initial version

PortfolioJournal/Utilities/AppLockService.swift

@@ -0,0 +1,19 @@
+import Foundation
+import LocalAuthentication
+
+enum AppLockService {
+    static func canUseBiometrics() -> Bool {
+        let context = LAContext()
+        var error: NSError?
+        return context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error)
+    }
+
+    static func authenticate(reason: String, completion: @escaping (Bool) -> Void) {
+        let context = LAContext()
+        context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: reason) { success, _ in
+            DispatchQueue.main.async {
+                completion(success)
+            }
+        }
+    }
+}