Use heroes only for DMs. #1538

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/MatrixRoomInfoMapper.kt

@@ -58,7 +58,7 @@ class MatrixRoomInfoMapper {
             userDefinedNotificationMode = it.userDefinedNotificationMode?.map(),
             hasRoomCall = it.hasRoomCall,
             activeRoomCallParticipants = it.activeRoomCallParticipants.toImmutableList(),
-            heroes = it.heroes.map { hero -> hero.map() }.toImmutableList()
+            heroes = it.elementHeroes().toImmutableList()
         )
     }
 }

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/room/RoomInfoExt.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright (c) 2024 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 io.element.android.libraries.matrix.impl.room
+
+import io.element.android.libraries.matrix.api.user.MatrixUser
+import org.matrix.rustcomponents.sdk.RoomInfo
+
+/**
+ * Extract the heroes from the room info.
+ * For now we only use heroes for direct rooms with 2 members.
+ * Also we keep the heroes only if there is one single hero.
+ */
+fun RoomInfo.elementHeroes(): List<MatrixUser> {
+    return heroes
+        .takeIf { isDirect && activeMembersCount.toLong() == 2L }
+        ?.takeIf { it.size == 1 }
+        ?.map { it.map() }
+        .orEmpty()
+}

libraries/matrix/impl/src/main/kotlin/io/element/android/libraries/matrix/impl/roomlist/RoomSummaryDetailsFactory.kt

@@ -20,6 +20,7 @@ import io.element.android.libraries.matrix.api.core.RoomAlias
 import io.element.android.libraries.matrix.api.core.RoomId
 import io.element.android.libraries.matrix.api.roomlist.RoomSummaryDetails
 import io.element.android.libraries.matrix.impl.notificationsettings.RoomNotificationSettingsMapper
+import io.element.android.libraries.matrix.impl.room.elementHeroes
 import io.element.android.libraries.matrix.impl.room.map
 import io.element.android.libraries.matrix.impl.room.member.RoomMemberMapper
 import io.element.android.libraries.matrix.impl.room.message.RoomMessageFactory
@@ -49,7 +50,7 @@ class RoomSummaryDetailsFactory(private val roomMessageFactory: RoomMessageFacto
             isDm = roomInfo.isDirect && roomInfo.activeMembersCount.toLong() == 2L,
             isFavorite = roomInfo.isFavourite,
             currentUserMembership = roomInfo.membership.map(),
-            heroes = roomInfo.heroes.map { it.map() },
+            heroes = roomInfo.elementHeroes(),
         )
     }
 }