re-enable the handling for expiration timer update messages until the new design is enabled

SessionMessagingKit/Sending & Receiving/Message Handling/MessageReceiver+ExpirationTimers.swift

@@ -7,47 +7,62 @@ import SessionUtilitiesKit
 extension MessageReceiver {
     internal static func handleExpirationTimerUpdate(_ db: Database, message: ExpirationTimerUpdate) throws {
         // Get the target thread
-//        guard
-//            let targetId: String = MessageReceiver.threadInfo(db, message: message, openGroupId: nil)?.id,
-//            let sender: String = message.sender,
-//            let thread: SessionThread = try? SessionThread.fetchOne(db, id: targetId)
-//        else { return }
-//        
-//        // Update the configuration
-//        //
-//        // Note: Messages which had been sent during the previous configuration will still
-//        // use it's settings (so if you enable, send a message and then disable disappearing
-//        // message then the message you had sent will still disappear)
-//        let config: DisappearingMessagesConfiguration = try thread.disappearingMessagesConfiguration
-//            .fetchOne(db)
-//            .defaulting(to: DisappearingMessagesConfiguration.defaultWith(thread.id))
-//            .with(
-//                // If there is no duration then we should disable the expiration timer
-//                isEnabled: ((message.duration ?? 0) > 0),
-//                durationSeconds: (
-//                    message.duration.map { TimeInterval($0) } ??
-//                    DisappearingMessagesConfiguration.defaultDuration
-//                )
-//            )
-//        
-//        // Add an info message for the user
-//        _ = try Interaction(
-//            serverHash: nil, // Intentionally null so sync messages are seen as duplicates
-//            threadId: thread.id,
-//            authorId: sender,
-//            variant: .infoDisappearingMessagesUpdate,
-//            body: config.messageInfoString(
-//                with: (sender != getUserHexEncodedPublicKey(db) ?
-//                    Profile.displayName(db, id: sender) :
-//                    nil
-//                ),
-//                isPreviousOff: false
-//            ),
-//            timestampMs: Int64(message.sentTimestamp ?? 0)   // Default to `0` if not set
-//        ).inserted(db)
-//        
-//        // Finally save the changes to the DisappearingMessagesConfiguration (If it's a duplicate
-//        // then the interaction unique constraint will prevent the code from getting here)
-//        try config.save(db)
+        guard
+            !DisappearingMessagesConfiguration.isNewConfigurationEnabled,
+            let targetId: String = MessageReceiver.threadInfo(db, message: message, openGroupId: nil)?.id,
+            let sender: String = message.sender,
+            let thread: SessionThread = try? SessionThread.fetchOne(db, id: targetId)
+        else { return }
+        
+        // Update the configuration
+        //
+        // Note: Messages which had been sent during the previous configuration will still
+        // use it's settings (so if you enable, send a message and then disable disappearing
+        // message then the message you had sent will still disappear)
+        
+        let defaultType: DisappearingMessagesConfiguration.DisappearingMessageType? = {
+            switch thread.variant {
+                case .contact:
+                    if thread.id == getUserHexEncodedPublicKey() { fallthrough }
+                    return .disappearAfterRead
+                case .closedGroup:
+                    return .disappearAfterSend
+                case .openGroup:
+                    return nil // Shouldn't happen
+            }
+        }()
+        
+        let config: DisappearingMessagesConfiguration = try thread.disappearingMessagesConfiguration
+            .fetchOne(db)
+            .defaulting(to: DisappearingMessagesConfiguration.defaultWith(thread.id))
+            .with(
+                // If there is no duration then we should disable the expiration timer
+                isEnabled: ((message.duration ?? 0) > 0),
+                durationSeconds: (
+                    message.duration.map { TimeInterval($0) } ??
+                    DisappearingMessagesConfiguration.defaultDuration
+                ),
+                type: defaultType
+            )
+        
+        // Add an info message for the user
+        _ = try Interaction(
+            serverHash: nil, // Intentionally null so sync messages are seen as duplicates
+            threadId: thread.id,
+            authorId: sender,
+            variant: .infoDisappearingMessagesUpdate,
+            body: config.messageInfoString(
+                with: (sender != getUserHexEncodedPublicKey(db) ?
+                    Profile.displayName(db, id: sender) :
+                    nil
+                ),
+                isPreviousOff: false
+            ),
+            timestampMs: Int64(message.sentTimestamp ?? 0)   // Default to `0` if not set
+        ).inserted(db)
+        
+        // Finally save the changes to the DisappearingMessagesConfiguration (If it's a duplicate
+        // then the interaction unique constraint will prevent the code from getting here)
+        try config.save(db)
     }
 }