flow for aggregated result

Corona-Warn-App/src/main/java/de/rki/coronawarnapp/risk/ExposureResultStore.kt

@@ -2,15 +2,21 @@ package de.rki.coronawarnapp.risk
 
 import com.google.android.gms.nearby.exposurenotification.ExposureWindow
 import de.rki.coronawarnapp.risk.result.AggregatedRiskResult
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.MutableStateFlow
 import javax.inject.Inject
 
 class ExposureResultStore @Inject constructor() {
 
+    private val internalResult = MutableStateFlow<AggregatedRiskResult?>(null)
+    val result: Flow<AggregatedRiskResult?> = internalResult
+
     private var entities: Pair<List<ExposureWindow>, AggregatedRiskResult?> = Pair(emptyList(), null)
 
     var exposureWindowEntities: Pair<List<ExposureWindow>, AggregatedRiskResult?>
         get() = entities
         set(value) {
             entities = value
+            internalResult.value = value.second
         }
 }