BayernMessenger/vector/src/main/java/im/vector/riotx/features/home/room/detail/timeline/action/ViewEditHistoryViewModel.kt

123 lines
5.0 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.riotx.features.home.room.detail.timeline.action
import com.airbnb.mvrx.*
import com.squareup.inject.assisted.Assisted
import com.squareup.inject.assisted.AssistedInject
import im.vector.matrix.android.api.MatrixCallback
import im.vector.matrix.android.api.session.Session
import im.vector.matrix.android.api.session.crypto.MXCryptoError
import im.vector.matrix.android.api.session.events.model.Event
import im.vector.matrix.android.api.session.events.model.toModel
import im.vector.matrix.android.api.session.room.model.message.MessageContent
import im.vector.matrix.android.api.session.room.model.message.isReply
import im.vector.matrix.android.internal.crypto.algorithms.olm.OlmDecryptionResult
import im.vector.riotx.core.platform.VectorViewModel
import im.vector.riotx.core.date.VectorDateFormatter
import timber.log.Timber
import java.util.*
data class ViewEditHistoryViewState(
val eventId: String,
val roomId: String,
val isOriginalAReply: Boolean = false,
val editList: Async<List<Event>> = Uninitialized)
: MvRxState {
constructor(args: TimelineEventFragmentArgs) : this(roomId = args.roomId, eventId = args.eventId)
}
class ViewEditHistoryViewModel @AssistedInject constructor(@Assisted
initialState: ViewEditHistoryViewState,
val session: Session,
val dateFormatter: VectorDateFormatter
) : VectorViewModel<ViewEditHistoryViewState>(initialState) {
private val roomId = initialState.roomId
private val eventId = initialState.eventId
private val room = session.getRoom(roomId)
?: throw IllegalStateException("Shouldn't use this ViewModel without a room")
@AssistedInject.Factory
interface Factory {
fun create(initialState: ViewEditHistoryViewState): ViewEditHistoryViewModel
}
companion object : MvRxViewModelFactory<ViewEditHistoryViewModel, ViewEditHistoryViewState> {
override fun create(viewModelContext: ViewModelContext, state: ViewEditHistoryViewState): ViewEditHistoryViewModel? {
val fragment: ViewEditHistoryBottomSheet = (viewModelContext as FragmentViewModelContext).fragment()
return fragment.viewEditHistoryViewModelFactory.create(state)
}
}
init {
loadHistory()
}
private fun loadHistory() {
setState { copy(editList = Loading()) }
room.fetchEditHistory(eventId, object : MatrixCallback<List<Event>> {
override fun onFailure(failure: Throwable) {
setState {
copy(editList = Fail(failure))
}
}
override fun onSuccess(data: List<Event>) {
var originalIsReply = false
val events = data.map { event ->
val timelineID = event.roomId + UUID.randomUUID().toString()
event.also {
//We need to check encryption
if (it.isEncrypted() && it.mxDecryptionResult == null) {
//for now decrypt sync
try {
val result = session.decryptEvent(it, timelineID)
it.mxDecryptionResult = OlmDecryptionResult(
payload = result.clearEvent,
senderKey = result.senderCurve25519Key,
keysClaimed = result.claimedEd25519Key?.let { k -> mapOf("ed25519" to k) },
forwardingCurve25519KeyChain = result.forwardingCurve25519KeyChain
)
} catch (e: MXCryptoError) {
Timber.w("Failed to decrypt event in history")
}
}
if (event.eventId == it.eventId) {
originalIsReply = it.getClearContent().toModel<MessageContent>().isReply()
}
}
}
setState {
copy(
editList = Success(events),
isOriginalAReply = originalIsReply
)
}
}
})
}
}