/*
 * Copyright (C) 2023 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.systemui.communal.ui.viewmodel

import android.os.PowerManager
import com.android.systemui.communal.domain.interactor.CommunalInteractor
import com.android.systemui.communal.domain.interactor.CommunalTutorialInteractor
import com.android.systemui.communal.domain.model.CommunalContentModel
import com.android.systemui.dagger.SysUISingleton
import com.android.systemui.media.controls.ui.MediaHost
import com.android.systemui.media.dagger.MediaModule
import com.android.systemui.shade.ShadeViewController
import javax.inject.Inject
import javax.inject.Named
import javax.inject.Provider
import kotlinx.coroutines.ExperimentalCoroutinesApi
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.flatMapLatest
import kotlinx.coroutines.flow.flowOf

/** The default view model used for showing the communal hub. */
@SysUISingleton
class CommunalViewModel
@Inject
constructor(
    private val communalInteractor: CommunalInteractor,
    tutorialInteractor: CommunalTutorialInteractor,
    shadeViewController: Provider<ShadeViewController>,
    powerManager: PowerManager,
    @Named(MediaModule.COMMUNAL_HUB) mediaHost: MediaHost,
) : BaseCommunalViewModel(communalInteractor, shadeViewController, powerManager, mediaHost) {
    @OptIn(ExperimentalCoroutinesApi::class)
    override val communalContent: Flow<List<CommunalContentModel>> =
        tutorialInteractor.isTutorialAvailable.flatMapLatest { isTutorialMode ->
            if (isTutorialMode) {
                return@flatMapLatest flowOf(communalInteractor.tutorialContent)
            }
            combine(
                communalInteractor.smartspaceContent,
                communalInteractor.umoContent,
                communalInteractor.widgetContent,
            ) { smartspace, umo, widgets ->
                smartspace + umo + widgets
            }
        }

    override fun onOpenWidgetEditor() = communalInteractor.showWidgetEditor()
}
