/*
 * 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.network.telephony;

import static androidx.lifecycle.Lifecycle.Event.ON_START;

import static com.android.settings.core.BasePreferenceController.AVAILABLE;
import static com.android.settings.core.BasePreferenceController.CONDITIONALLY_UNAVAILABLE;
import static com.android.settings.network.telephony.MobileNetworkUtils.getRafFromNetworkType;

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

import static org.junit.Assert.assertEquals;
import static org.mockito.ArgumentMatchers.anyInt;
import static org.mockito.ArgumentMatchers.anyString;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;

import android.content.Context;
import android.net.Uri;
import android.os.PersistableBundle;
import android.provider.Settings;
import android.telephony.CarrierConfigManager;
import android.telephony.ServiceState;
import android.telephony.SubscriptionManager;
import android.telephony.TelephonyManager;

import androidx.lifecycle.LifecycleOwner;
import androidx.preference.ListPreference;
import androidx.preference.PreferenceScreen;

import com.android.settings.R;
import com.android.settings.network.telephony.TelephonyConstants.TelephonyManagerConstants;
import com.android.settingslib.core.lifecycle.Lifecycle;

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

@RunWith(RobolectricTestRunner.class)
public class EnabledNetworkModePreferenceControllerTest {
    private static final int SUB_ID = 2;
    public static final String KEY = "enabled_network";

    private static final long ALLOWED_ALL_NETWORK_TYPE = -1;
    private static final long DISABLED_5G_NETWORK_TYPE = ~TelephonyManager.NETWORK_TYPE_BITMASK_NR;

    @Mock
    private TelephonyManager mTelephonyManager;
    @Mock
    private TelephonyManager mInvalidTelephonyManager;
    @Mock
    private CarrierConfigManager mCarrierConfigManager;
    @Mock
    private ServiceState mServiceState;

    private PersistableBundle mPersistableBundle;
    private EnabledNetworkModePreferenceController mController;
    private ListPreference mPreference;
    private Context mContext;
    private LifecycleOwner mLifecycleOwner;
    private Lifecycle mLifecycle;

    @Before
    public void setUp() throws Exception {
        MockitoAnnotations.initMocks(this);
        mLifecycleOwner = () -> mLifecycle;
        mLifecycle = new Lifecycle(mLifecycleOwner);
        mContext = spy(RuntimeEnvironment.application);
        doReturn(mTelephonyManager).when(mContext).getSystemService(Context.TELEPHONY_SERVICE);
        doReturn(mTelephonyManager).when(mContext).getSystemService(TelephonyManager.class);
        doReturn(mCarrierConfigManager).when(mContext).getSystemService(CarrierConfigManager.class);
        doReturn(mTelephonyManager).when(mTelephonyManager).createForSubscriptionId(SUB_ID);
        doReturn(mInvalidTelephonyManager).when(mTelephonyManager).createForSubscriptionId(
                SubscriptionManager.INVALID_SUBSCRIPTION_ID);
        doReturn(mContext).when(mContext).createPackageContext(anyString(), anyInt());
        doReturn(mServiceState).when(mTelephonyManager).getServiceState();
        mPersistableBundle = new PersistableBundle();
        doReturn(mPersistableBundle).when(mCarrierConfigManager).getConfig();
        doReturn(mPersistableBundle).when(mCarrierConfigManager).getConfigForSubId(SUB_ID);
        mPreference = new ListPreference(mContext);
        mController = new EnabledNetworkModePreferenceController(mContext, KEY);
        mockAllowedNetworkTypes(ALLOWED_ALL_NETWORK_TYPE);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_LTE_CDMA_EVDO_GSM_WCDMA);
        mController.init(mLifecycle, SUB_ID);
        mPreference.setKey(mController.getPreferenceKey());
    }

    @Test
    public void getAvailabilityStatus_hideCarrierNetworkSettings_returnUnavailable() {
        mPersistableBundle.putBoolean(
                CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL,
                true);

        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
    }

    @Test
    public void getAvailabilityStatus_hidePreferredNetworkType_returnUnavailable() {
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL,
                true);

        when(mServiceState.getState()).thenReturn(ServiceState.STATE_OUT_OF_SERVICE);
        when(mServiceState.getDataRegistrationState()).thenReturn(
                ServiceState.STATE_OUT_OF_SERVICE);
        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);

        when(mServiceState.getState()).thenReturn(ServiceState.STATE_IN_SERVICE);
        when(mServiceState.getDataRegistrationState()).thenReturn(ServiceState.STATE_IN_SERVICE);

        when(mServiceState.getRoaming()).thenReturn(false);
        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);

        when(mServiceState.getRoaming()).thenReturn(true);
        assertThat(mController.getAvailabilityStatus()).isEqualTo(CONDITIONALLY_UNAVAILABLE);
    }

    @Test
    public void getAvailabilityStatus_notWorldPhone_returnAvailable() {
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL,
                false);
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_WORLD_PHONE_BOOL, false);

        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
    }

    @Test
    public void updateState_LteWorldPhone_GlobalHasLte() {
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_WORLD_MODE_ENABLED_BOOL, true);

        mController.updateState(mPreference);

        assertThat(mPreference.getEntryValues())
                .asList()
                .contains(String.valueOf(TelephonyManager.NETWORK_MODE_LTE_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_5gWorldPhone_GlobalHasNr() {
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_NR_ENABLED_BOOL, true);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);
        mController.init(mLifecycle, SUB_ID);
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_WORLD_MODE_ENABLED_BOOL, true);

        mController.updateState(mPreference);

        assertThat(mPreference.getEntryValues())
                .asList()
                .contains(String.valueOf(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_selectedOn5gItem() {
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_NR_ENABLED_BOOL, true);
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mController.init(mLifecycle, SUB_ID);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(
                        TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_disAllowed5g_5gOptionHidden() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mockAllowedNetworkTypes(DISABLED_5G_NETWORK_TYPE);
        mController.init(mLifecycle, SUB_ID);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getEntryValues())
                .asList()
                .doesNotContain(
                        String.valueOf(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_disAllowed5g_selectOn4gOption() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);
        mockAllowedNetworkTypes(DISABLED_5G_NETWORK_TYPE);
        mController.init(mLifecycle, SUB_ID);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(
                        TelephonyManagerConstants.NETWORK_MODE_LTE_TDSCDMA_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_NrEnableBoolFalse_5gOptionHidden() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_NR_LTE_GSM_WCDMA);
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_NR_ENABLED_BOOL, false);

        mController.init(mLifecycle, SUB_ID);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(
                        TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));
        assertThat(mPreference.getEntryValues())
                .asList()
                .doesNotContain(
                        String.valueOf(TelephonyManager.NETWORK_MODE_NR_LTE_GSM_WCDMA));
    }

    @Test
    public void updateState_GlobalDisAllowed5g_GlobalWithoutNR() {
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);
        mockAllowedNetworkTypes(DISABLED_5G_NETWORK_TYPE);
        mController.init(mLifecycle, SUB_ID);
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_WORLD_MODE_ENABLED_BOOL, true);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getEntryValues())
                .asList()
                .doesNotContain(
                        String.valueOf(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_GlobalDisAllowed5g_SelectOnGlobal() {
        mockAccessFamily(TelephonyManager.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);
        mockAllowedNetworkTypes(DISABLED_5G_NETWORK_TYPE);
        mController.init(mLifecycle, SUB_ID);
        mPersistableBundle.putBoolean(CarrierConfigManager.KEY_WORLD_MODE_ENABLED_BOOL, true);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_NR_LTE_CDMA_EVDO_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(
                        TelephonyManagerConstants.NETWORK_MODE_LTE_CDMA_EVDO_GSM_WCDMA));
    }

    @Test
    public void updateState_updateByNetworkMode() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA));
        assertThat(mPreference.getSummary()).isEqualTo("3G");
    }

    @Test
    public void updateState_updateByNetworkMode_useDefaultValue() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA);

        mController.updateState(mPreference);

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));
    }

    @Test
    public void onPreferenceChange_updateSuccess() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA);
        doReturn(true).when(mTelephonyManager).setPreferredNetworkTypeBitmask(
                getRafFromNetworkType(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));

        mController.updateState(mPreference);
        mController.onPreferenceChange(mPreference,
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));

        assertThat(mPreference.getValue()).isEqualTo(
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));
    }

    @Test
    public void onPreferenceChange_updateFail() {
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA);
        doReturn(false).when(mTelephonyManager).setPreferredNetworkTypeBitmask(
                getRafFromNetworkType(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));

        mController.updateState(mPreference);
        mController.onPreferenceChange(mPreference,
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));

        assertThat(mPreference.getValue()).isNotEqualTo(
                String.valueOf(TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA));
    }

    @Test
    public void preferredNetworkModeNotification_preferenceUpdates() {
        PreferenceScreen screen = mock(PreferenceScreen.class);
        mockEnabledNetworkMode(TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA);
        doReturn(mPreference).when(screen).findPreference(KEY);
        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA);
        mController.displayPreference(screen);
        mController.updateState(mPreference);
        mLifecycle.handleLifecycleEvent(ON_START);

        assertThat(Integer.parseInt(mPreference.getValue())).isEqualTo(
                TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA);
        assertThat(mPreference.getSummary()).isEqualTo("3G");


        Settings.Global.putInt(mContext.getContentResolver(),
                Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID,
                TelephonyManagerConstants.NETWORK_MODE_GSM_ONLY);
        final Uri uri = Settings.Global.getUriFor(Settings.Global.PREFERRED_NETWORK_MODE + SUB_ID);
        mContext.getContentResolver().notifyChange(uri, null);

        assertThat(Integer.parseInt(mPreference.getValue())).isEqualTo(
                TelephonyManagerConstants.NETWORK_MODE_GSM_ONLY);
        assertThat(mPreference.getSummary()).isEqualTo("2G");
    }

    @Test
    public void checkResource_stringArrayLength() {
        String[] entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_cdma_values);
        assertEquals(4, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_cdma_no_lte_values);
        assertEquals(2, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_cdma_only_lte_values);
        assertEquals(2, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_tdscdma_values);
        assertEquals(3, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_except_gsm_lte_values);
        assertEquals(1, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_except_gsm_values);
        assertEquals(2, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_except_lte_values);
        assertEquals(2, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_values);
        assertEquals(3, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.enabled_networks_values);
        assertEquals(3, entryValues.length);

        entryValues = mContext.getResources().getStringArray(
                R.array.preferred_network_mode_values_world_mode);
        assertEquals(3, entryValues.length);
    }

    private void mockEnabledNetworkMode(int networkMode) {
        if (networkMode == TelephonyManagerConstants.NETWORK_MODE_TDSCDMA_GSM_WCDMA) {
            mockPhoneType(TelephonyManager.PHONE_TYPE_GSM);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_SUPPORT_TDSCDMA_BOOL, true);
        } else if (networkMode == TelephonyManagerConstants.NETWORK_MODE_LTE_GSM_WCDMA) {
            mockPhoneType(TelephonyManager.PHONE_TYPE_GSM);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL, true);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL, true);
        } else if (networkMode == TelephonyManagerConstants.NETWORK_MODE_NR_LTE_TDSCDMA_GSM_WCDMA) {
            mockPhoneType(TelephonyManager.PHONE_TYPE_GSM);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_SUPPORT_TDSCDMA_BOOL, true);
        } else if (networkMode
                == TelephonyManagerConstants.NETWORK_MODE_NR_LTE_GSM_WCDMA) {
            mockPhoneType(TelephonyManager.PHONE_TYPE_GSM);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_PREFER_2G_BOOL, true);
            mPersistableBundle.putBoolean(CarrierConfigManager.KEY_LTE_ENABLED_BOOL, true);
        }
    }

    private void mockAllowedNetworkTypes(long allowedNetworkType) {
        doReturn(allowedNetworkType).when(mTelephonyManager).getAllowedNetworkTypes();
    }

    private void mockAccessFamily(int networkMode) {
        doReturn(MobileNetworkUtils.getRafFromNetworkType(networkMode))
                .when(mTelephonyManager)
                .getSupportedRadioAccessFamily();
    }

    private void mockPhoneType(int phoneType) {
        doReturn(phoneType).when(mTelephonyManager).getPhoneType();
    }
}