util.LiveDataHelper.observeOnce;
public class StackFragment extends BrandedFragment implements DragAndDropTab<CardAdapter>, MoveCardListener {
private static final String KEY_STACK_ID = "stackId";
private FragmentStackBinding binding;
private SyncManager syncManager;
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 Bundle args = getArguments();
if (args == null || !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) {
binding = FragmentStackBinding.inflate(inflater, container, false);
activity = requireActivity();
final MainViewModel mainViewModel = new ViewModelProvider(activity).get(MainViewModel.class);
final FilterViewModel 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();
}
syncManager = new SyncManager(activity);
adapter = new CardAdapter(
requireContext(),
getChildFragmentManager(),
mainViewModel.getCurrentAccount(),
mainViewModel.getCurrentBoardLocalId(),
mainViewModel.getCurrentBoardRemoteId(),
stackId,
mainViewModel.currentBoardHasEditPermission(),
syncManager,
this,
(requireActivity() instanceof SelectCardListener) ? (SelectCardListener) requireActivity() : null);
binding.recyclerView.setAdapter(adapter);
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(() -> {
if (fullCards != null && fullCards.size() > 0) {
binding.emptyContentView.setVisibility(View.GONE);
adapter.setCardList(fullCards);
} else {
binding.emptyContentView.setVisibility(View.VISIBLE);
}
});
cardsLiveData = syncManager.getFullCardsForStack(mainViewModel.getCurrentAccount().getId(), stackId, filterViewModel.getFilterInformation().getValue());
cardsLiveData.observe(getViewLifecycleOwner(), cardsObserver);
filterViewModel.getFilterInformation().observe(getViewLifecycleOwner(), (filterInformation -> {
cardsLiveData.removeObserver(cardsObserver);
cardsLiveData = syncManager.getFullCardsForStack(mainViewModel.getCurrentAccount().getId(), stackId, filterInformation);
cardsLiveData.observe(getViewLifecycleOwner(), cardsObserver);
}));
return binding.getRoot();
}
@Nullable
@Override
public CardAdapter getAdapter() {
return adapter;
}
@Override
public RecyclerView getRecyclerView() {
return binding.recyclerView;
}
@Override
public void applyBrand(int mainColor) {
if (this.adapter != null) {
this.adapter.applyBrand(mainColor);
}
}
public static Fragment newInstance(long stackId) {
final Bundle args = new Bundle();
args.putLong(KEY_STACK_ID, stackId);
final StackFragment fragment = new StackFragment();
fragment.setArguments(args);
return fragment;
}
@Override
public void move(long originAccountId, long originCardLocalId, long targetAccountId, long targetBoardLocalId, long targetStackLocalId) {
WrappedLiveData<Void> liveData = syncManager.moveCard(originAccountId, originCardLocalId, targetAccountId, targetBoardLocalId, targetStackLocalId);
observeOnce(liveData, requireActivity(), (next) -> {
if (liveData.hasError()) {
ExceptionDialogFragment.newInstance(liveData.getError(), null).show(getChildFragmentManager(), ExceptionDialogFragment.class.getSimpleName());
} else {
DeckLog.log("Moved " + Card.class.getSimpleName() + " \"" + originCardLocalId + "\" to " + Stack.class.getSimpleName() + " \"" + targetStackLocalId + "\"");
}
});
}
}
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