/*
 * Copyright (C) 2018 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.settings.homepage;

import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS;

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

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
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.app.ActivityManager;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.UserHandle;
import android.platform.test.annotations.DisableFlags;
import android.platform.test.flag.junit.SetFlagsRule;
import android.provider.Settings;
import android.util.ArraySet;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.FrameLayout;

import androidx.fragment.app.Fragment;
import androidx.test.core.app.ApplicationProvider;

import com.android.settings.R;
import com.android.settings.dashboard.suggestions.SuggestionFeatureProviderImpl;
import com.android.settings.flags.Flags;
import com.android.settings.testutils.shadow.ShadowActivityEmbeddingUtils;
import com.android.settings.testutils.shadow.ShadowPasswordUtils;
import com.android.settings.testutils.shadow.ShadowUserManager;
import com.android.settingslib.core.lifecycle.HideNonSystemOverlayMixin;

import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.ArgumentCaptor;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.android.controller.ActivityController;
import org.robolectric.annotation.Config;
import org.robolectric.annotation.Implementation;
import org.robolectric.annotation.Implements;
import org.robolectric.shadow.api.Shadow;
import org.robolectric.shadows.ShadowActivityManager;
import org.robolectric.util.ReflectionHelpers;

import java.util.Set;

@RunWith(RobolectricTestRunner.class)
@Config(shadows = {
        ShadowUserManager.class,
        SettingsHomepageActivityTest.ShadowSuggestionFeatureProviderImpl.class,
        ShadowActivityManager.class,
})
public class SettingsHomepageActivityTest {
    @Rule
    public final MockitoRule mMockitoRule = MockitoJUnit.rule();
    @Rule
    public final SetFlagsRule mSetFlagsRule = new SetFlagsRule();

    @Before
    public void setup() {
        Settings.Global.putInt(ApplicationProvider.getApplicationContext().getContentResolver(),
                Settings.Global.DEVICE_PROVISIONED, 1);
    }

    @After
    public void tearDown() {
        ShadowPasswordUtils.reset();
    }

    @Test
    public void launch_deviceUnprovisioned_finish() {
        Settings.Global.putInt(ApplicationProvider.getApplicationContext().getContentResolver(),
                Settings.Global.DEVICE_PROVISIONED, 0);

        SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();

        assertThat(activity.isFinishing()).isTrue();
    }

    @Test
    public void launch_shouldHaveAnimationForIaFragment() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();
        final FrameLayout frameLayout = activity.findViewById(R.id.main_content);

        assertThat(frameLayout.getLayoutTransition()).isNotNull();
    }

    @Test
    @DisableFlags(Flags.FLAG_HOMEPAGE_REVAMP)
    public void launch_configDisabled_shouldHideAvatar() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();

        final View avatarView = activity.findViewById(R.id.account_avatar);
        assertThat(avatarView.getVisibility()).isNotEqualTo(View.VISIBLE);
    }

    @Test
    @Config(qualifiers = "mcc999")
    @DisableFlags(Flags.FLAG_HOMEPAGE_REVAMP)
    public void launch_configEnabled_shouldShowAvatar() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();

        final View avatarView = activity.findViewById(R.id.account_avatar);
        assertThat(avatarView.getVisibility()).isEqualTo(View.VISIBLE);
    }

    @Test
    @Config(qualifiers = "mcc999")
    @DisableFlags(Flags.FLAG_HOMEPAGE_REVAMP)
    public void launch_LowRamDevice_shouldHideAvatar() {
        final ShadowActivityManager activityManager = Shadow.extract(
                ApplicationProvider.getApplicationContext().getSystemService(
                        ActivityManager.class));
        activityManager.setIsLowRamDevice(true);

        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();

        final View avatarView = activity.findViewById(R.id.account_avatar);
        assertThat(avatarView.getVisibility()).isNotEqualTo(View.VISIBLE);
    }

    @Test
    public void showHomepageWithSuggestion_showSuggestion() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();
        final View viewRoot = activity.findViewById(R.id.settings_homepage_container);
        final View suggestionTile = activity.findViewById(R.id.suggestion_content);

        activity.showHomepageWithSuggestion(true);

        assertThat(viewRoot.getVisibility()).isEqualTo(View.VISIBLE);
        assertThat(suggestionTile.getVisibility()).isEqualTo(View.VISIBLE);
    }

    @Test
    public void showHomepageWithSuggestion_hideSuggestion() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();
        final View viewRoot = activity.findViewById(R.id.settings_homepage_container);
        final View suggestionTile = activity.findViewById(R.id.suggestion_content);

        activity.showHomepageWithSuggestion(false);

        assertThat(viewRoot.getVisibility()).isEqualTo(View.VISIBLE);
        assertThat(suggestionTile.getVisibility()).isEqualTo(View.GONE);
    }

    @Test
    public void showHomepageWithSuggestion_callTwice_shouldKeepPreviousVisibility() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();
        final View suggestionTile = activity.findViewById(R.id.suggestion_content);

        activity.showHomepageWithSuggestion(false);
        activity.showHomepageWithSuggestion(true);

        assertThat(suggestionTile.getVisibility()).isEqualTo(View.GONE);
    }

    @Test
    public void showHomepageWithSuggestion_callAfterOnStop_shouldUpdateVisibility() {
        final SettingsHomepageActivity activity = Robolectric.buildActivity(
                SettingsHomepageActivity.class).create().get();
        final View suggestionTile = activity.findViewById(R.id.suggestion_content);

        activity.showHomepageWithSuggestion(true);
        activity.onStop();
        activity.showHomepageWithSuggestion(false);

        assertThat(suggestionTile.getVisibility()).isEqualTo(View.GONE);
    }

    @Test
    public void onStart_isNotDebuggable_shouldHideSystemOverlay() {
        ReflectionHelpers.setStaticField(Build.class, "IS_DEBUGGABLE", false);

        final ActivityController<SettingsHomepageActivity> activityController =
                Robolectric.buildActivity(SettingsHomepageActivity.class).create();
        final SettingsHomepageActivity activity = spy(activityController.get());
        final Window window = mock(Window.class);
        when(activity.getWindow()).thenReturn(window);
        activity.getLifecycle().addObserver(new HideNonSystemOverlayMixin(activity));

        activityController.start();

        verify(window).addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);
    }

    @Test
    public void onStop_isNotDebuggable_shouldRemoveHideSystemOverlay() {
        ReflectionHelpers.setStaticField(Build.class, "IS_DEBUGGABLE", false);

        final ActivityController<SettingsHomepageActivity> activityController =
                Robolectric.buildActivity(SettingsHomepageActivity.class).create();
        final SettingsHomepageActivity activity = spy(activityController.get());
        final Window window = mock(Window.class);
        when(activity.getWindow()).thenReturn(window);
        activity.getLifecycle().addObserver(new HideNonSystemOverlayMixin(activity));

        activityController.start();

        verify(window).addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS);

        final WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
        when(window.getAttributes()).thenReturn(layoutParams);

        activityController.stop();
        final ArgumentCaptor<WindowManager.LayoutParams> paramCaptor = ArgumentCaptor.forClass(
                WindowManager.LayoutParams.class);

        verify(window).setAttributes(paramCaptor.capture());
        assertThat(paramCaptor.getValue().privateFlags
                & SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS).isEqualTo(0);
    }

    @Test
    public void onCreate_TaskRoot_shouldNotFinish() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        doReturn(true).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity, never()).finish();
    }

    @Test
    public void onCreate_notTaskRoot_shouldRestartActivity() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        doReturn(false).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity).finish();
        verify(activity).startActivity(any(Intent.class));
    }

    @Test
    public void onCreate_notTaskRoot_flagNewTask_shouldOnlyFinish() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class,
                        new Intent().addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)).get());
        doReturn(false).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity).finish();
        verify(activity, never()).startActivity(any(Intent.class));
    }

    @Test
    @Config(shadows = ShadowActivityEmbeddingUtils.class)
    public void onCreate_eligibleProfile_shouldNotRestartActivity() {
        ShadowActivityEmbeddingUtils.setIsEmbeddingActivityEnabled(true);
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        doReturn(0).when(activity).getUserId();
        doReturn(true).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity, never()).finish();
        verify(activity, never()).startActivityAsUser(any(Intent.class), any(UserHandle.class));
    }

    @Test
    @Config(shadows = ShadowActivityEmbeddingUtils.class)
    public void onCreate_managedProfile_shouldRestartActivity() {
        ShadowActivityEmbeddingUtils.setIsEmbeddingActivityEnabled(true);
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        final Set<Integer> profileIds = new ArraySet<>();
        profileIds.add(10);
        ShadowUserManager.getShadow().setManagedProfiles(profileIds);
        doReturn(10).when(activity).getUserId();
        doReturn(true).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity).finish();
        verify(activity).startActivityAsUser(any(Intent.class), any(UserHandle.class));
    }

    @Test
    @Config(shadows = ShadowActivityEmbeddingUtils.class)
    public void onCreate_privateProfile_shouldRestartActivity() {
        ShadowActivityEmbeddingUtils.setIsEmbeddingActivityEnabled(true);
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        ShadowUserManager.getShadow().setPrivateProfile(11, "private", 0);
        doReturn(11).when(activity).getUserId();
        doReturn(true).when(activity).isTaskRoot();

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity).finish();
        verify(activity).startActivityAsUser(any(Intent.class), any(UserHandle.class));
    }

    /** This test is for large screen devices Activity embedding. */
    @Test
    @Config(shadows = ShadowActivityEmbeddingUtils.class)
    public void onCreate_flagClearTop_shouldInitRules() {
        ShadowActivityEmbeddingUtils.setIsEmbeddingActivityEnabled(true);
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class,
                        new Intent().setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)).get());

        activity.onCreate(/* savedInstanceState= */ null);

        verify(activity).initSplitPairRules();
    }

    @Test
    public void getInitialReferrer_differentPackage_returnCurrentReferrer() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        String referrer = "com.abc";
        doReturn(referrer).when(activity).getCurrentReferrer();

        assertEquals(activity.getInitialReferrer(), referrer);
    }

    @Test
    public void getInitialReferrer_noReferrerExtra_returnCurrentReferrer() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        String referrer = activity.getPackageName();
        doReturn(referrer).when(activity).getCurrentReferrer();

        assertEquals(activity.getInitialReferrer(), referrer);
    }

    @Test
    public void getInitialReferrer_hasReferrerExtra_returnGivenReferrer() {
        String referrer = "com.abc";
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class,
                        new Intent().putExtra(SettingsHomepageActivity.EXTRA_INITIAL_REFERRER,
                                referrer)).get());
        doReturn(activity.getPackageName()).when(activity).getCurrentReferrer();

        assertEquals(activity.getInitialReferrer(), referrer);
    }

    @Test
    public void getCurrentReferrer_hasReferrerExtra_shouldNotEqual() {
        String referrer = "com.abc";
        Uri uri = new Uri.Builder().scheme("android-app").authority(referrer).build();
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class,
                        new Intent().putExtra(Intent.EXTRA_REFERRER, uri)).get());

        assertNotEquals(activity.getCurrentReferrer(), referrer);
    }

    @Test
    public void getCurrentReferrer_hasReferrerNameExtra_shouldNotEqual() {
        String referrer = "com.abc";
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class,
                        new Intent().putExtra(Intent.EXTRA_REFERRER_NAME, referrer)).get());

        assertNotEquals(activity.getCurrentReferrer(), referrer);
    }

    @Test
    public void isCallingAppPermitted_emptyPermission_returnTrue() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        doReturn(PackageManager.PERMISSION_DENIED).when(activity)
                .checkPermission(anyString(), anyInt(), anyInt());

        assertTrue(activity.isCallingAppPermitted("", 1000));
    }

    @Test
    public void isCallingAppPermitted_notGrantedPermission_returnFalse() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        doReturn(PackageManager.PERMISSION_DENIED).when(activity)
                .checkPermission(anyString(), anyInt(), anyInt());

        assertFalse(activity.isCallingAppPermitted("android.permission.TEST", 1000));
    }

    @Test
    public void isCallingAppPermitted_grantedPermission_returnTrue() {
        SettingsHomepageActivity activity =
                spy(Robolectric.buildActivity(SettingsHomepageActivity.class).get());
        String permission = "android.permission.TEST";
        doReturn(PackageManager.PERMISSION_DENIED).when(activity)
                .checkPermission(anyString(), anyInt(), anyInt());
        doReturn(PackageManager.PERMISSION_GRANTED).when(activity)
                .checkPermission(eq(permission), anyInt(), eq(1000));

        assertTrue(activity.isCallingAppPermitted(permission, 1000));
    }

    @Implements(SuggestionFeatureProviderImpl.class)
    public static class ShadowSuggestionFeatureProviderImpl {

        @Implementation
        public Class<? extends Fragment> getContextualSuggestionFragment() {
            return Fragment.class;
        }
    }
}