refactor and cleanup [skip ci]

submodules/Postbox/Sources/PendingPeerNotificationSettingsView.swift

@@ -0,0 +1,41 @@
+
+final class MutablePendingPeerNotificationSettingsView: MutablePostboxView {
+    var entries: [PeerId: PeerNotificationSettings] = [:]
+    
+    init(postbox: Postbox) {
+        for peerId in postbox.pendingPeerNotificationSettingsIndexTable.getAll() {
+            if let value = postbox.peerNotificationSettingsTable.getPending(peerId) {
+                self.entries[peerId] = value
+            } else {
+                assertionFailure()
+            }
+        }
+    }
+    
+    func replay(postbox: Postbox, transaction: PostboxTransaction) -> Bool {
+        var updated = false
+        for peerId in transaction.currentUpdatedPendingPeerNotificationSettings {
+            if let value = postbox.peerNotificationSettingsTable.getPending(peerId) {
+                self.entries[peerId] = value
+                updated = true
+            } else if self.entries[peerId] != nil {
+                self.entries.removeValue(forKey: peerId)
+                updated = true
+            }
+        }
+        return updated
+    }
+    
+    func immutableView() -> PostboxView {
+        return PendingPeerNotificationSettingsView(self)
+    }
+}
+
+public final class PendingPeerNotificationSettingsView: PostboxView {
+    public let entries: [PeerId: PeerNotificationSettings]
+    
+    init(_ view: MutablePendingPeerNotificationSettingsView) {
+        self.entries = view.entries
+    }
+}
+