refactor and cleanup [skip ci]

submodules/Postbox/Sources/PeerNotificationSettingsBehaviorTimestampView.swift

@@ -0,0 +1,34 @@
+import Foundation
+
+final class MutablePeerNotificationSettingsBehaviorTimestampView: MutablePostboxView {
+    fileprivate var earliestTimestamp: Int32?
+    
+    init(postbox: Postbox) {
+        self.earliestTimestamp = postbox.peerNotificationSettingsBehaviorTable.getEarliest()?.1
+    }
+    
+    func replay(postbox: Postbox, transaction: PostboxTransaction) -> Bool {
+        var updated = false
+        if !transaction.currentUpdatedPeerNotificationBehaviorTimestamps.isEmpty {
+            let earliestTimestamp = postbox.peerNotificationSettingsBehaviorTable.getEarliest()?.1
+            if self.earliestTimestamp != earliestTimestamp {
+                self.earliestTimestamp = earliestTimestamp
+                updated = true
+            }
+        }
+        
+        return updated
+    }
+    
+    func immutableView() -> PostboxView {
+        return PeerNotificationSettingsBehaviorTimestampView(self)
+    }
+}
+
+public final class PeerNotificationSettingsBehaviorTimestampView: PostboxView {
+    public let earliestTimestamp: Int32?
+    
+    init(_ view: MutablePeerNotificationSettingsBehaviorTimestampView) {
+        self.earliestTimestamp = view.earliestTimestamp
+    }
+}