/*
 * Copyright (C) 2024 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.ondevicepersonalization.services.serviceflow;

import static com.android.ondevicepersonalization.services.FlagsConstants.KEY_SHARED_ISOLATED_PROCESS_FEATURE_ENABLED;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.doReturn;

import android.adservices.ondevicepersonalization.CalleeMetadata;
import android.adservices.ondevicepersonalization.Constants;
import android.adservices.ondevicepersonalization.RenderingConfig;
import android.adservices.ondevicepersonalization.RequestLogRecord;
import android.adservices.ondevicepersonalization.aidl.IRequestSurfacePackageCallback;
import android.content.ComponentName;
import android.content.ContentValues;
import android.content.Context;
import android.os.Binder;
import android.os.Bundle;
import android.view.SurfaceControlViewHost.SurfacePackage;

import androidx.test.core.app.ApplicationProvider;

import com.android.compatibility.common.util.ShellUtils;
import com.android.dx.mockito.inline.extended.ExtendedMockito;
import com.android.modules.utils.build.SdkLevel;
import com.android.modules.utils.testing.ExtendedMockitoRule;
import com.android.ondevicepersonalization.services.Flags;
import com.android.ondevicepersonalization.services.FlagsFactory;
import com.android.ondevicepersonalization.services.PhFlagsTestUtil;
import com.android.ondevicepersonalization.services.StableFlags;
import com.android.ondevicepersonalization.services.data.DbUtils;
import com.android.ondevicepersonalization.services.data.OnDevicePersonalizationDbHelper;
import com.android.ondevicepersonalization.services.data.events.EventsDao;
import com.android.ondevicepersonalization.services.data.events.Query;
import com.android.ondevicepersonalization.services.data.user.UserPrivacyStatus;
import com.android.ondevicepersonalization.services.request.SlotWrapper;
import com.android.ondevicepersonalization.services.util.CryptUtils;
import com.android.ondevicepersonalization.services.util.OnDevicePersonalizationFlatbufferUtils;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.mockito.Mock;
import org.mockito.quality.Strictness;

import java.util.ArrayList;
import java.util.concurrent.CountDownLatch;

@RunWith(JUnit4.class)
public class RenderFlowTest {

    private final Context mContext = ApplicationProvider.getApplicationContext();
    private final CountDownLatch mLatch = new CountDownLatch(1);
    private final OnDevicePersonalizationDbHelper mDbHelper =
            OnDevicePersonalizationDbHelper.getInstanceForTest(mContext);


    private boolean mCallbackSuccess;
    private boolean mCallbackError;
    private int mCallbackErrorCode;
    private int mIsolatedServiceErrorCode;
    private byte[] mSerializedException;
    private Bundle mCallbackResult;
    private ServiceFlowOrchestrator mSfo;

    @Mock UserPrivacyStatus mUserPrivacyStatus;
    @Mock CryptUtils mCryptUtils;
    private Flags mSpyFlags = new Flags() {
        int mIsolatedServiceDeadlineSeconds = 30;
        boolean mIsIsolatedServiceDebuggingEnabled = true;
        @Override public int getIsolatedServiceDeadlineSeconds() {
            return mIsolatedServiceDeadlineSeconds;
        }

        @Override
        public boolean isIsolatedServiceDebuggingEnabled() {
            return mIsIsolatedServiceDebuggingEnabled;
        }
    };

    @Rule
    public final ExtendedMockitoRule mExtendedMockitoRule = new ExtendedMockitoRule.Builder(this)
            .mockStatic(FlagsFactory.class)
            .spyStatic(StableFlags.class)
            .spyStatic(UserPrivacyStatus.class)
            .spyStatic(CryptUtils.class)
            .setStrictness(Strictness.LENIENT)
            .build();

    @Before
    public void setup() throws Exception {
        PhFlagsTestUtil.setUpDeviceConfigPermissions();
        ShellUtils.runShellCommand("settings put global hidden_api_policy 1");
        ExtendedMockito.doReturn(mSpyFlags).when(FlagsFactory::getFlags);
        ExtendedMockito.doReturn(SdkLevel.isAtLeastU()).when(
                () -> StableFlags.get(KEY_SHARED_ISOLATED_PROCESS_FEATURE_ENABLED));

        setUpTestDate();

        ExtendedMockito.doReturn(mUserPrivacyStatus).when(UserPrivacyStatus::getInstance);
        doReturn(true).when(mUserPrivacyStatus).isProtectedAudienceEnabled();

        mSfo = new ServiceFlowOrchestrator();
    }

    @After
    public void cleanup() {
        mDbHelper.getWritableDatabase().close();
        mDbHelper.getReadableDatabase().close();
        mDbHelper.close();
    }

    @Test
    public void testRenderFlow_TargetingControlRevoked() throws Exception {
        doReturn(false).when(mUserPrivacyStatus).isProtectedAudienceEnabled();

        mSfo.schedule(ServiceFlowType.RENDER_FLOW, "token", new Binder(), 0,
                100, 50, new TestRenderFlowCallback(), mContext, 100L, 110L);
        mLatch.await();

        assertTrue(mCallbackError);
        assertEquals(Constants.STATUS_PERSONALIZATION_DISABLED, mCallbackErrorCode);
    }

    @Test
    public void testRunRenderFlow_InvalidToken() throws Exception {
        mSfo.schedule(ServiceFlowType.RENDER_FLOW, "token", new Binder(), 0,
                100, 50, new TestRenderFlowCallback(), mContext, 100L, 110L);
        mLatch.await();

        assertTrue(mCallbackError);
        assertEquals(Constants.STATUS_INTERNAL_ERROR, mCallbackErrorCode);
    }

    @Test
    public void testRunRenderFlow_Success() throws Exception {
        ExtendedMockito.doReturn(
                        new SlotWrapper(
                                new RequestLogRecord.Builder()
                                        .build(),
                                new RenderingConfig.Builder()
                                        .addKey("bid1")
                                        .addKey("bid2")
                                        .build(),
                                mContext.getPackageName(), 0))
                .when(() -> CryptUtils.decrypt("token"));

        mSfo.schedule(ServiceFlowType.RENDER_FLOW, "token", new Binder(), 0,
                100, 50, new TestRenderFlowCallback(), mContext, 100L, 110L);
        mLatch.await();

        assertTrue(mCallbackSuccess);
    }

    private void setUpTestDate() {
        ArrayList<ContentValues> rows = new ArrayList<>();
        ContentValues row1 = new ContentValues();
        row1.put("a", 1);
        rows.add(row1);
        ContentValues row2 = new ContentValues();
        row2.put("b", 2);
        rows.add(row2);
        ComponentName service = new ComponentName(
                mContext.getPackageName(), "com.test.TestPersonalizationService");
        byte[] queryDataBytes = OnDevicePersonalizationFlatbufferUtils.createQueryData(
                DbUtils.toTableValue(service), "AABBCCDD", rows);
        EventsDao.getInstanceForTest(mContext).insertQuery(
                new Query.Builder(100L, "com.app", service, "AABBCCDD", queryDataBytes)
                .build());
        EventsDao.getInstanceForTest(mContext);
    }

    class TestRenderFlowCallback extends IRequestSurfacePackageCallback.Stub {
        @Override public void onSuccess(SurfacePackage surfacePackage,
                CalleeMetadata calleeMetadata) {
            mCallbackSuccess = true;
            mLatch.countDown();
        }
        @Override public void onError(
                int errorCode, int isolatedServiceErrorCode,
                byte[] serializedException,
                CalleeMetadata calleeMetadata) {
            mCallbackError = true;
            mCallbackErrorCode = errorCode;
            mIsolatedServiceErrorCode = isolatedServiceErrorCode;
            mSerializedException = serializedException;
            mLatch.countDown();
        }
    }
}