修复 SSE 成员校验未生效的问题

src/app/api/room/[id]/events/route.ts

@@ -12,15 +12,25 @@ export async function GET(
 
   const url = new URL(req.url);
   const userId = url.searchParams.get("userId");
+  if (!userId) {
+    return new Response(JSON.stringify({ error: "missing_user_id" }), {
+      status: 401,
+      headers: { "Content-Type": "application/json" },
+    });
+  }
 
-  if (userId) {
-    const data = await getRoomData(id);
-    if (data && !data.users.includes(userId)) {
-      return new Response(JSON.stringify({ error: "not_a_member" }), {
-        status: 403,
-        headers: { "Content-Type": "application/json" },
-      });
-    }
+  const data = await getRoomData(id);
+  if (!data) {
+    return new Response(JSON.stringify({ error: "room_not_found" }), {
+      status: 404,
+      headers: { "Content-Type": "application/json" },
+    });
+  }
+  if (!data.users.includes(userId)) {
+    return new Response(JSON.stringify({ error: "not_a_member" }), {
+      status: 403,
+      headers: { "Content-Type": "application/json" },
+    });
   }
 
   const encoder = new TextEncoder();