fix: 점검페이지 present 로직 개선

이미 present 중인 viewcontroller가 있는 경우, dismiss 후 present 합니다.

Author: hgjwilly-koreatech

Koin/Apps/SceneDelegate.swift

@@ -10,13 +10,17 @@ import UIKit
 class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 
     var window: UIWindow?
-    var urlParameters: [String: String]?
+    private var isPresentingPresentErrorViewController = false
 
     override init() {
         super.init()
         NotificationCenter.default.addObserver(self, selector: #selector(presentErrorViewController), name: NSNotification.Name("ServerError"), object: nil)
     }
 
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+    
     func scene(_ scene: UIScene,
                willConnectTo session: UISceneSession,
                options connectionOptions: UIScene.ConnectionOptions) {
@@ -122,16 +126,29 @@ extension SceneDelegate {
 
     @objc private func presentErrorViewController() {
 
+        guard isPresentingPresentErrorViewController == false else {
+            return
+        }
+        isPresentingPresentErrorViewController = true
+        
         if let navigationController = window?.rootViewController as? UINavigationController {
 
             let homeViewController = makeHomeViewController()
-            let completion: ()->Void = {
+            let completion: ()->Void = { [weak self] in
+                self?.isPresentingPresentErrorViewController = false
                 navigationController.setViewControllers([homeViewController], animated: false)
             }
             let errorViewController = ErrorViewController(completion: completion).then {
                 $0.modalPresentationStyle = .fullScreen
             }
-            navigationController.present(errorViewController, animated: true)
+            
+            if let _ = navigationController.presentedViewController {
+                navigationController.dismiss(animated: true) {
+                    navigationController.present(errorViewController, animated: true)
+                }
+            } else {
+                navigationController.present(errorViewController, animated: true)
+            }
         }
     }
 }