feat: 방문했던 url 상태 기억

iBox/Sources/BoxList/BoxListView.swift

@@ -11,7 +11,7 @@ import UIKit
 import SnapKit
 
 protocol BoxListViewDelegate: AnyObject {
-    func didSelectWeb(at url: URL, withName name: String)
+    func didSelectWeb(id: UUID, at url: URL, withName name: String)
     func pushViewController(type: EditType)
     func pushViewController(url: URL?)
     func presentEditBookmarkController(at indexPath: IndexPath)
@@ -184,10 +184,8 @@ extension BoxListView: UITableViewDelegate {
     }
 
     func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
-        guard let viewModel else { return }
-        let webUrl = viewModel.boxList[indexPath.section].boxListCellViewModelsWithStatus[indexPath.row].url
-        let webName = viewModel.boxList[indexPath.section].boxListCellViewModelsWithStatus[indexPath.row].name
-        delegate?.didSelectWeb(at: webUrl, withName: webName)
+        guard let cellViewModel = viewModel?.boxList[indexPath.section].boxListCellViewModelsWithStatus[indexPath.row] else { return }
+        delegate?.didSelectWeb(id: cellViewModel.id, at: cellViewModel.url, withName: cellViewModel.name)
     }
 
     func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {

iBox/Sources/BoxList/BoxListViewController.swift

@@ -126,11 +126,18 @@ extension BoxListViewController: BoxListViewDelegate {
     }
 
 
-    func didSelectWeb(at url: URL, withName name: String) {
-        let viewController = WebViewController()
-        viewController.selectedWebsite = url
-        viewController.title = name
-        navigationController?.pushViewController(viewController, animated: true)
+    func didSelectWeb(id: UUID, at url: URL, withName name: String) {
+        if let cachedViewController = WebCacheManager.shared.viewControllerForKey(id) {
+            // 이미 캐시에 존재한다면, 그 인스턴스를 재사용
+            navigationController?.pushViewController(cachedViewController, animated: true)
+        } else {
+            // 캐시에 없는 경우, 새로운 viewController 인스턴스를 생성하고 캐시에 추가합니다.
+            let viewController = WebViewController()
+            viewController.selectedWebsite = url
+            viewController.title = name
+            WebCacheManager.shared.cacheData(forKey: id, viewController: viewController)
+            navigationController?.pushViewController(viewController, animated: true)
+        }
     }
 
     func pushViewController(type: EditType) {

iBox/Sources/Shared/WebCacheManager.swift

@@ -0,0 +1,45 @@
+//
+//  WebCacheManager.swift
+//  iBox
+//
+//  Created by jiyeon on 3/26/24.
+//
+
+import UIKit
+
+class UUIDWrapper: NSObject {
+    let uuid: UUID
+
+    init(uuid: UUID) {
+        self.uuid = uuid
+    }
+
+    override func isEqual(_ object: Any?) -> Bool {
+        guard let other = object as? UUIDWrapper else { return false }
+        return uuid == other.uuid
+    }
+
+    override var hash: Int {
+        return uuid.hashValue
+    }
+}
+
+class WebCacheManager {
+
+    static let shared = WebCacheManager()
+
+    private let cache = NSCache<UUIDWrapper, WebViewController>()
+
+    private init() {}
+
+    func cacheData(forKey uuid: UUID, viewController: WebViewController) {
+        let wrapper = UUIDWrapper(uuid: uuid)
+        cache.setObject(viewController, forKey: wrapper)
+    }
+
+    func viewControllerForKey(_ uuid: UUID) -> WebViewController? {
+        let wrapper = UUIDWrapper(uuid: uuid)
+        return cache.object(forKey: wrapper)
+    }
+
+}