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replacing boolean constants with an improved function name + doc around why the events can be missing

This commit is contained in:
Adam Brown 2021-10-01 16:20:42 +01:00
parent f9d2f236a4
commit c72f66871f
1 changed files with 8 additions and 12 deletions
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20
matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/query/ReadQueries.kt
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@ -23,9 +23,6 @@ import org.matrix.android.sdk.internal.database.model.ReadMarkerEntity
import org.matrix.android.sdk.internal.database.model.ReadReceiptEntity
import org.matrix.android.sdk.internal.database.model.TimelineEventEntity
private const val MARK_OLD_EVENT_AS_READ = true
private const val MARK_UNREAD_DUE_TO_FASTLANE = false
internal fun isEventRead(realmConfiguration: RealmConfiguration,
userId: String?,
roomId: String?,
@ -42,7 +39,7 @@ internal fun isEventRead(realmConfiguration: RealmConfiguration,
val liveChunk = ChunkEntity.findLastForwardChunkOfRoom(realm, roomId) ?: return@use
val eventToCheck = liveChunk.timelineEvents.find(eventId)
isEventRead = when {
eventToCheck == null -> handleMissingEvent(
eventToCheck == null -> hasReadMissingEvent(
realm = realm,
latestChunkEntity = liveChunk,
roomId = roomId,
@ -50,7 +47,7 @@ internal fun isEventRead(realmConfiguration: RealmConfiguration,
eventId = eventId
)
eventToCheck.root?.sender == userId -> true
else -> {
else -> {
val readReceipt = ReadReceiptEntity.where(realm, roomId, userId).findFirst() ?: return@use
val readReceiptIndex = liveChunk.timelineEvents.find(readReceipt.eventId)?.displayIndex ?: Int.MIN_VALUE
eventToCheck.displayIndex <= readReceiptIndex
@ -61,13 +58,12 @@ internal fun isEventRead(realmConfiguration: RealmConfiguration,
return isEventRead
}
private fun handleMissingEvent(realm: Realm, latestChunkEntity: ChunkEntity, roomId: String, userId: String, eventId: String): Boolean {
return if (realm.doesEventExistInChunkHistory(eventId) && realm.hasReadReceiptInLatestChunk(latestChunkEntity, roomId, userId)) {
MARK_OLD_EVENT_AS_READ
} else {
// This can happen when fast lane events are displayed before the database finishes updating
MARK_UNREAD_DUE_TO_FASTLANE
}
/**
* Missing events can be caused by the latest timeline chunk no longer contain an older event or
* by fast lane eagerly displaying events before the database has finished updating
*/
private fun hasReadMissingEvent(realm: Realm, latestChunkEntity: ChunkEntity, roomId: String, userId: String, eventId: String): Boolean {
return realm.doesEventExistInChunkHistory(eventId) && realm.hasReadReceiptInLatestChunk(latestChunkEntity, roomId, userId)
}
private fun Realm.doesEventExistInChunkHistory(eventId: String): Boolean {