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https://github.com/vitorpamplona/amethyst.git
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Continues the migration from LiveData to Flow
This commit is contained in:
Vitor Pamplona
parent
2509d639bd
commit
7475143506
@ -108,11 +108,15 @@ import kotlinx.coroutines.DelicateCoroutinesApi
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.ExperimentalCoroutinesApi
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import kotlinx.coroutines.GlobalScope
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import kotlinx.coroutines.flow.Flow
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.SharingStarted
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import kotlinx.coroutines.flow.StateFlow
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import kotlinx.coroutines.flow.combineTransform
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import kotlinx.coroutines.flow.flatMapLatest
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import kotlinx.coroutines.flow.flattenMerge
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import kotlinx.coroutines.flow.map
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import kotlinx.coroutines.flow.mapLatest
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import kotlinx.coroutines.flow.stateIn
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import kotlinx.coroutines.flow.transformLatest
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import kotlinx.coroutines.launch
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@ -216,179 +220,127 @@ class Account(
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val communities: ImmutableSet<String> = persistentSetOf(),
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)
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class ListNameNotePair(val listName: String, val event: GeneralListEvent?)
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@OptIn(ExperimentalCoroutinesApi::class)
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val liveKind3Follows: StateFlow<LiveFollowLists> by lazy {
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userProfile()
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.live()
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.follows
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.asFlow()
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.transformLatest {
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emit(
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LiveFollowLists(
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userProfile().cachedFollowingKeySet().toImmutableSet(),
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userProfile().cachedFollowingTagSet().toImmutableSet(),
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userProfile().cachedFollowingGeohashSet().toImmutableSet(),
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userProfile().cachedFollowingCommunitiesSet().toImmutableSet(),
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),
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)
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}
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.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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val liveKind3FollowsFlow: Flow<LiveFollowLists> =
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userProfile().flow().follows.stateFlow.transformLatest {
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emit(
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LiveFollowLists(
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it.user.cachedFollowingKeySet().toImmutableSet(),
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it.user.cachedFollowingTagSet().toImmutableSet(),
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it.user.cachedFollowingGeohashSet().toImmutableSet(),
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it.user.cachedFollowingCommunitiesSet().toImmutableSet(),
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),
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)
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}
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val liveKind3Follows = liveKind3FollowsFlow.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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@OptIn(ExperimentalCoroutinesApi::class)
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private val liveHomeList: Flow<ListNameNotePair> by lazy {
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defaultHomeFollowList.flatMapLatest { listName ->
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println("AABBCC liveHomeList $listName changed")
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loadPeopleListFlowFromListName(listName)
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}.transformLatest {
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println("AABBCC liveHomeList after FlattenMerge")
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emit(it)
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}
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}
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@OptIn(ExperimentalCoroutinesApi::class)
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private val liveHomeList: StateFlow<NoteState?> by lazy {
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defaultHomeFollowList
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.transformLatest {
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if (it != GLOBAL_FOLLOWS && it != KIND3_FOLLOWS) {
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LocalCache.checkGetOrCreateAddressableNote(it)?.flow()?.metadata?.stateFlow?.let {
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emit(it)
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}
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fun loadPeopleListFlowFromListName(listName: String): Flow<ListNameNotePair> {
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return if (listName != GLOBAL_FOLLOWS && listName != KIND3_FOLLOWS) {
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val note = LocalCache.checkGetOrCreateAddressableNote(listName)
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println("AABBCC loadPeopleListFlowFromListName $listName ${note?.idHex} ${note?.flow()?.metadata?.stateFlow?.subscriptionCount?.value}")
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note?.flow()?.metadata?.stateFlow?.mapLatest {
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println("AABBCC loadPeopleListFlowFromListName running")
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val noteEvent = it.note.event as? GeneralListEvent
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println("AABBCC loadPeopleListFlowFromListName emitting ${noteEvent?.id}")
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ListNameNotePair(listName, noteEvent)
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} ?: MutableStateFlow(ListNameNotePair(listName, null))
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} else {
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MutableStateFlow(ListNameNotePair(listName, null))
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}
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}
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fun combinePeopleListFlows(
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kind3FollowsSource: Flow<LiveFollowLists>,
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peopleListFollowsSource: Flow<ListNameNotePair>,
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): Flow<LiveFollowLists?> {
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return combineTransform(kind3FollowsSource, peopleListFollowsSource) { kind3Follows, peopleListFollows ->
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if (peopleListFollows.listName == GLOBAL_FOLLOWS) {
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println("AABBCC combinePeopleListFlows ${peopleListFollows.listName} Global")
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emit(null)
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} else if (peopleListFollows.listName == KIND3_FOLLOWS) {
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println("AABBCC combinePeopleListFlows ${peopleListFollows.listName} Kind 3")
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emit(kind3Follows)
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} else if (peopleListFollows.event == null) {
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println("AABBCC combinePeopleListFlows ${peopleListFollows.listName} Note is null")
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emit(LiveFollowLists())
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} else {
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println("AABBCC combinePeopleListFlows ${peopleListFollows.listName} ${peopleListFollows.event.id}")
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val result = waitToDecrypt(peopleListFollows.event)
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if (result == null) {
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println("AABBCC combinePeopleListFlows ${peopleListFollows.listName} returning null")
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emit(LiveFollowLists())
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} else {
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emit(result)
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}
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}
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.flattenMerge()
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.stateIn(scope, SharingStarted.Eagerly, null)
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}
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}
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val liveHomeFollowLists: StateFlow<LiveFollowLists?> by lazy {
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combineTransform(defaultHomeFollowList, liveKind3Follows, liveHomeList) {
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listName,
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kind3Follows,
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peopleListFollows,
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->
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if (listName == GLOBAL_FOLLOWS) {
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emit(null)
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} else if (listName == KIND3_FOLLOWS) {
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emit(kind3Follows)
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} else {
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val result =
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withTimeoutOrNull(1000) {
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suspendCancellableCoroutine { continuation ->
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decryptLiveFollows(peopleListFollows) { continuation.resume(it) }
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}
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}
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result?.let { emit(it) } ?: run { emit(LiveFollowLists()) }
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}
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}
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combinePeopleListFlows(liveKind3FollowsFlow, liveHomeList)
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.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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}
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@OptIn(ExperimentalCoroutinesApi::class)
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private val liveNotificationList: StateFlow<NoteState?> by lazy {
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private val liveNotificationList: Flow<ListNameNotePair> by lazy {
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defaultNotificationFollowList
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.transformLatest {
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if (it != GLOBAL_FOLLOWS && it != KIND3_FOLLOWS) {
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LocalCache.checkGetOrCreateAddressableNote(it)?.flow()?.metadata?.stateFlow?.let {
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emit(it)
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}
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}
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}
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.flattenMerge()
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.stateIn(scope, SharingStarted.Eagerly, null)
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.transformLatest { listName ->
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emit(loadPeopleListFlowFromListName(listName))
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}.flattenMerge()
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}
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val liveNotificationFollowLists: StateFlow<LiveFollowLists?> by lazy {
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combineTransform(defaultNotificationFollowList, liveKind3Follows, liveNotificationList) {
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listName,
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kind3Follows,
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peopleListFollows,
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->
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if (listName == GLOBAL_FOLLOWS) {
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emit(null)
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} else if (listName == KIND3_FOLLOWS) {
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emit(kind3Follows)
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} else {
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val result =
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withTimeoutOrNull(1000) {
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suspendCancellableCoroutine { continuation ->
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decryptLiveFollows(peopleListFollows) { continuation.resume(it) }
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}
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}
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result?.let { emit(it) } ?: run { emit(LiveFollowLists()) }
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}
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}
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combinePeopleListFlows(liveKind3FollowsFlow, liveNotificationList)
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.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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}
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@OptIn(ExperimentalCoroutinesApi::class)
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private val liveStoriesList: StateFlow<NoteState?> by lazy {
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private val liveStoriesList: Flow<ListNameNotePair> by lazy {
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defaultStoriesFollowList
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.transformLatest {
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if (it != GLOBAL_FOLLOWS && it != KIND3_FOLLOWS) {
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LocalCache.checkGetOrCreateAddressableNote(it)?.flow()?.metadata?.stateFlow?.let {
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emit(it)
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}
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}
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}
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.flattenMerge()
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.stateIn(scope, SharingStarted.Eagerly, null)
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.transformLatest { listName ->
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emit(loadPeopleListFlowFromListName(listName))
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}.flattenMerge()
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}
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val liveStoriesFollowLists: StateFlow<LiveFollowLists?> by lazy {
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combineTransform(defaultStoriesFollowList, liveKind3Follows, liveStoriesList) {
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listName,
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kind3Follows,
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peopleListFollows,
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->
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if (listName == GLOBAL_FOLLOWS) {
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emit(null)
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} else if (listName == KIND3_FOLLOWS) {
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emit(kind3Follows)
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} else {
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val result =
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withTimeoutOrNull(1000) {
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suspendCancellableCoroutine { continuation ->
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decryptLiveFollows(peopleListFollows) { continuation.resume(it) }
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}
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}
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result?.let { emit(it) } ?: run { emit(LiveFollowLists()) }
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}
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}
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combinePeopleListFlows(liveKind3FollowsFlow, liveStoriesList)
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.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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}
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@OptIn(ExperimentalCoroutinesApi::class)
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private val liveDiscoveryList: StateFlow<NoteState?> by lazy {
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private val liveDiscoveryList: Flow<ListNameNotePair> by lazy {
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defaultDiscoveryFollowList
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.transformLatest {
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if (it != GLOBAL_FOLLOWS && it != KIND3_FOLLOWS) {
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LocalCache.checkGetOrCreateAddressableNote(it)?.flow()?.metadata?.stateFlow?.let {
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emit(it)
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}
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}
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}
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.flattenMerge()
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.stateIn(scope, SharingStarted.Eagerly, null)
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.transformLatest { listName ->
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emit(loadPeopleListFlowFromListName(listName))
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}.flattenMerge()
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}
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val liveDiscoveryFollowLists: StateFlow<LiveFollowLists?> by lazy {
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combineTransform(defaultDiscoveryFollowList, liveKind3Follows, liveDiscoveryList) {
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listName,
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kind3Follows,
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peopleListFollows,
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->
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if (listName == GLOBAL_FOLLOWS) {
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emit(null)
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} else if (listName == KIND3_FOLLOWS) {
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emit(kind3Follows)
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} else {
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val result =
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withTimeoutOrNull(1000) {
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suspendCancellableCoroutine { continuation ->
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decryptLiveFollows(peopleListFollows) { continuation.resume(it) }
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}
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}
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result?.let { emit(it) } ?: run { emit(LiveFollowLists()) }
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}
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}
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combinePeopleListFlows(liveKind3FollowsFlow, liveDiscoveryList)
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.stateIn(scope, SharingStarted.Eagerly, LiveFollowLists())
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}
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private fun decryptLiveFollows(
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peopleListFollows: NoteState?,
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listEvent: GeneralListEvent,
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onReady: (LiveFollowLists) -> Unit,
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) {
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val listEvent = (peopleListFollows?.note?.event as? GeneralListEvent)
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listEvent?.privateTags(signer) { privateTagList ->
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listEvent.privateTags(signer) { privateTagList ->
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onReady(
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LiveFollowLists(
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users =
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@ -406,6 +358,16 @@ class Account(
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}
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}
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suspend fun waitToDecrypt(peopleListFollows: GeneralListEvent): LiveFollowLists? {
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return withTimeoutOrNull(1000) {
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suspendCancellableCoroutine { continuation ->
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decryptLiveFollows(peopleListFollows) {
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continuation.resume(it)
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}
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}
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}
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}
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@Immutable
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data class LiveHiddenUsers(
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val hiddenUsers: ImmutableSet<String>,
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@ -127,6 +127,7 @@ class User(val pubkeyHex: String) {
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// Update following of the current user
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liveSet?.innerFollows?.invalidateData()
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flowSet?.follows?.invalidateData()
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// Update Followers of the past user list
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// Update Followers of the new contact list
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@ -474,14 +475,16 @@ class User(val pubkeyHex: String) {
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@Stable
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class UserFlowSet(u: User) {
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// Observers line up here.
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val follows = UserBundledRefresherFlow(u)
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val relays = UserBundledRefresherFlow(u)
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fun isInUse(): Boolean {
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return relays.stateFlow.subscriptionCount.value > 0
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return relays.stateFlow.subscriptionCount.value > 0 || follows.stateFlow.subscriptionCount.value > 0
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}
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fun destroy() {
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relays.destroy()
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follows.destroy()
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}
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}
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