feat : (#31) oauthReissueService

Author: qkrwndnjs1075

src/main/kotlin/entry/dsm/gitauth/equusgithubauth/domain/auth/service/OauthReissueService.kt

@@ -0,0 +1,20 @@
+package entry.dsm.gitauth.equusgithubauth.domain.auth.service
+
+import entry.dsm.gitauth.equusgithubauth.domain.user.entity.repository.RefreshTokenRepository
+import entry.dsm.gitauth.equusgithubauth.domain.user.presentation.dto.response.TokenResponse
+import entry.dsm.gitauth.equusgithubauth.global.security.auth.exception.RefreshTokenNotFoundException
+import entry.dsm.gitauth.equusgithubauth.global.security.jwt.JwtTokenProvider
+import org.springframework.stereotype.Service
+
+@Service
+class OauthReissueService(
+    private val refreshTokenRepository: RefreshTokenRepository,
+    private val jwtTokenProvider: JwtTokenProvider
+) {
+    fun reissue(refreshToken: String): TokenResponse {
+        val storedToken = refreshTokenRepository.findByRefreshToken(refreshToken)
+            ?: throw RefreshTokenNotFoundException()
+
+        return jwtTokenProvider.oauthReissueToken(storedToken)
+    }
+}