BayernMessenger/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/RoomAvatarResolver.kt

66 lines
2.9 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
import com.zhuinden.monarchy.Monarchy
import im.vector.matrix.android.api.auth.data.Credentials
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.RoomAvatarContent
import im.vector.matrix.android.api.session.room.model.RoomMember
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.EventEntityFields
import im.vector.matrix.android.internal.database.query.prev
import im.vector.matrix.android.internal.database.query.where
import im.vector.matrix.android.internal.session.room.membership.RoomMembers
import javax.inject.Inject
internal class RoomAvatarResolver @Inject constructor(private val monarchy: Monarchy,
private val credentials: Credentials) {
/**
* Compute the room avatar url
* @param roomId the roomId of the room to resolve avatar
* @return the room avatar url, can be a fallback to a room member avatar or null
*/
fun resolve(roomId: String): String? {
var res: String? = null
monarchy.doWithRealm { realm ->
val roomName = EventEntity.where(realm, roomId, EventType.STATE_ROOM_AVATAR).prev()?.asDomain()
res = roomName?.content.toModel<RoomAvatarContent>()?.avatarUrl
if (!res.isNullOrEmpty()) {
return@doWithRealm
}
val roomMembers = RoomMembers(realm, roomId)
val members = roomMembers.queryRoomMembersEvent().findAll()
// detect if it is a room with no more than 2 members (i.e. an alone or a 1:1 chat)
if (members.size == 1) {
res = members.firstOrNull()?.toRoomMember()?.avatarUrl
} else if (members.size == 2) {
val firstOtherMember = members.where().notEqualTo(EventEntityFields.STATE_KEY, credentials.userId).findFirst()
res = firstOtherMember?.toRoomMember()?.avatarUrl
}
}
return res
}
private fun EventEntity?.toRoomMember(): RoomMember? {
return this?.asDomain()?.content?.toModel<RoomMember>()
}
}