Updated on 2026-08-14
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Tangem
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4 changed files with 257 additions and 0 deletions
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package com.tangem.data.networks.single
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import com.tangem.domain.networks.multi.MultiNetworkStatusProducer
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import com.tangem.domain.networks.multi.MultiNetworkStatusSupplier
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import com.tangem.domain.networks.single.SingleNetworkStatusProducer
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import com.tangem.domain.tokens.model.NetworkStatus
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import dagger.assisted.Assisted
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import dagger.assisted.AssistedFactory
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import dagger.assisted.AssistedInject
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.distinctUntilChanged
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import kotlinx.coroutines.flow.mapNotNull
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/**
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* Default implementation of [SingleNetworkStatusProducer]
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*
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* @property params params
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* @property multiNetworkStatusSupplier multi network status supplier
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*
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[REDACTED_AUTHOR]
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*/
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internal class DefaultSingleNetworkStatusProducer @AssistedInject constructor(
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@Assisted val params: SingleNetworkStatusProducer.Params,
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private val multiNetworkStatusSupplier: MultiNetworkStatusSupplier,
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) : SingleNetworkStatusProducer {
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override val fallback: NetworkStatus
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get() = NetworkStatus(network = params.network, value = NetworkStatus.Unreachable(address = null))
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override fun produce(): Flow<NetworkStatus> {
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return multiNetworkStatusSupplier(
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params = MultiNetworkStatusProducer.Params(params.userWalletId),
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)
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.mapNotNull { statuses ->
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statuses.firstOrNull { it.network == params.network }
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}
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.distinctUntilChanged()
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}
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@AssistedFactory
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interface Factory : SingleNetworkStatusProducer.Factory {
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override fun create(params: SingleNetworkStatusProducer.Params): DefaultSingleNetworkStatusProducer
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}
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}
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package com.tangem.data.networks.single
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import com.google.common.truth.Truth
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import com.tangem.common.test.domain.network.MockNetworkStatusFactory
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import com.tangem.common.test.domain.token.MockCryptoCurrencyFactory
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import com.tangem.common.test.utils.getEmittedValues
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import com.tangem.domain.networks.multi.MultiNetworkStatusProducer
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import com.tangem.domain.networks.multi.MultiNetworkStatusSupplier
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import com.tangem.domain.networks.single.SingleNetworkStatusProducer
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import com.tangem.domain.tokens.model.NetworkStatus
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import com.tangem.domain.wallets.models.UserWalletId
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import io.mockk.every
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import io.mockk.mockk
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import io.mockk.verify
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import kotlinx.coroutines.flow.*
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import kotlinx.coroutines.test.runTest
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import org.junit.Test
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/**
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[REDACTED_AUTHOR]
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*/
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internal class DefaultSingleNetworkStatusProducerTest {
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private val params = SingleNetworkStatusProducer.Params(
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userWalletId = UserWalletId(stringValue = "011"),
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network = ethereum,
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)
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private val multiNetworkStatusSupplier = mockk<MultiNetworkStatusSupplier>()
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private val producer = DefaultSingleNetworkStatusProducer(
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params = params,
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multiNetworkStatusSupplier = multiNetworkStatusSupplier,
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)
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@Test
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fun `test that flow is mapped for network from params`() = runTest {
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val status = MockNetworkStatusFactory.createMissedDerivation(params.network)
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val expected = flowOf(
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setOf(
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status,
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MockNetworkStatusFactory.createMissedDerivation(cardano),
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),
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)
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val multiParams = MultiNetworkStatusProducer.Params(userWalletId = params.userWalletId)
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every { multiNetworkStatusSupplier(multiParams) } returns expected
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val actual = producer.produce()
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verify { multiNetworkStatusSupplier(multiParams) }
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val values = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values.size).isEqualTo(1)
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Truth.assertThat(values).isEqualTo(listOf(status))
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}
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@Test
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fun `test that flow is updated if network status is updated`() = runTest {
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val expected = MutableSharedFlow<Set<NetworkStatus>>(replay = 2, extraBufferCapacity = 1)
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val multiParams = MultiNetworkStatusProducer.Params(userWalletId = params.userWalletId)
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every { multiNetworkStatusSupplier(multiParams) } returns expected
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val actual = producer.produceWithFallback()
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verify { multiNetworkStatusSupplier(multiParams) }
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// first emit
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val status = MockNetworkStatusFactory.createMissedDerivation(params.network)
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expected.emit(value = setOf(status))
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val values1 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values1.size).isEqualTo(1)
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Truth.assertThat(values1).isEqualTo(listOf(status))
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// second emit
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val updatedStatus = status.copy(value = NetworkStatus.Unreachable(null))
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expected.emit(value = setOf(updatedStatus))
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val values2 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values2.size).isEqualTo(2)
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Truth.assertThat(values2).isEqualTo(listOf(status, updatedStatus))
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}
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@Test
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fun `test that flow is filtered the same status`() = runTest {
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val expected = MutableSharedFlow<Set<NetworkStatus>>(replay = 2, extraBufferCapacity = 1)
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val multiParams = MultiNetworkStatusProducer.Params(userWalletId = params.userWalletId)
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every { multiNetworkStatusSupplier(multiParams) } returns expected
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val actual = producer.produceWithFallback()
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verify { multiNetworkStatusSupplier(multiParams) }
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// first emit
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val status = MockNetworkStatusFactory.createMissedDerivation(params.network)
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expected.emit(value = setOf(status))
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val values1 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values1.size).isEqualTo(1)
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Truth.assertThat(values1).isEqualTo(listOf(status))
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// second emit
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expected.emit(value = setOf(status))
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val values2 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values2.size).isEqualTo(1)
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Truth.assertThat(values2).isEqualTo(listOf(status))
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}
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@Test
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fun `test if flow throws exception`() = runTest {
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val exception = IllegalStateException()
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val status = MockNetworkStatusFactory.createMissedDerivation(params.network)
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val innerFlow = MutableStateFlow(value = false)
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val expected = flow {
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if (innerFlow.value) {
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emit(setOf(status))
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} else {
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throw exception
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}
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}
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.buffer(capacity = 5)
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val multiParams = MultiNetworkStatusProducer.Params(userWalletId = params.userWalletId)
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every { multiNetworkStatusSupplier(multiParams) } returns expected
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val actual = producer.produceWithFallback()
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verify { multiNetworkStatusSupplier(multiParams) }
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val values1 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values1.size).isEqualTo(1)
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val fallbackStatus = MockNetworkStatusFactory.createUnreachable(params.network)
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Truth.assertThat(values1).isEqualTo(listOf(fallbackStatus))
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innerFlow.emit(value = true)
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val values2 = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values2.size).isEqualTo(1)
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Truth.assertThat(values2).isEqualTo(listOf(status))
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}
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@Test
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fun `test if flow doesn't contain network from params`() = runTest {
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val expected = flowOf(
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setOf(MockNetworkStatusFactory.createMissedDerivation(cardano)),
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)
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val multiParams = MultiNetworkStatusProducer.Params(userWalletId = params.userWalletId)
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every { multiNetworkStatusSupplier(multiParams) } returns expected
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val actual = producer.produce()
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verify { multiNetworkStatusSupplier(multiParams) }
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val values = backgroundScope.getEmittedValues(testScheduler = testScheduler, actual = actual)
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Truth.assertThat(values.size).isEqualTo(0)
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}
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private companion object {
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val mocks = MockCryptoCurrencyFactory()
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val ethereum = mocks.ethereum.network
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val cardano = mocks.cardano.network
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}
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}
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@ -0,0 +1,18 @@
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package com.tangem.domain.networks.single
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import com.tangem.domain.core.flow.FlowProducer
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import com.tangem.domain.tokens.model.Network
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import com.tangem.domain.tokens.model.NetworkStatus
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import com.tangem.domain.wallets.models.UserWalletId
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/**
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* Producer of network status [Network] for wallet with [UserWalletId]
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*
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[REDACTED_AUTHOR]
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*/
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interface SingleNetworkStatusProducer : FlowProducer<NetworkStatus> {
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data class Params(val userWalletId: UserWalletId, val network: Network)
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interface Factory : FlowProducer.Factory<Params, SingleNetworkStatusProducer>
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}
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@ -0,0 +1,17 @@
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package com.tangem.domain.networks.single
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import com.tangem.domain.core.flow.FlowCachingSupplier
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import com.tangem.domain.tokens.model.NetworkStatus
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/**
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* Supplier of network status for selected wallet [SingleNetworkStatusProducer.Params]
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*
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* @property factory factory for creating [SingleNetworkStatusProducer]
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* @property keyCreator key creator
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*
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[REDACTED_AUTHOR]
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*/
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abstract class SingleNetworkStatusSupplier(
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override val factory: SingleNetworkStatusProducer.Factory,
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override val keyCreator: (SingleNetworkStatusProducer.Params) -> String,
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) : FlowCachingSupplier<SingleNetworkStatusProducer, SingleNetworkStatusProducer.Params, NetworkStatus>()
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