/*
 * 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.app.Activity
import android.content.Context
import android.content.Intent
import android.content.pm.PackageManager
import android.os.Looper
import android.os.UserHandle
import android.os.UserManager
import android.provider.Settings
import android.telephony.PhoneStateListener
import android.telephony.TelephonyManager
import androidx.annotation.DrawableRes
import androidx.preference.Preference
import com.android.settings.AirplaneModeEnabler
import com.android.settings.PreferenceRestrictionMixin
import com.android.settings.R
import com.android.settings.Utils
import com.android.settings.network.SatelliteRepository.Companion.isSatelliteOn
import com.android.settingslib.RestrictedSwitchPreference
import com.android.settingslib.datastore.AbstractKeyedDataObservable
import com.android.settingslib.datastore.DataChangeReason
import com.android.settingslib.datastore.KeyValueStore
import com.android.settingslib.datastore.SettingsGlobalStore
import com.android.settingslib.datastore.SettingsStore
import com.android.settingslib.metadata.PreferenceAvailabilityProvider
import com.android.settingslib.metadata.PreferenceLifecycleContext
import com.android.settingslib.metadata.PreferenceLifecycleProvider
import com.android.settingslib.metadata.ReadWritePermit
import com.android.settingslib.metadata.SensitivityLevel
import com.android.settingslib.metadata.SwitchPreference

// LINT.IfChange
class AirplaneModePreference :
    SwitchPreference(KEY, R.string.airplane_mode),
    PreferenceAvailabilityProvider,
    PreferenceLifecycleProvider,
    PreferenceRestrictionMixin {

    override val icon: Int
        @DrawableRes get() = R.drawable.ic_airplanemode_active

    override fun isAvailable(context: Context) =
        (context.resources.getBoolean(R.bool.config_show_toggle_airplane) &&
            !context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK))

    override fun isEnabled(context: Context) = super<PreferenceRestrictionMixin>.isEnabled(context)

    override val restrictionKeys
        get() = arrayOf(UserManager.DISALLOW_AIRPLANE_MODE)

    override fun getReadPermit(context: Context, callingPid: Int, callingUid: Int) =
        ReadWritePermit.ALLOW

    override fun getWritePermit(
        context: Context,
        value: Boolean?,
        callingPid: Int,
        callingUid: Int,
    ) =
        when {
            isSatelliteOn(context) || isInEcmMode(context) -> ReadWritePermit.DISALLOW
            else -> ReadWritePermit.ALLOW
        }

    override val sensitivityLevel
        get() = SensitivityLevel.HIGH_SENSITIVITY

    override fun storage(context: Context): KeyValueStore =
        AirplaneModeStorage(context, SettingsGlobalStore.get(context))

    @Suppress("DEPRECATION", "MissingPermission", "UNCHECKED_CAST")
    private class AirplaneModeStorage(
        private val context: Context,
        private val settingsStore: SettingsStore,
    ) : AbstractKeyedDataObservable<String>(), KeyValueStore {
        private var phoneStateListener: PhoneStateListener? = null

        override fun contains(key: String) =
            settingsStore.contains(KEY) &&
                context.getSystemService(TelephonyManager::class.java) != null

        override fun <T : Any> getDefaultValue(key: String, valueType: Class<T>) =
            DEFAULT_VALUE as T

        override fun <T : Any> getValue(key: String, valueType: Class<T>): T =
            (settingsStore.getBoolean(key) ?: DEFAULT_VALUE) as T

        override fun <T : Any> setValue(key: String, valueType: Class<T>, value: T?) {
            if (value is Boolean) {
                settingsStore.setBoolean(key, value)

                val intent = Intent(Intent.ACTION_AIRPLANE_MODE_CHANGED)
                intent.putExtra("state", value)
                context.sendBroadcastAsUser(intent, UserHandle.ALL)
            }
        }

        override fun onFirstObserverAdded() {
            context.getSystemService(TelephonyManager::class.java)?.let {
                phoneStateListener =
                    object : PhoneStateListener(Looper.getMainLooper()) {
                        override fun onRadioPowerStateChanged(state: Int) {
                            notifyChange(KEY, DataChangeReason.UPDATE)
                        }
                    }
                it.listen(phoneStateListener, PhoneStateListener.LISTEN_RADIO_POWER_STATE_CHANGED)
            }
        }

        override fun onLastObserverRemoved() {
            context
                .getSystemService(TelephonyManager::class.java)
                ?.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE)
        }
    }

    override fun onCreate(context: PreferenceLifecycleContext) {
        context.requirePreference<RestrictedSwitchPreference>(KEY).onPreferenceChangeListener =
            Preference.OnPreferenceChangeListener { _: Preference, _: Any ->
                if (isInEcmMode(context)) {
                    showEcmDialog(context)
                    return@OnPreferenceChangeListener false
                }
                if (isSatelliteOn(context)) {
                    showSatelliteDialog(context)
                    return@OnPreferenceChangeListener false
                }
                return@OnPreferenceChangeListener true
            }
    }

    override fun onActivityResult(
        context: PreferenceLifecycleContext,
        requestCode: Int,
        resultCode: Int,
        data: Intent?,
    ): Boolean {
        if (requestCode == REQUEST_CODE_EXIT_ECM && resultCode == Activity.RESULT_OK) {
            context.getKeyValueStore(KEY)?.setBoolean(KEY, true)
        }
        return true
    }

    private fun isInEcmMode(context: Context) =
        AirplaneModeEnabler.isInEcmMode(
            context,
            context.getSystemService(TelephonyManager::class.java),
        )

    private fun showEcmDialog(context: PreferenceLifecycleContext) {
        val intent =
            Intent(TelephonyManager.ACTION_SHOW_NOTICE_ECM_BLOCK_OTHERS, null)
                .setPackage(Utils.PHONE_PACKAGE_NAME)
        context.startActivityForResult(intent, REQUEST_CODE_EXIT_ECM, null)
    }

    private fun showSatelliteDialog(context: PreferenceLifecycleContext) {
        val intent =
            Intent(context, SatelliteWarningDialogActivity::class.java)
                .putExtra(
                    SatelliteWarningDialogActivity.EXTRA_TYPE_OF_SATELLITE_WARNING_DIALOG,
                    SatelliteWarningDialogActivity.TYPE_IS_AIRPLANE_MODE,
                )
        context.startActivity(intent)
    }

    companion object {
        const val KEY = Settings.Global.AIRPLANE_MODE_ON
        const val DEFAULT_VALUE = false
        const val REQUEST_CODE_EXIT_ECM = 1

        fun Context.isAirplaneModeOn() = SettingsGlobalStore.get(this).getBoolean(KEY) == true
    }
}
// LINT.ThenChange(AirplaneModePreferenceController.java)