Status and reaction improvements

submodules/Postbox/Sources/PeerTimeoutAttributesView.swift

@@ -0,0 +1,45 @@
+import Foundation
+
+final class MutablePeerTimeoutAttributesView: MutablePostboxView {
+    fileprivate var minValue: (peerId: PeerId, timestamp: UInt32)?
+    
+    init(postbox: PostboxImpl) {
+        self.minValue = postbox.peerTimeoutPropertiesTable.min()
+    }
+    
+    func replay(postbox: PostboxImpl, transaction: PostboxTransaction) -> Bool {
+        var updated = false
+        
+        if transaction.updatedPeerTimeoutAttributes {
+            let minValue = postbox.peerTimeoutPropertiesTable.min()
+            if self.minValue?.0 != minValue?.0 || self.minValue?.1 != minValue?.1 {
+                updated = true
+                self.minValue = minValue
+            }
+        }
+        
+        return updated
+    }
+
+    func refreshDueToExternalTransaction(postbox: PostboxImpl) -> Bool {
+        let minValue = postbox.peerTimeoutPropertiesTable.min()
+        if self.minValue?.0 != minValue?.0 || self.minValue?.1 != minValue?.1 {
+            self.minValue = minValue
+            return true
+        } else {
+            return false
+        }
+    }
+    
+    func immutableView() -> PostboxView {
+        return PeerTimeoutAttributesView(self)
+    }
+}
+
+public final class PeerTimeoutAttributesView: PostboxView {
+    public let minValue: (peerId: PeerId, timestamp: UInt32)?
+    
+    init(_ view: MutablePeerTimeoutAttributesView) {
+        self.minValue = view.minValue
+    }
+}