OpenTracks/src/main/java/de/dennisguse/opentracks/AbstractTrackDeleteActivity.java

/*
 * Copyright 2012 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package de.dennisguse.opentracks;

import android.widget.Toast;

import androidx.work.Data;
import androidx.work.OneTimeWorkRequest;
import androidx.work.WorkManager;
import androidx.work.WorkRequest;

import java.util.Arrays;
import java.util.List;

import de.dennisguse.opentracks.data.models.Track;
import de.dennisguse.opentracks.services.TrackDeletionWorker;
import de.dennisguse.opentracks.ui.aggregatedStatistics.ConfirmDeleteDialogFragment;
import de.dennisguse.opentracks.ui.aggregatedStatistics.ConfirmDeleteDialogFragment.ConfirmDeleteCaller;

/**
 * An abstract class for the following common tasks across
 * {@link TrackListActivity} and {@link TrackRecordedActivity}:
 * <p>
 * - delete tracks <br>
 *
 * @author Jimmy Shih
 */
//TODO Check if this class is still such a good idea; inheritance might limit maintainability
public abstract class AbstractTrackDeleteActivity extends AbstractActivity implements ConfirmDeleteCaller {

    protected void deleteTracks(Track.Id... trackIds) {
        ConfirmDeleteDialogFragment.showDialog(getSupportFragmentManager(), trackIds);
    }

    //TODO A callback is better.
    @Override
    public void onConfirmDeleteDone(Track.Id... trackIds) {
        List<Track.Id> trackIdList = Arrays.stream(trackIds)
                .filter(trackId -> !trackId.equals(getRecordingTrackId())).toList();

        onDeleteConfirmed();

        if (trackIds.length > trackIdList.size()) {
            Toast.makeText(this, getString(R.string.track_delete_not_recording), Toast.LENGTH_LONG).show();
        }

        WorkManager workManager = WorkManager.getInstance(this);
        WorkRequest deleteRequest = new OneTimeWorkRequest.Builder(TrackDeletionWorker.class)
                .setInputData(new Data.Builder()
                        .putLongArray(TrackDeletionWorker.TRACKIDS_KEY, Arrays.stream(trackIds).mapToLong(Track.Id::id).toArray())
                        .build())
                .build();

        workManager
                .getWorkInfoByIdLiveData(deleteRequest.getId())
                .observe(this, workInfo -> {
                    if (workInfo != null) {
                        if (workInfo.getState().isFinished()) {
                            onDeleteFinished();
                        }
                    }
                });

        workManager.enqueue(deleteRequest);
    }

    protected abstract void onDeleteConfirmed();

    protected abstract void onDeleteFinished();

    protected abstract Track.Id getRecordingTrackId();
}