refactor: 기존에 존재한 변수로 처리하도록 수정

Author: opficdev

DevLog/Infra/Service/SocialLogin/AppleAuthenticationService.swift

@@ -102,10 +102,6 @@ final class AppleAuthenticationService: AuthenticationService {
     }
 
     func deleteAuth(_ uid: String) async throws {
-        guard let currentUser = Auth.auth().currentUser else {
-            throw AuthError.notAuthenticated
-        }
-
         let token = try await refreshAppleAccessToken()
 
         try await revokeAppleAccessToken(token: token)
@@ -114,7 +110,7 @@ final class AppleAuthenticationService: AuthenticationService {
 
         _ = try await deleteFunction.call(["uid": uid])
 
-        try await currentUser.delete()
+        try await user?.delete()
         try await messaging.deleteToken()
         try Auth.auth().signOut()
     }

DevLog/Infra/Service/SocialLogin/GithubAuthenticationService.swift

@@ -81,17 +81,13 @@ final class GithubAuthenticationService: NSObject, AuthenticationService {
     }
 
     func deleteAuth(_ uid: String) async throws {
-        guard let currentUser = Auth.auth().currentUser else {
-            throw AuthError.notAuthenticated
-        }
-
         try await revokeAccessToken()
 
         let deleteFunction = functions.httpsCallable("deleteUserFirestoreData")
 
         _ = try await deleteFunction.call(["uid": uid])
 
-        try await currentUser.delete()
+        try await user?.delete()
         try await messaging.deleteToken()
         try Auth.auth().signOut()
     }

DevLog/Infra/Service/SocialLogin/GoogleAuthenticationService.swift

@@ -78,15 +78,11 @@ final class GoogleAuthenticationService: AuthenticationService {
     }
 
     func deleteAuth(_ uid: String) async throws {
-        guard let currentUser = Auth.auth().currentUser else {
-            throw AuthError.notAuthenticated
-        }
-
         let deleteFunction = functions.httpsCallable("deleteUserFirestoreData")
 
         _ = try await deleteFunction.call(["uid": uid])
 
-        try await currentUser.delete()
+        try await user?.delete()
         GIDSignIn.sharedInstance.signOut()
         try await GIDSignIn.sharedInstance.disconnect()
         try await messaging.deleteToken()