use isDM from the SDK to determine if a spaceRoom, a joinedRoom or a notificationItem are from a dm room.

ElementX/Sources/Services/Room/RoomInfoProxy.swift

@@ -49,6 +49,10 @@ struct RoomInfoProxy: RoomInfoProxyProtocol {
     var isDirect: Bool {
         roomInfo.isDirect
     }
+    
+    var isDM: Bool {
+        roomInfo.isDm
+    }
 
     var isSpace: Bool {
         roomInfo.isSpace

ElementX/Sources/Services/Room/RoomInfoProxyProtocol.swift

@@ -36,6 +36,7 @@ protocol RoomInfoProxyProtocol: BaseRoomInfoProxyProtocol {
 
     var isEncrypted: Bool { get }
     var isDirect: Bool { get }
+    var isDM: Bool { get }
     var isSpace: Bool { get }
     var isFavourite: Bool { get }
     

ElementX/Sources/Services/Room/RoomMember/RoomMemberProxy.swift

@@ -51,4 +51,8 @@ final class RoomMemberProxy: RoomMemberProxyProtocol {
     var powerLevel: RoomPowerLevel {
         .init(rustPowerLevel: member.powerLevel)
     }
+    
+    var isServiceMember: Bool {
+        member.isServiceMember
+    }
 }

ElementX/Sources/Services/Room/RoomMember/RoomMemberProxyProtocol.swift

@@ -25,6 +25,8 @@ protocol RoomMemberProxyProtocol: AnyObject {
     var isIgnored: Bool { get }
     
     var powerLevel: RoomPowerLevel { get }
+    
+    var isServiceMember: Bool { get }
 }
 
 extension RoomMemberProxyProtocol {

ElementX/Sources/Services/Room/RoomProxyProtocol.swift

@@ -222,10 +222,6 @@ extension JoinedRoomProxyProtocol {
                            isDirect: infoPublisher.value.isDirect,
                            historySharingState: historySharingState)
     }
-    
-    var isDirectOneToOneRoom: Bool {
-        infoPublisher.value.isDirect && infoPublisher.value.activeMembersCount <= 2
-    }
 
     func members() async -> [RoomMemberProxyProtocol]? {
         await updateMembers()

ElementX/Sources/Services/Spaces/SpaceServiceRoom.swift

@@ -24,6 +24,7 @@ struct SpaceServiceRoom {
     
     var isSpace: Bool
     var isDirect: Bool?
+    var isDM: Bool?
     var childrenCount: Int
     
     var joinedMembersCount: Int
@@ -70,6 +71,7 @@ extension SpaceServiceRoom {
         
         isSpace = spaceRoom.roomType == .space
         isDirect = spaceRoom.isDirect
+        isDM = spaceRoom.isDm
         childrenCount = Int(spaceRoom.childrenCount)
         
         joinedMembersCount = Int(spaceRoom.numJoinedMembers)
@@ -92,6 +94,7 @@ extension SpaceServiceRoom {
                      avatarURL: URL? = nil,
                      isSpace: Bool,
                      isDirect: Bool? = nil,
+                     isDM: Bool? = nil,
                      childrenCount: Int = 0,
                      joinedMembersCount: Int = 0,
                      heroes: [UserProfileProxy] = [],
@@ -108,6 +111,7 @@ extension SpaceServiceRoom {
                          avatarURL: avatarURL,
                          isSpace: isSpace,
                          isDirect: isDirect,
+                         isDM: isDM,
                          childrenCount: childrenCount,
                          joinedMembersCount: joinedMembersCount,
                          heroes: heroes,

ElementX/Sources/Services/Timeline/TimelineController/TimelineController.swift

@@ -419,7 +419,7 @@ class TimelineController: TimelineControllerProtocol {
         let isNewTimeline = isSwitchingTimelines
         isSwitchingTimelines = false
         
-        let isDM = roomProxy.isDirectOneToOneRoom
+        let isDM = roomProxy.infoPublisher.value.isDM
         let displayName = roomProxy.infoPublisher.value.displayName
         let hasPredecessor = roomProxy.predecessorRoom != nil