Refactoring

submodules/TelegramCore/Sources/State/AppConfiguration.swift

@@ -0,0 +1,18 @@
+import Postbox
+import SyncCore
+
+private func currentAppConfiguration(transaction: Transaction) -> AppConfiguration {
+    if let entry = transaction.getPreferencesEntry(key: PreferencesKeys.appConfiguration) as? AppConfiguration {
+        return entry
+    } else {
+        return AppConfiguration.defaultValue
+    }
+}
+
+func updateAppConfiguration(transaction: Transaction, _ f: (AppConfiguration) -> AppConfiguration) {
+    let current = currentAppConfiguration(transaction: transaction)
+    let updated = f(current)
+    if updated != current {
+        transaction.setPreferencesEntry(key: PreferencesKeys.appConfiguration, value: updated)
+    }
+}