Refactor: 자동 로그인 기능 변경

- hasTokenUsecase 제거
- 리프레시 토큰을 기반으로 자동 로그인 시도

Author: wjdrjs00

domain/src/main/java/com/threegap/bitnagil/domain/auth/repository/AuthRepository.kt

@@ -5,14 +5,12 @@ import com.threegap.bitnagil.domain.auth.model.TermsAgreement
 
 interface AuthRepository {
     suspend fun login(socialAccessToken: String, socialType: String): Result<AuthSession>
-
-    suspend fun hasToken(): Boolean
-
-    suspend fun updateAuthToken(accessToken: String, refreshToken: String): Result<Unit>
-
     suspend fun submitAgreement(termsAgreement: TermsAgreement): Result<Unit>
-
     suspend fun logout(): Result<Unit>
-
     suspend fun withdrawal(): Result<Unit>
+
+    suspend fun reissueToken(refreshToken: String): Result<AuthSession>
+    suspend fun getRefreshToken(): String?
+    suspend fun updateAuthToken(accessToken: String, refreshToken: String): Result<Unit>
+    suspend fun clearAuthToken(): Result<Unit>
 }

domain/src/main/java/com/threegap/bitnagil/domain/auth/usecase/AutoLoginUseCase.kt

@@ -0,0 +1,29 @@
+package com.threegap.bitnagil.domain.auth.usecase
+
+import com.threegap.bitnagil.domain.auth.model.UserRole
+import com.threegap.bitnagil.domain.auth.repository.AuthRepository
+import javax.inject.Inject
+
+class AutoLoginUseCase @Inject constructor(
+    private val authRepository: AuthRepository,
+) {
+    suspend operator fun invoke(): UserRole {
+        val refreshToken = authRepository.getRefreshToken()
+        if (refreshToken.isNullOrEmpty()) return UserRole.UNKNOWN
+
+        return authRepository.reissueToken(refreshToken)
+            .onSuccess { authSession ->
+                authRepository.updateAuthToken(
+                    accessToken = authSession.accessToken,
+                    refreshToken = authSession.refreshToken,
+                )
+            }
+            .onFailure {
+                authRepository.clearAuthToken()
+            }
+            .fold(
+                onSuccess = { authSession -> authSession.role },
+                onFailure = { UserRole.UNKNOWN },
+            )
+    }
+}