/*
 * Copyright 2021 Google LLC
 *
 * 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
 *
 *     https://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 com.google.android.gnd.ui.home.featureselector;

import android.content.res.Resources;
import com.google.android.gnd.R;
import com.google.android.gnd.model.feature.Feature;
import com.google.android.gnd.ui.common.AbstractViewModel;
import com.google.android.gnd.ui.common.FeatureHelper;
import com.google.common.collect.ImmutableList;
import io.reactivex.Observable;
import io.reactivex.Single;
import io.reactivex.subjects.PublishSubject;
import javax.inject.Inject;

public class FeatureSelectorViewModel extends AbstractViewModel {

  private ImmutableList<Feature> features = ImmutableList.<Feature>builder().build();
  private final PublishSubject<Integer> selections = PublishSubject.create();
  private final Observable<Feature> selectedFeatures;
  private final FeatureHelper featureHelper;
  private final Resources resources;

  @Inject
  FeatureSelectorViewModel(FeatureHelper featureHelper, Resources resources) {
    this.selectedFeatures = selections.map(i -> this.features.get(i));
    this.featureHelper = featureHelper;
    this.resources = resources;
  }

  public void onFeatures(ImmutableList<Feature> features) {
    this.features = features;
  }

  public void selectFeature(int index) {
    selections.onNext(index);
  }

  public Observable<ImmutableList<Feature>> getFeatures() {
    return Single.just(features).toObservable();
  }

  public Observable<Feature> getFeatureSelections() {
    return selectedFeatures;
  }

  String getListItemText(Feature feature) {
    // TODO: Add icons and custom view layout for list items.
    return featureHelper.getFeatureType(feature)
        + "\n"
        + resources.getString(R.string.layer_label_format, feature.getLayer().getName());
  }
}

@@ -1037,16 +1037,44 @@
 ubject;%0A
+import java8.util.Optional;%0A
 import j
@@ -2210,19 +2210,25 @@
 .get
-FeatureType
+Label(Optional.of
 (fea
@@ -2232,16 +2232,17 @@
 feature)
+)
 %0A       

Use feature label in disambiguation dialog