Feat: 토큰 재발급 함수 reissueToken 구현

- AuthEndpoint에 reissue 케이스 추가
- AuthRepositoryProtocol 및 AuthRepository에 reissueToken 정의 및 구현
- LoginViewModel, LoginViewController에 reissue 테스트 관련 버튼 및 함수 추가

Author: choijungp

Projects/DataSource/Sources/Endpoints/AuthEndpoint.swift

@@ -11,6 +11,7 @@ enum AuthEndpoint {
     case login(socialLoginType: SocialLoginType, nickname: String?, token: String)
     case logout(accessToken: String)
     case withdraw(accessToken: String)
+    case reissue(refreshToken: String)
 }
 
 extension AuthEndpoint: Endpoint {
@@ -23,6 +24,7 @@ extension AuthEndpoint: Endpoint {
         case .login: baseURL + "/login"
         case .logout: baseURL + "/logout"
         case .withdraw: baseURL + "/withdrawal"
+        case .reissue: baseURL + "/token/reissue"
         }
     }
 
@@ -43,6 +45,8 @@ extension AuthEndpoint: Endpoint {
             headers["Authorization"] = "Bearer \(accessToken)"
         case .withdraw(let accessToken):
             headers["Authorization"] = "Bearer \(accessToken)"
+        case .reissue(let refreshToken):
+            headers["Refresh-Token"] = refreshToken
         }
 
         return headers

Projects/DataSource/Sources/Repositories/AuthRepository.swift

@@ -59,6 +59,20 @@ public final class AuthRepository: AuthRepositoryProtocol {
         BitnagilLogger.log(logType: .debug, message: "\(response.message)")
     }
 
+    public func reissueToken() async throws {
+        let refreshToken = try loadToken(tokenType: .refreshToken)
+        let endpoint = AuthEndpoint.reissue(refreshToken: refreshToken)
+        let tokenResponse = try await networkService.request(endpoint: endpoint, type: TokenResponseDTO.self)
+        guard
+            let tokenEntity = tokenResponse.data?.toTokenEntity(),
+            saveToken(tokenType: .accessToken, token: tokenEntity.accessToken),
+            saveToken(tokenType: .refreshToken, token: tokenEntity.refreshToken)
+        else { throw AuthError.tokenSaveFailed }
+
+        BitnagilLogger.log(logType: .debug, message: "AccessToken Saved: \(tokenEntity.accessToken)")
+        BitnagilLogger.log(logType: .debug, message: "RefreshToken Saved: \(tokenEntity.refreshToken)")
+    }
+    
     private func fetchKakaoToken() async throws -> String {
         try await withCheckedThrowingContinuation { continuation in
             let resultHandler: (OAuthToken?, Error?) -> Void = { oauthToken, error in

Projects/Domain/Sources/Protocols/Repository/AuthRepositoryProtocol.swift

@@ -20,4 +20,7 @@ public protocol AuthRepositoryProtocol {
 
     /// 계정 탈퇴를 진행합니다.
     func withdraw() async throws
+
+    /// 토큰 재발급을 진행합니다.
+    func reissueToken() async throws
 }

Projects/Domain/Sources/Protocols/UseCase/LogoutUseCaseProtocol.swift

@@ -5,9 +5,11 @@
 //  Created by 최정인 on 7/4/25.
 //
 
-import Foundation
-
 public protocol LogoutUseCaseProtocol {
     /// 로그아웃을 진행합니다.
     func logout() async throws
+
+    // TODO: 추후 reissue 어디로 가야 하나 ..
+    /// 토큰 재발급을 진행합니다.
+    func reissueToken() async throws
 }

Projects/Domain/Sources/UseCases/Auth/LogoutUseCase.swift

@@ -17,4 +17,8 @@ public final class LogoutUseCase: LogoutUseCaseProtocol {
     public func logout() async throws {
         try await authRepository.logout()
     }
+
+    public func reissueToken() async throws {
+        try await authRepository.reissueToken()
+    }
 }

Projects/Presentation/Sources/Login/LoginViewController.swift

@@ -25,6 +25,7 @@ public final class LoginViewController: BaseViewController<LoginViewModel> {
     private let appleLoginButton = UIButton()
     private let logoutButton = UIButton()
     private let withdrawButton = UIButton()
+    private let reissueButton = UIButton()
     private var cancellables: Set<AnyCancellable>
 
     public override init(viewModel: LoginViewModel) {
@@ -72,6 +73,14 @@ public final class LoginViewController: BaseViewController<LoginViewModel> {
                 self?.viewModel.action(input: .withdraw)
             }, for: .touchUpInside)
         }
+
+        reissueButton.do {
+            $0.setTitle("토큰 재발급", for: .normal)
+            $0.setTitleColor(.blue, for: .normal)
+            $0.addAction(UIAction { [weak self] _ in
+                self?.viewModel.action(input: .reissue)
+            }, for: .touchUpInside)
+        }
     }
 
     override func configureLayout() {
@@ -82,6 +91,7 @@ public final class LoginViewController: BaseViewController<LoginViewModel> {
         view.addSubview(appleLoginButton)
         view.addSubview(logoutButton)
         view.addSubview(withdrawButton)
+        view.addSubview(reissueButton)
 
         kakaoLoginButton.snp.makeConstraints { make in
             make.leading.equalTo(safeArea).offset(Layout.horizontalMargin)
@@ -110,6 +120,13 @@ public final class LoginViewController: BaseViewController<LoginViewModel> {
             make.bottom.equalTo(logoutButton.snp.top).offset(-Layout.loginButtonSpacing)
             make.height.equalTo(Layout.loginButtonHeight)
         }
+
+        reissueButton.snp.makeConstraints { make in
+            make.leading.equalTo(safeArea).offset(Layout.horizontalMargin)
+            make.trailing.equalTo(safeArea).inset(Layout.horizontalMargin)
+            make.bottom.equalTo(withdrawButton.snp.top).offset(-Layout.loginButtonSpacing)
+            make.height.equalTo(Layout.loginButtonHeight)
+        }
     }
 
     override func bind() {
@@ -148,6 +165,17 @@ public final class LoginViewController: BaseViewController<LoginViewModel> {
                 }
             }
             .store(in: &cancellables)
+
+        viewModel.output.reissueResultPublisher
+            .receive(on: DispatchQueue.main)
+            .sink { reissueResult in
+                if reissueResult {
+                    BitnagilLogger.log(logType: .debug, message: "토큰 재발급 성공")
+                } else {
+                    BitnagilLogger.log(logType: .debug, message: "토큰 재발급 실패")
+                }
+            }
+            .store(in: &cancellables)
     }
 
     private func appleLogin() {
@@ -171,7 +199,9 @@ extension LoginViewController: ASAuthorizationControllerDelegate {
         guard
             let credential = authorization.credential as? ASAuthorizationAppleIDCredential,
             let authCodeData = credential.authorizationCode,
-            let authToken = String(data: authCodeData, encoding: .utf8)
+            let identityTokenData = credential.identityToken,
+            let authToken = String(data: authCodeData, encoding: .utf8),
+            let identityToken = String(data: identityTokenData, encoding: .utf8)
         else {
             BitnagilLogger.log(logType: .error, message: "Apple AuthorizationCode 파싱 실패")
             return

Projects/Presentation/Sources/Login/ViewModel/LoginViewModel.swift

@@ -15,19 +15,22 @@ public final class LoginViewModel: ViewModel {
         case appleLogin(nickname: String?, authToken: String)
         case logout
         case withdraw
+        case reissue
     }
 
     public struct Output {
         let loginResultPublisher: AnyPublisher<Bool, Never>
         let logoutResultPublisher: AnyPublisher<Bool, Never>
         let withdrawResultPublisher: AnyPublisher<Bool, Never>
+        let reissueResultPublisher: AnyPublisher<Bool, Never>
     }
 
     private(set) var output: Output
     private let loginResultSubject = PassthroughSubject<Bool, Never>()
     // TODO: 추후 설정 페이지로 옮겨야 합니다.
     private let logoutResultSubject = PassthroughSubject<Bool, Never>()
     private let withdrawResultSubject = PassthroughSubject<Bool, Never>()
+    private let reissueResultSubject = PassthroughSubject<Bool, Never>()
 
     private let loginUseCase: LoginUseCaseProtocol
     // TODO: 추후 설정 페이지로 옮겨야 합니다.
@@ -45,7 +48,8 @@ public final class LoginViewModel: ViewModel {
         self.output = Output(
             loginResultPublisher: loginResultSubject.eraseToAnyPublisher(),
             logoutResultPublisher: logoutResultSubject.eraseToAnyPublisher(),
-            withdrawResultPublisher: withdrawResultSubject.eraseToAnyPublisher()
+            withdrawResultPublisher: withdrawResultSubject.eraseToAnyPublisher(),
+            reissueResultPublisher: reissueResultSubject.eraseToAnyPublisher()
         )
     }
 
@@ -94,6 +98,17 @@ public final class LoginViewModel: ViewModel {
                     withdrawResultSubject.send(false)
                 }
             }
+
+        case .reissue:
+            Task {
+                do {
+                    try await logoutUseCase.reissueToken()
+                    reissueResultSubject.send(true)
+                } catch {
+                    BitnagilLogger.log(logType: .error, message: "\(error.localizedDescription)")
+                    reissueResultSubject.send(false)
+                }
+            }
         }
     }
 }