/*
 * 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.spa.network

import android.telephony.SubscriptionManager
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.outlined.SignalCellularAlt
import androidx.compose.runtime.Composable
import androidx.compose.runtime.MutableIntState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableIntStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.ui.graphics.vector.ImageVector
import androidx.compose.ui.platform.LocalContext
import androidx.compose.ui.res.stringResource
import androidx.lifecycle.compose.collectAsStateWithLifecycle
import com.android.settings.R
import com.android.settings.network.SimOnboardingService
import com.android.settingslib.spa.widget.preference.ListPreference
import com.android.settingslib.spa.widget.preference.ListPreferenceModel
import com.android.settingslib.spa.widget.preference.ListPreferenceOption
import com.android.settingslib.spa.widget.scaffold.BottomAppBarButton
import com.android.settingslib.spa.widget.scaffold.GlifScaffold
import com.android.settingslib.spa.widget.ui.Category
import com.android.settingslib.spa.widget.ui.SettingsIcon
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.flow
import kotlinx.coroutines.flow.flowOn

/** the sim onboarding primary sim compose */
@Composable
fun SimOnboardingPrimarySimImpl(
    nextAction: () -> Unit,
    cancelAction: () -> Unit,
    onboardingService: SimOnboardingService,
) {
    GlifScaffold(
        imageVector = Icons.Outlined.SignalCellularAlt,
        title = stringResource(id = R.string.sim_onboarding_primary_sim_title),
        description = stringResource(id = R.string.sim_onboarding_primary_sim_msg),
        actionButton =
            BottomAppBarButton(text = stringResource(id = R.string.done), onClick = nextAction),
        dismissButton =
            BottomAppBarButton(text = stringResource(id = R.string.cancel), onClick = cancelAction),
    ) {
        val callsSelectedId = rememberSaveable {
            mutableIntStateOf(SubscriptionManager.INVALID_SUBSCRIPTION_ID)
        }
        val textsSelectedId = rememberSaveable {
            mutableIntStateOf(SubscriptionManager.INVALID_SUBSCRIPTION_ID)
        }
        val mobileDataSelectedId = rememberSaveable {
            mutableIntStateOf(SubscriptionManager.INVALID_SUBSCRIPTION_ID)
        }

        val context = LocalContext.current
        val primarySimInfo =
            remember {
                    flow {
                            val selectableSubInfoList =
                                onboardingService.getSelectedSubscriptionInfoListWithRenaming()
                            emit(
                                PrimarySimRepository(context)
                                    .getPrimarySimInfo(selectableSubInfoList)
                            )
                        }
                        .flowOn(Dispatchers.Default)
                }
                .collectAsStateWithLifecycle(initialValue = null)
                .value ?: return@GlifScaffold

        if (
            !primarySimInfo.callsList.any { it.id == onboardingService.targetPrimarySimCalls } &&
                primarySimInfo.callsList.isNotEmpty()
        ) {
            onboardingService.targetPrimarySimCalls = primarySimInfo.callsList[0].id
        }
        if (
            !primarySimInfo.smsList.any { it.id == onboardingService.targetPrimarySimTexts } &&
                primarySimInfo.smsList.isNotEmpty()
        ) {
            onboardingService.targetPrimarySimTexts = primarySimInfo.smsList[0].id
        }
        if (
            !primarySimInfo.dataList.any {
                it.id == onboardingService.targetPrimarySimMobileData
            } && primarySimInfo.dataList.isNotEmpty()
        ) {
            onboardingService.targetPrimarySimMobileData = primarySimInfo.dataList[0].id
        }
        callsSelectedId.intValue = onboardingService.targetPrimarySimCalls
        textsSelectedId.intValue = onboardingService.targetPrimarySimTexts
        mobileDataSelectedId.intValue = onboardingService.targetPrimarySimMobileData
        val isAutoDataEnabled by
            onboardingService.targetPrimarySimAutoDataSwitch.collectAsStateWithLifecycle(
                initialValue = null
            )
        Category {
            PrimarySimImpl(
                primarySimInfo = primarySimInfo,
                callsSelectedId = callsSelectedId,
                textsSelectedId = textsSelectedId,
                mobileDataSelectedId = mobileDataSelectedId,
                actionSetCalls = {
                    callsSelectedId.intValue = it
                    onboardingService.targetPrimarySimCalls = it
                },
                actionSetTexts = {
                    textsSelectedId.intValue = it
                    onboardingService.targetPrimarySimTexts = it
                },
                actionSetMobileData = {
                    mobileDataSelectedId.intValue = it
                    onboardingService.targetPrimarySimMobileData = it
                },
            )
        }
        Category {
            AutomaticDataSwitchingPreference(
                isAutoDataEnabled = { isAutoDataEnabled },
                setAutoDataEnabled = { newEnabled ->
                    onboardingService.targetPrimarySimAutoDataSwitch.value = newEnabled
                },
            )
        }
    }
}

@Composable
fun CreatePrimarySimListPreference(
    title: String,
    list: List<ListPreferenceOption>,
    selectedId: MutableIntState,
    icon: ImageVector,
    onIdSelected: (id: Int) -> Unit,
) =
    ListPreference(
        object : ListPreferenceModel {
            override val title = title
            override val options = list
            override val selectedId = selectedId
            override val onIdSelected = onIdSelected
            override val icon = @Composable { SettingsIcon(icon) }
        }
    )