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Merge pull request #96 from matheus-corregiari/release/1.6.0
[Release] 1.6.0
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toolkit/splinter/src/main/kotlin/br/com/arch/toolkit/splinter/strategy/MirrorFlow.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package br.com.arch.toolkit.splinter.strategy | ||
|
|
||
| import androidx.annotation.WorkerThread | ||
| import br.com.arch.toolkit.result.DataResult | ||
| import br.com.arch.toolkit.result.DataResultStatus | ||
| import br.com.arch.toolkit.splinter.Splinter | ||
| import br.com.arch.toolkit.splinter.extension.emitData | ||
| import br.com.arch.toolkit.splinter.extension.emitError | ||
| import br.com.arch.toolkit.splinter.extension.emitLoading | ||
| import br.com.arch.toolkit.splinter.extension.invokeCatching | ||
| import kotlinx.coroutines.flow.Flow | ||
| import kotlinx.coroutines.flow.FlowCollector | ||
| import kotlinx.coroutines.flow.catch | ||
|
|
||
| /** | ||
| * Strategy to mirror results from another flow using the DataResult | ||
| * | ||
| * @see Strategy | ||
| */ | ||
| class MirrorFlow<RESULT : Any> : Strategy<RESULT>() { | ||
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|
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| /** | ||
| * Block that configure how this Strategy will work ^^ | ||
| * | ||
| * @see MirrorFlow.Config | ||
| */ | ||
| private val config = Config() | ||
| fun config(config: Config.() -> Unit) = apply { this.config.run(config) } | ||
|
|
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| @WorkerThread | ||
| override suspend fun execute( | ||
| collector: FlowCollector<DataResult<RESULT>>, | ||
| executor: Splinter<RESULT> | ||
| ) { | ||
| val onError: suspend (Throwable) -> Unit = { error -> | ||
| if (executor.status != DataResultStatus.SUCCESS) { | ||
| executor.logError("\t[MirrorFlow] Emit - Error! - $error") | ||
| flowError(error, collector, executor) | ||
| } else { | ||
| executor.logWarning("\t[MirrorFlow] Got some error but I did not emit it - $error") | ||
| } | ||
| } | ||
|
|
||
| kotlin.runCatching { | ||
| collector.emitLoading(executor.data) | ||
| requireNotNull(config.flow) { "Flow value mist be set!" }.invoke() | ||
| .catch { error -> onError.invoke(error) } | ||
| .collect { data -> | ||
| executor.logInfo("\t[MirrorFlow] Executed with success, data: $data") | ||
| executor.logInfo("\t[MirrorFlow] Emit - Success Data! - $data") | ||
| collector.emitLoading(data) | ||
| } | ||
| if (executor.error == null) executor.data?.let { collector.emitData(it) } | ||
| }.onFailure { error -> onError.invoke(error) } | ||
| } | ||
|
|
||
| override suspend fun flowError( | ||
| error: Throwable, | ||
| collector: FlowCollector<DataResult<RESULT>>, | ||
| executor: Splinter<RESULT> | ||
| ) = collector.emitError( | ||
| error = config.mapError?.invoke(error) ?: error, | ||
| data = executor.data ?: config.fallback?.invokeCatching(error)?.getOrNull() | ||
| ) | ||
|
|
||
| /** | ||
| * | ||
| */ | ||
| inner class Config internal constructor() { | ||
| internal var mapError: (suspend (Throwable) -> Throwable)? = null | ||
| internal var fallback: (suspend (Throwable) -> RESULT)? = null | ||
| internal var flow: (suspend () -> Flow<RESULT>)? = null | ||
|
|
||
| fun flow(flow: suspend () -> Flow<RESULT>) = apply { this.flow = flow } | ||
| } | ||
| } |
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