fix: 로그아웃 FCM 토큰 해제 방어 코드 추가

Author: opficdev

Application/DevLogInfra/Sources/Service/AuthServiceImpl.swift

@@ -124,10 +124,11 @@ final class AuthServiceImpl: AuthService {
         logger.info("Clearing current auth session")
 
         do {
-            try await messaging.deleteToken()
+            if messaging.fcmToken != nil {
+                try await messaging.deleteToken()
+            }
         } catch {
             logger.error("Failed to delete FCM token while clearing session", error: error)
-            record(error, code: .deleteMessagingToken)
         }
 
         do {

Application/DevLogInfra/Sources/Service/SocialLogin/AppleAuthenticationServiceImpl.swift

@@ -122,7 +122,13 @@ final class AppleAuthenticationServiceImpl: AuthenticationService {
                 try await infoRef.updateData(["fcmToken": FieldValue.delete()])
             }
 
-            try await messaging.deleteToken()
+            if messaging.fcmToken != nil {
+                do {
+                    try await messaging.deleteToken()
+                } catch {
+                    logger.error("Failed to delete FCM token while signing out with Apple", error: error)
+                }
+            }
 
             try Auth.auth().signOut()
         } catch {

Application/DevLogInfra/Sources/Service/SocialLogin/GithubAuthenticationServiceImpl.swift

@@ -107,7 +107,13 @@ final class GithubAuthenticationServiceImpl: NSObject, AuthenticationService {
                 try await infoRef.updateData(["fcmToken": FieldValue.delete()])
             }
 
-            try await messaging.deleteToken()
+            if messaging.fcmToken != nil {
+                do {
+                    try await messaging.deleteToken()
+                } catch {
+                    logger.error("Failed to delete FCM token while signing out with GitHub", error: error)
+                }
+            }
 
             try Auth.auth().signOut()
         } catch {

Application/DevLogInfra/Sources/Service/SocialLogin/GoogleAuthenticationServiceImpl.swift

@@ -86,7 +86,13 @@ final class GoogleAuthenticationServiceImpl: AuthenticationService {
             GIDSignIn.sharedInstance.signOut()
             try await GIDSignIn.sharedInstance.disconnect()
 
-            try await messaging.deleteToken()
+            if messaging.fcmToken != nil {
+                do {
+                    try await messaging.deleteToken()
+                } catch {
+                    logger.error("Failed to delete FCM token while signing out with Google", error: error)
+                }
+            }
 
             try Auth.auth().signOut()
         } catch {