Updated on 2026-08-14

domain/qr-scanning/.gitignore

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+/build

domain/qr-scanning/build.gradle.kts

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+plugins {
+    alias(deps.plugins.kotlin.jvm)
+    id("configuration")
+}
+
+dependencies {
+
+    /** Domain */
+    implementation(projects.domain.qrScanning.models)
+
+    implementation(deps.kotlin.coroutines)
+    implementation(deps.arrow.core)
+}

domain/qr-scanning/models/.gitignore

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+/build

domain/qr-scanning/models/build.gradle.kts

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+plugins {
+    alias(deps.plugins.kotlin.jvm)
+    id("configuration")
+}

domain/qr-scanning/models/src/main/java/com/tangem/domain/qrscanning/models/SourceType.kt

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+package com.tangem.domain.qrscanning.models
+
+enum class SourceType {
+    WALLET_CONNECT,
+    SEND,
+}

domain/qr-scanning/src/main/java/com/tangem/domain/qrscanning/repository/QrScanningEventsRepository.kt

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+package com.tangem.domain.qrscanning.repository
+
+import com.tangem.domain.qrscanning.models.SourceType
+import kotlinx.coroutines.flow.Flow
+
+interface QrScanningEventsRepository {
+
+    suspend fun emitResult(type: SourceType, qrCode: String)
+
+    fun subscribeToScanningResults(type: SourceType): Flow<String>
+}

domain/qr-scanning/src/main/java/com/tangem/domain/qrscanning/usecases/EmitQrScannedEventUseCase.kt

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+package com.tangem.domain.qrscanning.usecases
+
+import arrow.core.Either
+import arrow.core.left
+import arrow.core.right
+import com.tangem.domain.qrscanning.models.SourceType
+import com.tangem.domain.qrscanning.repository.QrScanningEventsRepository
+
+class EmitQrScannedEventUseCase(
+    private val repository: QrScanningEventsRepository,
+) {
+    suspend operator fun invoke(type: SourceType, qrCode: String): Either<Exception, Unit> {
+        return try {
+            repository.emitResult(type, qrCode)
+            Unit.right()
+        } catch (e: Exception) {
+            e.left()
+        }
+    }
+}

domain/qr-scanning/src/main/java/com/tangem/domain/qrscanning/usecases/ListenToQrScanningUseCase.kt

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+package com.tangem.domain.qrscanning.usecases
+
+import arrow.core.Either
+import arrow.core.left
+import arrow.core.right
+import com.tangem.domain.qrscanning.models.SourceType
+import com.tangem.domain.qrscanning.repository.QrScanningEventsRepository
+import kotlinx.coroutines.flow.Flow
+
+class ListenToQrScanningUseCase(
+    val repository: QrScanningEventsRepository,
+) {
+
+    operator fun invoke(type: SourceType): Either<Exception, Flow<String>> {
+        return try {
+            repository.subscribeToScanningResults(type).right()
+        } catch (e: Exception) {
+            e.left()
+        }
+    }
+}