/*
 * Copyright (C) 2016 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;

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

import static org.mockito.Mockito.any;
import static org.mockito.Mockito.eq;
import static org.mockito.Mockito.doNothing;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;
import static org.robolectric.Shadows.shadowOf;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Activity;
import android.app.Fragment;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.os.Bundle;
import android.provider.Settings;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ScrollView;

import com.android.settings.testutils.SettingsRobolectricTestRunner;
import com.android.settings.testutils.shadow.ShadowUtils;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.robolectric.Robolectric;
import org.robolectric.annotation.Config;
import org.robolectric.shadows.ShadowAccountManager;
import org.robolectric.shadows.ShadowActivity;

@RunWith(SettingsRobolectricTestRunner.class)
@Config(
    manifest = TestConfig.MANIFEST_PATH,
    sdk = TestConfig.SDK_VERSION,
    shadows = {ShadowUtils.class}
)
public class MasterClearTest {
    private static final String TEST_ACCOUNT_TYPE = "android.test.account.type";
    private static final String TEST_CONFIRMATION_PACKAGE = "android.test.confirmation.pkg";
    private static final String TEST_ACCOUNT_NAME = "test@example.com";

    @Mock
    private MasterClear mMasterClear;
    @Mock
    private ScrollView mScrollView;
    @Mock
    private LinearLayout mLinearLayout;

    @Mock
    private PackageManager mPackageManager;

    @Mock
    private AccountManager mAccountManager;

    @Mock
    private Activity mMockActivity;

    private ShadowActivity mShadowActivity;
    private ShadowAccountManager mShadowAccountManager;
    private Activity mActivity;
    private View mContentView;

    private class ActivityForTest extends SettingsActivity {
        private Bundle mArgs;

        @Override
        public void startPreferencePanel(Fragment caller, String fragmentClass, Bundle args,
            int titleRes, CharSequence titleText, Fragment resultTo, int resultRequestCode) {
            mArgs = args;
        }

        public Bundle getArgs() {
            return mArgs;
        }
    }

    @Before
    public void setUp() {
        MockitoAnnotations.initMocks(this);
        mMasterClear = spy(new MasterClear());
        mActivity = Robolectric.setupActivity(Activity.class);
        mShadowActivity = shadowOf(mActivity);
        // mShadowAccountManager = shadowOf(AccountManager.get(mActivity));
        mContentView = LayoutInflater.from(mActivity).inflate(R.layout.master_clear, null);

        // Make scrollView only have one child
        when(mScrollView.getChildAt(0)).thenReturn(mLinearLayout);
        when(mScrollView.getChildCount()).thenReturn(1);
    }

    @Test
    public void testShowWipeEuicc_euiccDisabled() {
        prepareEuiccState(
                false /* isEuiccEnabled */, true /* isEuiccProvisioned */);
        assertThat(mMasterClear.showWipeEuicc()).isFalse();
    }

    @Test
    public void testShowWipeEuicc_euiccEnabled_unprovisioned() {
        prepareEuiccState(
                true /* isEuiccEnabled */, false /* isEuiccProvisioned */);
        assertThat(mMasterClear.showWipeEuicc()).isFalse();
    }

    @Test
    public void testShowWipeEuicc_euiccEnabled_provisioned() {
        prepareEuiccState(
                true /* isEuiccEnabled */, true /* isEuiccProvisioned */);
        assertThat(mMasterClear.showWipeEuicc()).isTrue();
    }

    private void prepareEuiccState(
            boolean isEuiccEnabled,
            boolean isEuiccProvisioned) {
        doReturn(mActivity).when(mMasterClear).getContext();
        doReturn(isEuiccEnabled).when(mMasterClear).isEuiccEnabled(any());
        ContentResolver cr = mActivity.getContentResolver();
        Settings.Global.putInt(
                cr, android.provider.Settings.Global.EUICC_PROVISIONED, isEuiccProvisioned ? 1 : 0);
    }

    @Test
    public void testHasReachedBottom_NotScrollDown_returnFalse() {
        initScrollView(100, 0, 200);

        assertThat(mMasterClear.hasReachedBottom(mScrollView)).isFalse();
    }

    @Test
    public void testHasReachedBottom_CanNotScroll_returnTrue() {
        initScrollView(100, 0, 80);

        assertThat(mMasterClear.hasReachedBottom(mScrollView)).isTrue();
    }

    @Test
    public void testHasReachedBottom_ScrollToBottom_returnTrue() {
        initScrollView(100, 100, 200);

        assertThat(mMasterClear.hasReachedBottom(mScrollView)).isTrue();
    }

    @Test
    public void testInitiateMasterClear_inDemoMode_sendsIntent() {
        ShadowUtils.setIsDemoUser(true);

        final ComponentName componentName = ComponentName.unflattenFromString(
                "com.android.retaildemo/.DeviceAdminReceiver");
        ShadowUtils.setDeviceOwnerComponent(componentName);

        mMasterClear.mInitiateListener.onClick(
                mContentView.findViewById(R.id.initiate_master_clear));
        final Intent intent = mShadowActivity.getNextStartedActivity();
        assertThat(Intent.ACTION_FACTORY_RESET).isEqualTo(intent.getAction());
        assertThat(componentName.getPackageName()).isEqualTo(intent.getPackage());
    }

    @Test
    public void testTryShowAccountConfirmation_unsupported() {
        when(mMasterClear.getActivity()).thenReturn(mActivity);
        /* Using the default resources, account confirmation shouldn't trigger */
        assertThat(mMasterClear.tryShowAccountConfirmation()).isFalse();
    }

    @Test
    public void testTryShowAccountConfirmation_no_relevant_accounts() {
        when(mMasterClear.getActivity()).thenReturn(mMockActivity);
        when(mMockActivity.getString(R.string.account_type)).thenReturn(TEST_ACCOUNT_TYPE);
        when(mMockActivity.getString(R.string.account_confirmation_package)).thenReturn(TEST_CONFIRMATION_PACKAGE);

        Account[] accounts = new Account[0];
        when(mMockActivity.getSystemService(Context.ACCOUNT_SERVICE)).thenReturn(mAccountManager);
        when(mAccountManager.getAccountsByType(TEST_ACCOUNT_TYPE)).thenReturn(accounts);
        assertThat(mMasterClear.tryShowAccountConfirmation()).isFalse();
    }

    @Test
    public void testTryShowAccountConfirmation_unresolved() {
        when(mMasterClear.getActivity()).thenReturn(mMockActivity);
        when(mMockActivity.getString(R.string.account_type)).thenReturn(TEST_ACCOUNT_TYPE);
        when(mMockActivity.getString(R.string.account_confirmation_package)).thenReturn(TEST_CONFIRMATION_PACKAGE);
        Account[] accounts = new Account[] { new Account(TEST_ACCOUNT_NAME, TEST_ACCOUNT_TYPE) };
        when(mMockActivity.getSystemService(Context.ACCOUNT_SERVICE)).thenReturn(mAccountManager);
        when(mAccountManager.getAccountsByType(TEST_ACCOUNT_TYPE)).thenReturn(accounts);
        // The package manager should not resolve the confirmation intent targeting the non-existent
        // confirmation package.
        when(mMockActivity.getPackageManager()).thenReturn(mPackageManager);
        assertThat(mMasterClear.tryShowAccountConfirmation()).isFalse();
    }

    @Test
    public void testTryShowAccountConfirmation_ok() {
        when(mMasterClear.getActivity()).thenReturn(mMockActivity);
        // Only try to show account confirmation if the appropriate resource overlays are available.
        when(mMockActivity.getString(R.string.account_type)).thenReturn(TEST_ACCOUNT_TYPE);
        when(mMockActivity.getString(R.string.account_confirmation_package)).thenReturn(TEST_CONFIRMATION_PACKAGE);
        // Add accounts to trigger the search for a resolving intent.
        Account[] accounts = new Account[] { new Account(TEST_ACCOUNT_NAME, TEST_ACCOUNT_TYPE) };
        when(mMockActivity.getSystemService(Context.ACCOUNT_SERVICE)).thenReturn(mAccountManager);
        when(mAccountManager.getAccountsByType(TEST_ACCOUNT_TYPE)).thenReturn(accounts);
        // The package manager should not resolve the confirmation intent targeting the non-existent
        // confirmation package.
        when(mMockActivity.getPackageManager()).thenReturn(mPackageManager);

        ActivityInfo activityInfo = new ActivityInfo();
        activityInfo.packageName = TEST_CONFIRMATION_PACKAGE;
        ResolveInfo resolveInfo = new ResolveInfo();
        resolveInfo.activityInfo = activityInfo;
        when(mPackageManager.resolveActivity(any(), eq(0))).thenReturn(resolveInfo);

        // Finally mock out the startActivityForResultCall
        doNothing().when(mMockActivity).startActivityForResult(any(), eq(MasterClear.CREDENTIAL_CONFIRM_REQUEST));

        assertThat(mMasterClear.tryShowAccountConfirmation()).isTrue();
    }

    private void initScrollView(int height, int scrollY, int childBottom) {
        when(mScrollView.getHeight()).thenReturn(height);
        when(mScrollView.getScrollY()).thenReturn(scrollY);
        when(mLinearLayout.getBottom()).thenReturn(childBottom);
    }
}