refactor and cleanup [skip ci]

submodules/Postbox/Sources/PeerNotificationSettings.swift

@@ -0,0 +1,40 @@
+
+public enum PeerNotificationSettingsBehavior: PostboxCoding {
+    case none
+    case reset(atTimestamp: Int32, toValue: PeerNotificationSettings)
+    
+    public init(decoder: PostboxDecoder) {
+        switch decoder.decodeInt32ForKey("_v", orElse: 0) {
+            case 0:
+                self = .none
+            case 1:
+                if let toValue = decoder.decodeObjectForKey("toValue") as? PeerNotificationSettings {
+                    self = .reset(atTimestamp: decoder.decodeInt32ForKey("atTimestamp", orElse: 0), toValue: toValue)
+                } else {
+                    assertionFailure()
+                    self = .none
+                }
+            default:
+                assertionFailure()
+                self = .none
+        }
+    }
+    
+    public func encode(_ encoder: PostboxEncoder) {
+        switch self {
+            case .none:
+                encoder.encodeInt32(0, forKey: "_v")
+            case let .reset(atTimestamp, toValue):
+                encoder.encodeInt32(1, forKey: "_v")
+                encoder.encodeInt32(atTimestamp, forKey: "atTimestamp")
+                encoder.encodeObject(toValue, forKey: "toValue")
+        }
+    }
+}
+
+public protocol PeerNotificationSettings: PostboxCoding {
+    var isRemovedFromTotalUnreadCount: Bool { get }
+    var behavior: PeerNotificationSettingsBehavior { get }
+    
+    func isEqual(to: PeerNotificationSettings) -> Bool
+}