feat: 모든 탭 열어놓기

iBox/Sources/Presenter/BoxList/BoxListView.swift

@@ -19,7 +19,7 @@ class BoxListView: BaseView {
     var folderArr = [
         Folder(name: "기본 폴더", color: .gray, webs: [
             Web(name: "42 Intra", url: "https://profile.intra.42.fr/"),
-            Web(name: "42Where", url: "https://where42.kr/"),
+            Web(name: "42Where", url: "https://www.where42.kr/"),
             Web(name: "42Stat", url: "https://stat.42seoul.kr/"),
             Web(name: "집현전", url: "https://42library.kr/")
         ]),

iBox/Sources/Presenter/BoxList/BoxListViewController.swift

@@ -32,8 +32,8 @@ class BoxListViewController: BaseNavigationBarViewController<BoxListView> {
 
 extension BoxListViewController: BoxListViewDelegate {
     func didSelectWeb(at url: String, withName name: String) {
-        let viewController = WebViewController()
-        viewController.title = name 
+        let viewController = PreloadedWebViewController()
+        viewController.title = name
         viewController.selectedWebsite = url
         navigationController?.pushViewController(viewController, animated: true)
     }

iBox/Sources/Presenter/Web/PreloadedWebView.swift

@@ -0,0 +1,41 @@
+//
+//  PreloadedWebView.swift
+//  iBox
+//
+//  Created by 이지현 on 1/18/24.
+//
+
+import UIKit
+import WebKit
+
+import SnapKit
+
+class PreloadedWebView: BaseView {
+    var selectedWebsite: String? {
+        didSet {
+            getWebView()
+        }
+    }
+
+    private var webView: WKWebView?
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+        backgroundColor = .systemBackground
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    private func getWebView() {
+        guard let selectedWebsite else { return }
+        webView = WebViewPreloader.shared.getWebView(for: URL(string: selectedWebsite)!)
+        guard let webView else { return }
+        addSubview(webView)
+        webView.snp.makeConstraints { make in
+            make.edges.equalToSuperview()
+        }
+    }
+
+}

iBox/Sources/Presenter/Web/PreloadedWebViewController.swift

@@ -0,0 +1,33 @@
+//
+//  PreloadedWebViewController.swift
+//  iBox
+//
+//  Created by 이지현 on 1/18/24.
+//
+
+import UIKit
+
+class PreloadedWebViewController: BaseNavigationBarViewController<PreloadedWebView> {
+    var selectedWebsite: String?
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        view.backgroundColor = .systemBackground
+        navigationItem.largeTitleDisplayMode = .never
+
+        guard let contentView = contentView as? PreloadedWebView else { return }
+        contentView.selectedWebsite = selectedWebsite
+    }
+
+    override func viewWillDisappear(_ animated: Bool) {
+        super.viewWillDisappear(animated)
+
+        guard let selectedWebsite else { return }
+        WebViewPreloader.shared.resetWebView(for: URL(string: selectedWebsite)!)
+    }
+
+    override func setupNavigationBar() {
+        setNavigationBarHidden(true)
+    }
+
+}

iBox/Sources/SceneDelegate.swift

@@ -18,6 +18,17 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         window?.windowScene = windowScene
         window?.rootViewController = MainTabBarController()
         window?.makeKeyAndVisible() // 윈도우를 화면에 보여줌
+
+        // 나중에 userDefaults에 저장해두고 꺼내와서 preload하기
+        let urlsToPreload = [
+            URL(string: "https://profile.intra.42.fr/")!,
+            URL(string: "https://www.where42.kr/")!,
+            URL(string: "https://stat.42seoul.kr/")!,
+            URL(string: "https://42library.kr/")!,
+            URL(string: "https://cabi.42seoul.io/")!,
+            URL(string: "https://24hoursarenotenough.42seoul.kr/")!
+        ]
+        WebViewPreloader.shared.preload(urls: urlsToPreload)
     }
 
     func sceneDidDisconnect(_ scene: UIScene) {

iBox/Sources/Utils/WebViewPreloader.swift

@@ -0,0 +1,33 @@
+//
+//  WebViewPreloader.swift
+//  iBox
+//
+//  Created by 이지현 on 1/18/24.
+//
+
+import Foundation
+import WebKit
+
+class WebViewPreloader {
+    static let shared = WebViewPreloader()
+    private var webViews: [URL: WKWebView] = [:]
+
+    private init() {}
+
+    func preload(urls: [URL]) {
+        for url in urls {
+            let webView = WKWebView()
+            webView.load(URLRequest(url: url))
+            webViews[url] = webView
+        }
+    }
+
+    func getWebView(for url: URL) -> WKWebView? {
+        return webViews[url]
+    }
+
+    func resetWebView(for url: URL) {
+        webViews[url]?.load(URLRequest(url: url))
+    }
+
+}