Messenger example - auth requests handling

Examples/xx-messenger/Sources/AppCore/AuthCallbackHandler/AuthCallbackHandlerRequest.swift

 import Foundation
 import XCTestDynamicOverlay
 import XXClient
+import XXMessengerClient
 import XXModels
 
 public struct AuthCallbackHandlerRequest {
@@ -14,6 +15,7 @@ public struct AuthCallbackHandlerRequest {
 extension AuthCallbackHandlerRequest {
   public static func live(
     db: DBManagerGetDB,
+    messenger: Messenger,
     now: @escaping () -> Date
   ) -> AuthCallbackHandlerRequest {
     AuthCallbackHandlerRequest { xxContact in
@@ -29,6 +31,16 @@ extension AuthCallbackHandlerRequest {
       dbContact.authStatus = .verificationInProgress
       dbContact.createdAt = now()
       dbContact = try db().saveContact(dbContact)
+
+      do {
+        let verified = try messenger.verifyContact(xxContact)
+        dbContact.authStatus = verified ? .verified : .verificationFailed
+        dbContact = try db().saveContact(dbContact)
+      } catch {
+        dbContact.authStatus = .verificationFailed
+        dbContact = try db().saveContact(dbContact)
+        throw error
+      }
     }
   }
 }