/*
 * 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.settingslib.bluetooth;

import static com.google.common.truth.Truth.assertThat;

import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import android.content.Context;
import android.media.AudioAttributes;
import android.media.AudioDeviceAttributes;
import android.media.AudioDeviceInfo;
import android.media.AudioManager;
import android.media.audiopolicy.AudioProductStrategy;

import androidx.test.core.app.ApplicationProvider;

import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.Spy;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;
import org.robolectric.RobolectricTestRunner;

import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

/** Tests for {@link HearingAidAudioRoutingHelper}. */
@RunWith(RobolectricTestRunner.class)
public class HearingAidAudioRoutingHelperTest {

    @Rule
    public MockitoRule mMockitoRule = MockitoJUnit.rule();

    @Spy
    private final Context mContext = ApplicationProvider.getApplicationContext();
    private static final String TEST_DEVICE_ADDRESS = "00:A1:A1:A1:A1:A1";
    private static final String NOT_EXPECT_DEVICE_ADDRESS = "11:B2:B2:B2:B2:B2";

    @Mock
    private AudioProductStrategy mAudioStrategy;
    @Spy
    private AudioManager mAudioManager = mContext.getSystemService(AudioManager.class);
    @Mock
    private AudioDeviceInfo mAudioDeviceInfo;
    @Mock
    private CachedBluetoothDevice mCachedBluetoothDevice;
    @Mock
    private CachedBluetoothDevice mSubCachedBluetoothDevice;
    private AudioDeviceAttributes mHearingDeviceAttribute;
    private HearingAidAudioRoutingHelper mHelper;

    @Before
    public void setUp() {
        doReturn(mAudioManager).when(mContext).getSystemService(AudioManager.class);
        when(mAudioDeviceInfo.getType()).thenReturn(AudioDeviceInfo.TYPE_HEARING_AID);
        when(mAudioDeviceInfo.getAddress()).thenReturn(TEST_DEVICE_ADDRESS);
        when(mAudioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)).thenReturn(
                new AudioDeviceInfo[]{mAudioDeviceInfo});
        doReturn(Collections.emptyList()).when(mAudioManager).getPreferredDevicesForStrategy(
                any(AudioProductStrategy.class));
        when(mAudioStrategy.getAudioAttributesForLegacyStreamType(
                AudioManager.STREAM_MUSIC))
                .thenReturn((new AudioAttributes.Builder()).build());

        mHearingDeviceAttribute = new AudioDeviceAttributes(
                AudioDeviceAttributes.ROLE_OUTPUT,
                AudioDeviceInfo.TYPE_HEARING_AID,
                TEST_DEVICE_ADDRESS);
        mHelper = spy(new HearingAidAudioRoutingHelper(mContext));
        doReturn(List.of(mAudioStrategy)).when(mHelper).getAudioProductStrategies();
    }

    @Test
    public void setPreferredDeviceRoutingStrategies_hadValueThenValueAuto_callRemoveStrategy() {
        when(mAudioManager.getPreferredDeviceForStrategy(mAudioStrategy)).thenReturn(
                mHearingDeviceAttribute);

        mHelper.setPreferredDeviceRoutingStrategies(List.of(mAudioStrategy),
                mHearingDeviceAttribute,
                HearingAidAudioRoutingConstants.RoutingValue.AUTO);

        verify(mAudioManager, atLeastOnce()).removePreferredDeviceForStrategy(mAudioStrategy);
    }

    @Test
    public void setPreferredDeviceRoutingStrategies_NoValueThenValueAuto_notCallRemoveStrategy() {
        when(mAudioManager.getPreferredDeviceForStrategy(mAudioStrategy)).thenReturn(null);

        mHelper.setPreferredDeviceRoutingStrategies(List.of(mAudioStrategy),
                mHearingDeviceAttribute,
                HearingAidAudioRoutingConstants.RoutingValue.AUTO);

        verify(mAudioManager, never()).removePreferredDeviceForStrategy(mAudioStrategy);
    }

    @Test
    public void setPreferredDeviceRoutingStrategies_valueHearingDevice_callSetStrategy() {
        mHelper.setPreferredDeviceRoutingStrategies(List.of(mAudioStrategy),
                mHearingDeviceAttribute,
                HearingAidAudioRoutingConstants.RoutingValue.HEARING_DEVICE);

        verify(mAudioManager, atLeastOnce()).setPreferredDeviceForStrategy(mAudioStrategy,
                mHearingDeviceAttribute);
    }

    @Test
    public void setPreferredDeviceRoutingStrategies_valueDeviceSpeaker_callSetStrategy() {
        final AudioDeviceAttributes speakerDevice = new AudioDeviceAttributes(
                AudioDeviceAttributes.ROLE_OUTPUT, AudioDeviceInfo.TYPE_BUILTIN_SPEAKER, "");
        mHelper.setPreferredDeviceRoutingStrategies(List.of(mAudioStrategy),
                mHearingDeviceAttribute,
                HearingAidAudioRoutingConstants.RoutingValue.DEVICE_SPEAKER);

        verify(mAudioManager, atLeastOnce()).setPreferredDeviceForStrategy(mAudioStrategy,
                speakerDevice);
    }

    @Test
    public void getMatchedHearingDeviceAttributes_mainHearingDevice_equalAddress() {
        when(mCachedBluetoothDevice.isHearingAidDevice()).thenReturn(true);
        when(mCachedBluetoothDevice.getAddress()).thenReturn(TEST_DEVICE_ADDRESS);

        final String targetAddress = mHelper.getMatchedHearingDeviceAttributes(
                mCachedBluetoothDevice).getAddress();

        assertThat(targetAddress).isEqualTo(mHearingDeviceAttribute.getAddress());
    }

    @Test
    public void getMatchedHearingDeviceAttributes_subHearingDevice_equalAddress() {
        when(mCachedBluetoothDevice.isHearingAidDevice()).thenReturn(true);
        when(mCachedBluetoothDevice.getAddress()).thenReturn(NOT_EXPECT_DEVICE_ADDRESS);
        when(mCachedBluetoothDevice.getSubDevice()).thenReturn(mSubCachedBluetoothDevice);
        when(mSubCachedBluetoothDevice.isHearingAidDevice()).thenReturn(true);
        when(mSubCachedBluetoothDevice.getAddress()).thenReturn(TEST_DEVICE_ADDRESS);

        final String targetAddress = mHelper.getMatchedHearingDeviceAttributes(
                mCachedBluetoothDevice).getAddress();

        assertThat(targetAddress).isEqualTo(mHearingDeviceAttribute.getAddress());
    }

    @Test
    public void getMatchedHearingDeviceAttributes_memberHearingDevice_equalAddress() {
        when(mSubCachedBluetoothDevice.isHearingAidDevice()).thenReturn(true);
        when(mSubCachedBluetoothDevice.getAddress()).thenReturn(TEST_DEVICE_ADDRESS);
        final Set<CachedBluetoothDevice> memberDevices = new HashSet<CachedBluetoothDevice>();
        memberDevices.add(mSubCachedBluetoothDevice);
        when(mCachedBluetoothDevice.isHearingAidDevice()).thenReturn(true);
        when(mCachedBluetoothDevice.getAddress()).thenReturn(NOT_EXPECT_DEVICE_ADDRESS);
        when(mCachedBluetoothDevice.getMemberDevice()).thenReturn(memberDevices);

        final String targetAddress = mHelper.getMatchedHearingDeviceAttributes(
                mCachedBluetoothDevice).getAddress();

        assertThat(targetAddress).isEqualTo(mHearingDeviceAttribute.getAddress());
    }
}