/*
 * Copyright (C) 2014 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.server.notification;

import static android.app.NotificationManager.IMPORTANCE_DEFAULT;
import static android.app.NotificationManager.IMPORTANCE_LOW;

import static junit.framework.TestCase.assertEquals;

import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Matchers.anyInt;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.ContentProvider;
import android.content.Context;
import android.content.IContentProvider;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import android.media.AudioAttributes;
import android.net.Uri;
import android.os.Build;
import android.os.UserHandle;
import android.provider.Settings.Secure;
import android.service.notification.StatusBarNotification;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;
import android.test.suitebuilder.annotation.SmallTest;
import android.testing.TestableContentResolver;

import com.android.server.UiServiceTestCase;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import java.util.ArrayList;

@SmallTest
@RunWith(AndroidJUnit4.class)
public class RankingHelperTest extends UiServiceTestCase {
    private static final String PKG = "com.android.server.notification";
    private static final int UID = 0;
    private static final UserHandle USER = UserHandle.of(0);
    private static final String UPDATED_PKG = "updatedPkg";
    private static final int UID2 = 1111;
    private static final String SYSTEM_PKG = "android";
    private static final int SYSTEM_UID= 1000;
    private static final UserHandle USER2 = UserHandle.of(10);
    private static final String TEST_CHANNEL_ID = "test_channel_id";
    private static final String TEST_AUTHORITY = "test";
    private static final Uri SOUND_URI =
            Uri.parse("content://" + TEST_AUTHORITY + "/internal/audio/media/10");
    private static final Uri CANONICAL_SOUND_URI =
            Uri.parse("content://" + TEST_AUTHORITY
                    + "/internal/audio/media/10?title=Test&canonical=1");

    @Mock NotificationUsageStats mUsageStats;
    @Mock RankingHandler mHandler;
    @Mock PackageManager mPm;
    @Mock IContentProvider mTestIContentProvider;
    @Mock Context mContext;
    @Mock ZenModeHelper mMockZenModeHelper;
    @Mock RankingConfig mConfig;

    private NotificationManager.Policy mTestNotificationPolicy;
    private Notification mNotiGroupGSortA;
    private Notification mNotiGroupGSortB;
    private Notification mNotiNoGroup;
    private Notification mNotiNoGroup2;
    private Notification mNotiNoGroupSortA;
    private NotificationRecord mRecordGroupGSortA;
    private NotificationRecord mRecordGroupGSortB;
    private NotificationRecord mRecordNoGroup;
    private NotificationRecord mRecordNoGroup2;
    private NotificationRecord mRecordNoGroupSortA;
    private RankingHelper mHelper;
    private AudioAttributes mAudioAttributes;

    @Before
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks(this);
        UserHandle user = UserHandle.ALL;

        final ApplicationInfo legacy = new ApplicationInfo();
        legacy.targetSdkVersion = Build.VERSION_CODES.N_MR1;
        final ApplicationInfo upgrade = new ApplicationInfo();
        upgrade.targetSdkVersion = Build.VERSION_CODES.O;
        when(mPm.getApplicationInfoAsUser(eq(PKG), anyInt(), anyInt())).thenReturn(legacy);
        when(mPm.getApplicationInfoAsUser(eq(UPDATED_PKG), anyInt(), anyInt())).thenReturn(upgrade);
        when(mPm.getApplicationInfoAsUser(eq(SYSTEM_PKG), anyInt(), anyInt())).thenReturn(upgrade);
        when(mPm.getPackageUidAsUser(eq(PKG), anyInt())).thenReturn(UID);
        when(mPm.getPackageUidAsUser(eq(UPDATED_PKG), anyInt())).thenReturn(UID2);
        when(mPm.getPackageUidAsUser(eq(SYSTEM_PKG), anyInt())).thenReturn(SYSTEM_UID);
        PackageInfo info = mock(PackageInfo.class);
        info.signatures = new Signature[] {mock(Signature.class)};
        when(mPm.getPackageInfoAsUser(eq(SYSTEM_PKG), anyInt(), anyInt())).thenReturn(info);
        when(mPm.getPackageInfoAsUser(eq(PKG), anyInt(), anyInt()))
                .thenReturn(mock(PackageInfo.class));
        when(mContext.getResources()).thenReturn(
                InstrumentationRegistry.getContext().getResources());
        when(mContext.getContentResolver()).thenReturn(
                InstrumentationRegistry.getContext().getContentResolver());
        when(mContext.getPackageManager()).thenReturn(mPm);
        when(mContext.getApplicationInfo()).thenReturn(legacy);
        TestableContentResolver contentResolver = getContext().getContentResolver();
        contentResolver.setFallbackToExisting(false);

        ContentProvider testContentProvider = mock(ContentProvider.class);
        when(testContentProvider.getIContentProvider()).thenReturn(mTestIContentProvider);
        contentResolver.addProvider(TEST_AUTHORITY, testContentProvider);

        when(mTestIContentProvider.canonicalize(any(), eq(SOUND_URI)))
                .thenReturn(CANONICAL_SOUND_URI);
        when(mTestIContentProvider.canonicalize(any(), eq(CANONICAL_SOUND_URI)))
                .thenReturn(CANONICAL_SOUND_URI);
        when(mTestIContentProvider.uncanonicalize(any(), eq(CANONICAL_SOUND_URI)))
                .thenReturn(SOUND_URI);

        mTestNotificationPolicy = new NotificationManager.Policy(0, 0, 0, 0,
                NotificationManager.Policy.STATE_CHANNELS_BYPASSING_DND);
        when(mMockZenModeHelper.getNotificationPolicy()).thenReturn(mTestNotificationPolicy);
        mHelper = new RankingHelper(getContext(), mHandler, mConfig, mMockZenModeHelper,
                mUsageStats, new String[] {ImportanceExtractor.class.getName()});

        mNotiGroupGSortA = new Notification.Builder(mContext, TEST_CHANNEL_ID)
                .setContentTitle("A")
                .setGroup("G")
                .setSortKey("A")
                .setWhen(1205)
                .build();
        mRecordGroupGSortA = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, null, 0, 0, mNotiGroupGSortA, user,
                null, System.currentTimeMillis()), getLowChannel());

        mNotiGroupGSortB = new Notification.Builder(mContext, TEST_CHANNEL_ID)
                .setContentTitle("B")
                .setGroup("G")
                .setSortKey("B")
                .setWhen(1200)
                .build();
        mRecordGroupGSortB = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, null, 0, 0, mNotiGroupGSortB, user,
                null, System.currentTimeMillis()), getLowChannel());

        mNotiNoGroup = new Notification.Builder(mContext, TEST_CHANNEL_ID)
                .setContentTitle("C")
                .setWhen(1201)
                .build();
        mRecordNoGroup = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, null, 0, 0, mNotiNoGroup, user,
                null, System.currentTimeMillis()), getLowChannel());

        mNotiNoGroup2 = new Notification.Builder(mContext, TEST_CHANNEL_ID)
                .setContentTitle("D")
                .setWhen(1202)
                .build();
        mRecordNoGroup2 = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, null, 0, 0, mNotiNoGroup2, user,
                null, System.currentTimeMillis()), getLowChannel());

        mNotiNoGroupSortA = new Notification.Builder(mContext, TEST_CHANNEL_ID)
                .setContentTitle("E")
                .setWhen(1201)
                .setSortKey("A")
                .build();
        mRecordNoGroupSortA = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, null, 0, 0, mNotiNoGroupSortA, user,
                null, System.currentTimeMillis()), getLowChannel());

        mAudioAttributes = new AudioAttributes.Builder()
                .setContentType(AudioAttributes.CONTENT_TYPE_UNKNOWN)
                .setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
                .setFlags(AudioAttributes.FLAG_AUDIBILITY_ENFORCED)
                .build();
    }

    private NotificationChannel getLowChannel() {
        return new NotificationChannel(NotificationChannel.DEFAULT_CHANNEL_ID, "name",
                IMPORTANCE_LOW);
    }

    private NotificationChannel getDefaultChannel() {
        return new NotificationChannel(NotificationChannel.DEFAULT_CHANNEL_ID, "name",
                IMPORTANCE_DEFAULT);
    }

    @Test
    public void testSortShouldRespectCritical() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(7);
        NotificationRecord critical = generateRecord(0);
        NotificationRecord critical_ish = generateRecord(1);
        NotificationRecord critical_notAtAll = generateRecord(100);

        notificationList.add(critical_ish);
        notificationList.add(mRecordGroupGSortA);
        notificationList.add(critical_notAtAll);
        notificationList.add(mRecordGroupGSortB);
        notificationList.add(mRecordNoGroup);
        notificationList.add(mRecordNoGroupSortA);
        notificationList.add(critical);
        mHelper.sort(notificationList);

        assertTrue(mHelper.indexOf(notificationList, critical) == 0);
        assertTrue(mHelper.indexOf(notificationList, critical_ish) == 1);
        assertTrue(mHelper.indexOf(notificationList, critical_notAtAll) == 6);
    }

    private NotificationRecord generateRecord(int criticality) {
        NotificationChannel channel = new NotificationChannel("a", "a", IMPORTANCE_LOW);
        final Notification.Builder builder = new Notification.Builder(getContext())
                .setContentTitle("foo")
                .setSmallIcon(android.R.drawable.sym_def_app_icon);
        Notification n = builder.build();
        StatusBarNotification sbn = new StatusBarNotification("", "", 0, "", 0,
                0, n, UserHandle.ALL, null, System.currentTimeMillis());
        NotificationRecord notificationRecord = new NotificationRecord(getContext(), sbn, channel);
        notificationRecord.setCriticality(criticality);
        return notificationRecord;
    }

    @Test
    public void testFindAfterRankingWithASplitGroup() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(4);
        notificationList.add(mRecordGroupGSortA);
        notificationList.add(mRecordGroupGSortB);
        notificationList.add(mRecordNoGroup);
        notificationList.add(mRecordNoGroupSortA);
        mHelper.sort(notificationList);
        assertTrue(mHelper.indexOf(notificationList, mRecordGroupGSortA) >= 0);
        assertTrue(mHelper.indexOf(notificationList, mRecordGroupGSortB) >= 0);
        assertTrue(mHelper.indexOf(notificationList, mRecordNoGroup) >= 0);
        assertTrue(mHelper.indexOf(notificationList, mRecordNoGroupSortA) >= 0);
    }

    @Test
    public void testSortShouldNotThrowWithPlainNotifications() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(2);
        notificationList.add(mRecordNoGroup);
        notificationList.add(mRecordNoGroup2);
        mHelper.sort(notificationList);
    }

    @Test
    public void testSortShouldNotThrowOneSorted() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(2);
        notificationList.add(mRecordNoGroup);
        notificationList.add(mRecordNoGroupSortA);
        mHelper.sort(notificationList);
    }

    @Test
    public void testSortShouldNotThrowOneNotification() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(1);
        notificationList.add(mRecordNoGroup);
        mHelper.sort(notificationList);
    }

    @Test
    public void testSortShouldNotThrowOneSortKey() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>(1);
        notificationList.add(mRecordGroupGSortB);
        mHelper.sort(notificationList);
    }

    @Test
    public void testSortShouldNotThrowOnEmptyList() throws Exception {
        ArrayList<NotificationRecord> notificationList = new ArrayList<NotificationRecord>();
        mHelper.sort(notificationList);
    }
    
    @Test
    public void testGroupNotifications_highestIsProxy() {
        ArrayList<NotificationRecord> notificationList = new ArrayList<>();
        // this should be the last in the list, except it's in a group with a high child
        Notification lowSummaryN = new Notification.Builder(mContext, "")
                .setGroup("group")
                .setGroupSummary(true)
                .build();
        NotificationRecord lowSummary = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, "summary", 0, 0, lowSummaryN, USER,
                null, System.currentTimeMillis()), getLowChannel());
        notificationList.add(lowSummary);

        Notification lowN = new Notification.Builder(mContext, "").build();
        NotificationRecord low = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, "low", 0, 0, lowN, USER,
                null, System.currentTimeMillis()), getLowChannel());
        low.setContactAffinity(0.5f);
        notificationList.add(low);

        Notification highChildN = new Notification.Builder(mContext, "")
                .setGroup("group")
                .setGroupSummary(false)
                .build();
        NotificationRecord highChild = new NotificationRecord(mContext, new StatusBarNotification(
                PKG, PKG, 1, "child", 0, 0, highChildN, USER,
                null, System.currentTimeMillis()), getDefaultChannel());
        notificationList.add(highChild);

        mHelper.sort(notificationList);

        assertEquals(lowSummary, notificationList.get(0));
        assertEquals(highChild, notificationList.get(1));
        assertEquals(low, notificationList.get(2));
    }
}