forked from GitHub-Mirror/riotX-android
183 lines
7.9 KiB
Kotlin
183 lines
7.9 KiB
Kotlin
/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package im.vector.riotredesign.features.home.room.list
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import androidx.lifecycle.LiveData
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import androidx.lifecycle.MutableLiveData
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import arrow.core.Option
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import com.airbnb.mvrx.MvRxViewModelFactory
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import com.airbnb.mvrx.ViewModelContext
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import com.jakewharton.rxrelay2.BehaviorRelay
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import im.vector.matrix.android.api.session.Session
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import im.vector.matrix.android.api.session.group.model.GroupSummary
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import im.vector.matrix.android.api.session.room.model.RoomSummary
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import im.vector.matrix.android.api.session.room.model.tag.RoomTag
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import im.vector.matrix.rx.rx
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import im.vector.riotredesign.core.platform.RiotViewModel
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import im.vector.riotredesign.core.utils.LiveEvent
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import im.vector.riotredesign.features.home.group.SelectedGroupStore
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import im.vector.riotredesign.features.home.room.VisibleRoomStore
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import io.reactivex.Observable
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import io.reactivex.functions.Function3
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import org.koin.android.ext.android.get
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import java.util.concurrent.TimeUnit
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typealias RoomListFilterName = CharSequence
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class RoomListViewModel(initialState: RoomListViewState,
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private val session: Session,
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private val selectedGroupHolder: SelectedGroupStore,
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private val visibleRoomHolder: VisibleRoomStore,
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private val roomSelectionRepository: RoomSelectionRepository,
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private val roomSummaryComparator: RoomSummaryComparator)
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: RiotViewModel<RoomListViewState>(initialState) {
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companion object : MvRxViewModelFactory<RoomListViewModel, RoomListViewState> {
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@JvmStatic
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override fun create(viewModelContext: ViewModelContext, state: RoomListViewState): RoomListViewModel? {
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val currentSession = viewModelContext.activity.get<Session>()
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val roomSelectionRepository = viewModelContext.activity.get<RoomSelectionRepository>()
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val selectedGroupHolder = viewModelContext.activity.get<SelectedGroupStore>()
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val visibleRoomHolder = viewModelContext.activity.get<VisibleRoomStore>()
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val roomSummaryComparator = viewModelContext.activity.get<RoomSummaryComparator>()
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return RoomListViewModel(state, currentSession, selectedGroupHolder, visibleRoomHolder, roomSelectionRepository, roomSummaryComparator)
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}
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}
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private val roomListFilter = BehaviorRelay.createDefault<Option<RoomListFilterName>>(Option.empty())
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private val _openRoomLiveData = MutableLiveData<LiveEvent<String>>()
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val openRoomLiveData: LiveData<LiveEvent<String>>
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get() = _openRoomLiveData
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init {
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observeRoomSummaries()
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observeVisibleRoom()
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}
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fun accept(action: RoomListActions) {
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when (action) {
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is RoomListActions.SelectRoom -> handleSelectRoom(action)
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is RoomListActions.FilterRooms -> handleFilterRooms(action)
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is RoomListActions.ToggleCategory -> handleToggleCategory(action)
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}
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}
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// PRIVATE METHODS *****************************************************************************
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private fun handleSelectRoom(action: RoomListActions.SelectRoom) = withState { state ->
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if (state.visibleRoomId != action.roomSummary.roomId) {
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roomSelectionRepository.saveLastSelectedRoom(action.roomSummary.roomId)
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_openRoomLiveData.postValue(LiveEvent(action.roomSummary.roomId))
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}
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}
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private fun handleFilterRooms(action: RoomListActions.FilterRooms) {
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val optionalFilter = Option.fromNullable(action.roomName)
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roomListFilter.accept(optionalFilter)
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}
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private fun handleToggleCategory(action: RoomListActions.ToggleCategory) = setState {
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this.toggle(action.category)
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}
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private fun observeVisibleRoom() {
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visibleRoomHolder.observe()
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.doOnNext {
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setState { copy(visibleRoomId = it) }
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}
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.subscribe()
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.disposeOnClear()
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}
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private fun observeRoomSummaries() {
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Observable.combineLatest<List<RoomSummary>, Option<GroupSummary>, Option<RoomListFilterName>, RoomSummaries>(
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session.rx().liveRoomSummaries().throttleLast(300, TimeUnit.MILLISECONDS),
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selectedGroupHolder.observe(),
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roomListFilter.throttleLast(300, TimeUnit.MILLISECONDS),
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Function3 { rooms, selectedGroupOption, filterRoomOption ->
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val filteredRooms = filterRooms(rooms, filterRoomOption)
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val selectedGroup = selectedGroupOption.orNull()
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val filteredDirectRooms = filteredRooms
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.filter { it.isDirect }
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.filter {
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if (selectedGroup == null) {
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true
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} else {
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it.otherMemberIds
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.intersect(selectedGroup.userIds)
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.isNotEmpty()
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}
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}
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val filteredGroupRooms = filteredRooms
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.filter { !it.isDirect }
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.filter {
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selectedGroup?.roomIds?.contains(it.roomId) ?: true
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}
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buildRoomSummaries(filteredDirectRooms + filteredGroupRooms)
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}
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)
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.execute { async ->
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copy(
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asyncRooms = async
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)
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}
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}
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private fun filterRooms(rooms: List<RoomSummary>, filterRoomOption: Option<RoomListFilterName>): List<RoomSummary> {
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val filterRoom = filterRoomOption.orNull()
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return rooms.filter {
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if (filterRoom.isNullOrBlank()) {
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true
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} else {
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it.displayName.contains(other = filterRoom, ignoreCase = true)
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}
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}
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}
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private fun buildRoomSummaries(rooms: List<RoomSummary>): RoomSummaries {
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val favourites = ArrayList<RoomSummary>()
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val directChats = ArrayList<RoomSummary>()
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val groupRooms = ArrayList<RoomSummary>()
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val lowPriorities = ArrayList<RoomSummary>()
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val serverNotices = ArrayList<RoomSummary>()
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for (room in rooms) {
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val tags = room.tags.map { it.name }
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when {
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tags.contains(RoomTag.ROOM_TAG_SERVER_NOTICE) -> serverNotices.add(room)
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tags.contains(RoomTag.ROOM_TAG_FAVOURITE) -> favourites.add(room)
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tags.contains(RoomTag.ROOM_TAG_LOW_PRIORITY) -> lowPriorities.add(room)
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room.isDirect -> directChats.add(room)
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else -> groupRooms.add(room)
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}
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}
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return RoomSummaries().apply {
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put(RoomCategory.FAVOURITE, favourites.sortedWith(roomSummaryComparator))
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put(RoomCategory.DIRECT, directChats.sortedWith(roomSummaryComparator))
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put(RoomCategory.GROUP, groupRooms.sortedWith(roomSummaryComparator))
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put(RoomCategory.LOW_PRIORITY, lowPriorities.sortedWith(roomSummaryComparator))
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put(RoomCategory.SERVER_NOTICE, serverNotices.sortedWith(roomSummaryComparator))
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}
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}
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} |