작업계획서대로 진행

server/api/auth/synology/callback.get.ts

@@ -26,16 +26,20 @@ export default defineEventHandler(async (event) => {
   
   try {
     // 1. 코드로 액세스 토큰 교환
+    const tokenParams = new URLSearchParams({
+      grant_type: 'authorization_code',
+      code: code,
+      client_id: config.synologyClientId,
+      redirect_uri: config.synologyRedirectUri
+    })
+    if (config.synologyClientSecret) {
+      tokenParams.set('client_secret', config.synologyClientSecret)
+    }
+    
     const tokenResponse = await $fetch<any>(`${config.synologyServerUrl}/webman/sso/SSOAccessToken.cgi`, {
       method: 'POST',
       headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
-      body: new URLSearchParams({
-        grant_type: 'authorization_code',
-        code: code,
-        client_id: config.synologyClientId,
-        client_secret: config.synologyClientSecret,
-        redirect_uri: config.synologyRedirectUri
-      }).toString()
+      body: tokenParams.toString()
     })
     
     if (!tokenResponse.access_token) {