修正

backend/app/modules/opening_balances/lock_router.py

@@ -1,4 +1,4 @@
-from fastapi import APIRouter, HTTPException
+from fastapi import APIRouter, HTTPException, Query
 from pydantic import BaseModel
 from app.core.database import get_connection
 
@@ -10,6 +10,25 @@ router = APIRouter(
 class LockRequest(BaseModel):
     fiscal_year: int
 
+@router.get("/lock-status", summary="期首残高確定状態確認")
+def get_lock_status(fiscal_year: int = Query(..., description="会計年度")):
+    try:
+        with get_connection() as conn, conn.cursor() as cur:
+            cur.execute("""
+                SELECT is_locked
+                FROM fiscal_year_locks
+                WHERE fiscal_year = %s
+            """, (fiscal_year,))
+            row = cur.fetchone()
+            
+            if row:
+                return {"is_locked": row[0]}
+            else:
+                return {"is_locked": False}
+    except Exception:
+        # テーブルが存在しない場合は未ロック扱い
+        return {"is_locked": False}
+
 @router.post("/lock", summary="期首残高年度確定")
 def lock_fiscal_year(req: LockRequest):