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smalltalk-matrix
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handling the first sync without any local cache as a loading state rather than showing the empty view

This commit is contained in:
Adam Brown 2022-06-11 23:11:48 +01:00
parent b82397d965
commit 83537b1367
2 changed files with 30 additions and 21 deletions
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23
features/directory/src/main/kotlin/app/dapk/st/directory/DirectoryUseCase.kt
View File

@ -8,9 +8,7 @@ import app.dapk.st.matrix.message.MessageService
import app.dapk.st.matrix.room.RoomService
import app.dapk.st.matrix.sync.*
import app.dapk.st.matrix.sync.SyncService.SyncEvent.Typing
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.map
import kotlinx.coroutines.flow.*
@JvmInline
value class UnreadCount(val value: Int)
@ -32,13 +30,13 @@ class DirectoryUseCase(
) {
fun state(): Flow<DirectoryState> {
return combine(
syncService.startSyncing().map { credentialsStore.credentials()!!.userId },
syncService.overview(),
return flow { emit(credentialsStore.credentials()!!.userId) }.flatMapMerge { userId ->
combine(
overviewDatasource(),
messageService.localEchos(),
roomStore.observeUnreadCountById(),
syncService.events()
) { userId, overviewState, localEchos, unread, events ->
) { overviewState, localEchos, unread, events ->
overviewState.mergeWithLocalEchos(localEchos, userId).map { roomOverview ->
RoomFoo(
overview = roomOverview,
@ -48,6 +46,17 @@ class DirectoryUseCase(
}
}
}
}
private fun overviewDatasource() = combine(
syncService.startSyncing().map { false }.onStart { emit(true) },
syncService.overview()
) { isFirstLoad, overview ->
when {
isFirstLoad && overview.isEmpty() -> null
else -> overview
}
}.filterNotNull()
private suspend fun OverviewState.mergeWithLocalEchos(localEchos: Map<RoomId, List<MessageService.LocalEcho>>, userId: UserId): OverviewState {
return when {

10
features/notifications/src/main/kotlin/app/dapk/st/notifications/PushAndroidService.kt
View File

@ -11,9 +11,7 @@ import app.dapk.st.work.WorkScheduler
import com.google.firebase.messaging.FirebaseMessagingService
import com.google.firebase.messaging.RemoteMessage
import kotlinx.coroutines.*
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.firstOrNull
import kotlinx.coroutines.flow.*
private var previousJob: Job? = null
@ -72,7 +70,7 @@ class PushAndroidService : FirebaseMessagingService() {
private suspend fun waitForEvent(timeout: Long, eventId: EventId): EventId? {
return withTimeoutOrNull(timeout) {
combine(module.syncService().startSyncing(), module.syncService().observeEvent(eventId)) { _, event -> event }
combine(module.syncService().startSyncing().startInstantly(), module.syncService().observeEvent(eventId)) { _, event -> event }
.firstOrNull {
it == eventId
}
@ -81,10 +79,12 @@ class PushAndroidService : FirebaseMessagingService() {
private suspend fun waitForUnreadChange(timeout: Long): String? {
return withTimeoutOrNull(timeout) {
combine(module.syncService().startSyncing(), module.roomStore().observeUnread()) { _, unread -> unread }
combine(module.syncService().startSyncing().startInstantly(), module.roomStore().observeUnread()) { _, unread -> unread }
.first()
"ignored"
}
}
}
private fun Flow<Unit>.startInstantly() = this.onStart { emit(Unit) }