BayernMessenger/vector/src/main/java/im/vector/riotredesign/features/home/HomeActivityViewModel.kt

77 lines
2.8 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.riotredesign.features.home
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import com.airbnb.mvrx.MvRxState
import com.airbnb.mvrx.MvRxViewModelFactory
import com.airbnb.mvrx.ViewModelContext
import im.vector.matrix.android.api.Matrix
import im.vector.matrix.android.api.session.Session
import im.vector.matrix.rx.rx
import im.vector.riotredesign.core.platform.RiotViewModel
import im.vector.riotredesign.core.utils.LiveEvent
import im.vector.riotredesign.features.home.room.list.RoomSelectionRepository
import io.reactivex.rxkotlin.subscribeBy
import org.koin.android.ext.android.get
class EmptyState : MvRxState
class HomeActivityViewModel(state: EmptyState,
private val session: Session,
roomSelectionRepository: RoomSelectionRepository
) : RiotViewModel<EmptyState>(state) {
companion object : MvRxViewModelFactory<HomeActivityViewModel, EmptyState> {
@JvmStatic
override fun create(viewModelContext: ViewModelContext, state: EmptyState): HomeActivityViewModel? {
val session = Matrix.getInstance().currentSession!!
val roomSelectionRepository = viewModelContext.activity.get<RoomSelectionRepository>()
return HomeActivityViewModel(state, session, roomSelectionRepository)
}
}
private val _openRoomLiveData = MutableLiveData<LiveEvent<String>>()
val openRoomLiveData: LiveData<LiveEvent<String>>
get() = _openRoomLiveData
init {
val lastSelectedRoomId = roomSelectionRepository.lastSelectedRoom()
if (lastSelectedRoomId == null || session.getRoom(lastSelectedRoomId) == null) {
getTheFirstRoomWhenAvailable()
} else {
_openRoomLiveData.postValue(LiveEvent(lastSelectedRoomId))
}
}
private fun getTheFirstRoomWhenAvailable() {
session.rx().liveRoomSummaries()
.filter { it.isNotEmpty() }
.first(emptyList())
.subscribeBy {
val firstRoom = it.firstOrNull()
if (firstRoom != null) {
_openRoomLiveData.postValue(LiveEvent(firstRoom.roomId))
}
}
.disposeOnClear()
}
}