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/*
* Copyright (C) 2023 The Android Open Source Project
*
* 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 com.android.car.media;
import static androidx.car.app.mediaextensions.analytics.event.AnalyticsEvent.VIEW_ACTION_HIDE;
import static androidx.car.app.mediaextensions.analytics.event.AnalyticsEvent.VIEW_ACTION_MODE_NONE;
import static androidx.car.app.mediaextensions.analytics.event.AnalyticsEvent.VIEW_ACTION_MODE_SCROLL;
import static androidx.car.app.mediaextensions.analytics.event.AnalyticsEvent.VIEW_COMPONENT_BROWSE_LIST;
import static androidx.recyclerview.widget.RecyclerView.NO_POSITION;
import androidx.annotation.OptIn;
import androidx.car.app.mediaextensions.analytics.event.AnalyticsEvent;
import com.android.car.media.common.MediaItemMetadata;
import com.android.car.media.common.browse.MediaItemsRepository;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
/** Helpers for Analytics */
@OptIn(markerClass = androidx.car.app.annotations2.ExperimentalCarApi.class)
public class AnalyticsHelper {
/**
* Creates a sends a visible items event for the items that became visible and another event
* for the items that became hidden.
* @return the currently visible items.
*/
public static List<String> sendVisibleItemsInc(
MediaItemsRepository repo, MediaItemMetadata parentItem, List<String> prevItems,
List<MediaItemMetadata> items, int currFirst, int currLast, boolean fromScroll) {
//Handle empty list by hiding previous and returning empty.
if (items.isEmpty() && !prevItems.isEmpty()) {
repo.getAnalyticsManager().sendVisibleItemsEvents(
parentItem != null ? parentItem.getId() : null,
VIEW_COMPONENT_BROWSE_LIST, VIEW_ACTION_HIDE,
fromScroll ? VIEW_ACTION_MODE_SCROLL : VIEW_ACTION_MODE_NONE,
new ArrayList<>(prevItems));
return List.of();
}
//If for any reason there are no visible items or error state
// we have nothing to show, hide prev
if (currFirst == NO_POSITION
|| currLast == NO_POSITION
|| currLast > items.size()
|| items == null) {
if (!prevItems.isEmpty()) {
repo.getAnalyticsManager().sendVisibleItemsEvents(
parentItem != null ? parentItem.getId() : null,
VIEW_COMPONENT_BROWSE_LIST, VIEW_ACTION_HIDE,
fromScroll ? VIEW_ACTION_MODE_SCROLL : VIEW_ACTION_MODE_NONE,
new ArrayList<>(prevItems));
}
return List.of();
}
//Needed because wide search RV is sometimes given first and last swapped.
//TODO(b/309150765): remove when fixed.
int limitedMin = Math.min(currFirst, currLast + 1);
int limitedMax = Math.max(currFirst, currLast + 1);
List<String> currItemsSublist = items
.subList(limitedMin, Math.min(limitedMax, items.size()))
.stream()
.map(MediaItemMetadata::getId)
.collect(Collectors.toCollection(ArrayList::new));
List<String> delta = new ArrayList<>(prevItems);
List<String> deltaNew = new ArrayList<>(currItemsSublist);
currItemsSublist.forEach(delta::remove);
prevItems.forEach(deltaNew::remove);
if (!delta.isEmpty()) {
repo.getAnalyticsManager().sendVisibleItemsEvents(
parentItem != null ? parentItem.getId() : null,
VIEW_COMPONENT_BROWSE_LIST, VIEW_ACTION_HIDE,
fromScroll ? VIEW_ACTION_MODE_SCROLL : VIEW_ACTION_MODE_NONE,
new ArrayList<>(delta));
}
if (!deltaNew.isEmpty()) {
repo.getAnalyticsManager().sendVisibleItemsEvents(
parentItem != null ? parentItem.getId() : null,
VIEW_COMPONENT_BROWSE_LIST, AnalyticsEvent.VIEW_ACTION_SHOW,
fromScroll ? VIEW_ACTION_MODE_SCROLL : VIEW_ACTION_MODE_NONE,
new ArrayList<>(deltaNew));
}
return currItemsSublist;
}
}
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