Updated on 2026-08-14
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Tangem
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6 changed files with 358 additions and 0 deletions
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@ -1,6 +1,55 @@
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package com.tangem.features.swap.v2.impl.common
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import com.tangem.core.ui.extensions.TextReference
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import com.tangem.core.ui.extensions.resourceReference
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import com.tangem.core.ui.extensions.wrappedList
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import com.tangem.core.ui.format.bigdecimal.format
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import com.tangem.core.ui.format.bigdecimal.simple
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import com.tangem.domain.express.models.ExpressError
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import com.tangem.features.swap.v2.impl.R
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internal object SwapUtils {
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const val INCREASE_GAS_LIMIT_FOR_DEX = 112 // 12%
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const val INCREASE_GAS_LIMIT_FOR_CEX = 105 // 5%
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fun getExpressErrorMessage(expressError: ExpressError): TextReference {
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return when (expressError) {
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is ExpressError.InternalError -> resourceReference(
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id = R.string.express_error_swap_unavailable,
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formatArgs = wrappedList(expressError.code),
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)
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is ExpressError.ExchangeNotPossibleError -> resourceReference(
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id = R.string.warning_express_pair_unavailable_message,
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formatArgs = wrappedList(expressError.code),
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)
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is ExpressError.UnknownError -> resourceReference(R.string.common_unknown_error)
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is ExpressError.ProviderNotActiveError,
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is ExpressError.ProviderNotFoundError,
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is ExpressError.ProviderNotAvailableError,
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is ExpressError.ProviderInternalError,
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-> resourceReference(
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id = R.string.express_error_swap_pair_unavailable,
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formatArgs = wrappedList(expressError.code),
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)
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is ExpressError.ProviderDifferentAmountError -> resourceReference(
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R.string.express_error_provider_amount_roundup,
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formatArgs = wrappedList(
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expressError.code,
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expressError.fromProviderAmount.format { simple(decimals = expressError.decimals) },
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),
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)
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else -> resourceReference(R.string.express_error_code, wrappedList(expressError.code.toString()))
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}
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}
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internal fun getExpressErrorTitle(expressError: ExpressError): TextReference {
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return when (expressError) {
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is ExpressError.ExchangeNotPossibleError -> resourceReference(
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id = R.string.warning_express_pair_unavailable_title,
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formatArgs = wrappedList(expressError.code),
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)
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is ExpressError.UnknownError -> resourceReference(R.string.common_error)
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else -> resourceReference(R.string.warning_express_refresh_required_title)
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}
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}
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}
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@ -0,0 +1,45 @@
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package com.tangem.features.swap.v2.impl.notifications
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import androidx.compose.foundation.lazy.LazyListScope
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import androidx.compose.ui.Modifier
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import com.tangem.common.ui.notifications.NotificationUM
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import com.tangem.common.ui.notifications.notifications
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import com.tangem.core.decompose.context.AppComponentContext
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import com.tangem.core.decompose.model.getOrCreateModel
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import com.tangem.domain.express.models.ExpressError
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import com.tangem.domain.models.currency.CryptoCurrency
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import com.tangem.features.swap.v2.impl.notifications.model.SwapNotificationsModel
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import kotlinx.collections.immutable.ImmutableList
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import kotlinx.coroutines.flow.StateFlow
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internal class SwapNotificationsComponent(
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appComponentContext: AppComponentContext,
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params: Params,
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) : AppComponentContext by appComponentContext {
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private val model: SwapNotificationsModel = getOrCreateModel(params)
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val state: StateFlow<ImmutableList<NotificationUM>> = model.uiState
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fun LazyListScope.content(
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state: ImmutableList<NotificationUM>,
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modifier: Modifier = Modifier,
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hasPaddingAbove: Boolean = false,
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isClickDisabled: Boolean = false,
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) {
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notifications(
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notifications = state,
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modifier = modifier,
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hasPaddingAbove = hasPaddingAbove,
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isClickDisabled = isClickDisabled,
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)
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}
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data class Params(
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val swapNotificationData: SwapNotificationData,
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) {
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data class SwapNotificationData(
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val expressError: ExpressError?,
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val fromCryptoCurrency: CryptoCurrency?,
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)
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}
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}
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@ -0,0 +1,45 @@
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package com.tangem.features.swap.v2.impl.notifications
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsComponent.Params.SwapNotificationData
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.MutableSharedFlow
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import kotlinx.coroutines.flow.SharedFlow
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import javax.inject.Inject
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import javax.inject.Singleton
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internal interface SwapNotificationsUpdateListener {
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/** Flow triggers swap notifications update */
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val updateTriggerFlow: Flow<SwapNotificationData>
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/** Flow returns whether there is swap error notifications */
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val hasErrorFlow: Flow<Boolean>
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}
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internal interface SwapNotificationsUpdateTrigger {
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/** Trigger return callback with check result */
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suspend fun callbackHasError(hasError: Boolean)
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/** Trigger check swap notifications */
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suspend fun triggerUpdate(data: SwapNotificationData)
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}
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@Singleton
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internal class DefaultSwapNotificationsUpdateTrigger @Inject constructor() :
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SwapNotificationsUpdateListener,
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SwapNotificationsUpdateTrigger {
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override val updateTriggerFlow: SharedFlow<SwapNotificationData>
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field = MutableSharedFlow<SwapNotificationData>()
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override val hasErrorFlow: SharedFlow<Boolean>
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field = MutableSharedFlow<Boolean>()
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override suspend fun callbackHasError(hasError: Boolean) {
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hasErrorFlow.emit(hasError)
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}
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override suspend fun triggerUpdate(data: SwapNotificationData) {
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updateTriggerFlow.emit(data)
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}
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}
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package com.tangem.features.swap.v2.impl.notifications.di
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import com.tangem.core.decompose.di.ModelComponent
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import com.tangem.core.decompose.model.Model
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import com.tangem.features.swap.v2.impl.notifications.DefaultSwapNotificationsUpdateTrigger
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsUpdateListener
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsUpdateTrigger
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import com.tangem.features.swap.v2.impl.notifications.model.SwapNotificationsModel
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import dagger.Binds
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import dagger.Module
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import dagger.hilt.InstallIn
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import dagger.hilt.components.SingletonComponent
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import dagger.multibindings.ClassKey
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import dagger.multibindings.IntoMap
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import javax.inject.Singleton
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@Module
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@InstallIn(ModelComponent::class)
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internal interface SwapNotificationsModule {
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@Binds
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@IntoMap
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@ClassKey(SwapNotificationsModel::class)
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fun provideSwapNotificationsModel(impl: SwapNotificationsModel): Model
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}
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@Module
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@InstallIn(SingletonComponent::class)
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internal interface SwapNotificationsSingletonModule {
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@Singleton
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@Binds
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fun bindsSwapNotificationsUpdateTrigger(impl: DefaultSwapNotificationsUpdateTrigger): SwapNotificationsUpdateTrigger
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@Singleton
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@Binds
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fun bindsSwapNotificationsUpdateListener(
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impl: DefaultSwapNotificationsUpdateTrigger,
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): SwapNotificationsUpdateListener
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}
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package com.tangem.features.swap.v2.impl.notifications.entity
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import com.tangem.common.ui.R
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import com.tangem.common.ui.notifications.NotificationUM
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import com.tangem.core.ui.components.notifications.NotificationConfig
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import com.tangem.core.ui.extensions.TextReference
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import com.tangem.core.ui.extensions.resourceReference
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import com.tangem.core.ui.extensions.wrappedList
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import com.tangem.domain.express.models.ExpressError
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import com.tangem.features.swap.v2.impl.common.SwapUtils.getExpressErrorMessage
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import com.tangem.features.swap.v2.impl.common.SwapUtils.getExpressErrorTitle
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internal object SwapNotificationUM {
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sealed class Error(
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title: TextReference,
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subtitle: TextReference,
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iconResId: Int = R.drawable.ic_alert_24,
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buttonState: NotificationConfig.ButtonsState? = null,
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onCloseClick: (() -> Unit)? = null,
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) : NotificationUM.Error(
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title = title,
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subtitle = subtitle,
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iconResId = iconResId,
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buttonState = buttonState,
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onCloseClick = onCloseClick,
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) {
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data class MinimalAmountError(
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val amount: String,
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) : Error(
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title = resourceReference(
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id = R.string.warning_express_too_minimal_amount_title,
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formatArgs = wrappedList(amount),
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),
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subtitle = resourceReference(R.string.warning_express_wrong_amount_description),
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)
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data class MaximumAmountError(
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val amount: String,
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) : Error(
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title = resourceReference(
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id = R.string.warning_express_too_maximum_amount_title,
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formatArgs = wrappedList(amount),
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),
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subtitle = resourceReference(R.string.warning_express_wrong_amount_description),
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iconResId = R.drawable.ic_alert_circle_24,
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)
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data object FCAWarningList : Error(
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title = resourceReference(R.string.warning_express_providers_fca_warning_title),
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subtitle = resourceReference(R.string.warning_express_providers_fca_warning_description),
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iconResId = R.drawable.ic_alert_circle_24,
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)
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}
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sealed class Warning(
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title: TextReference,
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subtitle: TextReference,
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iconResId: Int = R.drawable.img_attention_20,
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buttonsState: NotificationConfig.ButtonsState? = null,
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onCloseClick: (() -> Unit)? = null,
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) : NotificationUM.Warning(
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title = title,
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subtitle = subtitle,
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iconResId = iconResId,
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buttonsState = buttonsState,
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onCloseClick = onCloseClick,
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) {
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data class ExpressGeneralError(
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val expressError: ExpressError,
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val onConfirmClick: () -> Unit,
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) : Warning(
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title = getExpressErrorTitle(expressError),
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subtitle = getExpressErrorMessage(expressError),
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buttonsState = NotificationConfig.ButtonsState.SecondaryButtonConfig(
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text = resourceReference(R.string.warning_button_refresh),
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onClick = onConfirmClick,
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),
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)
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}
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}
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package com.tangem.features.swap.v2.impl.notifications.model
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import com.tangem.common.ui.notifications.NotificationUM
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import com.tangem.core.decompose.di.ModelScoped
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import com.tangem.core.decompose.model.Model
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import com.tangem.core.decompose.model.ParamsContainer
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import com.tangem.core.ui.format.bigdecimal.crypto
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import com.tangem.core.ui.format.bigdecimal.format
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import com.tangem.domain.express.models.ExpressError
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import com.tangem.features.swap.v2.impl.notifications.DefaultSwapNotificationsUpdateTrigger
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsComponent
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsComponent.Params.SwapNotificationData
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import com.tangem.features.swap.v2.impl.notifications.SwapNotificationsUpdateListener
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import com.tangem.features.swap.v2.impl.notifications.entity.SwapNotificationUM
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import com.tangem.utils.coroutines.CoroutineDispatcherProvider
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import kotlinx.collections.immutable.ImmutableList
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import kotlinx.collections.immutable.persistentListOf
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import kotlinx.collections.immutable.toImmutableList
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.StateFlow
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import kotlinx.coroutines.flow.launchIn
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import kotlinx.coroutines.flow.onEach
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import kotlinx.coroutines.launch
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import javax.inject.Inject
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@ModelScoped
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internal class SwapNotificationsModel @Inject constructor(
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override val dispatchers: CoroutineDispatcherProvider,
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private val swapNotificationsUpdateListener: SwapNotificationsUpdateListener,
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private val swapNotificationsUpdateTrigger: DefaultSwapNotificationsUpdateTrigger,
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paramsContainer: ParamsContainer,
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) : Model() {
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private val params: SwapNotificationsComponent.Params = paramsContainer.require()
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private var notificationData = params.swapNotificationData
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val uiState: StateFlow<ImmutableList<NotificationUM>>
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field = MutableStateFlow<ImmutableList<NotificationUM>>(persistentListOf())
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init {
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subscribeToNotificationUpdateTrigger()
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modelScope.launch {
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buildNotifications()
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}
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}
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private fun subscribeToNotificationUpdateTrigger() {
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swapNotificationsUpdateListener.updateTriggerFlow
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.onEach { updateState(it) }
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.launchIn(modelScope)
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}
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private suspend fun updateState(data: SwapNotificationData) {
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notificationData = data
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buildNotifications()
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}
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private suspend fun buildNotifications() {
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val notifications = buildList {
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addExpressErrorNotification()
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}
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swapNotificationsUpdateTrigger.callbackHasError(notifications.isNotEmpty())
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uiState.value = notifications.toImmutableList()
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}
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fun MutableList<NotificationUM>.addExpressErrorNotification() {
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val expressError = notificationData.expressError ?: return
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val fromCryptoCurrency = notificationData.fromCryptoCurrency ?: return
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val errorNotification = when (expressError) {
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is ExpressError.AmountError.TooSmallError -> SwapNotificationUM.Error.MinimalAmountError(
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expressError.amount.format {
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crypto(
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symbol = fromCryptoCurrency.symbol,
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decimals = fromCryptoCurrency.decimals,
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)
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},
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)
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is ExpressError.AmountError.TooBigError -> SwapNotificationUM.Error.MaximumAmountError(
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expressError.amount.format {
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crypto(
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symbol = fromCryptoCurrency.symbol,
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decimals = fromCryptoCurrency.decimals,
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)
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},
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)
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else -> SwapNotificationUM.Warning.ExpressGeneralError(
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expressError = expressError,
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onConfirmClick = {
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// todo reload quotes
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},
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)
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}
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add(errorNotification)
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}
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}
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