Account recovery/backup feature

Sources/Integration/Client.swift

@@ -39,6 +39,9 @@ public class Client {
     private let groupMessagesSubject = PassthroughSubject<GroupMessage, Never>()
     private let groupRequestsSubject = PassthroughSubject<(Group, [Data], String?), Never>()
 
+    private var isBackupInitialization = false
+    private var isBackupInitializationCompleted = false
+
     // MARK: Lifecycle
 
     init(
@@ -48,6 +51,7 @@ public class Client {
         phone: String?
     ) {
         self.bindings = bindings
+        self.isBackupInitialization = fromBackup
 
         do {
             try registerListenersAndStart()
@@ -120,13 +124,23 @@ public class Client {
             restoreContacts(fromBackup: backup)
             return
         }
+
+        isBackupInitializationCompleted = true
     }
 
     private func registerListenersAndStart() throws {
         bindings.listenNetworkUpdates { [weak networkSubject] in networkSubject?.send($0) }
 
-        bindings.listenRequests { [weak requestsSubject] in
-            requestsSubject?.send($0)
+        bindings.listenRequests { [weak self] in
+            guard let self = self else { return }
+
+            if self.isBackupInitialization {
+                if self.isBackupInitializationCompleted {
+                    self.requestsSubject.send($0)
+                }
+            } else {
+                self.requestsSubject.send($0)
+            }
         } _: { [weak confirmationsSubject] in
             confirmationsSubject?.send($0)
         } _: { [weak resetsSubject] in