package com.android.customization.testing

import android.app.Activity
import android.content.Context
import android.text.TextUtils
import androidx.fragment.app.FragmentActivity
import com.android.customization.model.color.ColorCustomizationManager
import com.android.customization.model.color.ColorOptionsProvider
import com.android.customization.model.theme.OverlayManagerCompat
import com.android.customization.model.theme.ThemeBundleProvider
import com.android.customization.model.theme.ThemeManager
import com.android.customization.module.CustomizationInjector
import com.android.customization.module.CustomizationPreferences
import com.android.customization.module.ThemesUserEventLogger
import com.android.customization.picker.clock.data.repository.ClockRegistryProvider
import com.android.customization.picker.clock.data.repository.FakeClockPickerRepository
import com.android.customization.picker.clock.domain.interactor.ClockPickerInteractor
import com.android.customization.picker.clock.ui.view.ClockViewFactory
import com.android.customization.picker.clock.ui.viewmodel.ClockCarouselViewModel
import com.android.customization.picker.clock.ui.viewmodel.ClockSectionViewModel
import com.android.customization.picker.clock.ui.viewmodel.ClockSettingsViewModel
import com.android.customization.picker.color.data.repository.ColorPickerRepository
import com.android.customization.picker.color.data.repository.ColorPickerRepositoryImpl
import com.android.customization.picker.color.domain.interactor.ColorPickerInteractor
import com.android.customization.picker.color.domain.interactor.ColorPickerSnapshotRestorer
import com.android.customization.picker.color.ui.viewmodel.ColorPickerViewModel
import com.android.customization.picker.quickaffordance.data.repository.KeyguardQuickAffordancePickerRepository
import com.android.customization.picker.quickaffordance.domain.interactor.KeyguardQuickAffordancePickerInteractor
import com.android.customization.picker.quickaffordance.domain.interactor.KeyguardQuickAffordanceSnapshotRestorer
import com.android.systemui.shared.clocks.ClockRegistry
import com.android.systemui.shared.customization.data.content.CustomizationProviderClient
import com.android.systemui.shared.customization.data.content.CustomizationProviderClientImpl
import com.android.wallpaper.config.BaseFlags
import com.android.wallpaper.model.WallpaperColorsViewModel
import com.android.wallpaper.module.DrawableLayerResolver
import com.android.wallpaper.module.PackageStatusNotifier
import com.android.wallpaper.module.UserEventLogger
import com.android.wallpaper.picker.customization.data.content.WallpaperClientImpl
import com.android.wallpaper.picker.customization.data.repository.WallpaperRepository
import com.android.wallpaper.picker.customization.domain.interactor.WallpaperInteractor
import com.android.wallpaper.picker.undo.domain.interactor.SnapshotRestorer
import com.android.wallpaper.testing.TestInjector
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope

/** Test implementation of the dependency injector. */
class TestCustomizationInjector : TestInjector(), CustomizationInjector {
    private var customizationPreferences: CustomizationPreferences? = null
    private var themeManager: ThemeManager? = null
    private var packageStatusNotifier: PackageStatusNotifier? = null
    private var drawableLayerResolver: DrawableLayerResolver? = null
    private var userEventLogger: UserEventLogger? = null
    private var wallpaperInteractor: WallpaperInteractor? = null
    private var keyguardQuickAffordancePickerInteractor: KeyguardQuickAffordancePickerInteractor? =
        null
    private var flags: BaseFlags? = null
    private var customizationProviderClient: CustomizationProviderClient? = null
    private var keyguardQuickAffordanceSnapshotRestorer: KeyguardQuickAffordanceSnapshotRestorer? =
        null
    private var clockRegistry: ClockRegistry? = null
    private var clockPickerInteractor: ClockPickerInteractor? = null
    private var clockSectionViewModel: ClockSectionViewModel? = null
    private var clockViewFactory: ClockViewFactory? = null
    private var colorPickerRepository: ColorPickerRepository? = null
    private var colorPickerInteractor: ColorPickerInteractor? = null
    private var colorPickerViewModelFactory: ColorPickerViewModel.Factory? = null
    private var colorPickerSnapshotRestorer: ColorPickerSnapshotRestorer? = null
    private var colorCustomizationManager: ColorCustomizationManager? = null
    private var clockCarouselViewModel: ClockCarouselViewModel? = null
    private var clockSettingsViewModelFactory: ClockSettingsViewModel.Factory? = null

    override fun getCustomizationPreferences(context: Context): CustomizationPreferences {
        return customizationPreferences
            ?: TestDefaultCustomizationPreferences(context).also { customizationPreferences = it }
    }

    override fun getThemeManager(
        provider: ThemeBundleProvider,
        activity: FragmentActivity,
        overlayManagerCompat: OverlayManagerCompat,
        logger: ThemesUserEventLogger
    ): ThemeManager {
        return themeManager
            ?: TestThemeManager(provider, activity, overlayManagerCompat, logger).also {
                themeManager = it
            }
    }

    override fun getPackageStatusNotifier(context: Context): PackageStatusNotifier {
        return packageStatusNotifier
            ?: TestPackageStatusNotifier().also {
                packageStatusNotifier = TestPackageStatusNotifier()
            }
    }

    override fun getDrawableLayerResolver(): DrawableLayerResolver {
        return drawableLayerResolver
            ?: TestDrawableLayerResolver().also { drawableLayerResolver = it }
    }

    override fun getUserEventLogger(context: Context): UserEventLogger {
        return userEventLogger ?: TestThemesUserEventLogger().also { userEventLogger = it }
    }

    override fun getWallpaperInteractor(context: Context): WallpaperInteractor {
        return wallpaperInteractor
            ?: WallpaperInteractor(
                    repository =
                        WallpaperRepository(
                            scope = GlobalScope,
                            client = WallpaperClientImpl(context = context),
                            backgroundDispatcher = Dispatchers.IO,
                        ),
                    shouldHandleReload = {
                        TextUtils.equals(
                            getColorCustomizationManager(context).currentColorSource,
                            ColorOptionsProvider.COLOR_SOURCE_PRESET
                        )
                    }
                )
                .also { wallpaperInteractor = it }
    }

    override fun getKeyguardQuickAffordancePickerInteractor(
        context: Context
    ): KeyguardQuickAffordancePickerInteractor {
        return keyguardQuickAffordancePickerInteractor
            ?: createCustomizationProviderClient(context).also {
                keyguardQuickAffordancePickerInteractor = it
            }
    }

    private fun createCustomizationProviderClient(
        context: Context
    ): KeyguardQuickAffordancePickerInteractor {
        val client: CustomizationProviderClient =
            CustomizationProviderClientImpl(context, Dispatchers.IO)
        return KeyguardQuickAffordancePickerInteractor(
            KeyguardQuickAffordancePickerRepository(client, Dispatchers.IO),
            client
        ) {
            getKeyguardQuickAffordanceSnapshotRestorer(context)
        }
    }

    override fun getFlags(): BaseFlags {
        return flags ?: object : BaseFlags() {}.also { flags = it }
    }

    override fun getSnapshotRestorers(context: Context): Map<Int, SnapshotRestorer> {
        val restorers: MutableMap<Int, SnapshotRestorer> = HashMap()
        restorers[KEY_QUICK_AFFORDANCE_SNAPSHOT_RESTORER] =
            getKeyguardQuickAffordanceSnapshotRestorer(context)
        restorers[KEY_COLOR_PICKER_SNAPSHOT_RESTORER] =
            getColorPickerSnapshotRestorer(context, getWallpaperColorsViewModel())
        return restorers
    }

    /** Returns the [CustomizationProviderClient]. */
    private fun getKeyguardQuickAffordancePickerProviderClient(
        context: Context
    ): CustomizationProviderClient {
        return customizationProviderClient
            ?: CustomizationProviderClientImpl(context, Dispatchers.IO).also {
                customizationProviderClient = it
            }
    }

    private fun getKeyguardQuickAffordanceSnapshotRestorer(
        context: Context
    ): KeyguardQuickAffordanceSnapshotRestorer {
        return keyguardQuickAffordanceSnapshotRestorer
            ?: KeyguardQuickAffordanceSnapshotRestorer(
                    getKeyguardQuickAffordancePickerInteractor(context),
                    getKeyguardQuickAffordancePickerProviderClient(context)
                )
                .also { keyguardQuickAffordanceSnapshotRestorer = it }
    }

    override fun getClockRegistry(context: Context): ClockRegistry {
        return clockRegistry
            ?: ClockRegistryProvider(context, GlobalScope, Dispatchers.Main, Dispatchers.IO)
                .get()
                .also { clockRegistry = it }
    }

    override fun getClockPickerInteractor(context: Context): ClockPickerInteractor {
        return clockPickerInteractor
            ?: ClockPickerInteractor(FakeClockPickerRepository()).also {
                clockPickerInteractor = it
            }
    }

    override fun getClockSectionViewModel(context: Context): ClockSectionViewModel {
        return clockSectionViewModel
            ?: ClockSectionViewModel(context, getClockPickerInteractor(context)).also {
                clockSectionViewModel = it
            }
    }

    private fun getColorPickerRepository(
        context: Context,
        wallpaperColorsViewModel: WallpaperColorsViewModel,
    ): ColorPickerRepository {
        return colorPickerRepository
            ?: ColorPickerRepositoryImpl(
                wallpaperColorsViewModel,
                getColorCustomizationManager(context)
            )
    }

    override fun getColorPickerInteractor(
        context: Context,
        wallpaperColorsViewModel: WallpaperColorsViewModel,
    ): ColorPickerInteractor {
        return colorPickerInteractor
            ?: ColorPickerInteractor(
                    repository = getColorPickerRepository(context, wallpaperColorsViewModel),
                    snapshotRestorer = {
                        getColorPickerSnapshotRestorer(context, wallpaperColorsViewModel)
                    },
                )
                .also { colorPickerInteractor = it }
    }

    override fun getColorPickerViewModelFactory(
        context: Context,
        wallpaperColorsViewModel: WallpaperColorsViewModel,
    ): ColorPickerViewModel.Factory {
        return colorPickerViewModelFactory
            ?: ColorPickerViewModel.Factory(
                    context,
                    getColorPickerInteractor(context, wallpaperColorsViewModel),
                )
                .also { colorPickerViewModelFactory = it }
    }

    private fun getColorPickerSnapshotRestorer(
        context: Context,
        wallpaperColorsViewModel: WallpaperColorsViewModel
    ): ColorPickerSnapshotRestorer {
        return colorPickerSnapshotRestorer
            ?: ColorPickerSnapshotRestorer(
                    getColorPickerInteractor(context, wallpaperColorsViewModel)
                )
                .also { colorPickerSnapshotRestorer = it }
    }

    private fun getColorCustomizationManager(context: Context): ColorCustomizationManager {
        return colorCustomizationManager
            ?: ColorCustomizationManager.getInstance(context, OverlayManagerCompat(context)).also {
                colorCustomizationManager = it
            }
    }

    override fun getClockCarouselViewModel(context: Context): ClockCarouselViewModel {
        return clockCarouselViewModel
            ?: ClockCarouselViewModel(getClockPickerInteractor(context)).also {
                clockCarouselViewModel = it
            }
    }

    override fun getClockViewFactory(activity: Activity): ClockViewFactory {
        return clockViewFactory
            ?: ClockViewFactory(activity, getClockRegistry(activity)).also { clockViewFactory = it }
    }

    override fun getClockSettingsViewModelFactory(
        context: Context,
        wallpaperColorsViewModel: WallpaperColorsViewModel,
    ): ClockSettingsViewModel.Factory {
        return clockSettingsViewModelFactory
            ?: ClockSettingsViewModel.Factory(
                    context,
                    getClockPickerInteractor(context),
                    getColorPickerInteractor(
                        context,
                        wallpaperColorsViewModel,
                    ),
                )
                .also { clockSettingsViewModelFactory = it }
    }

    companion object {
        private const val KEY_QUICK_AFFORDANCE_SNAPSHOT_RESTORER = 1
        private const val KEY_COLOR_PICKER_SNAPSHOT_RESTORER =
            KEY_QUICK_AFFORDANCE_SNAPSHOT_RESTORER + 1
    }
}