LINE 로그인 지원 추가

LINE 로그인 요청과 토큰 처리 흐름을 추가함

SodaLive/Sources/User/Login/LoginViewModel.swift

@@ -15,12 +15,14 @@ import UIKit
 import GoogleSignIn
 import KakaoSDKUser
 import KakaoSDKAuth
+import LineSDK
 
 final class LoginViewModel: NSObject, ObservableObject {
     private let appViewModel = AppViewModel()
     private let repository = UserRepository()
     private var subscription = Set<AnyCancellable>()
     private var currentNonce: String?
+    private var currentLineNonce: String?
     
     @Published var email = ""
     @Published var password = ""
@@ -127,6 +129,49 @@ final class LoginViewModel: NSObject, ObservableObject {
             KakaoSDKUser.UserApi.shared.loginWithKakaoAccount(completion: loginHandler)
         }
     }
+
+    func loginWithLine() {
+        guard let presentingViewController = presentingViewController() else {
+            self.errorMessage = I18n.Login.Line.openFailed
+            self.isShowPopup = true
+            return
+        }
+
+        let nonce = randomNonceString()
+        currentLineNonce = nonce
+
+        var parameters = LoginManager.Parameters()
+        parameters.IDTokenNonce = nonce
+
+        DispatchQueue.main.async {
+            LoginManager.shared.login(permissions: [.profile, .openID], in: presentingViewController, parameters: parameters) { result in
+                switch result {
+                case .success(let loginResult):
+                    guard let identityToken = loginResult.accessToken.IDTokenRaw, !identityToken.isEmpty else {
+                        self.currentLineNonce = nil
+                        self.errorMessage = I18n.Login.Line.tokenMissing
+                        self.isShowPopup = true
+                        return
+                    }
+                    
+                    guard let lineNonce = self.currentLineNonce else {
+                        self.errorMessage = I18n.Common.commonError
+                        self.isShowPopup = true
+                        return
+                    }
+                    
+                    self.currentLineNonce = nil
+                    self.loginWithLine(identityToken: identityToken, nonce: lineNonce)
+                    
+                case .failure(let error):
+                    self.currentLineNonce = nil
+                    ERROR_LOG(error.localizedDescription)
+                    self.errorMessage = I18n.Login.Line.signInFailed
+                    self.isShowPopup = true
+                }
+            }
+        }
+    }
     
     private func loginWithApple(identityToken: String, nonce: String) {
         let pushToken = UserDefaults.string(forKey: .pushToken)
@@ -209,6 +254,33 @@ final class LoginViewModel: NSObject, ObservableObject {
             .store(in: &subscription)
     }
 
+    private func loginWithLine(identityToken: String, nonce: String) {
+        let pushToken = UserDefaults.string(forKey: .pushToken)
+        let marketingPid = UserDefaults.string(forKey: .marketingPid)
+        let request = SocialLoginRequest(
+            container: "ios",
+            pushToken: pushToken.isEmpty ? nil : pushToken,
+            marketingPid: marketingPid.isEmpty ? nil : marketingPid,
+            identityToken: identityToken,
+            nonce: nonce
+        )
+
+        isLoading = true
+        repository.loginLine(request: request)
+            .sink { result in
+                switch result {
+                case .finished:
+                    DEBUG_LOG("finish")
+                case .failure(let error):
+                    self.isLoading = false
+                    ERROR_LOG(error.localizedDescription)
+                }
+            } receiveValue: { response in
+                self.handleLoginResponse(response)
+            }
+            .store(in: &subscription)
+    }
+
     private func presentingViewController() -> UIViewController? {
         return UIApplication.shared.connectedScenes
             .compactMap { $0 as? UIWindowScene }