package com.tangem.tap

import android.annotation.SuppressLint
import android.content.Intent
import android.content.pm.ActivityInfo
import android.content.res.Configuration
import android.os.Build
import android.os.Bundle
import android.view.MotionEvent
import android.view.WindowManager
import androidx.activity.SystemBarStyle
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.activity.viewModels
import androidx.annotation.StringRes
import androidx.appcompat.app.AppCompatActivity
import androidx.appcompat.app.AppCompatDelegate
import androidx.appcompat.app.AppCompatDelegate.setDefaultNightMode
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.graphics.toArgb
import androidx.compose.ui.platform.ViewCompositionStrategy
import androidx.coordinatorlayout.widget.CoordinatorLayout
import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
import androidx.lifecycle.Lifecycle
import androidx.lifecycle.flowWithLifecycle
import androidx.lifecycle.lifecycleScope
import arrow.core.getOrElse
import by.kirich1409.viewbindingdelegate.viewBinding
import com.arkivanov.decompose.value.observe
import com.arkivanov.essenty.lifecycle.asEssentyLifecycle
import com.google.android.material.snackbar.BaseTransientBottomBar
import com.google.android.material.snackbar.Snackbar
import com.tangem.common.routing.AppRoute
import com.tangem.common.routing.entity.SerializableIntent
import com.tangem.core.analytics.api.AnalyticsEventHandler
import com.tangem.core.decompose.context.AppComponentContext
import com.tangem.core.decompose.di.RootAppComponentContext
import com.tangem.core.deeplink.DeepLinksRegistry
import com.tangem.core.navigation.email.EmailSender
import com.tangem.core.ui.UiDependencies
import com.tangem.core.ui.extensions.TextReference
import com.tangem.core.ui.extensions.resolveReference
import com.tangem.core.ui.message.EventMessageEffect
import com.tangem.core.ui.message.SnackbarMessage
import com.tangem.core.ui.res.TangemColorPalette
import com.tangem.core.ui.res.TangemTheme
import com.tangem.data.balancehiding.DefaultDeviceFlipDetector
import com.tangem.data.card.sdk.CardSdkOwner
import com.tangem.domain.apptheme.model.AppThemeMode
import com.tangem.domain.card.ScanCardUseCase
import com.tangem.domain.card.repository.CardRepository
import com.tangem.domain.card.repository.CardSdkConfigRepository
import com.tangem.domain.settings.SetGooglePayAvailabilityUseCase
import com.tangem.domain.settings.SetGoogleServicesAvailabilityUseCase
import com.tangem.domain.settings.ShouldInitiallyAskPermissionUseCase
import com.tangem.domain.settings.repositories.SettingsRepository
import com.tangem.domain.staking.SendUnsubmittedHashesUseCase
import com.tangem.domain.tokens.GetPolkadotCheckHasImmortalUseCase
import com.tangem.domain.tokens.GetPolkadotCheckHasResetUseCase
import com.tangem.domain.wallets.legacy.UserWalletsListManager
import com.tangem.feature.wallet.presentation.wallet.analytics.WalletScreenAnalyticsEvent
import com.tangem.features.onboarding.v2.OnboardingV2FeatureToggles
import com.tangem.features.pushnotifications.api.navigation.PushNotificationsRouter
import com.tangem.features.pushnotifications.api.utils.PUSH_PERMISSION
import com.tangem.features.wallet.navigation.WalletRouter
import com.tangem.google.GoogleServicesHelper
import com.tangem.operations.backup.BackupService
import com.tangem.sdk.api.BackupServiceHolder
import com.tangem.sdk.api.TangemSdkManager
import com.tangem.sdk.extensions.init
import com.tangem.tap.common.ActivityResultCallbackHolder
import com.tangem.tap.common.DialogManager
import com.tangem.tap.common.OnActivityResultCallback
import com.tangem.tap.common.SnackbarHandler
import com.tangem.tap.common.apptheme.MutableAppThemeModeHolder
import com.tangem.tap.common.extensions.dispatchNavigationAction
import com.tangem.tap.common.extensions.showFragmentAllowingStateLoss
import com.tangem.tap.common.redux.NotificationsHandler
import com.tangem.tap.domain.walletconnect2.domain.WalletConnectInteractor
import com.tangem.tap.features.intentHandler.IntentProcessor
import com.tangem.tap.features.intentHandler.handlers.BackgroundScanIntentHandler
import com.tangem.tap.features.intentHandler.handlers.OnPushClickedIntentHandler
import com.tangem.tap.features.intentHandler.handlers.WalletConnectLinkIntentHandler
import com.tangem.tap.features.main.MainViewModel
import com.tangem.tap.features.onboarding.products.wallet.redux.BackupAction
import com.tangem.tap.proxy.AppStateHolder
import com.tangem.tap.proxy.redux.DaggerGraphAction
import com.tangem.tap.routing.component.RoutingComponent
import com.tangem.tap.routing.configurator.AppRouterConfig
import com.tangem.tap.routing.toggle.RoutingFeatureToggles
import com.tangem.utils.coroutines.CoroutineDispatcherProvider
import com.tangem.utils.coroutines.FeatureCoroutineExceptionHandler
import com.tangem.wallet.R
import com.tangem.wallet.databinding.ActivityMainBinding
import dagger.hilt.android.AndroidEntryPoint
import kotlinx.coroutines.*
import kotlinx.coroutines.flow.*
import timber.log.Timber
import javax.inject.Inject
import kotlin.coroutines.CoroutineContext
import kotlin.time.Duration.Companion.seconds

lateinit var tangemSdkManager: TangemSdkManager
lateinit var backupService: BackupService
internal var lockUserWalletsTimer: LockUserWalletsTimer? = null
    private set
var notificationsHandler: NotificationsHandler? = null

private val coroutineContext: CoroutineContext
    get() = Job() + Dispatchers.IO + FeatureCoroutineExceptionHandler.create("scope")
val scope = CoroutineScope(coroutineContext)

private val mainCoroutineContext: CoroutineContext
    get() = Job() + Dispatchers.Main + FeatureCoroutineExceptionHandler.create("mainScope")
val mainScope = CoroutineScope(mainCoroutineContext)

@Suppress("LargeClass")
@AndroidEntryPoint
class MainActivity : AppCompatActivity(), SnackbarHandler, ActivityResultCallbackHolder {

    @Inject
    lateinit var appStateHolder: AppStateHolder

    /** Router for opening tester menu */
    @Inject
    lateinit var cardSdkOwner: CardSdkOwner

    @Inject
    lateinit var cardSdkConfigRepository: CardSdkConfigRepository

    @Inject
    lateinit var injectedTangemSdkManager: TangemSdkManager

    @Inject
    lateinit var scanCardUseCase: ScanCardUseCase

    @Inject
    lateinit var walletRouter: WalletRouter

    @Inject
    lateinit var walletConnectInteractor: WalletConnectInteractor

    @Inject
    lateinit var deepLinksRegistry: DeepLinksRegistry

    @Inject
    lateinit var settingsRepository: SettingsRepository

    @Inject
    lateinit var sendUnsubmittedHashesUseCase: SendUnsubmittedHashesUseCase

    @Inject
    lateinit var getPolkadotCheckHasResetUseCase: GetPolkadotCheckHasResetUseCase

    @Inject
    lateinit var getPolkadotCheckHasImmortalUseCase: GetPolkadotCheckHasImmortalUseCase

    @Inject
    lateinit var analyticsEventsHandler: AnalyticsEventHandler

    @Inject
    lateinit var userWalletsListManager: UserWalletsListManager

    @Inject
    lateinit var emailSender: EmailSender

    @Inject
    @RootAppComponentContext
    internal lateinit var rootComponentContext: AppComponentContext

    @Inject
    internal lateinit var appRouterConfig: AppRouterConfig

    @Inject
    internal lateinit var routingComponentFactory: RoutingComponent.Factory

    @Inject
    lateinit var pushNotificationsRouter: PushNotificationsRouter

    @Inject
    lateinit var cardRepository: CardRepository

    @Inject
    lateinit var shouldInitiallyAskPermissionUseCase: ShouldInitiallyAskPermissionUseCase

    @Inject
    lateinit var backupServiceHolder: BackupServiceHolder

    @Inject
    lateinit var onboardingV2FeatureToggles: OnboardingV2FeatureToggles

    @Inject
    lateinit var setGoogleServicesAvailabilityUseCase: SetGoogleServicesAvailabilityUseCase

    @Inject
    lateinit var setGooglePayAvailabilityUseCase: SetGooglePayAvailabilityUseCase

    @Inject
    lateinit var dispatchers: CoroutineDispatcherProvider

    @Inject
    internal lateinit var routingFeatureToggles: RoutingFeatureToggles

    @Inject
    internal lateinit var uiDependencies: UiDependencies

    @Inject
    internal lateinit var defaultDeviceFlipDetector: DefaultDeviceFlipDetector

    internal val viewModel: MainViewModel by viewModels()

    private lateinit var appThemeModeFlow: SharedFlow<AppThemeMode>

    // TODO: fixme: inject through DI
    private val intentProcessor: IntentProcessor = IntentProcessor()

    private var snackbar: Snackbar? = null
    private val dialogManager = DialogManager()
    private val binding: ActivityMainBinding by viewBinding(ActivityMainBinding::bind)

    private val onActivityResultCallbacks = mutableListOf<OnActivityResultCallback>()

    override fun onCreate(savedInstanceState: Bundle?) {
        // We need to call it before onCreate to prevent unnecessary activity recreation
        installAppTheme()

        val splashScreen = installSplashScreen()

        enableEdgeToEdge(
            navigationBarStyle = SystemBarStyle.auto(
                Color.Transparent.toArgb(),
                Color.Transparent.toArgb(),
            ),
        )

        super.onCreate(savedInstanceState)

        // We have to allow adjust_resize (can only be specified in the manifest) for Android <=10,
        // in order for imePadding to work correctly
        // for Android 11+ we set SOFT_INPUT_ADJUST_NOTHING to prevent resizing the layout
        // so that we don't have any distortions in the layout when displaying the keyboard
        // https://issuetracker.google.com/issues/266331465
        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.Q) {
            window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING)
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
            window.setHideOverlayWindows(true)
        }

        splashScreen.setKeepOnScreenCondition { viewModel.isSplashScreenShown }

        installActivityDependencies()
        observeAppThemeModeUpdates()

        if (routingFeatureToggles.isNavigationRefactoringEnabled) {
            setRootContent()
        } else {
            setContentView(R.layout.activity_main)
            installRouting()
            installEventMessageEffect()
        }

        initContent()

        observePolkadotAccountHealthCheck()
        sendStakingUnsubmittedHashes()
        checkGoogleServicesAvailability()

        if (intent != null && savedInstanceState == null) {
            // handle intent only on start, not on recreate
            deepLinksRegistry.launch(intent)
        }

        lifecycle.addObserver(WindowObscurationObserver)
        lifecycle.addObserver(defaultDeviceFlipDetector)
    }

    private fun installEventMessageEffect() {
        binding.composeView.setViewCompositionStrategy(ViewCompositionStrategy.DisposeOnViewTreeLifecycleDestroyed)
        binding.composeView.setContent {
            TangemTheme(
                activity = this,
                uiDependencies = uiDependencies,
                overrideSystemBarColors = false,
            ) {
                EventMessageEffect(
                    onShowSnackbar = { message, _ ->
                        showSnackbar(
                            text = message.message.resolveReference(resources),
                            length = when (message.duration) {
                                SnackbarMessage.Duration.Short -> Snackbar.LENGTH_SHORT
                                SnackbarMessage.Duration.Long -> Snackbar.LENGTH_LONG
                                SnackbarMessage.Duration.Indefinite -> Snackbar.LENGTH_INDEFINITE
                            },
                            buttonTitle = message.actionLabel?.resolveReference(resources),
                            action = message.action,
                            onDismiss = message.onDismissRequest,
                        )
                    },
                )
            }
        }
    }

    private fun setRootContent() {
        val routingComponent = routingComponentFactory.create(
            context = rootComponentContext,
        )

        setContent {
            routingComponent.Content(Modifier.fillMaxSize())
        }
    }

    private fun installRouting() {
        val routingComponent = routingComponentFactory.create(
            context = rootComponentContext,
        )

        appRouterConfig.routerScope = lifecycleScope
        appRouterConfig.componentRouter = routingComponent.router
        appRouterConfig.snackbarHandler = this

        routingComponent.stack.observe(lifecycle.asEssentyLifecycle()) { childStack ->
            val stack = childStack.backStack
                .plus(childStack.active)
                .map { it.configuration }

            if (stack == appRouterConfig.stack) return@observe

            appRouterConfig.stack = stack

            when (val child = childStack.active.instance) {
                is RoutingComponent.Child.Initial -> Unit
                is RoutingComponent.Child.LegacyFragment -> {
                    supportFragmentManager.showFragmentAllowingStateLoss(child.name, child.fragmentProvider)
                }
                is RoutingComponent.Child.LegacyIntent -> {
                    startActivity(child.intent)
                }
                is RoutingComponent.Child.ComposableComponent -> error("Unsupported child: $child")
            }
        }
    }

    private fun installActivityDependencies() {
        cardSdkOwner.register(activity = this)
        tangemSdkManager = injectedTangemSdkManager

        if (onboardingV2FeatureToggles.isOnboardingV2Enabled) {
            backupServiceHolder.createAndSetService(cardSdkConfigRepository.sdk, this)
            backupService = backupServiceHolder.backupService.get()!! // will be deleted eventually
        } else {
            backupService = BackupService.init(cardSdkConfigRepository.sdk, this)
        }

        lockUserWalletsTimer = LockUserWalletsTimer(
            owner = this,
            settingsRepository = settingsRepository,
            userWalletsListManager = userWalletsListManager,
        )

        initIntentHandlers()

        store.dispatch(
            DaggerGraphAction.SetActivityDependencies(
                scanCardUseCase = scanCardUseCase,
                walletConnectInteractor = walletConnectInteractor,
                cardSdkConfigRepository = cardSdkConfigRepository,
            ),
        )
    }

    private fun installAppTheme() {
        appThemeModeFlow = createAppThemeModeFlow()
        val mode = runBlocking {
            withTimeoutOrNull(APP_THEME_LOAD_TIMEOUT.seconds) {
                appThemeModeFlow.first()
            } ?: AppThemeMode.DEFAULT
        }

        updateAppTheme(mode)
    }

    private fun observeAppThemeModeUpdates() {
        appThemeModeFlow
            .flowWithLifecycle(lifecycle)
            .onEach(::updateAppTheme)
            .launchIn(lifecycleScope)
    }

    @SuppressLint("SourceLockedOrientationActivity")
    private fun initContent() {
        supportFragmentManager.registerFragmentLifecycleCallbacks(
            NavBarInsetsFragmentLifecycleCallback(),
            true,
        )

        requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
    }

    private fun createAppThemeModeFlow(): SharedFlow<AppThemeMode> {
        val tangemApplication = application as TangemApplication

        return tangemApplication.getAppThemeModeUseCase()
            .filterNotNull()
            .distinctUntilChanged()
            .map { maybeMode ->
                maybeMode.getOrElse { AppThemeMode.DEFAULT }
            }
            .shareIn(
                scope = lifecycleScope,
                started = SharingStarted.WhileSubscribed(stopTimeoutMillis = 5_000),
            )
    }

    override fun onStart() {
        super.onStart()
        dialogManager.onStart(this)
    }

    override fun onResume() {
        super.onResume()

        if (!routingFeatureToggles.isNavigationRefactoringEnabled) {
            // TODO: RESEARCH! NotificationsHandler is created in onResume and destroyed in onStop
            notificationsHandler = NotificationsHandler(binding.fragmentContainer)
        }

        navigateToInitialScreenIfNeeded(intent)
    }

    override fun onStop() {
        notificationsHandler = null
        dialogManager.onStop()
        super.onStop()
    }

    override fun onDestroy() {
        intentProcessor.removeAll()
        super.onDestroy()
    }

    private fun initIntentHandlers() {
        val hasSavedWalletsProvider = { userWalletsListManager.hasUserWallets }
        intentProcessor.addHandler(OnPushClickedIntentHandler(analyticsEventsHandler))
        intentProcessor.addHandler(BackgroundScanIntentHandler(hasSavedWalletsProvider, lifecycleScope))
        intentProcessor.addHandler(WalletConnectLinkIntentHandler())
    }

    private fun updateAppTheme(appThemeMode: AppThemeMode) {
        val mode = when (appThemeMode) {
            AppThemeMode.FORCE_DARK -> AppCompatDelegate.MODE_NIGHT_YES
            AppThemeMode.FORCE_LIGHT -> AppCompatDelegate.MODE_NIGHT_NO
            AppThemeMode.FOLLOW_SYSTEM -> AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM
        }

        setDefaultNightMode(mode)

        MutableAppThemeModeHolder.value = appThemeMode
        MutableAppThemeModeHolder.isDarkThemeActive = isDarkTheme()
    }

    override fun onConfigurationChanged(newConfig: Configuration) {
        super.onConfigurationChanged(newConfig)

        /*
         * We need to manually change the background color of the activity when the UI mode changes to prevent
         * flickering when navigating between fragments.
         *

         * `android:configChanges="uiMode"` is set in the manifest.
         * */
        updateAppBackground()
    }

    private fun updateAppBackground() {
        val backgroundColor = if (isDarkTheme()) {
            TangemColorPalette.Dark6
        } else {
            TangemColorPalette.White
        }

        findViewById<CoordinatorLayout>(R.id.fragment_container).setBackgroundColor(backgroundColor.toArgb())
    }

    private fun isDarkTheme(): Boolean {
        return when (resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK) {
            Configuration.UI_MODE_NIGHT_YES -> true
            Configuration.UI_MODE_NIGHT_NO -> false
            Configuration.UI_MODE_NIGHT_UNDEFINED -> false
            else -> false
        }
    }

    override fun onNewIntent(intent: Intent?) {
        super.onNewIntent(intent)

        lifecycleScope.launch {
            intentProcessor.handleIntent(intent = intent, isFromForeground = true)
        }

        if (intent != null) {
            deepLinksRegistry.launch(intent)
        }
    }

    override fun showSnackbar(@StringRes text: Int, length: Int, @StringRes buttonTitle: Int?, action: (() -> Unit)?) {
        showSnackbar(
            getString(text),
            length,
            buttonTitle?.let(::getString),
            action = { action?.invoke() },
        )
    }

    override fun showSnackbar(text: TextReference, length: Int, buttonTitle: TextReference?, action: (() -> Unit)?) {
        showSnackbar(
            text = text.resolveReference(resources),
            length = length,
            buttonTitle = buttonTitle?.resolveReference(resources),
            action = { action?.invoke() },
        )
    }

    override fun dismissSnackbar() {
        snackbar?.dismiss()
        snackbar = null
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)

        onActivityResultCallbacks.forEach { it(requestCode, resultCode, data) }
    }

    override fun addOnActivityResultCallback(callback: OnActivityResultCallback) {
        onActivityResultCallbacks.remove(callback)
        onActivityResultCallbacks.add(callback)
    }

    override fun removeOnActivityResultCallback(callback: OnActivityResultCallback) {
        onActivityResultCallbacks.remove(callback)
    }

    override fun onUserInteraction() {
        super.onUserInteraction()

        lockUserWalletsTimer?.restart()
    }

    override fun dispatchTouchEvent(event: MotionEvent): Boolean {
        val result = WindowObscurationObserver.dispatchTouchEvent(event, analyticsEventsHandler)

        return if (result) super.dispatchTouchEvent(event) else false
    }

    private fun showSnackbar(
        text: String,
        length: Int,
        buttonTitle: String?,
        action: (() -> Unit)? = null,
        onDismiss: () -> Unit = {},
    ) {
        if (snackbar != null) return

        snackbar = Snackbar.make(binding.fragmentContainer, text, length).apply {
            val textColor = getColor(R.color.text_primary_2)

            setBackgroundTint(getColor(R.color.button_primary))
            setActionTextColor(textColor)
            setTextColor(textColor)

            if (buttonTitle != null && action != null) {
                setAction(buttonTitle, { action() })
            }

            addCallback(
                object : BaseTransientBottomBar.BaseCallback<Snackbar>() {
                    override fun onDismissed(transientBottomBar: Snackbar?, event: Int) {
                        onDismiss()
                        snackbar = null
                        removeCallback(this)
                    }
                },
            )
        }

        snackbar?.show()
    }

    private fun navigateToInitialScreenIfNeeded(intentWhichStartedActivity: Intent?) {
        val backStack = appRouterConfig.stack ?: emptyList()
        // TODO move inital navigation to navigation component ([REDACTED_JIRA])
        val isOnlyInitialRoute = backStack.all { it is AppRoute.Initial }
        val isOnInitialScreen = backStack.all { it is AppRoute.Welcome || it is AppRoute.Home }
        val isNotScannedBefore = store.state.globalState.scanResponse == null
        val isOnboardingServiceNotActive = !store.state.globalState.onboardingState.onboardingStarted

        when {
            !isOnInitialScreen && isNotScannedBefore && isOnboardingServiceNotActive -> {
                navigateToInitialScreen(intentWhichStartedActivity)
            }
            backStack.isEmpty() -> {
                navigateToInitialScreen(intentWhichStartedActivity)
            }
            isOnlyInitialRoute -> navigateToInitialScreen(intentWhichStartedActivity)
            else -> Unit
        }
    }

    private fun navigateToInitialScreen(intentWhichStartedActivity: Intent?) {
        if (userWalletsListManager.isLockable && userWalletsListManager.hasUserWallets) {
            store.dispatchNavigationAction {
                replaceAll(AppRoute.Welcome(intentWhichStartedActivity?.let(::SerializableIntent)))
            }
            intentProcessor.handleIntent(
                intent = intentWhichStartedActivity,
                isFromForeground = false,
                skipNavigationHandlers = true,
            )
        } else {
            lifecycleScope.launch {
                val shouldShowTos = !cardRepository.isTangemTOSAccepted()
                val shouldShowInitialPush = shouldInitiallyAskPermissionUseCase(PUSH_PERMISSION).getOrElse { false }

                val route = when {
                    shouldShowTos -> AppRoute.Disclaimer(isTosAccepted = false)
                    shouldShowInitialPush -> AppRoute.PushNotification
                    else -> AppRoute.Home
                }

                store.dispatchNavigationAction { replaceAll(route) }
                intentProcessor.handleIntent(
                    intent = intentWhichStartedActivity,
                    isFromForeground = false,
                    skipNavigationHandlers = false,
                )
            }
        }

        store.dispatch(BackupAction.CheckForUnfinishedBackup)
    }

    private fun observePolkadotAccountHealthCheck() {
        lifecycleScope.launch {
            getPolkadotCheckHasResetUseCase()
                .flowWithLifecycle(lifecycle, minActiveState = Lifecycle.State.CREATED)
                .distinctUntilChanged()
                .collect {
                    analyticsEventsHandler.send(WalletScreenAnalyticsEvent.Token.PolkadotAccountReset(it.second))
                }
        }
        lifecycleScope.launch {
            getPolkadotCheckHasImmortalUseCase()
                .flowWithLifecycle(lifecycle, minActiveState = Lifecycle.State.CREATED)
                .distinctUntilChanged()
                .collect {
                    analyticsEventsHandler.send(
                        WalletScreenAnalyticsEvent.Token.PolkadotImmortalTransactions(it.second),
                    )
                }
        }
    }

    private fun sendStakingUnsubmittedHashes() {
        lifecycleScope.launch {
            sendUnsubmittedHashesUseCase.invoke()
                .onLeft { Timber.e(it.toString()) }
                .onRight { Timber.d("Submitting hashes succeeded") }
        }
    }

    private fun checkGoogleServicesAvailability() {
        val isGoogleServicesAvailable = GoogleServicesHelper.checkGoogleServicesAvailability(this)

        lifecycleScope.launch {
            setGoogleServicesAvailabilityUseCase(isGoogleServicesAvailable)

            if (isGoogleServicesAvailable) {
                val paymentsClient = GoogleServicesHelper.createPaymentsClient(this@MainActivity)
                val isGooglePayAvailable = GoogleServicesHelper.checkGooglePayAvailability(paymentsClient)
                setGooglePayAvailabilityUseCase(isGooglePayAvailable)
            } else {
                setGooglePayAvailabilityUseCase(false)
            }
        }
    }

    companion object {
        private const val APP_THEME_LOAD_TIMEOUT = 2
    }
}