[FEAT]: OAuth 회원 탈퇴 기능 구현

Projects/App/Sources/AppContainer.swift

@@ -123,7 +123,8 @@ final class AppContainer:
       authRepository: authRepository,
       loginRepository: logInRepository,
       imageUploader: imageUploader,
-      myPageRepository: myPageRepository
+      myPageRepository: myPageRepository,
+      oauthRepository: oauthRepository
     )
   }()
 

Projects/Cores/Core/Utils/ServiceConfiguration.swift

@@ -40,6 +40,15 @@ public final class ServiceConfiguration {
   public func setUserName(_ name: String) {
     UserDefaults.standard.set(name, forKey: "userName")
   }
+
+  /// 사용자의 `authProvider`를 리턴합니다.
+  public var authProvider: String {
+    return UserDefaults.standard.string(forKey: "authProvider") ?? "normal"
+  }
+
+  public func setAuthProvider(_ provider: String) {
+    UserDefaults.standard.set(provider, forKey: "authProvider")
+  }
 
   // 개인정보 처리방침
   public var privacyUrl: URL {

Projects/Data/DTO/MyPage/UserProfileResponseDTO.swift

@@ -10,6 +10,7 @@ public struct UserProfileResponseDTO: Decodable {
   public let imageUrl: String?
   public let username: String
   public let email: String
+  public let provider: String?
 }
 
 public extension UserProfileResponseDTO {
@@ -20,7 +21,8 @@ public extension UserProfileResponseDTO {
   "data": {
     "imageUrl": "https://url.kr/5MhHhD",
     "username": "photi",
-    "email": "photi@photi.com"
+    "email": "photi@photi.com",
+    "provider": null
   }
 }
 """

Projects/Data/DTO/OAuth/OAuthWithdrawRequestDTO.swift

@@ -0,0 +1,17 @@
+//
+//  OAuthWithdrawRequestDTO.swift
+//  Data
+//
+//  Created by Claude on 5/10/26.
+//  Copyright © 2026 com.photi. All rights reserved.
+//
+
+public struct OAuthWithdrawRequestDTO: Encodable {
+  public let provider: String
+  public let sub: String
+
+  public init(provider: String, sub: String) {
+    self.provider = provider
+    self.sub = sub
+  }
+}

Projects/Data/DataMapper/MyPageDataMapper.swift

@@ -89,7 +89,8 @@ public extension MyPageDataMapperImpl {
     return .init(
       imageUrl: imageURL(from: dto.imageUrl),
       name: dto.username,
-      email: dto.email
+      email: dto.email,
+      provider: authProvider(from: dto.provider)
     )
   }
 
@@ -108,4 +109,9 @@ private extension MyPageDataMapperImpl {
     guard let strURL else { return nil }
     return URL(string: strURL)
   }
+
+  func authProvider(from provider: String?) -> AuthProvider {
+    guard let provider else { return .normal }
+    return AuthProvider(rawValue: provider) ?? .normal
+  }
 }

Projects/Data/Project.swift

@@ -37,7 +37,8 @@ let project = Project.make(
         .Project.Data.DTO,
         .Project.Data.DataMapper,
         .Project.Data.PhotiNetwork,
-        .Project.Domain.Repository
+        .Project.Domain.Repository,
+        .SPM.KakaoSDKUser
       ]
     ),
     .make(

Projects/Data/Repository/Implementations/OAuthRepositoryImpl/OAuthAPI.swift

@@ -14,6 +14,10 @@ import PhotiNetwork
 public enum OAuthAPI {
   case login(provider: String, idToken: String)
   case setUsername(dto: OAuthUsernameRequestDTO)
+  /// 카카오/구글 탈퇴 - 클라이언트에서 unlink 후 호출
+  case withdrawKakaoGoogle(dto: OAuthWithdrawRequestDTO)
+  /// 애플 탈퇴 - 서버에서 revoke 처리
+  case withdrawApple(accessToken: String)
 }
 
 extension OAuthAPI: TargetType {
@@ -27,6 +31,10 @@ extension OAuthAPI: TargetType {
       return "oauth/\(provider)/login"
     case .setUsername:
       return "oauth/username"
+    case .withdrawKakaoGoogle:
+      return "oauth/withdraw"
+    case .withdrawApple:
+      return "oauth/apple/withdraw"
     }
   }
 
@@ -36,6 +44,8 @@ extension OAuthAPI: TargetType {
       return .get
     case .setUsername:
       return .post
+    case .withdrawKakaoGoogle, .withdrawApple:
+      return .patch
     }
   }
 
@@ -47,6 +57,13 @@ extension OAuthAPI: TargetType {
 
     case let .setUsername(dto):
       return .requestJSONEncodable(dto)
+
+    case let .withdrawKakaoGoogle(dto):
+      return .requestJSONEncodable(dto)
+
+    case let .withdrawApple(accessToken):
+      let parameters = ["access_token": accessToken]
+      return .requestParameters(parameters: parameters, encoding: URLEncoding.queryString)
     }
   }
 
@@ -75,6 +92,19 @@ extension OAuthAPI: TargetType {
         """
       let jsonData = data.data(using: .utf8)
       return .networkResponse(200, jsonData ?? Data(), "", "")
+
+    case .withdrawKakaoGoogle, .withdrawApple:
+      let data = """
+          {
+            "code": "200 OK",
+            "message": "성공",
+            "data": {
+              "successMessage": "string"
+            }
+          }
+        """
+      let jsonData = data.data(using: .utf8)
+      return .networkResponse(200, jsonData ?? Data(), "", "")
     }
   }
 }

Projects/Data/Repository/Implementations/OAuthRepositoryImpl/OAuthRepositoryImpl.swift

@@ -11,6 +11,7 @@ import DTO
 import Entity
 import Repository
 import PhotiNetwork
+import KakaoSDKUser
 
 public struct OAuthRepositoryImpl: OAuthRepository {
   public init() { }
@@ -33,6 +34,71 @@ public extension OAuthRepositoryImpl {
       responseType: SuccessResponseDTO.self
     )
   }
+
+  func withdrawKakao() async throws {
+    let sub = try await fetchKakaoUserId()
+    try await unlinkKakao()
+    try await requestWithdraw(provider: "KAKAO", sub: sub)
+  }
+
+  func withdrawGoogle() async throws {
+    // TODO: 구글 SDK 연동 후 구현
+    // 1. GIDSignIn.sharedInstance.currentUser?.userID로 sub 획득
+    // 2. GIDSignIn.sharedInstance.disconnect()로 연결 해제
+    // 3. requestWithdraw(provider: "GOOGLE", sub: sub) 호출
+    throw APIError.serverError
+  }
+
+  func withdrawApple() async throws {
+    // TODO: 애플 재인증 후 authorization code 획득하여 서버 전달
+    // ASAuthorizationAppleIDProvider를 사용하여 재인증
+    throw APIError.serverError
+  }
+}
+
+// MARK: - Kakao SDK Methods
+private extension OAuthRepositoryImpl {
+  func fetchKakaoUserId() async throws -> String {
+    try await withCheckedThrowingContinuation { continuation in
+      UserApi.shared.me { user, error in
+        if let error = error {
+          continuation.resume(throwing: error)
+          return
+        }
+
+        guard let userId = user?.id else {
+          continuation.resume(throwing: APIError.serverError)
+          return
+        }
+
+        continuation.resume(returning: String(userId))
+      }
+    }
+  }
+
+  func unlinkKakao() async throws {
+    try await withCheckedThrowingContinuation { (continuation: CheckedContinuation<Void, Error>) in
+      UserApi.shared.unlink { error in
+        if let error = error {
+          continuation.resume(throwing: error)
+          return
+        }
+        continuation.resume()
+      }
+    }
+  }
+}
+
+// MARK: - Server API Methods
+private extension OAuthRepositoryImpl {
+  func requestWithdraw(provider: String, sub: String) async throws {
+    let requestDTO = OAuthWithdrawRequestDTO(provider: provider, sub: sub)
+
+    try await requestAuthorizableAPI(
+      api: OAuthAPI.withdrawKakaoGoogle(dto: requestDTO),
+      responseType: SuccessResponseDTO.self
+    )
+  }
 }
 
 // MARK: - Private Methods

Projects/Domain/Entity/UserProfile.swift

@@ -8,18 +8,33 @@
 
 import Foundation
 
+public enum AuthProvider: String {
+  case normal
+  case kakao = "KAKAO"
+  case google = "GOOGLE"
+  case apple = "APPLE"
+}
+
+public enum WithdrawCredential {
+  case password(String)
+  case oauth(provider: AuthProvider)
+}
+
 public struct UserProfile {
   public let imageUrl: URL?
   public let name: String
   public let email: String
-
+  public let provider: AuthProvider
+
   public init(
     imageUrl: URL?,
     name: String,
-    email: String
+    email: String,
+    provider: AuthProvider
   ) {
     self.imageUrl = imageUrl
     self.name = name
     self.email = email
+    self.provider = provider
   }
 }

Projects/Domain/Repository/Interfaces/OAuthRepository.swift

@@ -12,4 +12,13 @@ public protocol OAuthRepository {
 
   /// OAuth 신규 사용자 username 설정
   func setUsername(_ username: String) async throws
+
+  /// 카카오 회원 탈퇴 - SDK unlink + 서버 API 호출
+  func withdrawKakao() async throws
+
+  /// 구글 회원 탈퇴 - SDK disconnect + 서버 API 호출
+  func withdrawGoogle() async throws
+
+  /// 애플 회원 탈퇴 - 서버에서 revoke 처리
+  func withdrawApple() async throws
 }

Projects/Domain/UseCase/Implementations/ProfileEidtUseCaseImpl.swift

@@ -7,6 +7,7 @@
 //
 
 import Foundation
+import Core
 import Entity
 import UseCase
 import Repository
@@ -16,23 +17,28 @@ public final class ProfileEditUseCaseImpl: ProfileEditUseCase {
   private let loginRepository: LogInRepository
   private let imageUploader: PresignedImageUploader
   private let myPageRepository: MyPageRepository
-
+  private let oauthRepository: OAuthRepository
+
   public init(
     authRepository: AuthRepository,
     loginRepository: LogInRepository,
     imageUploader: PresignedImageUploader,
-    myPageRepository: MyPageRepository
+    myPageRepository: MyPageRepository,
+    oauthRepository: OAuthRepository
   ) {
     self.authRepository = authRepository
     self.loginRepository = loginRepository
     self.imageUploader = imageUploader
     self.myPageRepository = myPageRepository
+    self.oauthRepository = oauthRepository
   }
 }
 
 public extension ProfileEditUseCaseImpl {
   func loadUserProfile() async throws -> UserProfile {
-    return try await myPageRepository.fetchUserProfile()
+    let profile = try await myPageRepository.fetchUserProfile()
+    ServiceConfiguration.shared.setAuthProvider(profile.provider.rawValue)
+    return profile
   }
 
   func updateProfileImage(_ imageData: Data, type: String) async throws -> URL? {
@@ -42,8 +48,22 @@ public extension ProfileEditUseCaseImpl {
     return try await myPageRepository.uploadProfileImage(path: url)
   }
 
-  func withdraw(with password: String) async throws {
-    try await myPageRepository.deleteUserAccount(password: password)
+  func withdraw(with credential: WithdrawCredential) async throws {
+    switch credential {
+    case let .password(password):
+      try await myPageRepository.deleteUserAccount(password: password)
+    case let .oauth(provider):
+      switch provider {
+      case .kakao:
+        try await oauthRepository.withdrawKakao()
+      case .google:
+        try await oauthRepository.withdrawGoogle()
+      case .apple:
+        try await oauthRepository.withdrawApple()
+      case .normal:
+        break
+      }
+    }
     authRepository.removeToken()
   }
 

Projects/Domain/UseCase/Interfaces/ProfileEditUseCase.swift

@@ -12,7 +12,7 @@ import Entity
 public protocol ProfileEditUseCase {
   func loadUserProfile() async throws -> UserProfile
   func updateProfileImage(_ imageData: Data, type: String) async throws -> URL?
-  func withdraw(with password: String) async throws
+  func withdraw(with credential: WithdrawCredential) async throws
   func changePassword(from password: String, to newPassword: String) async throws
   func sendTemporaryPassword(to email: String, userName: String) async throws
 }

Projects/Presentation/MyPage/Implementations/Setting/ProfileEdit/Withdraw/WithdrawAuth/WithdrawAuthViewModel.swift

@@ -83,7 +83,7 @@ final class WithdrawAuthViewModel: WithdrawAuthViewModelType {
 private extension WithdrawAuthViewModel {
   @MainActor func withdraw(password: String) async {
     do {
-      try await useCase.withdraw(with: password)
+      try await useCase.withdraw(with: .password(password))
       coordinator?.withdrawalSucceed()
     } catch {
       requestFailed(with: error)

Projects/Presentation/MyPage/Implementations/Setting/ProfileEdit/Withdraw/WithdrawContainer.swift

@@ -22,20 +22,20 @@ final class WithdrawContainer:
   WithdrawContainable,
   WithdrawAuthDependency {
   var profileEditUsecase: ProfileEditUseCase { dependency.profileEditUseCase }
-  
+
   func coordinator(listener: WithdrawListener) -> ViewableCoordinating {
-    let viewModel = WithdrawViewModel()
+    let viewModel = WithdrawViewModel(useCase: dependency.profileEditUseCase)
     let viewControllerable = WithdrawViewController(viewModel: viewModel)
-    
+
     let withdrawAuth = WithdrawAuthContainer(dependency: self)
     let coordinator = WithdrawCoordinator(
       viewControllerable: viewControllerable,
       viewModel: viewModel,
       withdrawAuthContainable: withdrawAuth
     )
-    
+
     coordinator.listener = listener
-    
+
     return coordinator
   }
 }