[finn/week9]

Sources/App/MainTabView.swift

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+//
+//  TabView.swift
+//  megabox
+//
+//  Created by 문인성 on 10/8/25.
+//
+
+import SwiftUI
+
+struct MainTabView: View {
+    var body: some View {
+        TabView {
+            Tab("홈" , systemImage: "house.fill") {
+                Home()
+            }
+
+            Tab("바로 예매" , systemImage: "play.laptopcomputer") {
+                LoginView(viewModel: LoginViewModel())
+            }
+
+            Tab("모바일 오더" , systemImage: "popcorn") {
+                MobileOrderView()
+            }
+
+            Tab("마이 페이지" , systemImage: "person") {
+                UserInformation()
+
+            }
+        }
+    }
+}
+
+#Preview {
+    MainTabView()
+}

Sources/App/MegaboxApp.swift

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+import SwiftUI
+
+@main
+struct YourApp: App {
+
+    @StateObject private var viewModel = LoginViewModel()
+
+    @State private var isSplashFinished: Bool = false
+
+    var body: some Scene {
+        WindowGroup {
+
+            if !isSplashFinished {
+                SplashView(isSplashFinished: $isSplashFinished)
+
+            } else {
+
+                if viewModel.isLoggedIn {
+                    MainTabView()
+                                .environmentObject(viewModel)
+                } else {
+                    // (checkAutoLogin()이 실패했다면)
+                    LoginView(viewModel: viewModel)
+                }
+            }
+        }
+    }
+}

Sources/Authentication/LoginModel.swift

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+//
+//  LoginModel.swift
+//  megabox
+//
+//  Created by 문인성 on 9/25/25.
+//
+
+import Foundation
+
+struct LoginModel {
+    var id: String = ""
+    var pwd: String = ""
+}
+

Sources/Authentication/LoginView.swift

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+// LoginView.swift
+
+import SwiftUI
+
+struct LoginView: View {
+
+    @StateObject private var viewModel: LoginViewModel
+
+    init(viewModel: LoginViewModel) {
+            _viewModel = StateObject(wrappedValue: viewModel)
+        }
+
+    @State private var showAlert: Bool = false
+
+    var body: some View {
+        VStack {
+            HStack {
+                Text("로그인")
+                    .font(.semiBold24)
+                    .padding(.top, 44)
+            }
+
+            Spacer()
+
+            VStack {
+                TextField("아이디", text: $viewModel.loginInfo.id)
+                    .padding(.horizontal, 16)
+                Divider()
+                    .padding(.horizontal, 16)
+
+                SecureField("비밀번호", text: $viewModel.loginInfo.pwd)
+                    .padding(.horizontal, 16)
+                Divider()
+                    .padding(.horizontal, 16)
+                    .padding(.bottom, 74.98)
+
+
+                Button(action: {
+
+                    viewModel.handleLogin()
+
+                    if !viewModel.isLoggedIn {
+                        showAlert = true
+                    }
+
+                }) {
+                    Text("로그인")
+                        .font(.headline)
+                        .fontWeight(.bold)
+                        .foregroundStyle(.white)
+                        .frame(maxWidth: .infinity)
+                        .padding(.vertical, 9)
+                        .background(Color.purple) // Color("purple03")
+                        .cornerRadius(10)
+                }
+                .padding(.horizontal, 16.5)
+                .padding(.bottom, 17)
+
+                Text("회원가입")
+                    .font(.medium13)
+                    .foregroundStyle(Color.gray) // Color("gray04")
+            }
+
+        }
+
+        .alert("로그인 실패", isPresented: $showAlert) {
+            Button("확인", role: .cancel) {}
+        } message: {
+            Text("아이디 또는 비밀번호를 확인해주세요.")
+        }
+
+        HStack {
+                    Image("naverLoginBtn")
+                    Spacer()
+                    Image("kakaoLoginBtn")
+                    Spacer()
+                    Image("appleLoginBtn")
+                }
+                    .frame(maxWidth: .infinity)
+                    .padding(.top, 35)
+                    .padding(.horizontal, 87)
+                    .padding(.bottom, 39)
+
+        HStack {
+            Image("umc")
+                .resizable()
+                .scaledToFit()
+                .frame(maxWidth: .infinity)
+                .padding(.horizontal, 16)
+        }
+
+        Spacer()
+
+    }
+}
+
+#Preview {
+    LoginView(viewModel: LoginViewModel())
+}

Sources/Authentication/LoginViewModel.swift

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+// LoginViewModel.swift
+// (이 코드로 파일 전체를 덮어쓰세요)
+
+import Foundation
+
+class LoginViewModel: ObservableObject {
+
+    @Published var loginInfo = LoginModel()
+    @Published var isLoggedIn: Bool = false
+    @Published var userName: String = "" // 마이페이지 표시용
+
+
+    private let idAccount = "userID"
+    private let pwdAccount = "userPassword"
+
+    init() {
+        checkAutoLogin()
+    }
+
+    func checkAutoLogin() {
+        guard let savedId = KeychainHelper.read(account: idAccount),
+              let savedPwd = KeychainHelper.read(account: pwdAccount) else {
+            print("No credentials found in Keychain.")
+            return
+        }
+
+        print("Auto login successful.")
+        self.userName = savedId // 마이페이지용 이름 설정 (체크리스트 3번)
+        self.isLoggedIn = true // 로그인 상태를 true로 변경
+    }
+
+    func handleLogin() {
+        let correctId = "swift"
+        let correctPwd = "1234"
+
+        if loginInfo.id == correctId && loginInfo.pwd == correctPwd {
+            let idSaved = KeychainHelper.save(string: loginInfo.id, account: idAccount)
+            let pwdSaved = KeychainHelper.save(string: loginInfo.pwd, account: pwdAccount)
+
+            if idSaved && pwdSaved {
+                print("Credentials saved to Keychain.")
+                self.userName = loginInfo.id
+                self.isLoggedIn = true
+            } else {
+                print("Failed to save credentials to Keychain.")
+            }
+
+        } else {
+            print("Login failed: Incorrect ID or PWD.")
+        }
+    }
+
+    func handleLogout() {
+        let idDeleted = KeychainHelper.delete(account: idAccount)
+        let pwdDeleted = KeychainHelper.delete(account: pwdAccount)
+
+        if idDeleted && pwdDeleted {
+            print("Credentials deleted from Keychain.")
+        } else {
+            print("Could not delete credentials from Keychain.")
+        }
+
+        self.isLoggedIn = false
+        self.userName = "" // 저장된 사용자 이름도 지웁니다.
+    }
+}

Sources/Authentication/SplashView.swift

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+//
+//  SplashView.swift
+//  megabox
+//
+//  Created by 문인성 on 9/24/25.
+//
+
+import SwiftUI
+
+struct SplashView: View {
+
+    @Binding var isSplashFinished: Bool
+
+    var body: some View {
+
+        ZStack {
+            Color(.white)
+            Image("megaboxLogo")
+                .resizable()
+                .scaledToFit()
+                .frame(maxWidth: .infinity)
+                .padding(.horizontal, 95)
+        }
+        .onAppear {
+            DispatchQueue.main.asyncAfter(deadline: .now() + 2.0) {
+                withAnimation {
+                    self.isSplashFinished = true
+                }
+            }
+        }
+    }
+}
+
+struct PreviewWrapper2: View {
+    @State private var test = ""
+
+    var body: some View {
+        TextEditor(text: $test)
+            .frame(height: 100)
+            .border(Color.gray, width: 1)
+    }
+}
+
+struct PreviewWrapper_previews2: PreviewProvider {
+    static let devices = [ "iPhone 16 Pro Max",
+                           "iPhone 11"]
+
+    static var previews: some View {
+        ForEach(devices, id: \.self) { device in
+
+            SplashView(isSplashFinished: .constant(false))
+                .previewDevice(PreviewDevice(rawValue: device))
+                .previewDisplayName(device)
+        }
+    }
+}