/*
 * 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.settings.deviceinfo

import android.content.Context
import android.content.res.Resources
import android.os.UserManager
import android.telephony.SubscriptionInfo
import android.telephony.SubscriptionManager
import android.telephony.TelephonyManager
import androidx.preference.Preference
import androidx.preference.PreferenceCategory
import androidx.preference.PreferenceManager
import androidx.test.core.app.ApplicationProvider
import androidx.test.ext.junit.runners.AndroidJUnit4
import com.android.dx.mockito.inline.extended.ExtendedMockito
import com.android.settings.R
import com.android.settings.core.BasePreferenceController
import com.google.common.truth.Truth.assertThat
import org.junit.After
import org.junit.Before
import org.junit.Test
import org.junit.runner.RunWith
import org.mockito.kotlin.any
import org.mockito.kotlin.doReturn
import org.mockito.kotlin.mock
import org.mockito.kotlin.spy
import org.mockito.kotlin.stub
import org.mockito.kotlin.verify
import org.mockito.kotlin.whenever

@RunWith(AndroidJUnit4::class)
class PhoneNumberPreferenceControllerTest {

    private val mockUserManager = mock<UserManager>()
    private val mockTelephonyManager = mock<TelephonyManager>()
    private val mockSubscriptionManager = mock<SubscriptionManager>()
    private val mockResources = mock<Resources>()

    private val context: Context =
        spy(ApplicationProvider.getApplicationContext()) {
            on { getSystemService(SubscriptionManager::class.java) } doReturn mockSubscriptionManager
            on { getSystemService(TelephonyManager::class.java) } doReturn mockTelephonyManager
	    on { getSystemService(Context.TELEPHONY_SERVICE) } doReturn mockTelephonyManager
            on { getSystemService(UserManager::class.java) } doReturn mockUserManager
            on { resources } doReturn mockResources
        }

    private val subscriptionInfo = mock<SubscriptionInfo>()
    private val preference = spy(Preference(context))
    private val secondPreference = mock<Preference>()
    private var category = PreferenceCategory(context)
    private var preferenceScreen = PreferenceManager(context).createPreferenceScreen(context)

    private var controller = spy(PhoneNumberPreferenceController(context, "phone_number"))

    @Before
    fun setup() {
        // By default, available
        mockTelephonyManager.stub {
            on { isDataCapable } doReturn true
            on { isDeviceVoiceCapable } doReturn true
        }
        mockResources.stub {
            on { getBoolean(R.bool.config_show_sim_info) } doReturn true
        }
        mockUserManager.stub {
            on { isAdminUser } doReturn true
        }

        preference.setKey(controller.preferenceKey)
        preference.isVisible = true
        preferenceScreen.addPreference(preference)
        category.key = "basic_info_category"
        preferenceScreen.addPreference(category)

        doReturn(secondPreference).whenever(controller).createNewPreference(context)
    }

    @Test
    fun displayPreference_multiSim_shouldAddSecondPreference() {
        whenever(mockTelephonyManager.phoneCount).thenReturn(2)

        val sim1Preference = Preference(context)
        category.addItemFromInflater(sim1Preference)
        controller.displayPreference(preferenceScreen)

        assertThat(category.preferenceCount).isEqualTo(2)
    }

    @Test
    fun updateState_singleSim_shouldUpdateTitleAndPhoneNumber() {
        val phoneNumber = "1111111111"
        doReturn(subscriptionInfo).whenever(controller).getSubscriptionInfo(any())
        doReturn(phoneNumber).whenever(controller).getFormattedPhoneNumber(subscriptionInfo)
        whenever(mockTelephonyManager.phoneCount).thenReturn(1)
        controller.displayPreference(preferenceScreen)

        controller.updateState(preference)

        verify(preference).title = context.getString(R.string.status_number)
        verify(preference).summary = phoneNumber
    }

    @Test
    fun updateState_multiSim_shouldUpdateTitleAndPhoneNumberOfMultiplePreferences() {
        val phoneNumber = "1111111111"
        doReturn(subscriptionInfo).whenever(controller).getSubscriptionInfo(any())
        doReturn(phoneNumber).whenever(controller).getFormattedPhoneNumber(subscriptionInfo)
        whenever(mockTelephonyManager.phoneCount).thenReturn(2)
        controller.displayPreference(preferenceScreen)

        controller.updateState(preference)

        verify(preference).title =
            context.getString(R.string.status_number_sim_slot, 1 /* sim slot */)
        verify(preference).summary = phoneNumber
        verify(secondPreference).title =
            context.getString(R.string.status_number_sim_slot, 2 /* sim slot */)
        verify(secondPreference).summary = phoneNumber
    }

    @Test
    fun getSummary_cannotGetActiveSubscriptionInfo_shouldShowNotAvailable() {
        whenever(mockSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(null)
        controller.displayPreference(preferenceScreen)

        controller.updateState(preference)

        verify(preference).summary = context.getString(R.string.device_info_not_available)
    }

    @Test
    fun getSummary_getEmptySubscriptionInfo_shouldShowNotAvailable() {
        whenever(mockSubscriptionManager.getActiveSubscriptionInfoList()).thenReturn(emptyList())
        controller.displayPreference(preferenceScreen)

        controller.updateState(preference)

        verify(preference).summary = context.getString(R.string.device_info_not_available)
    }

    @Test
    fun getAvailabilityStatus_default_displayed() {
        // Use defaults from setup()
        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.AVAILABLE)
    }

    @Test
    fun getAvailabilityStatus_noShowSimInfo_notDisplayed() {
        mockResources.stub {
            on { getBoolean(R.bool.config_show_sim_info) } doReturn false
        }

        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE)
    }

    @Test
    fun getAvailabilityStatus_voiceCapable_notDataCapable_displayed() {
        mockTelephonyManager.stub {
            on { isDeviceVoiceCapable } doReturn true
            on { isDataCapable } doReturn false
        }

        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.AVAILABLE)
    }

    @Test
    fun getAvailabilityStatus_notVoiceCapable_dataCapable_displayed() {
        mockTelephonyManager.stub {
            on { isDeviceVoiceCapable } doReturn false
            on { isDataCapable } doReturn true
        }

        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.AVAILABLE)
    }

    @Test
    fun getAvailabilityStatus_notVoiceCapable_notDataCapable_notDisplayed() {
        mockTelephonyManager.stub {
            on { isDeviceVoiceCapable } doReturn false
            on { isDataCapable } doReturn false
        }

        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.UNSUPPORTED_ON_DEVICE)
    }

    @Test
    fun getAvailabilityStatus_notUserAdmin_notDisplayed() {
        mockUserManager.stub {
            on { isAdminUser } doReturn false
        }

        val availabilityStatus = controller.availabilityStatus
        assertThat(availabilityStatus).isEqualTo(BasePreferenceController.DISABLED_FOR_USER)
    }
}