/*
 * 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 android.platform.test.rule;

import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;

import android.app.NotificationManager;
import android.platform.test.util.HealthTestingUtils;

import androidx.annotation.VisibleForTesting;

import org.junit.runner.Description;

/** This rule will cancel all the notifications. */
public class CancelNotificationRule extends TestWatcher {
    private static android.app.NotificationManager sNotificationManager =
            getInstrumentation().getTargetContext().getSystemService(NotificationManager.class);

    @Override
    protected void starting(Description description) {
        sNotificationManager.cancelAll();
        HealthTestingUtils.waitForCondition(
                () ->
                        "Notification count didn't become 0. It is currently equal to "
                                + getNotificationCount(),
                () -> getNotificationCount() == 0);
    }

    @VisibleForTesting
    void setNotificationManager(NotificationManager notificationManager) {
        sNotificationManager = notificationManager;
    }

    private static int getNotificationCount() {
        return sNotificationManager.getActiveNotifications().length;
    }
}