MESSENGER-2762 Initial Merge

bwi/TimeLine/DefaultTimelineFilterService.swift

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2021 BWI GmbH
+ *
+ * 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.
+ */
+
+import Foundation
+
+@objcMembers class DefaultTimelineFilterService : NSObject {
+    func isDisplayNameChangeEvent(_ event: MXEvent) -> Bool {
+        guard let content = event.content, let prevContent = event.prevContent else {
+            return false
+        }
+        
+        if let displayName = content["displayname"] as? String, let prevDisplayName = prevContent["displayname"] as? String {
+            return displayName != prevDisplayName
+        }
+        
+        return false
+    }
+    
+    func isAvatarChangeEvent(_ event: MXEvent) -> Bool {
+        guard let content = event.content, let prevContent = event.prevContent else {
+            return false
+        }
+        
+        if let avatarUrl = content["avatar_url"] as? String, let prevAvatarUrl = prevContent["avatar_url"] as? String {
+            return avatarUrl != prevAvatarUrl
+        }
+        
+        return false
+    }
+    
+    func isRoomExitEvent(_ event: MXEvent) -> Bool {
+        guard let content = event.content else {
+            return false
+        }
+        
+        if let membership = content["membership"] as? String {
+            return membership == "leave"
+        }
+        
+        return false
+    }
+    
+    func isRoomEntryEvent(_ event: MXEvent) -> Bool {
+        guard let content = event.content else {
+            return false
+        }
+        
+        if let membership = content["membership"] as? String {
+            if membership == "join" {
+                return content["avatar_url"] == nil
+            }
+        }
+        
+        return false
+    }
+    
+    func isRoomInviteEvent(_ event: MXEvent) -> Bool {
+        guard let content = event.content else {
+            return false
+        }
+        
+        if let membership = content["membership"] as? String {
+            return membership == "invite"
+        }
+        
+        return false
+    }
+}
+
+extension DefaultTimelineFilterService : TimeLineFilterService {
+    func shouldFilter(_ cellData: MXKRoomBubbleCellData?) -> Bool {
+        
+        guard let cellData = cellData else {
+            return false
+        }
+        
+        var filtered = false
+
+        for event in cellData.events {
+            
+            if !RiotSettings.shared.settingUserAvatarChangeEnabled || RiotSettings.shared.settingSimpleTimelineEnabled {
+                filtered = isAvatarChangeEvent(event) || isDisplayNameChangeEvent(event)
+                if filtered {
+                    break
+                }
+            }
+            if !RiotSettings.shared.settingEnterRoomEnabled || RiotSettings.shared.settingSimpleTimelineEnabled {
+                filtered = isRoomEntryEvent(event) || isRoomExitEvent(event) || isRoomInviteEvent(event)
+                if filtered {
+                    break
+                }
+            }
+        }
+
+        return filtered
+    }
+}