BayernMessenger/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/tombstone/RoomTombstoneEventLiveObser...

76 lines
3.3 KiB
Kotlin

/*
* Copyright 2019 New Vector Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package im.vector.matrix.android.internal.session.room.tombstone
import com.zhuinden.monarchy.Monarchy
import im.vector.matrix.android.api.session.events.model.Event
import im.vector.matrix.android.api.session.events.model.EventType
import im.vector.matrix.android.api.session.events.model.toModel
import im.vector.matrix.android.api.session.room.model.VersioningState
import im.vector.matrix.android.api.session.room.model.tombstone.RoomTombstoneContent
import im.vector.matrix.android.internal.database.RealmLiveEntityObserver
import im.vector.matrix.android.internal.database.mapper.asDomain
import im.vector.matrix.android.internal.database.model.EventEntity
import im.vector.matrix.android.internal.database.model.RoomSummaryEntity
import im.vector.matrix.android.internal.database.query.types
import im.vector.matrix.android.internal.database.query.where
import im.vector.matrix.android.internal.di.SessionDatabase
import io.realm.OrderedCollectionChangeSet
import io.realm.Realm
import io.realm.RealmConfiguration
import io.realm.RealmResults
import javax.inject.Inject
internal class RoomTombstoneEventLiveObserver @Inject constructor(@SessionDatabase
realmConfiguration: RealmConfiguration)
: RealmLiveEntityObserver<EventEntity>(realmConfiguration) {
override val query = Monarchy.Query<EventEntity> {
EventEntity.types(it, listOf(EventType.STATE_ROOM_TOMBSTONE))
}
override fun onChange(results: RealmResults<EventEntity>, changeSet: OrderedCollectionChangeSet) {
changeSet.insertions
.asSequence()
.mapNotNull {
results[it]?.asDomain()
}
.toList()
.also {
handleRoomTombstoneEvents(it)
}
}
private fun handleRoomTombstoneEvents(tombstoneEvents: List<Event>) = Realm.getInstance(realmConfiguration).use {
it.executeTransactionAsync { realm ->
for (event in tombstoneEvents) {
if (event.roomId == null) continue
val createRoomContent = event.getClearContent().toModel<RoomTombstoneContent>()
if (createRoomContent?.replacementRoom == null) continue
val predecessorRoomSummary = RoomSummaryEntity.where(realm, event.roomId).findFirst()
?: RoomSummaryEntity(event.roomId)
if (predecessorRoomSummary.versioningState == VersioningState.NONE) {
predecessorRoomSummary.versioningState = VersioningState.UPGRADED_ROOM_NOT_JOINED
}
realm.insertOrUpdate(predecessorRoomSummary)
}
}
}
}