Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/TelegramCore/Sources/ApiUtils/RemoteStorageConfiguration.swift

@@ -0,0 +1,27 @@
+import Foundation
+import Postbox
+import SwiftSignalKit
+
+
+func currentWebDocumentsHostDatacenterId(postbox: Postbox, isTestingEnvironment: Bool) -> Signal<Int32, NoError> {
+    return postbox.transaction { transaction -> Int32 in
+        if let entry = transaction.getPreferencesEntry(key: PreferencesKeys.remoteStorageConfiguration)?.get(RemoteStorageConfiguration.self) {
+            return entry.webDocumentsHostDatacenterId
+        } else {
+            if isTestingEnvironment {
+                return 2
+            } else {
+                return 4
+            }
+        }
+    }
+}
+
+func updateRemoteStorageConfiguration(transaction: Transaction, configuration: RemoteStorageConfiguration) {
+    let current = transaction.getPreferencesEntry(key: PreferencesKeys.remoteStorageConfiguration)?.get(RemoteStorageConfiguration.self)
+    if let current = current, current == configuration {
+        return
+    }
+    
+    transaction.setPreferencesEntry(key: PreferencesKeys.remoteStorageConfiguration, value: PreferencesEntry(configuration))
+}