[Catalyst] Migrate "Mobile data"

/*

 * 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.network

import android.content.Context

import android.telephony.SubscriptionManager

import com.android.settings.R

import com.android.settings.network.telephony.MobileDataRepository

import com.android.settings.network.telephony.SubscriptionRepository

import com.android.settingslib.datastore.KeyValueStore

import com.android.settingslib.datastore.NoOpKeyedObservable

import com.android.settingslib.metadata.PreferenceAvailabilityProvider

import com.android.settingslib.metadata.ReadWritePermit

import com.android.settingslib.metadata.SensitivityLevel

import com.android.settingslib.metadata.SwitchPreference

import kotlinx.coroutines.flow.first

import kotlinx.coroutines.runBlocking

class MobileDataPreference :

    SwitchPreference(

        KEY,

        R.string.mobile_data_settings_title,

        R.string.mobile_data_settings_summary,

    ),

    PreferenceAvailabilityProvider {

    override fun isAvailable(context: Context) =

        SubscriptionRepository(context).getSelectableSubscriptionInfoList().any {

            it.simSlotIndex > -1

        }

    override fun storage(context: Context): KeyValueStore = MobileDataStorage(context)

    override fun getReadPermit(context: Context, myUid: Int, callingUid: Int) =

        ReadWritePermit.ALLOW

    override fun getWritePermit(context: Context, value: Boolean?, myUid: Int, callingUid: Int) =

        ReadWritePermit.ALLOW

    override val sensitivityLevel

        get() = SensitivityLevel.LOW_SENSITIVITY

    @Suppress("UNCHECKED_CAST")

    private class MobileDataStorage(private val context: Context) :

        NoOpKeyedObservable<String>(), KeyValueStore {

        override fun contains(key: String) = key == KEY

        override fun <T : Any> getValue(key: String, valueType: Class<T>): T {

            val subId = SubscriptionManager.getDefaultDataSubscriptionId()

            val flow = MobileDataRepository(context).isMobileDataEnabledFlow(subId)

            return runBlocking { flow.first() } as T

        }

        override fun <T : Any> setValue(key: String, valueType: Class<T>, value: T?) {

            val subId = SubscriptionManager.getDefaultDataSubscriptionId()

            MobileDataRepository(context).setMobileDataEnabled(subId, value as Boolean)

        }

    }

    companion object {

        const val KEY = "mobile_data"

    }

}

    override fun fragmentClass() = MobileNetworkListFragment::class.java

    override fun getPreferenceHierarchy(context: Context) = preferenceHierarchy(this) {}

    override fun getPreferenceHierarchy(context: Context) =

        preferenceHierarchy(this) { +MobileDataPreference() }

    companion object {

        const val KEY = "mobile_network_list"