Rewrite AutoFill extension

passAutoFillExtension/Services/PasswordDecryptor.swift

@@ -0,0 +1,38 @@
+//
+//  PasswordDecryptor.swift
+//  passAutoFillExtension
+//
+//  Created by Sun, Mingshen on 12/31/20.
+//  Copyright © 2020 Bob Sun. All rights reserved.
+//
+
+import UIKit
+import passKit
+
+func decryptPassword(in controller: UIViewController, with passwordEntity: PasswordEntity, using keyID: String? = nil, completion: @escaping ((Password) -> Void)) {
+    DispatchQueue.global(qos: .userInteractive).async {
+        do {
+            let requestPGPKeyPassphrase = Utils.createRequestPGPKeyPassphraseHandler(controller: controller)
+            let decryptedPassword = try PasswordStore.shared.decrypt(passwordEntity: passwordEntity, keyID: keyID, requestPGPKeyPassphrase: requestPGPKeyPassphrase)
+
+            DispatchQueue.main.async {
+                completion(decryptedPassword)
+            }
+        } catch let AppError.pgpPrivateKeyNotFound(keyID: key) {
+            DispatchQueue.main.async {
+                let alert = UIAlertController(title: "CannotShowPassword".localize(), message: AppError.pgpPrivateKeyNotFound(keyID: key).localizedDescription, preferredStyle: .alert)
+                alert.addAction(UIAlertAction.cancelAndPopView(controller: controller))
+                let selectKey = UIAlertAction.selectKey(controller: controller) { action in
+                    decryptPassword(in: controller, with: passwordEntity, using: action.title, completion: completion)
+                }
+                alert.addAction(selectKey)
+
+                controller.present(alert, animated: true)
+            }
+        } catch {
+            DispatchQueue.main.async {
+                Utils.alert(title: "CannotCopyPassword".localize(), message: error.localizedDescription, controller: controller)
+            }
+        }
+    }
+}