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package it.niedermann.nextcloud.deck.ui.attachments;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.SharedElementCallback;
import androidx.recyclerview.widget.RecyclerView;
import androidx.viewpager2.widget.ViewPager2;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import it.niedermann.nextcloud.deck.DeckLog;
import it.niedermann.nextcloud.deck.R;
import it.niedermann.nextcloud.deck.databinding.ActivityAttachmentsBinding;
import it.niedermann.nextcloud.deck.model.Account;
import it.niedermann.nextcloud.deck.model.Attachment;
import it.niedermann.nextcloud.deck.persistence.sync.SyncManager;
import it.niedermann.nextcloud.deck.ui.exception.ExceptionHandler;
import it.niedermann.nextcloud.deck.util.MimeTypeUtil;
public class AttachmentsActivity extends AppCompatActivity {
private static final String BUNDLE_KEY_ACCOUNT = "account";
private static final String BUNDLE_KEY_CARD_ID = "cardId";
private static final String BUNDLE_KEY_CURRENT_ATTACHMENT_LOCAL_ID = "currentAttachmenLocaltId";
private ActivityAttachmentsBinding binding;
private ViewPager2.OnPageChangeCallback onPageChangeCallback;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Thread.currentThread().setUncaughtExceptionHandler(new ExceptionHandler(this));
binding = ActivityAttachmentsBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
supportPostponeEnterTransition();
setSupportActionBar(binding.toolbar);
final Bundle args = getIntent().getExtras();
if (args == null || !args.containsKey(BUNDLE_KEY_ACCOUNT) || !args.containsKey(BUNDLE_KEY_CARD_ID)) {
throw new IllegalArgumentException("Provide at least " + BUNDLE_KEY_ACCOUNT + " and " + BUNDLE_KEY_CARD_ID);
}
final Account account = (Account) args.getSerializable(BUNDLE_KEY_ACCOUNT);
if (account == null) {
throw new IllegalArgumentException(BUNDLE_KEY_ACCOUNT + " must not be null.");
}
long cardId = args.getLong(BUNDLE_KEY_CARD_ID);
final SyncManager syncManager = new SyncManager(this);
syncManager.getCardByLocalId(account.getId(), cardId).observe(this, fullCard -> {
final List<Attachment> attachments = new ArrayList<>();
for (Attachment a : fullCard.getAttachments()) {
if (MimeTypeUtil.isImage(a.getMimetype())) {
attachments.add(a);
}
}
if (fullCard.getAttachments().size() == 0) {
DeckLog.logError(new IllegalStateException(AttachmentsActivity.class.getSimpleName() + " called, but card " + fullCard.getLocalId() + "has no attachments"));
supportFinishAfterTransition();
return;
}
binding.toolbar.setSubtitle(fullCard.getCard().getTitle());
onPageChangeCallback = new ViewPager2.OnPageChangeCallback() {
@Override
public void onPageSelected(int position) {
super.onPageSelected(position);
binding.toolbar.setTitle(attachments.get(position).getBasename());
}
};
RecyclerView.Adapter adapter = new AttachmentAdapter(account, fullCard.getId(), attachments);
binding.viewPager.setAdapter(adapter);
binding.viewPager.registerOnPageChangeCallback(onPageChangeCallback);
long currentAttachment = args.getLong(BUNDLE_KEY_CURRENT_ATTACHMENT_LOCAL_ID);
if (currentAttachment != 0L) {
for (int i = 0; i < attachments.size(); i++) {
if (attachments.get(i).getLocalId() == currentAttachment) {
binding.viewPager.setCurrentItem(i, false);
break;
}
}
}
// https://android-developers.googleblog.com/2018/02/continuous-shared-element-transitions.html?m=1
// https://github.com/android/animation-samples/blob/master/GridToPager/app/src/main/java/com/google/samples/gridtopager/fragment/ImagePagerFragment.java
setEnterSharedElementCallback(new SharedElementCallback() {
@Override
public void onMapSharedElements(List<String> names, Map<String, View> sharedElements) {
// TODO Fix shared elements mapping
// This does only show an animation if origin and current ViewPager item match
long currentAttachmentLocalId = attachments.get(binding.viewPager.getCurrentItem()).getLocalId();
String transitionKey = getString(R.string.transition_attachment_preview, String.valueOf(currentAttachmentLocalId));
if (transitionKey.equals(names.get(0))) {
sharedElements.put(transitionKey, binding.viewPager.getRootView().findViewById(R.id.preview)
);
}
// This will move the picture back to the origin, regardless where the ViewPager has been scrolled in the meantime
// sharedElements.put(names.get(0), binding.viewPager.getRootView().findViewById(R.id.preview));
}
});
});
}
@Override
public boolean onTouchEvent(MotionEvent event) {
supportFinishAfterTransition();
return true;
}
@Override
public boolean onSupportNavigateUp() {
supportFinishAfterTransition();
return true;
}
@Override
protected void onDestroy() {
binding.viewPager.unregisterOnPageChangeCallback(onPageChangeCallback);
super.onDestroy();
}
@NonNull
public static Intent createIntent(@NonNull Context context, @NonNull Account account, Long cardLocalId, Long attachmentLocalId) {
return new Intent(context, AttachmentsActivity.class)
.putExtra(BUNDLE_KEY_ACCOUNT, account)
.putExtra(BUNDLE_KEY_CARD_ID, cardLocalId)
.putExtra(BUNDLE_KEY_CURRENT_ATTACHMENT_LOCAL_ID, attachmentLocalId)
.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
}
}
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