extending the room name resolved to create a dedicated room name data class which contains a normalized version of the room name

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/mapper/RoomSummaryMapper.kt

@@ -42,7 +42,7 @@ internal class RoomSummaryMapper @Inject constructor(private val timelineEventMa
 
         return RoomSummary(
                 roomId = roomSummaryEntity.roomId,
-                displayName = roomSummaryEntity.displayName ?: "",
+                displayName = roomSummaryEntity.displayName() ?: "",
                 name = roomSummaryEntity.name ?: "",
                 topic = roomSummaryEntity.topic ?: "",
                 avatarUrl = roomSummaryEntity.avatarUrl ?: "",

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/database/model/RoomSummaryEntity.kt

@@ -28,6 +28,7 @@ import org.matrix.android.sdk.api.session.room.model.RoomSummary
 import org.matrix.android.sdk.api.session.room.model.VersioningState
 import org.matrix.android.sdk.api.session.room.model.tag.RoomTag
 import org.matrix.android.sdk.internal.database.model.presence.UserPresenceEntity
+import org.matrix.android.sdk.internal.session.room.membership.RoomName
 
 internal open class RoomSummaryEntity(
         @PrimaryKey var roomId: String = "",
@@ -36,20 +37,23 @@ internal open class RoomSummaryEntity(
         var children: RealmList<SpaceChildSummaryEntity> = RealmList()
 ) : RealmObject() {
 
-    var displayName: String? = ""
-        set(value) {
-            if (value != field) field = value
+    private var displayName: String? = ""
+
+    fun displayName() = displayName
+
+    fun setDisplayName(roomName: RoomName) {
+        if (roomName.name != displayName) {
+            displayName = roomName.name
+            normalizedDisplayName = roomName.normalizedName
         }
+    }
 
     /**
      * Workaround for Realm only supporting Latin-1 character sets when sorting
      * or filtering by case
      * See https://github.com/realm/realm-core/issues/777
      */
-    var normalizedDisplayName: String? = ""
-        set(value) {
-            if (value != field) field = value
-        }
+    private var normalizedDisplayName: String? = ""
 
     var avatarUrl: String? = ""
         set(value) {

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/membership/RoomDisplayNameResolver.kt

@@ -34,6 +34,7 @@ import org.matrix.android.sdk.internal.database.query.getOrNull
 import org.matrix.android.sdk.internal.database.query.where
 import org.matrix.android.sdk.internal.di.UserId
 import org.matrix.android.sdk.internal.session.displayname.DisplayNameResolver
+import org.matrix.android.sdk.internal.util.Normalizer
 import javax.inject.Inject
 
 /**
@@ -42,6 +43,7 @@ import javax.inject.Inject
 internal class RoomDisplayNameResolver @Inject constructor(
         matrixConfiguration: MatrixConfiguration,
         private val displayNameResolver: DisplayNameResolver,
+        private val normalizer: Normalizer,
         @UserId private val userId: String
 ) {
 
@@ -54,7 +56,7 @@ internal class RoomDisplayNameResolver @Inject constructor(
      * @param roomId: the roomId to resolve the name of.
      * @return the room display name
      */
-    fun resolve(realm: Realm, roomId: String): String {
+    fun resolve(realm: Realm, roomId: String): RoomName {
         // this algorithm is the one defined in
         // https://github.com/matrix-org/matrix-js-sdk/blob/develop/lib/models/room.js#L617
         // calculateRoomName(room, userId)
@@ -66,12 +68,12 @@ internal class RoomDisplayNameResolver @Inject constructor(
         val roomName = CurrentStateEventEntity.getOrNull(realm, roomId, type = EventType.STATE_ROOM_NAME, stateKey = "")?.root
         name = ContentMapper.map(roomName?.content).toModel<RoomNameContent>()?.name
         if (!name.isNullOrEmpty()) {
-            return name
+            return name.toRoomName()
         }
         val canonicalAlias = CurrentStateEventEntity.getOrNull(realm, roomId, type = EventType.STATE_ROOM_CANONICAL_ALIAS, stateKey = "")?.root
         name = ContentMapper.map(canonicalAlias?.content).toModel<RoomCanonicalAliasContent>()?.canonicalAlias
         if (!name.isNullOrEmpty()) {
-            return name
+            return name.toRoomName()
         }
 
         val roomMembers = RoomMemberHelper(realm, roomId)
@@ -152,7 +154,7 @@ internal class RoomDisplayNameResolver @Inject constructor(
                 }
             }
         }
-        return name ?: roomId
+        return (name ?: roomId).toRoomName()
     }
 
     /** See [org.matrix.android.sdk.api.session.room.sender.SenderInfo.disambiguatedDisplayName] */
@@ -165,4 +167,8 @@ internal class RoomDisplayNameResolver @Inject constructor(
             "${roomMemberSummary.displayName} (${roomMemberSummary.userId})"
         }
     }
+
+    private fun String.toRoomName() = RoomName(this, normalizedName = normalizer.normalize(this))
 }
+
+internal data class RoomName(val name: String, val normalizedName: String)

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/summary/RoomSummaryUpdater.kt

@@ -138,9 +138,7 @@ internal class RoomSummaryUpdater @Inject constructor(
                 // avoid this call if we are sure there are unread events
                 !isEventRead(realm.configuration, userId, roomId, latestPreviewableEvent?.eventId)
 
-        val roomDisplayName = roomDisplayNameResolver.resolve(realm, roomId)
-        roomSummaryEntity.displayName = roomDisplayName
-        roomSummaryEntity.normalizedDisplayName = normalizer.normalize(roomDisplayName)
+        roomSummaryEntity.setDisplayName(roomDisplayNameResolver.resolve(realm, roomId))
         roomSummaryEntity.avatarUrl = roomAvatarResolver.resolve(realm, roomId)
         roomSummaryEntity.name = ContentMapper.map(lastNameEvent?.content).toModel<RoomNameContent>()?.name
         roomSummaryEntity.topic = ContentMapper.map(lastTopicEvent?.content).toModel<RoomTopicContent>()?.topic

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/sync/handler/UserAccountDataSyncHandler.kt

@@ -166,7 +166,7 @@ internal class UserAccountDataSyncHandler @Inject constructor(
                     roomSummaryEntity.directUserId = userId
                     // Also update the avatar and displayname, there is a specific treatment for DMs
                     roomSummaryEntity.avatarUrl = roomAvatarResolver.resolve(realm, roomId)
-                    roomSummaryEntity.displayName = roomDisplayNameResolver.resolve(realm, roomId)
+                    roomSummaryEntity.setDisplayName(roomDisplayNameResolver.resolve(realm, roomId))
                 }
             }
         }
@@ -178,7 +178,7 @@ internal class UserAccountDataSyncHandler @Inject constructor(
                     it.directUserId = null
                     // Also update the avatar and displayname, there was a specific treatment for DMs
                     it.avatarUrl = roomAvatarResolver.resolve(realm, it.roomId)
-                    it.displayName = roomDisplayNameResolver.resolve(realm, it.roomId)
+                    it.setDisplayName(roomDisplayNameResolver.resolve(realm, it.roomId))
                 }
     }